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Environment-friendly type alumyte integrated smelting technology

A technical solution, an environmentally friendly technology, applied in chemical instruments and methods, solid separation, magnetic separation, etc., can solve the problems of reduced extraction rate, inability to remove quartz stone, increased smelting cost, etc., and achieve improved resource utilization and high efficiency. The effect of comprehensive development and utilization

Inactive Publication Date: 2007-07-11
周耀瑜
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Problems solved by technology

But this only removes the soluble kaolinite in bauxite, but cannot remove the insoluble quartz stone in bauxite, SiO 2 The removal rate is low
Secondly, since the mother liquor contains Na 2 O·Al 2 o 3 , SiO 2 During the dissolution process, Na 2 O·Al 2 o 3 1.7SiO2 2 ·H 2 O (hydrated sodium aluminosilicate) is precipitated, which inevitably causes Na 2 O and Al 2 o 3 The loss increases the cost of smelting, Al 2 o 3 The extraction rate is reduced
Especially bauxite ore with high iron content, after refining Al 2 o 3 Afterwards, the tailings mud—Fe in red mud 2 o 3 The content is usually as high as 35-50%, or even higher, and directly discarding the tailings mud—red mud will inevitably cause waste of resources and environmental pollution.
Due to the complex composition of red mud, it is very difficult to carry out secondary comprehensive development and utilization of red mud, and the production cost is high, so it loses its economic significance

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  • Environment-friendly type alumyte integrated smelting technology

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Embodiment Construction

[0011] The technical solution of the present invention has its specificity, complexity and advantages compared with the various disclosed Bayer dissolution technical solutions at present. If the existing equipment technology is still used to implement the technology of the present invention, not only the equipment investment is huge, but also the energy consumption will increase greatly. Therefore, it is not worth the candle. However, if the high-temperature bauxite powder after high-temperature desulfurization and iron reduction is considered to be used as the heat source material for Bayer dissolution of bauxite powder in the implementation of the technical solution of the present invention, and the desiliconization, Bayer dissolution and concentration treatment of circulating mother liquor, etc. The link adopts the "reciprocal nesting, spiral linear passage and pipeline energy conversion production technology" invented by myself to implement the scheme of the present inventi...

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Abstract

The invention discloses an environment-protective synthetic smelting method of boehmite-trihydrate diaspore ore with high-silicon, ferric and sulfur content, which is characterized by the following: removing silicon; proceeding Baeyer stripping disposal without consuming Na2O and Al2O3; recycling Na2O .H2O infinitely; separating calcium silicate, alumina, gallium and iron concentrate powder and calcium titanate from beauxite once; improving utilizing rate of resource.

Description

Technical field [0001] The invention provides an environment-friendly new technological solution suitable for comprehensive smelting of monohydric and trihydric bauxite ores with high silicon, iron and sulfur contents. Utilize the technical scheme of the present invention, in the smelting process, desiliconization and Bayer dissolution treatment can realize Na 2 O and Al 2 o 3 "Zero" loss, Na 2 O·H 2 OInfinite recycling, and one-time separation of bauxite with high silicon, iron, and sulfur content into calcium silicate, alumina, gallium, iron concentrate powder, calcium titanate, etc., to achieve efficient synthesis of bauxite resources Development and utilization, no waste tailings, so that the utilization rate of resources is fully improved. Background technique [0002] At present, there are mainly two basic and practical methods for industrial smelting of bauxite at home and abroad, namely the Bayer method and the sintering method, of which the Bayer method is the ...

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Application Information

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IPC IPC(8): C22B1/00C22B1/11C21B13/00C22B5/12C22B5/10C22B21/00C22B3/44C22B3/22B03C1/02
CPCY02P10/20
Inventor 周耀瑜
Owner 周耀瑜
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