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Starting from raw materials, explore the road of energy-saving and efficient technology in ceramic industry

Author:Foshan Yangsen Chemical Co., Ltd. Click: Time:2020-09-10 00:00:00

On the afternoon of November 26, the 2014 new technology forum for raw material preparation of ceramic industry, which had been prepared for more than a month, was held in the conference room on the fifth floor of Foshan China Ceramic City, attracting nearly 200 representatives from ceramic enterprises and industry-related chemical raw materials, machinery and equipment enterprises. The forum was sponsored by Foshan Science and Technology Association, organized by Foshan Ceramic Society, CO organized by Foshan ceramics magazine, the mechanical equipment professional committee of ceramic branch of China Silicate Society and China Ceramic City Group, and co chaired by Dr. Yinhong, Deputy Secretary General of China Building and Sanitary Ceramics Association, Huang Bin, Secretary general of Foshan Ceramic Society and editor in chief of Foshan ceramics magazine. Also present at the event were chenfengdeng, director of the society Department of Foshan Association for science and Technology (hereinafter referred to as Foshan Association for science and Technology), Fengbin, vice chairman of Foshan Association for science and technology and chairman of Foshan Ceramic Society, zhangbaiqing, director of the mechanical equipment professional committee of the ceramic branch of China Silicate Society, qiaofudong, vice chairman of Foshan Ceramic Society, chairman of Foshan ceramics magazine and innovative ceramics, and other government leaders and well-known experts and scholars in the industry.

This forum is different from the previous form of organizing guests to take the stage for interactive communication after the end of the keynote speech. It has been slightly adjusted. After each guest's speech, Dr. Yinhong presided over the forum and asked the participants to ask questions to the speakers. The whole forum has become more compact and closely gathered the spirit and vision of the participants.

In order to meet the needs of readers and participants, this newspaper, as the supporting and cooperative media of this activity, specially arranges and replays the on-site wonderful speeches. At the same time, this newspaper will continue to report the contents of some thematic technical speeches in the follow-up. Please pay attention.

In recent years, the state has issued relevant policies to accelerate the development of energy conservation and environmental protection industries, stimulate effective domestic demand, and promote economic transformation and upgrading. As one of the pillar industries in Foshan, the ceramic industry in Foshan must be transformed and upgraded based on Foshan's long-standing ceramic culture, extensive radiation and brand technology. Technological innovation, energy conservation and environmental protection are our key points. In September this year, at the Foshan new industry development forum, we specially arranged the new ceramics forum. At that time, the mayor of Foshan attended the forum. We collected the new ideas of relevant experts on transformation and upgrading and energy conservation and environmental protection development, and reported them to the municipal government and relevant departments in the form of suggestions. In the production process of ceramic products, energy consumption accounts for a large proportion. The quality of raw material processing also determines the quality of products. Without good raw materials, there will be no good products. With the depletion of traditional raw material bases and the rise of raw material costs, it has an adverse impact on ceramics. The purpose and original intention of this forum is to promote the development of raw material processing technology and equipment towards high efficiency and energy conservation, and realize transformation and upgrading.

For a long time, Foshan Science and Technology Association has strongly supported academic groups in various industries in Foshan, organized and held relevant academic exchange activities, and gathered a group with the workers of the ceramic society, which has been committed to the technical progress of the ceramic industry. This forum is one of the academic activities of the 12th Guangdong Association for science and technology. The Municipal Association for science and technology holds such a forum, hoping to help enterprises learn more about and master new technologies, explore new ideas for industrial development through the application of new technologies, and promote the healthy and stable development of the ceramic industry. Finally, on behalf of Foshan Association for science and technology, I would like to extend warm congratulations on the holding of this forum. Thank you!

Fengbin, vice chairman of Foshan Association for science and technology and chairman of Foshan Ceramic Society, delivered a speech

Respected Minister Chen of the Association for science and technology, respected professor zhangboqing, Dr. Yinhong, respected experts and friends from the business community, good afternoon! Thank you very much for participating in the 2014 New Technology Forum on raw material preparation in the ceramic industry hosted by Foshan Science and Technology Association and organized by Foshan Ceramic Society.

In recent years, in order to meet the needs of the development of the ceramic industry, raw materials and preparation enterprises in the ceramic industry have been constantly discussing. In view of the current situation of ceramic production and application, they have developed a series of new, efficient and energy-saving special equipment for ceramic raw materials, which are used to solve the shortcomings of huge energy consumption and high consumption cost of ball milling ring in the traditional ceramic production process Great success has been achieved in dry milling.

