Gypsum board production process

Into the waterpower pulp machine to form a pulp raw material, then pump into the slurry storage tank standby; Foaming agent and water in proportion to inputs foaming agent preparation tank and pump into the foaming agent reserve tank (with a heating device, to keep more than 35 ℃) standby; Coagulant and gypsum plasterboard production flow ingredients parts: preparation, modified starch, retarded machine, paper pulp, water reducing agent, water after quantitative measurement put the raw material is entered into the bunker promotion conveying equipment spare; Ingredients: a jar of pulp slurry reserves the use of metering pump pump into the mixer, foam foaming agent using dynamic foaming device into a blender, coagulant and gypsum powder using automatic measurement weigh belt into the blender, then all the main auxiliary materials in a blender mixed into a qualified gypsum slurry. Description: all main accessories add consists in the automatic control system, with the different rates of production line automatic adjustment, to adapt to the requirement of large-scale, high speed molding conveying part of paper by automatic correction after uncoiling machine into the machine, the paper by the automatic correction after uncoiling machine, indentation machine, vibration platform into the forming machine, mixer, slurry was in vibration platform under a piece of paper into the machine, extrusion on the forming machine requirements specifications of the gypsum board, and then in the solidification on to complete the initial setting, the roller conveyer belt to complete the final set, after a fixed-length cutting machine cut into required length (2400 mm, 3000 mm, or other), the 1 # and transverse steering, steering after two plasterboard leave 1 # transverse machine at the same time, and then use the close roller made of two pieces of plate spacing requirements, by distributing the machine into the dryer drying part adopts the fuel type dry heat conduction oil furnace as heat source, hot oil after finned heat exchanger in hot air by the fan into the drying machine internal drying task,This dryer is divided into two areas, can be a very good finish plasterboard dry drying curve, to avoid defects such as burn, don't do it. The process of environmental protection, energy saving, high thermal efficiency, process parameters is easy to control. Part 2 # transverse dryer after drying task, via the machine into 2 # transverse system, complete the plasterboard fixed-length cutting, automatic package edge, then after finished product conveyor into automatic stacker stacking, stacking is completed using forklift inspection packaging to the packaging area, a full set of production process is complete. The product description 1. On paper frame: protective paper on the rack body running 2 to molding. Automatic correction machine: ensure protective paper running deviation in 3. Automatic imprinting machine, indentation on the protective paper ensure nice 4 type gypsum board edge. Starch agitation tank, starch and water board evenly to supply pulper as binding material of plasterboard, 5. Foaming agent agitation tank: mix foaming agent against the diluted water evenly to the pulper to reduce the weight of the plasterboard to increase toughness 6. Steady bin discharger: gypsum powder from steady uniform bin to measure dragon 7. Measuring dragon: the gypsum powder by measuring to the pulper ensure uniform slurry of 8. Beater: gypsum powder and water starch, foaming agent and other auxiliary materials to form a gypsum oar spread evenly onto the protective paper 9. Plate forming machine: plasterboard produced through extrusion roll forming production of gypsum board face than the original type of flatness and edge quality much better molding belt conveyor: plasterboard, coagulation in 11 early on the belt. Automatic machine: at the beginning of the plasterboard to cut into 12. 1 # transverse: plasterboard semi-finished products through the 1 # transverse translation after turning 13 to drying machine. The close type distributor: plasterboard continuously 14 each layer to the drying machine. Dryer: plasterboard drying 15 inside. Out of the machine: the dry good gypsum board from the dryer continuously carry out 16. 2 # transverse: the dry good plasterboard through close to the saw machine translation 17. Sawing machine: cut the plasterboard in fine scale 18. Translation: after sawing plate length after cutting translation preparation for automatic sealing side is 19. Affix the trademark automatic edge banding and palletizing machine: then put plasterboard code into a pile with forklift shovel go gypsum powder, gypsum powder, gypsum powder is one of the five gel material, occupies an important position in national economy, it is widely used in construction, building materials, industrial molds and art model, chemical industry and agriculture, food processing and medical hairdressing, and many other applications, is a kind of important industrial raw materials. [editor this paragraph] classification of gypsum plaster powder according to the different physical components can be divided into: phosphorus gypsum powder, desulfurization gypsum powder, citric acid gypsum powder and fluorine gypsum powder, etc. Gypsum powder according to the different color can be divided into: red gypsum powder, yellow gypsum powder, green gypsum powder, green gypsum powder, white cream powder, gypsum powder blueColor gypsum powder, etc. Gypsum powder according to the physical features of the different can be divided into: dolomitic gypsum, clay, gypsum powder, gypsum powder chlorite, alabaster