Calcination device in alkali preparation process

Abstract

The invention relates to the technical field of chemical alkali preparation, and discloses a calcination device in an alkali preparation process. The device comprises a heat insulation box, a supportcolumn is fixedly installed at the bottom of the heat insulation box, a calcining box is fixedly installed in the heat insulation box, a feeding cylinder is fixedly installed at the bottom of the calcining box, a baffle is movably installed at the bottom of the feeding cylinder, and a discharging port is fixedly installed at the bottom of the feeding cylinder. According to the calcination device in the alkali preparation process, a spiral blade is installed in the calcining box, a material blocking plate is installed at the top of the spiral blade, the spiral blade can transport raw materialsat the bottom of a calcinator to the top of the calcinator under the driving of a driving motor, a spring-shaped heating pipe heated and calcine the materials in the falling process, and the materialsare transported to the upper part of the calcinator by the spiral blade again after the materials fall to the bottom of the calcinator, and the action is repeated, so that compared with an existing alkali-preparation calcination device, the raw materials can be more thoroughly calcined, and the purity of the soda ash product is guaranteed.

Description

technical field [0001] The invention relates to the technical field of chemical soda production, in particular to a calcining equipment in the process of soda production. Background technique [0002] Soda ash (Na2CO3), also known as soda ash, has a molecular weight of 105.99, and the purity of chemicals is more than 99.5% (mass fraction), but the classification belongs to salt, not alkali. It is also called soda or soda ash in international trade. It is an important It is mainly used in the production of flat glass, glass products and ceramic glazes, and is also widely used in domestic washing, acid neutralization and food processing, etc. The manufacture of soda ash generally uses the combined soda making method, also known as Hou's soda making method , its concrete process is: in saturated ammonia brine (ammonia, the solution that sodium chloride all reaches saturation) feeds carbon dioxide so that following reaction takes place: the sodium bicarbonate in the reaction is ...

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Problems solved by technology

[0006] The invention provides a calcination equipment in the process of making alkali, which has the advantages of sufficient calcination of raw materials, effective dust removal and convenient feeding, and solves the problems of insufficient calcination of raw materials, difficult handling of dust and complicated feeding

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