Desulphurized gypsum made into gypsum powder what equipment gypsum powder processing equipment process

With the development of infrastructure, gypsum, limestone has become an indispensable building materials in the building. After deep processing, can be used for power plant desulfurization, cement retarder, gypsum construction products, model production, medical food additives, sulfuric acid production, paper filler, paint filler. Gypsum powder for power plant desulfurization, absorbent utilization is high, is the most used a desulfurization process, high sulfur coal, desulfurization rate can be more than 90%, low sulfur coal, desulfurization rate can be more than 95%. And processing gypsum powder to use gypsum mill, then the gypsum powder process is what?
Gypsum can be used after deep processing, in order to be able to stabilize the production of calcination, the different grades of gypsum in the homogenization field for pre-homogenization. And then the gypsum fed by the feeder evenly into the jaw crusher, broken into 50-60mm particle size, and then by the impact crusher crushing, broken into 10-25mm particle size, a feeder into the mill for grinding fine.
Gypsum deep processing process can be summarized as gypsum stone broken, calcined, grinding three processes. First gypsum ore using jaw crusher, crusher crusher to about 30 mm, transported to the mill for fine grinding. The fineness of the product to be achieved by the powder is increased by the fineness of the gypsum powder into the rotary kiln. The non-conforming will be returned to the milling machine for fine grinding until the product size is calcined.
SBE specializes in the production of various types of ore milling equipment, Raymond Mill, the European version of trapezium milling machine, vertical mill, ring roller grinding, including the entire mill production line, good performance, affordable, welcome Users come to buy.

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Application of Mill in Desulfurization System of Limestone Gypsum Powder in Power Plant

In recent years, most areas have been affected by haze weather, the thermal power plant is one of the main channels of air pollution. With the country to increase the intensity of environmental protection, thermal power plant sulfur dioxide emissions increasing, the State Environmental Protection Administration requirements, thermal power enterprises must build supporting desulfurization and denitrification device. The major thermal power plants on the desulfurization system is also more and more attention, how to choose the appropriate desulfurization process and desulfurization equipment to become the power plant equipment procurement staff first concern.
Desulfurization process commonly used limestone – gypsum flue gas desulfurization, flue gas circulating fluidized bed, water film dust desulfurization integration technology. Among them, the limestone – gypsum desulfurization, is the world’s use of more mature, extensive technology, this technology is developed in the fifties and fifties, the United States, Japan, Germany, thermal power plant used flue gas desulfurization device about 90 % Using this process.
Limestone – gypsum desulfurization works by: the large pieces of limestone grinding into stone powder, and then into the limestone slurry preparation system, the limestone into a slurry as a desulfurization absorbent, and into the absorption tower of the smoke contact mixing, flue gas Of the sulfur dioxide and the slurry of calcium carbonate and into the air for chemical reactions, and finally the formation of gypsum, the flue gas in the sulfur dioxide out, to avoid the large number of emissions caused by environmental pollution. Since the absorber slurry in the absorption tower is repeatedly circulated through the circulation pump in contact with the flue gas, the utilization of the absorbent is high. Limestone / lime method is the world’s most widely used FGD process, high sulfur coal, desulfurization rate can be more than 90%, low sulfur coal, desulfurization rate can be more than 95%.
Limestone – gypsum flue gas wet desulfurization process is mainly equipped with equipment: dedicated absorption tower, conveyor, defogger, heat exchanger, etc., and supporting the desulfurization mill auxiliary production. Desulfurization mill is the main role is the production of limestone, gypsum desulfurization powder, is indispensable equipment. Since the limestone slurry in the absorber must be kept active and the activity of the desulfurizer is maintained only by periodic replacement, it is important to prepare a limestone slurry with a dedicated desulfurization mill to process the limestone powder. Desalting agent in the limestone powder quality, fineness, particle distribution will affect the desulfurization effect. Therefore, the choice of a good grinding machine equipment is to create a good desulfurization agent and then achieve efficient desulfurization, the protection of the environment the first condition.
Developed by the SBE to create a new type of desulfurization mill, the use of advanced technology, is to process power plant desulfurization powder, to improve the quality of the first ore grinding equipment. The equipment is stable, covers an area of small, low noise, less dust, energy saving and environmental protection, the grinding of the product particle size distribution, particle size adjustment is convenient, in line with desulfurizer particle size distribution of the best range, with a good power plant desulfurization The normal operation of the system, fully meet the needs of large thermal power plants.

