A production device and method for enhanced salt removal and desulfurization of high-sulfur seed separation mother liquor

Abstract

The invention discloses a high-sulfur spent liquor reinforced salt elimination and desulfurization production device. An inlet of a static mixer (1) is connected with a spent liquor pipeline and an oxidant pipeline. The oxidant pipeline is from an oxidant pump (3) and an oxidant storage tank (2) connected with the oxidant pump (3). An outlet of the static mixer (1) is connected with original normal production process equipment. A causticized liquor pipeline of the original normal production process equipment is connected with a desulfurizer pipeline and a reaction tank (6). The desulfurizer pipeline is from an electric stove (5) and a solid mixing machine (4) connected with the electric stove (5). The reaction tank (6) is connected with a slurry pump (7) which is connected with a settling tank (8). An underflow outlet of the settling tank (8) is connected with a filtering machine (10) through an underflow pump (9). An overflowing pipeline of the settling tank (8) and a filtrate pipeline of the filtering machine (10) are connected with a mixed liquor tank (11) which is connected with a circulation mother liquor storage tank of a production system through a mixed liquor pump (12).

Description

technical field [0001] The invention relates to a device and method for producing alumina by Bayer process using high-sulfur bauxite and other high-sulfur alumina minerals or tailings, in particular to a device for enhancing salt discharge and desulfurization production of mother liquor separated by high-sulfur species and methods. Background technique [0002] Due to the substantial increase in domestic alumina production, the demand for bauxite has increased sharply, and the bottleneck of bauxite resources has intensified. In view of the current trend of decreasing high-grade bauxite reserves and decreasing supply grade, it is necessary to accelerate the development and improvement of other types of bauxite utilization technologies, expand the available resources of bauxite, and improve resource utilization. [0003] my country's bauxite resources are rich in reserves, with proven reserves reaching 2.3 billion tons, of which the reserves of diaspore high-sulfur bauxite ar...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high-sulfur seed separation mother liquor enhanced salt removal and desulfurization production device and method, which removes the sulfur brought in by high-sulfur bauxite during the wet process, to overcome the existing technical problems High cost, complex process, or unsatisfactory desulfurization effect

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