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If the flue gas desulfurization gypsum and coal powder from power plants are not treated in a timely and reasonable manner, a large area of land will be utilized, and even unnecessary secondary pollution will be brought to the environment. Desulfurization gypsum from power plants has the characteristics of high taste and small particles. However, with the widespread application of gypsum method and limestone/wet lime in thermal power plants in China, the production of desulfurization gypsum has rapidly increased due to its by-products.
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Each nozzle is equipped with multiple air outlets, which can freely adjust different wind directions of each nozzle, so that the moisture content error of the same gypsum board in different parts does not exceed 1%Forced dehumidification by fan is conducive to the drying of gypsum board.When adjusting the temperature of the dryer, the cooling and heating adjustment reaction is rapid.The hot blast stove automatically adjusts the coal feeding amount according to the flue gas temperature, with high thermal efficiency.
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This method is still widely used in the domestic ceramic industry.Pressure steaming method for frying pasteThis method first preheats the raw Plaster with a block size of 25-50mm after coarse crushing in hot air at 60 ℃, and then places it in a pressure cooker for 5-7 hours with saturated superheated steam at 1,3 atmospheric pressure (125 ℃). Then, hot dry gas at 200 ℃ is introduced until hot dry gas is discharged, resulting in a vapor pressure of hemihydrate Plaster.
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A fluidized bed boiler is a rectangular vessel with a porous gas distribution plate at the bottom. There is a vertical partition inside the furnace, which divides the furnace into two parts, and there are a number of heating tubes inside. At the top of the furnace is a bellows connected to the furnace.The powder is filled into the furnace regularly, and the air is blown into the bottom of the furnace through the air distribution plate to realize the fluidization of the powder.
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Annual capacity/M2Day capacity(sheet)1200×2400×9mmDrier layerControl system2Million23004PLC4Million46006PLC6Million69008 DCS1. Preparation of clinker: The primary uncooked cloth is desulfurization gypsum, with the essential factor being CaSO4.2H2O, which can be bought after kiln conversion β Type semi hydrated gypsum is constructing gypsum.2.
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According to customer needsMATERIALPlaster, chalk, clay, slurry and filter cake.APPLICATIONHeating Plant of limestone desulfurization project, stone powder maker for high-grade highways, coal grinding mill in environmental protection type boiler plant, the mill in mining firms.Introduction of raw materials of Automatic plaster machineThe Plaster ores are crushed into small granules of the size less than 30mm, conveyed to mills to complete selecting and separating, and then the qualified powder are delivered into fluidized bed boiler for calcinations while the rest return to the mill.
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Plastering Equipment is to grind natural dihydrate Plaster ore (raw Plaster) or industrial by-product Plaster (desulfurization Plaster, phosphoPlaster, etc.) through a dedicated grinding machine and heat and calcine it at a certain temperature to dehydrate and decompose the dihydrate Plaster, resulting in β The product with hemihydrate Plaster (CaSO4.1/2H2O) as the main component is building Plaster (commonly known as Plaster). In summary, there are several main Plastering Equipment processes for Plaster powder:(1) Calcine Plaster blocks and then crush them.This method first places Plaste
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Add foaming agent to the storage tank. When in use, the foaming agent and moisture are respectively sent to the foaming device by the metering pump, and compressed air is introduced to produce stable foam, which is sent to the vertical mixer.After the adhesive is prepared in the tank, it is fed into the spray ports on both sides of the forming station, and the adhesive tape is sprayed onto both sides of the paper gypsum board.
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After being cut into the required length by a fixed length cutting machine, it is turned by a horizontal machine, After turning, the two gypsum boards leave the horizontal machine at the same time, and then use a close roller to ensure that the spacing between the two boards meets the requirements, and then enter the dryer for drying through the distribution machine.Gypsum board equipment Drying sectionUsing a boiler to provide steam as a heat source, the steam is exchanged for hot air through a heat exchanger and then sent to the inside of a truffle dryer to complete the drying task.
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After 20 years of development, China's per capita occupancy of 93 years is 0.02m2/ person year, this figure is only 1/500 of the United States, 1/200 of Japan, 1/125 of European countries, and the level of developed countries is very large, enough to show that China's paper gypsum board market potential is huge.According to the 1995 China Statistical Yearbook, the total completed urban area (excluding rural areas, collectives and individuals) in 1994 was 395.16 million square meters, and it is conservatively estimated that it will remain at 395 million square meters every year until 20
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Phosphogypsum is a by-product of ammonium phosphate production in phosphate fertilizer enterprises, mainly containing impurities such as fluoride, phosphorus pentoxide, and organic matter. It is highly acidic and has a pH value as low as 1.9. Research has shown that these harmful impurities are important factors leading to low comprehensive utilization rate of phosphogypsum.