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The role of stone powder in commercial concrete

Stone powder is produced in the process of sand, stone production process of less than 75μm particle size of the powder material, fineness of the larger, many manufacturers of gravel aggregate manufacturers think that stone powder useless and abandoned. However, with the study of sand and gravel sand, it is found that the amount of stone powder can improve the grain gradation of the working sand, and also fill the inside of the concrete. Some stone powder also has hydration activity and can participate in water Chemical reaction, the improvement of concrete performance.
According to the investigation and analysis, it is shown that the appropriate amount of stone powder has certain influence on the performance, strength and durability of the machine sand concrete. By analyzing and comparing, the stone powder produced by the production mechanism sand is different from the mud powder in the river sand, and the muddy powder has an adverse effect on the workability, volumetric stability and durability of the concrete, but the fine particles in the machine sand are Called stone powder, stone powder and the chemical composition of the mother rock exactly the same, the impact on the performance of concrete is beneficial and disadvantages. For the control of stone powder quality, we must first ensure the purity, control its mud powder, harmful organic matter content, for this, “building sand” GB / T 14684-2001 using MB value to limit; second, stone powder can not contain A substance that reacts with the base in the cement. In the national standard GB / T 14684-2001, according to the strength of the soil grade, the stone powder content limits were identified as 3%, 5%, 7%, but whether it is reasonable, but also questionable. The change of the content of stone powder will cause the change of the ratio of cement to powder and pulp ratio, the change of cement and stone powder ratio, and change the rate of sand to a certain extent. Therefore, in order to make good use of stone powder, we must consider several aspects, Make it avoid weaknesses, and the greatest possible use of it. There is no doubt that the amount of stone powder can improve the performance of concrete.
With the rapid development of modern construction projects in China, the promotion and application of commercial concrete has been increasing rapidly. The incorporation of mineral admixtures is of great importance to the workability and late strength of concrete, especially for the durability of concrete structure engineering, from the development of conventional concrete to modern high performance concrete. Grinding slag and fly ash are the most widely used concrete admixtures because of their low cost and abundant resources.

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Processing heavy calcium carbonate powder 200-800 purpose equipment

In recent years, the domestic ultra-fine powder industry by leaps and bounds, ultra-fine powder with the use of the scope of expansion, not only brought the development of powder processing equipment, but also to the rational use of high-quality mineral resources to provide an effective way. Ultra-fine powder of calcium carbonate powder is one of the most widely used powder, and its product variety from the original “Shuangfei powder” (200 mesh), “three fly powder” (325 mesh) to the development of 600 ~ 3250 Different specifications of high-grade ultra-fine tungsten powder, the scope of application more widely.
Early powder processing industry production generally use Raymond grinding process, mostly the production of 400 mesh below the powder, and now in the Raymond Mill on the basis of SBE and R & D to build the following 400-device – European version of the mill, It is Raymond Mill upgrade products, performance, wear parts and other aspects have been improved, and environmental protection and energy conservation. If the production of 600-1250 purpose fine powder can be used to build SBE HGM ring roller micro-grinding, the production of fineness of up to 3250 mesh.
At present, the amount of domestic heavy calcium carbonate increased significantly, has exceeded the amount of kaolin and light calcium. Advanced powder processing equipment and technology makes the quality of heavy calcium carbonate products greatly improved, therefore, the production of ultra-fine heavy calcium carbonate has a good development prospects, and good milling equipment ultra-fine milling machine was born, will To bring new opportunities for the development of the industry, so that the value of calcium carbonate unlimited amplification.

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Limestone crushing equipment

Raymond Mill, European version of the mill, vertical mill, micro-grinding, etc. for hardness of not more than 9.3 of the material grinding, the most suitable for the limestone. European version of the milling machine both European version of the trapezium mill, Raymond Mill is to upgrade products, is to replace Raymond Mill processing powder of a fine mill, finished grain size in the range of 80-400 mesh arbitrary regulation, HGM ring roller micro-grinding and ultra-fine vertical grinding can reach 3250 mesh. SBE can provide limestone from rough to sand and then to a fine powder line equipment.
Limestone is widely used as a trade name for limestone as a mineral raw material. In modern industry, limestone is the main raw material for making cement, lime and calcium carbide. It is an indispensable flux limestone in metallurgical industry. After high-quality limestone grinding, high-quality limestone is widely used in papermaking, rubber, paint, paint, medicine , Cosmetics, feed, sealing, bonding, polishing and other products in the manufacture. According to incomplete statistics, cement production consumes limestone and building stone, lime production, metallurgical flux, superfine calcium carbonate consumption of limestone sum ratio of 1: 3.
Limestone is a non-renewable resource, with the scientific and technological progress and the development of nanotechnology, limestone applications will be further widened. Jaw crusher, impact crusher, sand making machine, crusher more use in the mine, infrastructure and roads, bridges, water and so on. Limestone ultrafine mill (Raymond Mill, European version of the mill, vertical mill, micro-grinding, etc.) for paper, rubber, paint, paint, medicine, cosmetics, feed and so on.

