Gypsum Properties And Milling Process Solution2021-07-19

What Is Gypsum

Gypsum is a monoclinic mineral and is a hydrate whose main chemical component is calcium sulfate (CaSO4). Gypsum is a versatile industrial and building material. Can be used in cement retarder, gypsum construction products, model making, medical food additives, sulfuric acid production, paper fillers, paint fillers, etc.

The micro porous structure and heat dehydration of gypsum and its products make it excellent in sound insulation, heat insulation and fire resistance.

Crystal Structure Of Gypsum

Transformation Of Different Gypsum Phases

(1) FGD gypsum

It is a kind of industrial by-product gypsum generated by SO2 and CaCO3 reaction in flue gas desulfurization of thermal power plant. The main component is CaSO4. 2H2O, which is produced by steps of desulfurization, oxidation, concentration, separation, washing and dehydration of limestone/lime slurry.

(2)PG

It is a by-product of CaSO4. NH2O obtained by reaction of phosphate ore and sulfuric acid in wet process phosphoric acid production.

(3)Characteristics Of Different Gypsum

2. Distribution Of Gypsum

The world's largest producer of gypsum is the United States. In the United States, gypsum deposits are distributed in 22 states and there are 69 mines, the largest being fort dodge, Iowa. Next is Canada; France takes a leading position in European gypsum production; Again for Germany, England, Spain. China is rich in gypsum mines. National 23 provinces (area) have gypsum mine output.

3. Gypsum Process Flow

(1) Calcining before grinding

(2)Grinding before Calcining

4.Gypsum Uses

(1)Medical application

Gypsum has certain antipyretic effect on febrile animals and can be used in the treatment of febrile diseases.

(2)Direct application of raw ore

Mainly used for cement retarder, ceramic mold. Food industry, such as coagulant

(3)Applications in building materials

Mainly is the two water gypsum ore after processing intoα- half water gypsum orβ- half water gypsum, made of all kinds of gypsum products, used in building materials.

(4)Special industries gypsum products

Mainly for gypsum ore has a higher purity requirements, the use of relatively small industrial filler industry.

5.Recommended Cases

Project country: Iraq

Model:2 sets of MTW138

Raw material: Gypsum

Feed size:/

Output size:100 mesh

Capacity:25 tph

Application: Construction

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