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Talcum powder is a basic raw material with a large amount in fragrant powder. It spreads evenly, has good smoothness, and has a certain gloss. The talc powder suitable for fragrant powder must be white, odorless, and have a soft and smooth feel, and its fineness must be at least *% to pass through the sieve mesh of *** mesh, the finer the better. Talc has excellent physical and chemical properties such as lubricity, anti-adhesion, flow aid, fire resistance, acid resistance, insulation, high melting point, chemical inertness, good hiding power, softness, good gloss, strong adsorption, etc. Its crystal structure is layered, so it has the tendency to easily split into scales and special lubricity. If the content of ** is high, its insulation will be reduced. Talc is soft, with a Mohs hardness coefficient of ** and a slippery feel. The {001} cleavage is very complete, and it is easy to crack into thin slices. The natural rest angle is small (* ° ~ * °), extremely unstable, and surrounding rocks It is silicified and talcized magnesite, magnesite, lean ore, or dolomite marble. Except for a few moderately stable, it is generally unstable. Joints and cracks develop. The physical and mechanical properties of ore and surrounding rock affect the mining process Is great.
How much is the vertical roller mill equipment for processing talc powder and how much is a set of talc powder processing equipment? With the continuous promotion of the needs in the industrial field, the performance of vertical mill grinding equipment has been significantly changed, making talc powder, limestone powder, etc. The scope of application of minerals has also been greatly expanded. The application of talc in industry and other fields generally appears in a powder state, that is, talc. Therefore, in the selection of talc processing equipment, the vertical mill Choice is crucial. Nowadays, the domestic mining machinery mill industry has gone through an extensive development stage relying on the advantages of cheap labor and sacrificing the environment. It has gradually become an international low-carbon economic development trend, the rapid development of the industrial milling equipment industry market, and the country. Increased requirements for resource utilization, energy saving, environmental protection, and consumption reduction, and high-tech industrial milling equipment will usher in opportunities for development.
As a manufacturer specializing in the production of mills, SBM Heavy Machinery has always been guided by customer needs and provides users with professional and reliable industrial milling equipment. SBM heavy-duty vertical mill mill products have been tested by the market and enjoy a high reputation among users. The products have uniform fineness of finished products, high sieving rate, low loss of wearing parts, large output, environmental protection and no pollution. Advantages can meet the different needs of the milling industry.
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After the user purchases the raymond mill, it needs a period of wear and tear after the installation is successful. During this period, the various parts of the equipment are more coordinated, and during this period of debugging, some problems can be found and solved in time to ensure the equipment Work went smoothly. So what problems do Raymond mills easily encounter in the early stage?
First of all, because of the newly processed parts of the Raymond mill, there are deviations in geometry and fit dimensions. When initially used, they are affected by loads such as shock and vibration, as well as heat and deformation, and the wear of equipment components Quickly, loosen the original fastened parts.
Secondly, due to factors such as processing, assembling and adjusting of Raymond mill parts, the friction surface is relatively rough, the contact area of ​​the mating surface is small, and the pressure condition of the surface is uneven. Therefore, it is easy to cause component wear during the running-in period, resulting in faster component wear.
Thirdly, due to the looseness of the components of the Raymond mill, the vibration and the heating of the equipment, the sealing surface of the equipment and the pipe joints will leak.
Then, because the new users did not know enough about the internal structure and performance of the Raymond mill, it caused operational errors during the production process and caused failures, and in some cases, the equipment was scrapped.
Finally, the above is about some problems encountered in the initial use of Raymond mill. Shanghai SBM Co., Ltd. has been specializing in Raymond mill for many years. Its equipment models are all affordable, good quality, and are welcomed by the customers around. At the same time, if the user encounters a problem that cannot be solved by himself during the production process, he can ask professional personnel to solve it, and not blindly deal with it.
