High strength gypsum production method

Abstract

The present invention discloses a high strength gypsum production method, which comprises: crushing a gypsum raw material, grinding into gypsum powder with a particle size of 50-100 [mu]m, conveying the grinded gypsum powder into a mixing tank through conveying equipment to prepare a gypsum slurry with a concentration of 1200-1500 g / cm<2>, heating the gypsum slurry to a temperature of 30-100 DEG C through a heat conduction oil heating system, transferring the uniformly-mixed gypsum slurry into a crystal transition device through a high pressure slurry pump, carrying out further dilution, concurrently adding a crystal transition agent, carrying out primary crystallization, transferring the obtained gypsum crystal into the follow-up crystallization device, carrying out secondary crystallization, conveying the obtained gypsum slurry into a centrifuge separator to separate, introducing hot wind with a temperature of 40-160 DEG C into the centrifuge separator during the separating, placing the separated wet gypsum crystal into a dryer to further dry, and conveying into a material tank through the convey equipment, wherein the generated gypsum crystal has characteristics of high purity, strong mechanical property, high drying performance and high compressive strength.

Description

[0001] technical field

[0002] The invention belongs to the technical field of gypsum, and in particular relates to a production method of high-strength gypsum.

[0003] Background technique

[0004] As a high-quality cementing material, high-strength gypsum powder is widely used in ceramics, precision casting, medical, aviation, shipbuilding, automobiles, plastics, architectural art, and arts and crafts to make various molds and models. The superiority of its own performance is favored, and the social demand is very large. With the rapid development of the economy in recent years, the demand is constantly increasing, and the quality and performance requirements for gypsum are getting higher and higher. requirements.

[0005] Contents of the invention

[0006] In order to overcome the above-mentioned technical problems in the prior art, the object of the present invention is to provide a production method of high-strength gypsum, which is simple, suitable for mass pro...