We have always been committed to promoting the scientific and technological progress of the ceramic industry. We took this opportunity to host the new technology forum for raw material preparation in the ceramic industry. Industry experts, enterprises and technical elites were invited to further exchange here to show the industry the latest raw material technology and preparation development direction, hoping to take this opportunity to promote the raw material preparation technology and equipment of the whole industry to a new level.

Today's forum is rich in content, including Professor zhangboqing's lecture on the theory and new technology of raw material preparation in the ceramic industry. Dr. Yinhong was specially invited to preside over today's forum. I hope today's forum will be a success, a success and a harvest for everyone. Thank you for your participation, thank you!

Huang Bin, Secretary General of Foshan Ceramic Society and chief editor of Foshan ceramics, delivered a speech

Distinguished leaders, experts and friends, good afternoon. This is the site of the 2014 New Technology Forum on raw material preparation in the ceramic industry, sponsored by Foshan Science and Technology Association, organized by Foshan Ceramic Society, and co organized by Foshan ceramics magazine, mechanical equipment professional committee of ceramic branch of China Silicate Society, and China Ceramic City. Thank you for your participation and support in this forum.

In the process of ceramic production, the energy consumed by raw material processing accounts for a large proportion. At the same time, raw material processing technology also determines the quality of ceramic products.

In order to deeply explore the new progress and existing problems in the new preparation technology of the ceramic industry, and promote the scientific and technological progress of the ceramic industry, Foshan Association for science and technology hosted this forum, which was organized by Foshan Ceramic Association. The forum was strongly supported and sponsored by Foshan Bohui electromechanical Co., Ltd., Shandong Yike Energy Saving Technology Co., Ltd., Xiangtan Yida Electromechanical Equipment Manufacturing Co., Ltd. and Foshan Jingang enterprise group. Here, I would like to express my heartfelt thanks for their support!

The participants of today's forum include scientific and technological workers from ceramic industry product production, mechanical equipment, raw and auxiliary materials, testing and environmental protection enterprises, as well as enterprise bosses and management backbones. This is also the first time that the ceramic industry has held a raw material preparation technology forum. I hope the forum can bring you different feelings.

Distinguished chairman, leaders and guests, good afternoon. Today, I am very glad to have the opportunity to participate in such a forum, the Forum on new technologies for the preparation of ceramic raw materials. In my impression, this is the first time that the ceramic industry has held a forum on new technologies for raw material preparation in decades. In the past, although there were such contents on some occasions, it was the first time for a professional technical forum on this topic. Previously, the industry paid more attention to the press, but paid little attention to the raw material crushing technology, but made great progress in recent years.

Today, I would like to introduce the current ceramic raw materials and preparation from four aspects. They are: intermittent mill + intermittent mill; Intermittent ball mill + continuous ball mill; Magic fast grinding + intermittent grinding or magic fast grinding + continuous grinding; Current new technologies and equipment.

First, intermittent mill + intermittent mill. In the grinding process, the size of the material is different, and the requirements for the size of the grinding body and the rotation speed of the ball mill are different. Therefore, some enterprises can also save energy by adopting this mode. The data I get can save 15% - 18%. However, it is not widely promoted because there are many sands and stones.

Second, intermittent ball mill + continuous ball mill have solved the problem of batching and material transportation, and overcome the difficulty of continuous ball mill in China. It was invented in China. In foreign countries, it is either intermittent mill or continuous mill. Through this method, China has found a way to promote continuous grinding, because this combination solves the problem of batching. It can solve the problems of batch grinding in the previous stage and the original material proportioning system of the whole ceramic factory. These materials are put into the slurry pool and pumped into the continuous mill by a pump, which solves the problem of feeding materials to the continuous mill. This is a better way.

The third method is magic fast grinding + intermittent grinding or magic fast grinding + continuous grinding. This idea means that materials with different particle sizes are grinded by different grinding equipment from large to small. Such a combination can greatly improve the grinding efficiency. Moreover, after Shengong fast grinding + continuous grinding, it can solve the current situation that the raw material workshop mainly depends on manual work and the automation level is not high, and it is easy to realize the automatic crushing of the raw material workshop. These are several current processes.