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Superfine talc powder deep processing technology and application areas

Talc is a common silicate mineral, a hydrothermal alteration mineral, which is very soft and has a creamy feel, known as the softest mineral, with a Mohs hardness of 1. Talc is widely used after deep processing, the most common chalk is the use of talc ore through the milling machine produced by the production of talcum powder. The talc ore can also be used after the grinding of refractories, paper, rubber fillers, pesticide absorbents, leather coatings, cosmetic materials and carving materials and so on.
Talc ore can be processed talc has 200 mesh, 325 mesh, 500 mesh, 600 mesh, 800 mesh, 1250 mesh and other specifications. Talc powder processing technology is to extract the talc (talc powder raw materials) to select the fine talc, the bulk material crushed into the mill into the mill by the fineness (15mm-50mm), with Raymond Mill Powder or European version of the mill grinding, in line with the fineness of the powder with the air flow through the pipeline into the dust collector for separation and collection, the collection of finished powder by the outlet from the conveyor to the finished product silo, Packing tanker or automatic baler for packaging.
Talc powder processing The main milling equipment with fine powder processing generally use LM vertical roller mill, MTW European version of the mill, TGM over pressure trapezium mill; ultrafine powder processing generally use LUM ultra-fine vertical mill, HGM Micro-grinding. After grinding the material by the separator for grading, unqualified powder was classified after the separator to return to the host to re-grinding.
At present, according to the national support for environmental protection and energy conservation industry, the rise of the new technology of stone papermaking, the application of talcum powder market gradually, the increasing demand, talc resources mining and processing industry also began to hot up. Talc resources mining and processing is bound to drive the mill equipment market to further develop. The progress of the milling machine equipment is the talc powder industry to better develop the necessary conditions for healthy development.

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The working principle of vertical mill

SBE as China’s most valuable crushing equipment, the overall solution provider, with three decades of grinding equipment research and development experience and advanced domestic and international technical support, production and research and development of milling equipment mainly coarse powder mill, Europe Version of the mill, vertical mill, Raymond Mill, ultra-fine powder mill, and so on. The following focuses on the working principle of vertical mill:
Take the LM vertical mill as an example: The main motor drives the grinding wheel through the reducer, and the wind enters the mill from the air inlet, and the material falls into the center of the disc by the screw feeder. Under the action of centrifugal force, Grinding disc to the edge of the central uniform movement, through the grinding wheel on the grinding roller area, by the roller rolling, large pieces of material directly crushed, the fine material after extrusion by the formation of material bed for grain crushing. The crushed material continues to move toward the edge of the disc until it is removed by the strong airflow at the air ring, and the larger particles are re-dropped onto the disc to continue crushing. The material in the air stream passes through the upper separator, Separate the role of the blade, the coarse particles back to the grinding mill on the grinding, qualified fine powder with the air together with the grinding, the system collector to collect, was collected powder is ultra-fine grinding mill product. Mixed with the material of iron and other debris with the material movement to the edge of the disc, because of its own weight can not be blown by the wind, fell to the bottom of the mill was installed in the bottom of the disc scraping plate scraped into the slag discharge The

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Concrete limestone grinding equipment with what

In recent years, most of the domestic mining and industrial sand field in the production process has produced a lot of limestone powder waste, not only pollute the environment and waste of raw materials is serious, how the limestone powder fertilizer “turning waste into treasure” to find a reasonable The solution is imperative. Practice has proved that the use of limestone powder as a mixed admixture in concrete has improved the structure of concrete, enhance the workability of concrete, improve the impact of concrete at low temperatures on sulfate resistance.
The SBF production of limestone powder milling machine MTW European version of the mill and LUM ultra-fine milling machine, since the equipment since the operation of stable, high yield and low consumption, has served in a number of countries and cities, is your limestone powder Grinding equipment investment ideal choice.
MTW European version of the mill is SBE self-developed fourth-generation mill products, is in the domestic Raymond Mill and tilting mill on the basis of the introduction of the latest European design concepts and standards, with great concentration to develop a leading international technical level, With a number of independent patented technology, the latest grinding equipment. Efficient energy-saving, stand-alone production capacity, easy to scale production, low energy consumption per unit of product, easy to maintain.
LUM ultra-fine grinding mill is a set of ultra-fine grinding, grading, transportation in one of the ultra-fine milling industry professional equipment, its process parameters, mechanical properties and finished product quality and other technical indicators have reached the international advanced level. The machine is mainly used in ultra-fine grinding processing, a finished fineness D97 = 400-1500 mesh (8-38μm), stand-alone production capacity by different models in the 8-18t / h.