powder, talc gypsum powder, containing sandy gypsum powder and fiber gypsum powder, etc. Gypsum powder according to use can be divided into: building materials, chemical industry with gesso, with gesso mould with gypsum powder, food with gypsum powder and casting in plaster powder, etc. Gypsum application has a long history, but simply to early chalk, do be bored with child, do simple handicraft, tofu and lack of in-depth research and development, and therefore did not arouse people's attention. In the late 1970 s, especially since reform and opening in China, with the rapid development of economy, a large amount of consumption of gypsum construction, building materials and other related industrial demand for gypsum has increased dramatically, gypsum has attracted more and more attention, has formed a huge industry. My country is rich in natural gypsum mineral resources reserves total reserves of nearly 60 billion tons, the world's first, is also the chemical gypsum manufacturer, every year there are a large number of chemical gypsum generation: phosphorus gypsum only every year close to 20 million tons, as many as part of the phosphate fertilizer plant phosphorus gypsum accumulation amount up to tens of millions of tons, especially with the rapid development of our economy and to the attention of the environmental protection in recent years, power plant desulfurization has been the process, power plants must have a lot of desulfurization gypsum, in addition to citric acid gypsum, fluorine gypsum, salt and other chemical gypsum, relying on the abundant natural and human resources to carry out the comprehensive utilization of gypsum industry, the development and construction of circular economy needs, but also the new highlight of many investors. In recent years, with the development of gypsum products, a variety of different USES gesso also successively promoted, especially in the building materials industry, with the increasing of high-rise building and the national wall change work progressed, gesso building materials market has become a tight product. 2005 national gypsum powder dosage is about 120 million tons, the production of 85 million tons, the shortfall of 35 million tons, far cannot satisfy the market demand, so the processing and the development of the project has a large market, and high profits, economic benefit is good. The gypsum powder production process and production line automation level is not high, mostly in manual operation or half automation, gypsum powder product quality has long been at a low level, low quality. Our powder using vertical mill, fluidized bed and other advanced equipment and the whole production line adopts the DCS automatic control system,Automate the real production technology. To produce a product of good quality, superior performance, by market favour. [editor this paragraph] building Gypsum powder production line project production process (raw materials: natural Gypsum ore, desulfurization Gypsum, phosphogypsum) project process is divided into four steps: (1) the broken link (2) pre grinding link (3) calcined link (4) the loading transmission link chemical Gypsum, Gypsum Ca [SO4]. 2 H2O crystal chemistry: theory of % (wB) : CaO 32.5, 46.6, SO3 H2O + 20.9. Composition changed little. Always have machinery foreign substance such as clay and organic matter. Sometimes containing SiO2, Al2O3, Fe2O3, MgO style, Na2O, CO2, Cl and other impurities. Structure and morphology: monoclinic system, a0 = 0.568 nm, b0 = 1.518 nm, c0 = 0.629 nm, beta = 118? 23 '; Z = 4. Crystal structure by (SO4) 2 - tetrahedron and Ca2 + unites into lots (010) double, double room with H2O molecule. Its complete cleavage that occur along this direction. Ca2 + coordination number is 8, and the adjacent 4 [SO4] tetrahedron 6 O2 - and 2 H2O molecule. H2O molecules with [SO4] in O2 - associated by hydrogen bonding, associated with molecular bonds between water molecules. The rhombic prism crystal class, C2h - 2 / m (L2PC). Crystal often according to develop into a plate, there is also a granular. Often simple shape: parallel double b, p, rhombic prism m, l, etc.; Crystal and often with longitudinal stripes; Sometimes a lenticular. Twin common, one is in accordance with the (100) for Gary twin or double crystal dovetail twin, another is double (101) crystal plane of twin or arrow twinning in Paris. Collection is more dense granular or fibrous. The massive called alabaster fine grain; Fibrous collection called fiber gypsum. Rare formed by lenticular crystals like roses aggregate. Also have earthy, flake. The physical and chemical properties, usually white, colorless, colorless transparent crystal called selenite, sometimes because it contains impurities and become grey, yellow, pale brown, etc. Streaks of white. Transparent. Vitreous luster, cleavage plane pearl luster, fibrous assembly silk luster. Cleavage is extremely completely, and moderate, cleavage crack into plane Angle for 66 and 114 of the diamond. Crispy. Hardness is 1.5 ~ 2. A slight change of different directions. Relative density 2.3. Under polarizer: colorless. Biaxial crystal (+). 2 v = 58. Ng = 1.530 Nm = 1.523, Np = 1.521. With the temperature rise of 2 v, at about 90 ℃ 2 v is zero. Heating exist three discharge water of crystallization stages: 105 ~ 180 ℃, first get rid of a water molecule, then immediately out half of the water molecules, into a plaster Ca (SO4)? 0.5 H2O, also known as plaster of Paris or half water gypsum. From 200 ~ 220 ℃, the remaining half of the water molecules, type into Ⅲ anhydrite Ca (SO4)? Epsilon H2O (0.06 < epsilon < 0.11). About 350 ℃, type into Ⅱ gypsum Ca (SO4). 112