The fourth part is the current new technology and equipment. First, the continuous mill basically adopts the multi unit continuous ball mill. The so-called multi unit means that the original single intermittent ball mill is connected in series. Each intermittent ball mill has its transmission mode, which can operate according to its ratio and speed, and also solves the difficulty of cylinder manufacturing. At present, this should be a better scheme. Because of different cylinders, the configuration and rotation speed of the grinder can be adjusted to achieve the best matching state.

The above is the basic status quo.

Lianghaiguo, general manager of Bohui electromechanical brand: advantages of Shengong fast grinding

First of all, compared with traditional ball milling, Shengong fast milling. The traditional process has no requirement for moisture in raw materials, but the Shengong fast mill has such requirements, so it is convenient to control. The disadvantage is that the milling time is long and the efficiency is low. The traditional ball milling process for raw materials is to grind mud, sand and large blocks of stone into balls, and store them after ball milling. In this process, the general ball milling time in Guangdong area is 12-16 hours, and the power consumption is 38-45kwh/t. We have also done some projects in Jiangxi and Hunan during this period. It takes more than 16 hours in Hunan area. The project in Jiangxi is 22 hours. The traditional ball milling takes a long time, and its efficiency is relatively low. It often has over grinding. The power consumption is relatively large, 38-45 kwh in Guangdong and above 40-45 kwh in other provinces. There is less active work in traditional ball milling, and 60% of the electric energy is used for reactive work. The material consumption of pebble and ball lining is large, and the cost of ball milling is high. This is the advantage and disadvantage of traditional ball milling.

The process system of Shengong fast grinding is mainly used to crush the materials in the formula, and the soft materials, ingredients and hard materials are carried out synchronously after ball milling. This principle is that all materials in the ball mill can reach the pressure release standard synchronously, and energy saving can be realized in the ball mill. Through this process, the ball milling time of continuous ball milling is 7-9 hours. Traditional ball milling takes 15-16 hours in Guangdong area. After treatment, it will take about 7-8 hours. The time of ball milling is reduced by more than 40% and the power consumption is 21-25 degrees, while the traditional ball milling consumes 38-45 degrees.

The advantages of Shengong fast grinding are compared with the previous ones, and the ball milling time is saved by 40-55%; The comprehensive power saving rate is 25-30%; The material consumption saving rate of pebble and ball lining is more than 25%; Whiteness will be increased by 1-3 degrees. Here, we want to explain the problem of improving whiteness. At the beginning, we didn't understand why whiteness would increase. We have two group companies using our products, and they both experienced the same increase in whiteness. After investigation, we learned that this process is mainly between the pebble and the raw material, and the whiteness of the raw material itself is higher than that of the pebble and the ball lining. We reduced the milling time, thus improving whiteness.

Of course, Shengong fast grinding also has disadvantages, that is, it has requirements for the moisture of raw materials. In Guangdong, it often rains in the rainy season, and the water content is very large. The efficiency of Shengong quick mill will be significantly reduced. Therefore, we now also require the comprehensive moisture content to be about 10% - 11%. In order to meet the requirements of environmental protection, the raw material workshops in all production areas need to be sealed. Another disadvantage is that the process formula (early stage) needs to be fine tuned. When the pebble and ball lining become smaller, the water content will become smaller.

The longest time for traditional ball milling is 16 hours, that is, all raw materials are grinded. However, the process of Shengong fast grinding is that the particle size into grinding is the same, so as to reduce over grinding. The main reason why Shengong fast grinding process is more energy-saving than traditional process is that after Shengong fast grinding and crushing, the mineral structure of materials is slightly cracked, which is easy to be grinded by vertical mill. Through treatment, power and energy saving of ball milling can be realized.

Let's take another look at the comparison between Shengong fast grinding and continuous ball milling. Now there are two kinds of comparison of continuous ball. It takes 9-10 hours to pre ball mill with ball mill, and then score and out of the mill; We can shorten the time by half and finish it in less than 5 hours with magic fast grinding. In addition, in a more ideal state, we put all materials other than mud into Shengong fast grinding, so we don't need to mill the ball.

Now let's look at the system. Shengong series has two systems, the first is Shengong fast grinding and the second is dry milling.

The main principle of Shengong dry milling system is to pre crush the dynamic ingredients of various raw materials into the fine grinding process, and collect and store the fine powder that meets the particle size requirements. Its advantages are: less investment, low energy consumption, can significantly reduce product costs, less pollution, low emissions. This is the result of comparison between the data provided by LB and the data provided by several large groups according to Chinese materials. At present, the focus is on two systems. One is the daily output of 645 tons, and the other is 900 tons.