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Raymond mill is the key equipment in the industrial milling industry. Its quality directly determines the production efficiency and output, but there are many factors that affect its production efficiency. For example, the quality of parts determines the performance of raymond mill As a very important blade in the accessories, if the blade is worn out, it will cause the Raymond mill to not operate normally, which will reduce the production efficiency and eventually lead to the production being unable to reach the budget, so the blade It has become a key part of it. Let's analyze the importance of the blade and what factors cause the blade wear.
We all know that the blade is used to send the required grinding material to the grinding roller and the grinding ring for direct grinding. If there is a problem with the blade, the grinding machine cannot normally perform the grinding operation, and eventually This directly leads to a decrease in production and a decrease in production efficiency. Therefore, before and after work, the bolts of the Raymond grinding blade are not loosened. If the wear is serious, replace them in time. Pay attention to the blade type when replacing. In the end, the maintenance and maintenance of the Raymond mill should be done well, so that it can be solved before the problem occurs, and the performance of the equipment can be effectively improved.
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Since the beginning of the 21st century, the demand of mining machinery market is strong. The relevant data shows that the growth rate of mineral powder products in China is stable between 35% and 46%. Market demand not only drives the economic growth of mining machinery manufacturing industry, but also directly promotes the technical development of the whole industry, and a batch of large-scale advanced products with independent intellectual property rights emerge. SBM ultrafine mill is one of the industry application model equipment.
According to the modern market demand, the large-scale of high-tech equipment is one of the development trends of mining machinery. The expansion of domestic mine development scale requires the large-scale equipment specifications. The small size of the ultra-fine grinding machine is hgm80, with a volume of about 13.9x4x6.2 (m). The model is hgm1680, with a floor space of 26.3 * 7.5 * 11.9 (m). Successful realization of large-scale production equipment requirements.
One of the requirements for users to purchase equipment is resource-saving process and equipment, including energy utilization rate, consumption index of equipment wear-resistant materials, water and electricity consumption index of equipment processing, etc. These requirements can not only reduce the cost of production, but also meet the national requirements for modern large-scale mechanized production. In the research and development of ultra-fine grinding machine, SBM adopts pulse dust collector to capture dust and muffler to reduce noise, which has the characteristics of environmental protection and cleaning. In the case of the same fineness of the finished product and the same power of the motor, the output of the mill is more than twice that of the air flow mill, the stirring mill and the ball mill. The grinding roller and ring in the grinding chamber are forged with special materials, which can last for more than one year. When processing calcium carbonate and calcite, the service life can reach 2-5 years.
According to the needs of customers in recent years, the needs of customers in processing equipment technology and personalization are gradually emerging. The new two-stage interleaving processing technology is adopted in the ultra-fine grinding mill, the main shaft passes through the upper stage rotary table and the lower stage rotary table; the upper stage rotary table and the lower stage rotary table drive the upper stage grinding roller and the lower stage grinding roller respectively through the upper stage roller pin and the lower stage roller pin, and make the rotary motion in the ring of the upper stage grinding ring and the lower stage grinding ring. The new-type two-stage interleaving ultra-fine grinding machine can distribute energy reasonably, improve production efficiency and save energy more. The practice shows that the fineness distribution of the finished product is more uniform.
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Raymond mill is an important equipment in a mine milling production line and a relatively common equipment in various milling industries. However, as a mechanical device, some problems will occur in daily work, such as incomplete milling. Situation, what are the reasons leading to this situation? And how should we solve this situation? The following is the answer for everyone.
First of all, in terms of materials, because different types of raymond mill have different ranges of materials, if the hardness or size of the materials exceeds the range that the equipment can grind, it will cause some vulnerable parts to wear and increase the difficulty of grinding, thus Decreasing the working efficiency of the equipment and the phenomenon that the materials cannot be fully ground, so when choosing the equipment, you must choose a Raymond mill suitable for your model, so as to help the later processing and production.