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Silicon ore, silicon powder processing technology

Silicon powder is made of natural quartz or fused silica and silicon ore, broken, purified, grinding, grading and other multi-channel processing from the powder. Silica powder with excellent temperature resistance, acid and alkali corrosion, poor thermal conductivity, high insulation, low expansion, chemical stability, hardness and other excellent performance, is widely used in chemical, electronics, integrated circuits (IC), electrical appliances, plastics , Paint, advanced paint, rubber, defense and other fields.
Silica powder application of different areas of different particle size can be divided into paint coatings with silicon powder, epoxy floor with silicon powder, rubber silicon powder, sealant with silicon powder, electronic and electrical grade plastic materials with silicon powder, precision ceramics With silicon powder and so on. Silica powder production of raw materials in China is rich in content, crystal, translucent and milky white veins quartz, metamorphic quartzite, sedimentary quartz sandstone, powder quartz and other types. In order to meet the requirements of raw materials for silicon powder, some types of siliceous materials must be refined to meet the quality standards, can be used to process silicon powder.
Silicon powder processing and purification process Silica raw materials through crushing, screening, grinding, so that silica and impurities fully dissociated. In the actual production, according to the required quality of purification. Or after flotation, magnetic separation impurities, or by washing the water level in addition to impurities, or after acid washing impurities, dry, as the raw material of silicon powder.
In the production of silicon powder in the main equipment are crusher, ultra-fine milling machine, powder classifier and dryer. Crusher is mainly used to break large pieces of raw materials, the production of fine powder equipment mainly the use of ultra-fine milling machine, which includes Raymond Mill, the European version of the mill, vertical milling machine and ring roller powder milling machine, generally based on Application fineness Select milling equipment, which can produce 80-2500 mesh silicon powder.

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Advantages of Medium Speed ​​Pulverizer in Boiler Pulverized Coal Preparation

Pulverized coal boiler has become environmentally friendly and efficient industrial thermal equipment, and the use of the fineness of the fuel-related, the more appropriate coal fineness, the more rapid combustion, the less complete combustion loss of the boiler, the higher the boiler efficiency, The better the value. Therefore, to improve the operating efficiency of pulverized coal boilers, from the fineness of coal to proceed, the use of high-performance medium-speed coal mill for coal grinding.
In the pulverized coal preparation equipment, LM series of medium speed mill pulverizer is widely used. LM series of medium-speed mill is SBE in the extensive use of advanced technology at home and abroad on the basis of the combination of years of experience in a variety of mill production, design and development of advanced grinding equipment. Is a set of broken, dry, grinding, grading, transportation in one of the ideal equipment for the milling industry, for the preparation of pulverized coal products can meet the fineness of industry and national standards.
The advantage of using SBE’s medium speed mill to produce pulverized coal:
1, large pulverized coal production: by hydraulic pressurization can increase the size of the grinding force, thereby increasing production and improve milling efficiency, relative to the traditional coal mill in terms of higher efficiency. SBE medium speed mill, the production capacity of 10-100t / h optional, fully meet the needs of large coal preparation project.
2, coal adaptability: hydraulic load, accumulator buffer; grinding drying, grinding high water coal.
3, milling energy consumption is low: the use of roller in the grinding disc directly grinding grinding material grinding method, low energy consumption, compared with the ball mill system to save energy consumption 30% to 40%.
4, drying capacity: the internal hot air directly with the material contact, drying capacity, can save a dryer, saving land area, saving energy, and by adjusting the hot air temperature, can easily deal with different humidity materials.
Of course, in the process of preparation of pulverized coal, in addition to the main equipment of the mill, but also the need for auxiliary equipment to ensure that the particles of coal particles, fineness, purity in line with national standards, such as explosion-proof devices, fire extinguishing devices, Conveyor, feeder, pulse dust collector and so on.

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