Due to its multiple advantages, the Shengong dry milling system will have a huge market in the next few years to solve the pressure of cost and environmental protection in China's ceramic industry, because environmental protection and cost pressure are very urgent for enterprises. LB has nearly 20 years of dry powder production experience. We took our customers to see lb, one of the most frequently visited factories, whose equipment has been used for 19 years.

Bohui has a perfect operation and after-sales service network in China. We promise all customers in Asia that we will provide 1-hour service in the main production areas, that is, after customers call, our after-sales personnel in the main production areas will arrive at the site within 1 hour, and those in non main production areas will arrive at the site within 24 hours. We will continue this commitment in terms of after-sales service.

It is believed that through the strong alliance between LB and Bohui in Asia, LB will bring good equipment and very good after-sales service to China's ceramic industry, and there will be a smooth process in China. The cost of the whole system will be recovered in about 18 months. According to our own calculation, we can save 45% - 50% of the cost per ton of powder by wet and dry methods.

Thank you very much for the opportunity. If there is any communication, it is OK after the meeting, and it is OK now. Thank you!

Yaochangqing, chairman of Shandong Yike Energy Saving Technology Co., Ltd.: dry milling is a necessary technical advantage for transformation under the pressure of environmental protection

Dry baking powder is not a business for one company. It is a revolutionary thing for the current industry. The cement industry has completed the process from wet process to dry process 20 or 30 years ago. Cement was first wet, but now there is no wet in China. When we look at other industries, people have already gone this way. In terms of the development trend of the ceramic industry, dry process is the trend. But will the wet process eventually be completely replaced? I think it is possible with the progress of technology and technology. But it is estimated that it will be completely replaced within 5 or 6 years, which is not realistic. However, at this stage, a certain proportion of production lines will use dry process within 3 or 5 years, and there will be a certain progress. This is my prediction.

The technical characteristics of dry milling are grinding and drying optimization. For dry grinding, there are two grinding methods, including vertical grinding, Raymond grinding and CT grinding. Grinding is a relatively mature technology. There are very professional companies doing this. Drying optimization system. I won't talk more about optimization. This is our patent, which can be found. For drying this piece, we choose a three-layer vulcanization bed, which occupies a small area and has high efficiency. At present, the drying efficiency is twice as high as that of single layer. This is also developed jointly by us and another company.

DCS system, starting from batching, is basically controlled by computer and only controlled by one person. During the actual operation of this system, 3 or 4 people are required, including one patrol inspector before and after the system, plus the team leader and operator. In 2012, we made a pilot test line for the whole system, which has been running intermittently for 2 years. At the same time, we have conducted pilot tests in 50 or 60 factories and mastered a large number of first-hand data. The pilot tests are all over 10 tons, including all kinds of products, which we have done. There are successful, unsuccessful, where is unsuccessful, successful, what is the good? We have a lot of data. On the basis of the data, the pilot test line has been operated for two years. The stability and durability of the operation have been improved. Then there is a practical case. At present, the line is in good condition. The mold may be changed at the beginning of the month. After the change, it can be used at the beginning of December. If you are interested, you can visit it. So far, there are 6 enterprises with high intention to cooperate in this system and have entered the contract design stage.

I have great confidence in the future of dry milling technology. From the example of haze control in Beijing, it is easy to control haze. As long as we stop a batch of smoking factories, Tianma will turn blue. This may be a good thing for us. Why? If this standard is really adopted in the future, I believe that more than 90% will not be met. 90% are optimistic data.

What about the future? Go dry. First, don't smoke. There are many people who have found us this time. I don't want to emphasize that economically, whether you change or not in the future has become a fatal thing, because if you don't change, you can't do it. You won't be allowed to do it. Now a factory in Anhui has found me in the scenic spot. Either don't smoke or move away. You can do it in there, but don't smoke. What should I do? Can the wet method not smoke? What should I do? Change to dry method. This is a talisman of life and death. If it is removed, it will cost too much.

Dry process, the significance of environmental protection may be greater than that of economy in the future. This is my personal view. For the future development of our industry, it is not a question of whether we want to use it or not. Our project has been listed as the key promotion project in 2015. If there is no dry method, can wet method be used? No. There is no need to do anything. The threshold cannot be crossed. It is already the policy threshold, not the economic threshold. If you don't, you can't do it. So I think in this respect, this aspect is of greater significance.

