Acidolysis pre-mixing system for reducing formation of solid phase by mineral powder and concentrated sulfuric acid

Abstract

The invention discloses an acidolysis pre-mixing system for reducing formation of a solid phase by mineral powder and concentrated sulfuric acid. The system comprises a pre-mixing tank, a stirring mechanism, a bottom valve and a sulfuric acid main pipeline, wherein the stirring mechanism is arranged inside the pre-mixing tank, the bottom valve is arranged at the bottom of the pre-mixing tank, one end of the sulfuric acid main pipeline is communicated with an outer sulfuric acid source while the other end is communicated with the pre-mixing tank; the pre-mixing tank is provided with a spray pipeline which is communicated with the sulfuric acid main pipeline in a matched mode, and the spray pipeline is provided with spray holes for washing the inner wall of the pre-mixing tank in a matched mode. The inner wall of the pre-mixing tank can be automatically cleaned by virtue of the spray pipeline to reduce formation of the solid phase so as to prevent the solid phase from falling into the bottom of the pre-mixing tank irregularly to block a discharge valve at the bottom, thereby ensuring normal operation of the production and preparation process. Meanwhile, the labor intensity of the workers is alleviated and the safety of the workers is guaranteed.

Description

technical field [0001] The invention belongs to the field of sulfuric acid titanium dioxide industry, and in particular relates to an acidolysis premixing system for reducing the formation of solid phases from ore powder and concentrated sulfuric acid. Background technique [0002] At present, there are two processes for industrial production of titanium dioxide, the chloride method and the sulfuric acid method. The technology of the chlorination method is quite complicated, and it has high requirements on equipment materials and automatic control levels. At present, only a few countries have mastered this technology. There are several methods of acid hydrolysis feeding operation in the sulfuric acid method: (1) first add the measured concentrated sulfuric acid to the acid hydrolysis chamber, add mineral powder under the stirring of compressed air, and start to cause the reaction after stirring evenly (2) After adding the measured concentrated sulfuric acid into the acid hy...

AI Technical Summary

Problems solved by technology

The working environment of manual cleaning is harsh, the labor intensity of the staff is high, and there are great potential safety hazards

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