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In order to reach the above requirement, our company have researched and developed a whole set of boiling furnace processing technology, the main material is good-quality steel. For example, heat conductive oil pipe adopts seamless steel pipe (GB3087-82). Steel plate adopts carbon steel and low-alloy steel (GB713-86) ; Frame steel adopts international product .Furthermore , in the work of welding , all the workers have work certificate , after welding , the coil pipe will have a water pressure test , just in case of leakage of heat conductive oil .
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With the rapid development of China's economy, paper gypsum board as a new building materials light board in the main product, in the building decoration industry has been rapidly promoted and applied, the current domestic demand for supply situation, many enterprises are also actively planning to use domestic or the introduction of foreign advanced technology and equipment investment in the construction of gypsum board projects.
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The finished product area can be divided into: dry plate collection section, emergency picking system 1, horizontal transfer of dry plates, dry plate lamination machine, pushing and cutting and trimming machine, emergency picking system 2, edge wrapping machine, storage machine, automatic padding mechanism, and stacking machine according to the process of dry plate transportation. This area also has different layouts and classifications based on the production speed of gypsum boards.
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The face paper is wrapped snugly round every part and sealed to the lower back paper.Cutting the panels By the time the edges have been shaped, the plaster core has set sufficiently for a knife to slice the non-stop strip into popular panel sizes.
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Gypsum that has been overwhelmed and heated to cast off 75% of its water content material is acknowledged as plaster of Paris. When water is delivered to this first-class white powder, the ensuing cloth is without difficulty molded into any favored shape. Upon drying, the reconstituted gypsum regains its rock-like characteristics whilst preserving the favored shape.
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Plasterboard equipment Cutting part: which includes constant size slicing machine, acceleration curler desk and conveyor belt. This section of the gear frequently completes the constant size reducing of gypsum board. The reducing size vary is 2400-6000mm. The slicing desktop adopts servo cutting, and the provider existence and reducing accuracy are extensively improved.
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Add foaming agent to the storage tank. When in use, the foaming agent and moisture are respectively despatched to the foaming machine via the metering pump, and compressed air is delivered to produce secure foam, which is despatched to the vertical mixer.After the adhesive is organized in the tank, it is fed into the spray ports on each aspects of the forming station, and the adhesive tape is sprayed onto each facets of the paper gypsum board.
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1. Gypsum Is Fire-Resistant:Gypsum boards are furnace resistant and guard the shape from hearth threats through stopping the hearth from spreading further. Due to chemically certain water in the gypsum, it possesses a fire-resistant quality. When gypsum boards are uncovered to fire, the water contained inside the gypsum evaporates, forming a defensive layer.2. Thermal Properties of Gypsum:Gypsum can alter variables such as humidity and temperature in the home.
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It is easy maintenance, and detachable good performance. The gypsum block machines consist of preparation system, mixing machine, central hydraulic station, space distance and PLC electric control device.
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Block is building gypsum plaster (plaster or natural chemical byproduct of a calcined gypsum) as the main raw materials: water stirred shaking, pouring into forming massive light and dry wall materials. Its main features are: light weight, shape and tidy and smooth surface, fire, heat insulation, noise and so on.
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Gypsum is the main raw material of gypsumblock, after mixing with water, then pour the slurry into shaper, after drying and then make light of the building gypsum products. You also can add the lightweight aggregate, fiber reinforced materials, foam and other supporting material in the production according to the performance requirements.Gypsum Block Characteristics●Gypsum block with light, precise size●Fireproof, thermal insulation, regulating indoor humidity●Excellent performance of the convenience●It is environmental protection, energy conservation, green prod
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The whole process of gypsum block consists of gypsum powder construction and block preparation. The influence on environment mainly lies in gypsum powder construction. The powder dust, cinder and smoke released by it are very smaller in comparison with other building materials; therefore, it will be enough to take general controlling measure. The gypsum block is solid in opalescent colour. The surface of the block is smooth and plane with straight edges. The grooves and tongues are made on the vertical and horizontal sides for easy construction.
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Capacity/M2Specification /mmShaping Number（piece）/timeShaping time/hourlengthheightthickness100,000 666mm 500mm 80－230mm85－7120,000105－7150,000125－7200,000165－7250,000185－7300,000215－7350,000245－7
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