Gypsum is a widely used industrial material and building material. It is a hydrate of calcium sulfate (CaSO4). Natural gypsum is non-toxic, harmless and non-corrosive to the human body. The gypsum powder blended in the construction process is also a natural inorganic material. The pulverizer can obtain environmentally friendly mineral powder by grinding gypsum.
What are the uses of gypsum grinding into powder?
1. Gypsum powder can be used as a gel material. Gypsum powder is known as one of the five major gel materials. In the concrete industry, gypsum powder is used as a Portland cement retarder and is an indispensable additive in the concrete industry.
2. Gypsum powder can be used for building decoration. For example, it is used to build walls and joints. The main component of putty powder for wall leveling is gypsum powder, which is divided into "soft gypsum" and "anhydrite". There is also a colored gypsum powder that can also play a decorative role, and the cost is relatively low.
3. Gypsum powder can be used as the main raw material of concrete expansion agent, anti-cracking agent, self-leveling mortar, and used as composite mineralizer in the production of special cement.
4. Gypsum powder can also be used to produce gypsum building materials, such as plastering gypsum, plastering gypsum, gypsum mortar, plaster of Paris, paper gypsum board, gypsum partition board, fiber gypsum board, building standard bricks, etc.
Gypsum crushing and grinding equipment
1. Jaw Crusher
The jaw crusher is mainly used for coarse crushing of various ore materials, which can crush large pieces of gypsum into small pieces that can enter the mill. Features such as cost economy.
2. Raymond mill
Raymond mill is a relatively advanced grinding equipment, suitable for the processing of various non-flammable and explosive ore materials with Mohs hardness not greater than 9.3 and humidity below 6%. It can grind more than 200 kinds of ore materials. grinding work. The sieving rate is high, the mesh number is fine, and the finished product is in the range of 80-400 mesh. The detail of gypsum powder for construction is about 300 mesh.
Other auxiliary equipment: bucket elevator, powder separator, etc.
Gypsum grinding process
Stage 1: Broken
Large pieces of gypsum material need to be crushed by the jaw crusher to the fineness that can enter the mill.
Stage 2: Grinding
The crushed gypsum small pieces of material are sent to the gypsum particle silo by the bucket elevator, and then evenly sent to the grinding chamber of the gypsum mill by the vibrating feeder for grinding.
Stage 3: Grading
The pulverized material is classified by the powder separator, and the unqualified powder is classified by the powder separator and then returned to the mill for re-grinding.
Stage 4: Calcination
The gypsum raw powder that reaches the required fineness of the product after grinding is sent to the boiling furnace for calcination by the powder separator, and the qualified gypsum powder after calcination is sent to the clinker silo for storage or sent to the product workshop for use.