Introduction

Building gypsum powder production line project (raw materials: natural gypsum ore, desulfurized gypsum, phosphogypsum) gypsum powder production process is divided into four steps: crushing, powder making, calcination and storage transportation. Specific process: the raw stone ore is crushed by the crusher and then lifted to the bin by the elevator. Then the material is automatically fed by the electromagnetic vibration feeder. The material enters the chamber. The grinding of the roller and the grinding ring achieves different fineness by adjusting the rotational speed of the analyzer. Because of the different heating conditions, the structure and characteristics of dehydrated gypsum are also different. Dehydrated under normal atmospheric drying conditions resulted in the formation of β hemihydrate gypsum (building gypsum). Selection of gypsum powder mill equipment for processing gypsum powder: YGM high-pressure medium-speed mill and Raymond mill, processing fineness between 15-425 mesh (fineness can be adjusted arbitrarily); HGM three-ring medium-speed ultra-fine mill, processing fineness between 325-2500 mesh (fineness can be adjusted arbitrarily), roughing mill processing fineness less than 1-3 mm.
Gypsum is a widely used industrial material and building material. It can be used in cement retarder, gypsum building products, model making, medical food additives, sulfuric acid production, paper filler, paint filler, etc. The microporous structure and heat dehydration of gypsum and its products make it have excellent sound insulation, heat insulation and fire resistance. Due to different heating temperature and mode, gypsum of different properties can be produced: building gypsum, model gypsum, high strength gypsum, etc. After hardening, the building gypsum has good heat insulation and sound absorption performance and good fire resistance and moisture absorption performance; the color is white, which can be used for indoor painting construction, especially suitable for making all kinds of. White, smooth and delicate decoration, such as adding pigment, can make products have various colors. The model gypsum calcined dihydrate gypsum produced by the ripe gypsum, if the impurity content is small, SKI more fine grinding is called model gypsum. It is faster than building gypsum and has high strength. It is mainly used for making models, sculptures, decorative decorations, etc. H gypsum is placed in a steamed pot and steamed at L.3 atmospheric pressure (124 degrees). A type of semi hydrated gypsum, after grinding is high strength. This gypsum has high density and strength after hardening. High strength gypsum is suitable for plaster engineering, decorative products and plasterboard with high strength requirements. After adding waterproof agent, its products can be used in high humidity environment. It can also be added into organic solution and used as binder.