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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The process of plaster equipment can be summarized as follows: plaster ore → vibrating feeder → jaw crusher → bucket elevator → raw material warehouse → grinding machine → bucket elevator → fluidized bed furnace → bucket elevator → conveyor → clinker warehouse cooling, storage → finished product. The grinding process is particularly crucial.
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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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The process of plaster equipment can be summarized as follows: plaster ore → vibrating feeder → jaw crusher → bucket elevator → raw material warehouse → grinding machine → bucket elevator → fluidized bed furnace → bucket elevator → conveyor → clinker warehouse cooling, storage → finished product. The grinding process is particularly crucial.
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Process and tools selectionAccording to the procedure requirements, the building plaster tools is generally divided into 5 parts, particularly the crushing system, grinding system, calcination system, storage and transportation system, and electrical manage system.Material transportation:The overwhelmed plaster uncooked fabric is transported by way of a hoist to a storage bin for backup.
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Process and equipment selectionAccording to the process requirements, the construction plaster equipment is usually divided into five parts, namely the crushing system, grinding system, calcination system, storage and transportation system, and electrical control system. Material transportation:The crushed plaster raw material is transported by a hoist to a storage bin for backup. The storage bin is designed according to the requirements for material storage time to ensure a stable supply of materials.
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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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1. Jaw crusherThe feed particle dimension of the jaw crusher is ≤ 1200mm, the discharge particle dimension is 10-350mm, and the manufacturing ability can attain 1-1000t/h. Suitable for coarse crushing of giant blocks of Plaster, with robust crushing potential and excessive crushing ratio.2. Impact crusherThe feed particle measurement of the influence crusher is ≤ 1300mm, with a manufacturing ability of 30-2000t/h.
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1. Jaw crusherThe feed particle dimension of the jaw crusher is ≤ 1200mm, the discharge particle dimension is 10-350mm, and the manufacturing potential can attain 1-1000t/h. Suitable for coarse crushing of giant blocks of Plaster, with robust crushing potential and excessive crushing ratio.2. Impact crusherThe feed particle dimension of the have an effect on crusher is ≤ 1300mm, with a manufacturing potential of 30-2000t/h.
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Based on over 20 years of research and development experience in plaster making equipment, Liming Heavy Industry Technology has developed a patented technology for the production of high yield and high energy plaster powder. This technology is a dry production method that achieves self grinding and self selection. Through a frequency conversion high-speed powder separator, plaster can be directly ground to meet the GB/T9776-2008 standard for building plaster, without the need for external screening or sorting.
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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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Based on over 20 years of lookup and improvement journey in plaster making equipment, Liming Heavy Industry Technology has developed a patented technological know-how for the manufacturing of excessive yield and excessive power plaster powder. This science is a dry manufacturing technique that achieves self grinding and self selection.
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1. Jaw crusherThe feed particle size of the jaw crusher is ≤ 1200mm, the discharge particle size is 10-350mm, and the production capacity can reach 1-1000t/h. Suitable for coarse crushing of large blocks of Plaster, with strong crushing ability and high crushing ratio.2. Impact crusherThe feed particle size of the impact crusher is ≤ 1300mm, with a production capacity of 30-2000t/h. It is suitable for medium to fine crushing of Plaster with low hardness and Mohs hardness level 2, and the discharge particle shape is good and the particle size is uniform.3.
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Technical indicators of plaster powder products1. Product quality: Meet or exceed the requirements of the national "Building Plaster" standard (GB9776-2008).2. Fineness: 80-200 mesh, with a residue of 10%.3. Bending strength (directly related to raw materials): ≥ 1.6Mpa; Compressive strength: ≥ 3.0Mpa.4. Main phase composition: Content of hemihydrate plaster: ≥ 80% adjustableContent of plaster dihydrate:<5% adjustableSoluble anhydrous plaster content:<5% adjustable5. Initial setting time: 3-8 minutes adjustable; Final setting time: 6-15 minutes adjustable.6.
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During the crushing stage of the Plaster powder manufacturing process, the measurement and specs of the extracted Plaster ore vary. According to the real situation, appropriate crushing gear is chosen for preliminary crushing treatment, and particles with a particle measurement of no extra than 35mm are crushed. 1.
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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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During the crushing stage of the Plaster powder manufacturing process, the measurement and specs of the extracted Plaster ore vary. According to the authentic situation, appropriate crushing gear is chosen for preliminary crushing treatment, and particles with a particle measurement of no extra than 35mm are crushed. 1.
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The gypsum powder calcination area can be divided into the following processes according to the transportation process of gypsum powder: gypsum raw material storage yard, grinding&drying, calcination, cooling, grinding, and storage. Before calcination, gypsum is mainly composed of dihydrate gypsum, and calcination is the process of converting dihydrate gypsum into hemihydrate gypsum. The calcined gypsum is mainly composed of hemihydrate gypsum.The dry addition area includes gypsum powder, starch, coagulants, retarders, refractory materials, cement, etc.
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We have extremely high professional degrees in mixing systems. The accumulation of more than ten years of experience in product innovation and application research and development enables us to deal with the mixed problems of our customers. Core mixing products include: double spiral cone mixer, horizontal belt mixer, horizontal plow mixer and Forberg mixer. With complete product variety and specifications, customers can choose the most suitable machine according to production capacity, environment and process.
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Gypsum board produce Process flow:Gypsum in the fabric yard - Calcination - Abrasives - Cooling storage - Clinker dimension - Mixing (water, dry cloth additives, moist fabric additives) - Forming (protective paper) - Forming (adhesive edge) - Solidification - Cutting - Drying - Screening - Sawing area - Sealing area - StackingAnnual capacity/M2Day capacity(sheet)1200×2400×9mmDrier layerControl system2Million23004PLC4Million46006PLC6Million69008 DCS1.
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During the crushing stage of the Plaster powder production process, the size and specifications of the extracted Plaster ore vary. According to the actual situation, suitable crushing equipment is selected for preliminary crushing treatment, and particles with a particle size of no more than 35mm are crushed. 1. Jaw crusher: The feed particle size of the jaw crusher is ≤ 1200mm, the discharge particle size is 10350mm, and the production capacity can reach 11000t/h.
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Wall Plaster Machine Process flowThe powder determination laptop sends the Plaster uncooked powder that has reached the required fineness after grinding to the fluidized mattress furnace for calcination, and the relaxation is back to the mill for in addition grinding till it is qualified.
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