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Gibbsite type high-iron bauxite source area impurity removal and quality improvement method

A high-iron bauxite and gibbsite-type technology, applied in cement production, grain processing, etc., can solve the problems of high impurities and low comprehensive utilization rate, and achieve low energy consumption, high comprehensive utilization rate and low production cost Effect

Active Publication Date: 2022-01-21
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a method for removing impurities and upgrading the origin of gibbsite-type high-iron bauxite, so as to solve the problems that the current gibbsite-type high-iron bauxite has too many impurities and the comprehensive utilization rate is not high

Method used

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  • Gibbsite type high-iron bauxite source area impurity removal and quality improvement method
  • Gibbsite type high-iron bauxite source area impurity removal and quality improvement method
  • Gibbsite type high-iron bauxite source area impurity removal and quality improvement method

Examples

Experimental program
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Effect test

Embodiment 1

[0066] In this example, the Guinea three-water aluminum stone-type high-speed rail aluminum mine takes from the Boffa mining area, with a mass percentage, including Al 2 O 3 44.90%, SIO 2 1.85%, Fe 2 O 3 25.31%, useful minerals are three-water aluminum stone, and the pulse mineral is mainly aluminum needle iron ore, hematite, kaolinite, rutile, quartz, etc. According to the method of the present invention, the specific steps are as follows, and the specific steps are as follows. figure 1 :

[0067] Dry pre-classification of the rectangular mine in Guinea Boffa aluminum ore ore is obtained by 5 mm, resulting in crude grain-grade aluminum mine and high water-grained aluminum mines, and crude grain-grade aluminum ore jaw crusher And roller crusher is broken to 20 mm or less to perform dry mill (rod mill) to particle size -0.074 mm content of 73.52%, using CGDR dry electromagnetic double roller strong magnetic field magnetic exclusion machine (magnetic field strength) 1.8T) a sweep (m...

Embodiment 2

[0071] In this example, the Guinea three-water aluminum stone-type high-speed aluminum mine is taken from the Didia mining area, with a percentage of mass, including Al 2 O 3 42.45%, SIO 2 2.06%, Fe 2 O 3 28.95%, useful minerals are three-water aluminum stone, and the pulse mineral is mainly aluminum needle iron ore, hematite, kaolinite, rutile, quartz, etc. According to the method of the present invention, the specific steps are as follows, and the specific steps are as follows. figure 1 :

[0072] Use the roller screen and the drum screen to pre-grade the ore ore ore in the aluminum mines in 20 mm to obtain coarse grain-grade aluminum and high water-grained aluminum mines, and the coarse grain aluminum mine is used. The crusher and roller crusher are broken to 20 mm or less, then dry mill (rod mill) to particle size -0.074 mm, 70.43%, using CGR-54-type permanent magnet double roller strong magnetic field magnetic exchanger Perform a coarse (magnetic field strength 1.7T) a sweep ...

Embodiment 3

[0076] In this example, the Guinea three-water aluminum stone-type high-speed aluminum mine is taken from the Ribei mining area, with a percentage of mass, including Al 2 O 3 40.70%, SIO 2 1.52%, Fe 2 O 3 31.09%, useful minerals are three-water aluminum stone, and the pulse mineral is mainly aluminum needle iron ore, hematite, kaolinite, golden red, quartz, etc. The method of the present invention has a method of preventing hybridization and utilization of high-aluminum mines according to the present invention. figure 1 ,Specific steps are as follows:

[0077]The roller screen and the vibrating screen are used to pre-grade the ore ore in the aluminum mine mine in a crude grain-grade aluminum mine and high water-grained aluminum mine, and the crude grain-grade aluminum mine is obtained. The crusher and roller crusher are broken to 20 mm or less, and then dry mill (rod mill) to particle diameter of 66.43%, using CGR-54 dry permanent magnet double roller strong magnetic field magneti...

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Abstract

The invention particularly relates to a gibbsite type high-iron bauxite source area impurity removal and quality improvement method, and belongs to the technical field of mineral impurity removal. The method comprises the following steps: carrying out dry pre-classification on gibbsite type high-iron bauxite according to a preset classification particle size to obtain coarse-fraction bauxite and fine-fraction bauxite; crushing the coarse-fraction bauxite and then performing dry grinding to obtain dry-ground bauxite; performing first magnetic separation on the dry-ground bauxite, and obtaining first aluminum concentrate and high-iron tailings; mixing the high-iron tailings and the fine-fraction bauxite and then performing wet grinding to obtain wet-ground bauxite; performing second magnetic separation on the wet-ground bauxite, and obtaining wet aluminum concentrate and wet total tailings; performing sedimentation, filter pressing and airing on the wet aluminum concentrate and obtaining second aluminum concentrate; and mixing first aluminum concentrate and the second aluminum concentrate to obtain product aluminum concentrate. The method of the invention has the characteristics of low energy consumption, low production cost, high recovery rate, strong process adaptability, stable production, high comprehensive utilization rate, environmental friendliness and the like.

Description

Technical field [0001] The present invention belongs to the field of mineral bughus, and in particular, the method of exproprification of expropriation of three hydrolyzine high-speed rail aluminum mines. Background technique [0002] Aluminum mine is also known as aluminum alumina, which is widely used in alumina production process, in addition, a large number of industrial sectors such as high temperature refractory, high aluminum cement, ceramic materials and artificial corundum. With the rapid development of China's economy and alumina industry, China's demand for aluminum mineral resources has grown rapidly, while domestic aluminum mine reserves account for 3.3% of the global reserves, and poor quality, far from satisfying domestic alumina production demand. In recent years, the demand for importing mine has been rising. Since 2019, my country's annual imported aluminum mine has exceeded 100 million tons, of which Guinea accounts for about 40%, which has become the largest o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/14C04B7/24
CPCB02C21/00B02C23/14C04B7/24Y02P40/10
Inventor 张建强杜五星吴国亮郭鑫马俊伟刘中原张站云魏兆斌姚杰
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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