Zhoubihui, general manager of Xiangtan Yida Electromechanical Equipment Manufacturing Co., Ltd.: the advantages of continuous ball mill are obvious

The advantages of continuous ball milling mainly include the following aspects:

First of all, in the area of electricity saving, each ton of steel powder, the formula and raw materials of each ceramic factory are different, which can save about 10% - 15% of electricity. Why so much? Recently, the formula of polished bricks in Jingpeng contains more hard materials with high hardness, and the effect is below 15%, between 10% and 15%. Jingpeng achieves 15% - 20% energy saving effect, and the power saving is between 10% - 20%. According to the specifications of each porcelain factory, formula and production brick, the energy saving is also different, but it generally fluctuates up and down within this range. If the continuous ball mill and intermittent ball mill are used together, the unit power will be about 31 ℃ per ton of powder.

Secondly, the pebble, water and raw materials in the ball mill cylinder shall not exceed the center of the ball. Each section of the triad continuous ball mill undertakes different grinding tasks. The first section is subject to rough grinding. When it is ground to a certain extent, it enters the second section for medium grinding, and then enters the third section for fine grinding. It will not be the same as the intermittent ball mill. Those that have been ground to the standard will wait for the coarse particle grinding. Continuous feeding and discharging can be realized to reduce the time of large amount of loading and discharging.

Third, those that can be ground first and meet the standard can flow away first, and those that do not meet the standard can be ground again.

Fourth, the ball of the continuous ball has a standard belt groove, and then uses a standard triangle belt to drive the cylinder to move. This is in line with the principle of machinery, and the loss is in line with national standards. The intermittent ball drives the smooth cylinder without belt groove with a V-belt.

Fifth, other advantages. Energy saving and consumption reduction are significant. Compared with intermittent ball, it can save more than 20% energy. High production capacity, stable quality, small floor area, site saving and less basic investment. Modular design is adopted. According to the characteristics of raw materials, the configuration of modules can be flexibly adjusted, such as two in one, three in one, four in one, etc. It occupies a relatively small area and saves cement foundation. Therefore, through the 8-month continuous ball mill production in Enping and the production of Jingpeng, the high-grade bricks are made in Jingpeng, and the requirements are very high. We have obtained a data that the continuous ball mill conforms to the current development trend. That is to say, the greater the output of the raw material ceramic factory of the continuous ball mill, the greater the advantages our continuous ball mill shows. The continuous ball mill should be based on its rules. The advantages of the continuous ball mill + vertical mill are more significant. In the past, we have developed such a set abroad, pouring slurry and continuous grinding at the same time. The grinding effect is better, the energy-saving effect is more significant and the output is larger. Continuous ball milling is more sufficient.

There is also a point to be made. The above experts also mentioned dry milling, Shengong fast grinding and continuous ball mill. The birth of our equipment still has certain conditions for raw material processing. Why do you say that? Now, where ceramic factories are concentrated, the requirements for environmental protection and the environment are becoming more and more strict. The impact of raw materials on the environment is very headache, with high energy consumption and large environmental pollution. It is also very difficult to pass the pass of environmental protection. If we set up a raw material processing center in a nearby mine, I don't know if this proposal is mature. We should invest the national government in environmental protection to improve the environment and try to change the environmental investment. The government set up a raw material processing center last year, and there will be clean production. As for the raw material processing center, I heard that Shandong seems to have started to develop raw material production equipment. By concentrating this technical force and financial advantages, there is still a foundation for the environmental protection of ceramic factories and further improving ceramic raw material equipment to a better level. In this way, each ceramic factory and ceramic equipment enterprise will fight alone with limited strength. It is necessary to solve the problem locally. In such a centralized place as Foshan, of course, the situation of each manufacturer is different. Think about it. You can also contract a raw material production line in the raw material center. This is my suggestion to integrate advantages and solve environmental protection problems, so that ceramic factories can operate intensively in raw material processing, which can reduce raw material production costs and solve environmental protection problems. Thank you.

Suxiaohong, general manager of Pingxiang Jingang Technology Co., Ltd. of Foshan Jingang enterprise group: grinding technology service helps mill save energy and reduce consumption

I will mainly make a speech on energy saving and consumption reduction from the upgrading of ceramic powder making. We are based on the current situation. With the upgrading of ceramic equipment, what about the original ball milling? It is mainly based on the existing equipment, combined with ball milling at the technical level to achieve the effect of energy saving and consumption reduction.

