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A comprehensive recovery method for multiple valuable minerals in bauxite

A recovery method and bauxite technology, applied in chemical instruments and methods, solid separation, sorting, etc., can solve the problems of complex mineral processing process and high mineral processing cost, and achieve the effect of increasing economic value

Active Publication Date: 2022-03-15
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0023] The above ilmenite purification process is mainly aimed at titanium ore, and the titanium minerals are purified by grading, gravity separation, magnetic separation, electric separation, and flotation processes. The titanium dioxide content in the obtained titanium concentrate is less than 48%. The beneficiation process is complicated and the beneficiation cost is high.

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  • A comprehensive recovery method for multiple valuable minerals in bauxite

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Embodiment 1

[0040] A kind of bauxite, the valuable minerals in the ore are aluminum minerals, zirconium minerals, titanium minerals, and quartz. Among them, ZrO 2 The content is 0.31%, Al 2 o 3 Content is 32.84%, TiO 2 Content is 3.35%, SiO 2 The content is 35.63%, according to figure 1 The flow chart of comprehensive recovery and beneficiation process of multiple valuable minerals in bauxite is shown to comprehensively recover valuable minerals in ore. The specific steps for recovering valuable substances from bauxite are as follows: First, use a color sorting (color sorting particle size is 0.10-50mm, crawler-type color sorter) to obtain color-separated quartz-rich minerals and color-separated quartz-poor minerals; Quartz minerals undergo two magnetic separations (permanent magnet machine and high gradient magnetic separator, magnetic field strength 0.2T and 1.5T) to obtain magnetically separated quartz-rich minerals; magnetically separated quartz-rich minerals undergo chemical ben...

Embodiment 2

[0043] A kind of bauxite, the valuable minerals in the ore are aluminum minerals, zirconium minerals, titanium minerals, and quartz. Among them, ZrO 2 The content is 0.95%, Al 2 o 3 The content is 38.76%, TiO 2 Content is 4.18%, SiO 2 The content is 42.37%, according to figure 1 The flow chart of comprehensive recovery and beneficiation process of multiple valuable minerals in bauxite is shown to comprehensively recover valuable minerals in ore. The specific steps for recovering valuable substances from bauxite are: first use two color sorting (color sorting particle size is 0.15mm ~ 15mm, slide type color sorter and crawler type color sorter) to obtain rich quartz minerals and poor quartz Minerals; color-selected quartz-rich minerals undergo a magnetic separation (high gradient magnetic separator, 0.6T) to obtain magnetic-separated quartz-rich minerals; magnetically-separated quartz-rich minerals undergo chemical beneficiation (phosphoric acid: oxalic acid: 1:2) to obtai...

Embodiment 3

[0046] A kind of bauxite, the valuable minerals in the ore are aluminum minerals, zirconium minerals, titanium minerals, and quartz. Among them, ZrO 2 The content is 0.22%, Al 2 o 3 The content is 52.47%, TiO 2 content of 2.32%, SiO 2 The content is 28.14%, according to figure 1 The flow chart of comprehensive recovery and beneficiation process of multiple valuable minerals in bauxite is shown to comprehensively recover valuable minerals in ore. The specific steps for recovering valuable substances from bauxite are: first use a color sorting (color sorting particle size is 0.15mm ~ 8mm, crawler-type color sorter) to obtain color-separated quartz-rich minerals and quartz-poor minerals; color-separated quartz-rich minerals Minerals undergo a magnetic separation (high gradient magnetic separator, 1.6T) to obtain magnetically separated quartz-rich minerals; magnetically separated quartz-rich minerals undergo chemical beneficiation (nitric acid: oxalic acid is 2:1) to obtain q...

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Abstract

The invention discloses a comprehensive recovery method of multiple valuable minerals in bauxite. The steps are: the bauxite is processed through a color separation process to obtain white translucent minerals and non-white translucent minerals; the white translucent minerals After magnetic separation and chemical beneficiation treatment, high-purity quartz minerals are obtained; non-white light-transmitting minerals are gravity-separated to obtain gravity-selected aluminum-rich minerals and gravity-selected zirconium-rich titanium minerals; aluminum-rich minerals are flotated and desilicated to obtain aluminum concentrates, rich in The zirconium and titanium minerals are magnetically and electrically separated to obtain titanium mineral concentrates and zirconium mineral concentrates suitable for sale as products, and finally achieve comprehensive recovery of quartz minerals, zirconium minerals, aluminum minerals and titanium minerals in bauxite. The invention comprehensively recovers valuable aluminum minerals, quartz, titanium minerals and zirconium minerals in the ore, which can significantly increase the economic value of bauxite. The existing technology only recovers the aluminum minerals in the ores, leaving the quartz minerals and silicon minerals in the ores for storage in the tailings, and does not extract the titanium minerals and zirconium minerals in the ores.

Description

technical field [0001] The invention belongs to the field of mineral processing and relates to a comprehensive recovery method for various valuable minerals in bauxite. Background technique [0002] my country's bauxite reserves are relatively rich, and the proven bauxite reserves have exceeded 5 billion tons, ranking among the top in the world. There are many kinds of minerals in bauxite, usually aluminum minerals are the main ones, and the content of other minerals is low, which has not attracted people's attention, and there are few researches at home and abroad. [0003] A large number of studies have been carried out on desiliconization and upgrading of bauxite beneficiation, which are mainly divided into the following aspects: [0004] (1) A method for desiliconization of bauxite (CN103736600B), providing a short-process technology for desiliconization of bauxite with high efficiency and energy saving, so that the bauxite is firstly removed through selective flocculat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B07C5/342B03C1/30
CPCB03B9/00B07C5/3425B03C1/30
Inventor 郭鑫田应忠吴国亮张建强魏培贺李莎莎马俊伟刘晰张志永刘中原
Owner GUIZHOU BRANCH CHINA ALUMINUM IND