Secondly, if the voltage is unstable during the milling operation, the function of the equipment cannot be fully exerted, which will not only cause easy damage to the motor, but also cause incomplete grinding. Therefore, stable voltage is also one of the conditions to prevent the incomplete grinding of Raymond Mill. Therefore, check whether the voltage can meet the requirements before production, and then carry out the production operation.
Finally, the grinding roller ring and blade, which play an important role in milling, have been worn out for a long time. If it is not worn out in time, it will cause incomplete grinding of the material if it is produced. Personnel should regularly inspect and maintain the equipment to ensure that each component can achieve efficient operation.
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Calcium carbonate is a major component of limestone, which is the main raw material for the production of glass. Lime and limestone are used extensively as building materials and are important raw materials for many industries. Calcium carbonate can be directly processed into stone and fired into quicklime. Lime has quicklime and slaked lime. The main component of quicklime is CaO, which is generally in the form of a block, pure white, and pale gray or yellowish when it contains impurities. Quicklime absorbs moisture or adds water to become hydrated lime. Slaked lime is also called slaked lime. Its main component is Ca(OH)2. The slaked lime is formulated into a lime slurry, a lime paste, a lime mortar, etc., and is used as a coating material and a tile adhesive. The cement is prepared by mixing limestone and clay and calcining at a high temperature.
Limestone is a relatively common ore material in the market and a non-metallic mineral that is widely used. The market's limestone powder can be mainly divided into single fly powder, double fly powder, three fly powder and four fly powder, etc., which are widely used in construction, coatings, fillers and chemical and chemical fields. The chemical plant for producing calcium carbonate is mainly for the grinding and processing of limestone. If the size of the raw limestone is large, it needs to be crushed and pulverized first. The production line equipment that will be deployed in the limestone powder factory is TL jaw crusher + vsi sand making machine + TL vertical roller mill, of which TL vertical mill is the preferred equipment for large-volume industrial milling. The grinding equipment produced by SBM heavy machine has CM coarse grinding (0-80 mesh), TL vertical mill grinding machine (80-425 mesh, ultra-fine vertical mill (600-1250 mesh) and TL medium speed stand Grinding mill (800-3250 mesh) can meet the different needs of the market.
TL vertical mill grinding machine working principle: TL vertical mill is mainly composed of electric motor, reducer, grinding roller device, grinding disc device, pressing device, classifier, body, oil station, host PLC electronic control system and other parts. The main motor drives the grinding disc to rotate through the reducer, and the wind enters the vertical mill body from the air inlet. The material falls through the feeding port of the screw feeder in the center of the grinding disc. Under the action of centrifugal force, the material moves evenly from the center to the edge of the grinding disc. When the grinding roller area on the grinding disc is crushed by the grinding roller, the bulk material is directly crushed, and the fine material is pressed to form a material bed for intergranular pulverization. The pulverized material continues to move toward the edge of the disc until it is carried away by the strong airflow at the wind ring, and the larger particulate material is again dropped onto the grinding disc to continue pulverization. When the material in the airflow passes through the upper separator, the rotor Under the action of the blade, the coarse particles are returned to the grinding disc for grinding. The qualified fine powder is ground together with the airflow and collected by the system's dust collector. The collected powder is the product ground by the vertical mill. When the iron block and other impurities mixed into the material move to the edge of the grinding disc, they cannot be blown by the wind due to their own weight, and fall to the lower chamber of the mill. The scraper plate installed at the bottom of the grinding disc is scraped into the slag discharge port and discharged outside the machine. . By adjusting the rotational speed of the rotor of the multi-head classifier, qualified products of different fineness can be obtained.