At present, the intermittent ball mill is the most common production equipment in the raw material production process of China's ceramic industry. The power consumption in the production process of preparing ceramic slurry by grinding machine accounts for 50% or more of the total power consumption of ceramic enterprises. Common problems in slurry preparation process of mill: long milling time, high power consumption per unit and large energy consumption of pebble, etc. The attention of raw material production management personnel to reducing the production cost of mill pulping process is focused on reducing the consumption of pebbles.

Our grinding technology has achieved results in the practical application of polished bricks, exterior walls, antique, daily-use ceramics and other ceramic production enterprises. Combined with the achievements of grinding scientific research, and combined with practice, the service of energy saving and consumption reduction was carried out. Compared with the existing technology, we have three advantages. First, we do not need to sacrifice much equipment, because the equipment investment cost is very large, especially in a bad market environment, investment is a major event. Second, do not increase costs. Third, do not increase capital investment.

Specifically, our technical services are divided into two types, one-stage grinding technology and two-stage grinding technology. The first stage is the interval wet ball mill and the second stage is the preparation method of ball milling. Now it has entered the substantive review stage.

The following describes the actual use of one-stage grinding and two-stage grinding in ceramics.

One stage grinding has three effects: first, it saves more than 10% of the ball milling time; Second, save electricity by more than 10% and increase ball milling output by more than 5%. For specific examples, I didn't name the manufacturer, but since our production in 2011, a 40 ton ball mill of a polished brick and ceramic manufacturer in Guangdong has used aluminum balls in bauxite as the grinding medium. There are two pieces, one is the base material, and the other is the fabric. By comparison, we can reduce the milling time by 2 hours / ball, reduce the power consumption by 5 degrees / ton, and increase the mill feeding by 3 tons / ball. We promise that if we fail to achieve the results, we will bear all the costs ourselves.

It is explained here that the use of Pingxiang diamond zirconium aluminum ball can increase the whiteness of the fabric body by 0.5-1.0 compared with the use of aluminum ball in bauxite, and correspondingly reduce the amount of fabric brightener by 5-10%. It is not that we have an advantage in the grinding medium, but that the iron content of the aluminum ball in our bauxite is between 5 and 6 points, and its wear is relatively large. Our wear rate is 3 times that of medium aluminum ball, which is 3 times lower than that of medium aluminum ball. Second, our iron content is below 5%. Iron and titanium are a little melted in. In fact, there is pollution in whiteness.

In the outer wall tile ceramic production enterprises in Fujian, the screen residue is 1.5-1.8. The milling time is reduced by 3 hours / ball, the dosage is reduced by 6 degrees / ton, and the milling output is increased. The application of daily-use porcelain is relatively small. A 5-ton ball mill was used. At that time, pebbles were used instead of 1.0-1.5% of the residue of the slurry sieve. The power consumption of the slurry was reduced by 18 degrees / ton, and the feeding of the mill was increased by 0.8/ ball, which was more than 3 times lower than that of the aluminum ball. Another note: the ceramic industry in most parts of the country has periodic electricity prices, which are more than 50% lower than the electricity prices in Pinggu. With our words, we can reduce the time, not only reduce the electricity consumption, but also reduce the cost from the structural aspect of electricity prices. In Jiangxi, some places use electricity as the main basis for taxation, so how to reduce electricity consumption is also their top priority.

Two stage grinding technology, we are intermittent ball milling + intermittent ball milling. In this regard, the current results are as follows: the ball milling time is saved by more than 20%, the power consumption is saved by more than 20%, and the ball milling output is increased by more than 5%. In a polished brick and ceramic manufacturer in Guangdong, the ball milling time was reduced by 4 hours / ball, the power consumption of slurry was 12/ ton, and the mill was fed by 4 tons / ball. The effect of the base material is the same as that of the fabric.

Introduce the general situation of our technical service. For each customer, we will send our engineers to the site to understand the status of ball milling production process, including process parameters, sieve residue, specific gravity, particle size, adjustment of pebble and mill configuration. Including the current level, and then customized. The proportion of pebbles in many ball mills is basically fixed. If it is not 232 or 2332, our proportion will change according to the situation of customers. Next, the technical service provided to the customer is not all right after the goods are delivered. Our technical engineers will be stationed in the factory regularly or irregularly for technical services.

The above is my superficial speech. If there is anything wrong, please give me more advice.

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