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Method of flotation removing quartz for alumyte

A bauxite and flotation technology, applied in flotation, solid separation, etc., can solve difficult problems and achieve the effects of low chemical consumption, guarantee requirements, and simple process flow

Active Publication Date: 2011-05-04
GUIZHOU BRANCH CHINA ALUMINUM IND
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Problems solved by technology

[0005] Therefore, neither the positive flotation desilication technology nor the reverse flotation desilication technology developed by China in recent years for bauxite beneficiation can meet and achieve the purpose of removing quartz in bauxite. It is the first time in the world to study the beneficiation of bauxite containing quartz, which is very difficult but of great significance

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  • Method of flotation removing quartz for alumyte
  • Method of flotation removing quartz for alumyte

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Embodiment Construction

[0022] A method for removing quartz by bauxite flotation is based on the particle size distribution characteristics of quartz-containing mineral particles in gibbsite-type bauxite containing boehmite and the physical and chemical properties of each mineral, by selecting The permanent grinding technology enables efficient dissociation of useful minerals such as gibbsite and boehmite and gangue mineral quartz. When the grinding fineness is -0.074mm and accounts for 30% to 100%, the floating The weight percent concentration of the dressing pulp is 5%-28%. When the pH value is 8.5-11, one or more kinds of phosphate or carboxylate-containing salts are used, and the dosage is 100-4000g / t-raw ore regulator , using one or more of amines or their modified products as collectors, when the amount of collectors is 50-1500g / t-raw ore, add a small amount of collectors to the flotation pulp through multiple dispersions To keep the collector concentration of the flotation system at 1×10 -5 -...

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Abstract

The invention relates to a flotation method for removing quartz from the bauxite, which is characterized by milling boehmite-containing gibbsite-type bauxite containing the quartz as impurity mineral, adding regulator and organic amine collector, adjusting the pH value of the ore pulp to 8.5-11.5, performing floatation while maintaining collector concentration in a floating system to obtain floated foams mainly containing quartz, and optionally grading to obtain coarse grains as tailings, wherein aluminum-containing mineral stayed in a floating tank is used as concentrate ore. The inventive method has the advantages of simple process, low cost, good concentrate ore particle size distribution, easy processing for tailings, etc. The method can float quartz impurity in the bauxite to widen economically-utilized bauxite resource; and has good application prospect.

Description

technical field [0001] A method for removing quartz by flotation of bauxite, relating to a flotation method for bauxite, in particular to the separation and removal of boehmite-type low-grade bauxite whose impurity mineral is quartz. Flotation method for removing quartz. Background technique [0002] The Bayer process is the most economical method in the alumina production process, but as the grade of bauxite decreases, the alkali consumption, mine consumption, and energy consumption of the Bayer process for alumina production increase significantly, resulting in significantly worse economic efficiency. When the aluminum-silicon ratio of the bauxite raw material is less than 6, the economics of the Bayer process will be seriously challenged. With the reduction of high-quality bauxite resources, bauxite with a medium and low aluminum-silicon ratio is gradually used in the production of alumina, and the method of washing or beneficiating the ore is used to increase the alumin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02B03D1/01B03B1/00B03B1/04B03D101/02B03D103/04
Inventor 李旺兴陈湘清刘晰马俊伟陈占华胡秋云陈兴华陈志友
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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