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Ultra-fine grinding machine bearings, grinding roller rings, blades and so on are wearing parts, which is a good assistant for the production efficiency of the equipment, but the frequency of inspection and replacement is indeed a headache for users, and even more so requires two It is not normal to change it once every three days. In this way, the cost of the accessories, the production time of the delay, etc. are all large losses to the user. Will this phenomenon be a quality problem of the ultrafine mill, or is it a problem with the part itself? How to prevent this
The reason why the consumables have this name is because its own volume is relatively the same as that of the ultra-fine mill. Although it is the tip of the iceberg, the role that can be played is really crucial. They support each other, and the brothers work together to grind and grind the material again and again until the finished product reaches the particle size required by the user before processing the next round of materials. In order to give the ultra-fine mill good production efficiency and good finished product quality, such as moths, the fire is step by step toward scrapping. Their shortevity can be left silently and selflessly.
If you want to extend the service life of the wearing parts of the ultra-fine mill as much as possible, save these costs and improve the production efficiency, you need to listen to the suggestions of Shanghai SBM Machine Co., Ltd. Xiaobian:
First, according to the specified installation tools for each part of the ultra-fine mill, especially the precision parts such as grinding rolls, grinding rings and bearings, each type of ultra-fine grinding machine has the specified type of wearing parts. Periodic cleaning time schedule, etc., pay more attention to inspection and maintenance, the amount of addition, the way of adding should be accurate. In addition, after the installation is completed, it is necessary to check carefully, and then carry out the production work after checking with the professional instrument.
Second, the installation of wearing parts must have a certain order and time limit, in accordance with the completion of the sealing must be kept up, some manufacturers of ultra-fine grinding machine only use two sealing devices, the effect is poor, often into the powder contaminated bearings The SBM ultra-fine grinding machine adopts 5 sealing devices, and the sealing effect is good, which can strictly control the amount of dust entering and extend the period of use.
Third, avoid excessive temperature and make the wearing parts fatigue. When it is found that the temperature exceeds the safe use range, it should be stopped to dissipate heat or adopt certain cooling measures. GM also recommends that users plan their production and schedule to avoid long-term continuous operation. operation. The combination of work and rest is more conducive to the efficient production of ultra-fine mills.
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1. Can precision castings be thin-walled castings?
Precision castings are one of the castings that preheat the molded casing at high temperatures. If the casting is slow, thin-walled castings are available. So the answer to this question is yes, if it's not ferrous, it can be done by die casting.
2. Can water-soluble iron cores be used for Precision casting?
For cast products, the core can be used with water soluble cores, but with specific requirements. In general, if the casting structure is not suitable for demolding, a water-soluble core can be used on the core to obtain a good release effect.
3. Does pickling need to be used in precision casting production?
In this case, from a professional point of view, it is necessary to look at the actual situation. If the surface of the casting has dirt or scale, it needs to be pickled to remove these for passivation and the like. If not, it is not necessary. Therefore, this question is difficult to answer because it depends on the actual situation.
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Nowadays, the pace of urban construction is accelerating, urban transformation can be seen everywhere, and the amount of construction waste generated is also very large. Construction waste is a factor that has a great impact on the urban environment. There has been no proper treatment method before, resulting in a certain degree of impact of construction waste on the urban environment. At the same time, this is also a waste of resources. Now there is sand production. The application of machine equipment in construction waste makes the construction waste comprehensively and efficiently utilized.
The sand making machine equipment can carry out the sand making work in the construction process, and the processing waste of the construction waste forms the renewable utilization of resources, and provides high quality gravel aggregate for the infrastructure construction in China. The aggregate produced by the sand making machine for construction waste has a relatively high strength, hardness, wear resistance, impact toughness, frost resistance, water resistance and the like. High strength and good stability. It can produce graded crushed stone, crushed lime soil, two-ash stabilized graded gravel, cement stabilized graded gravel for municipal engineering road base and trench backfill material, replacing some natural stone. If a soil hardener is added, a small amount of quicklime and cement can be saved.
The sand making machine equipment can now comprehensively handle the construction waste. Reprocessing the waste to produce sand and gravel while treating the construction waste can recycle the resources.
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