Beneficiating method of diaspore type bauxite

A beneficiation method and bauxite technology, which can be used in flotation, solid separation, etc., and can solve problems such as single

Inactive Publication Date: 2010-01-27
XIAOYI TIANZHANG ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Individual patents only obtain a single high-alumina refractory raw material

Method used

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  • Beneficiating method of diaspore type bauxite
  • Beneficiating method of diaspore type bauxite
  • Beneficiating method of diaspore type bauxite

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Bauxite raw ore Al 2 o 3 67.58%, SiO 2 10.08%, aluminum silicon ratio 6.70. The beneficiation and separation process includes grinding the first stage of the raw ore with a particle size of -0.074mm to account for 55%. The reagent system used in the flotation roughing is: sodium carbonate dispersant 6000g / t, fatty acid collector 500g / t, flotation time 4 minutes; the reagent system for roughing underflow sweeping is: fatty acid collector 100g / t, and the flotation time is 4 minutes; the underflow of sweeping is wet sieved with a 0.074mm sieve, and the product under the sieve is low-aluminum products; Blank selection, underflow concentration using 0.074mm sieve wet sieve, the under-sieve product enters the sweeping operation, and the above-sieve product of the two classifications is combined for regrinding (grinding fineness is -0.043mm particle size accounts for 85%) and the product and sweeping The foams are merged into the roughing operation; the foams that have been...

Embodiment 2

[0050] Bauxite raw ore Al 2 o 3 68.20%, SiO 2 9.70%, aluminum silicon ratio 7.04. Grinding fineness of the first stage of raw ore -0.074mm particle size accounts for 60%. The reagent system used in the flotation roughing is: sodium carbonate dispersant 5000g / t, fatty acid collector 600g / t, flotation time 4 minutes; roughing underflow The agent system for sweeping is: fatty acid collector 100g / t, flotation time 4 minutes; the underflow of sweeping is wet sieved with a 0.074mm sieve, and the products under the sieve are low-aluminum products; Wet sieve with 0.074mm sieve, the under-sieve product enters the sweeping operation, and the above-sieve product of the two classifications is combined for regrinding (grinding fineness is -0.043mm particle size accounts for 95%) and the product is combined with the sweeping foam to enter the roughing operation ;Twice-selected foam undergoes one roughing, one refining, and one sweeping to realize the separation of high-aluminum products ...

Embodiment 3

[0054] Bauxite is the test ore sample, raw ore Al 2 o 3 67.55%, SiO 2 10.61%, aluminum silicon ratio 6.37.

[0055] Grinding fineness of the first stage of raw ore -0.074mm particle size accounts for 65%. The reagent system used in flotation roughing is: sodium carbonate dispersant 5000g / t, fatty acid collector 600g / t, flotation time 4 minutes; roughing underflow The agent system for sweeping is: fatty acid collector 150g / t, flotation time 4 minutes; the sweeping underflow is wet sieved with a 0.074mm sieve, and the products under the sieve are low-aluminum products; Wet sieve with 0.074mm sieve, the under-sieve product enters the sweeping operation, and the above-sieve product of the two classifications is combined for regrinding (grinding fineness is -0.043mm particle size accounts for 90%) and the product is combined with the sweeping foam to enter the roughing operation ;Twice-selected foam undergoes one roughing, one refining, and one sweeping to realize the separation...

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Abstract

The invention relates to a beneficiating method of diaspore type bauxite, which is characterized by comprising the following steps: carrying out single-stage coarse grinding on raw bauxite, enabling ground bauxite products and a flotation reagent to act, and directly entering a rough concentration task; carrying out single scavenging on rough concentration base flow, grading scavenged base flow to obtain a low-grade bauxite product as a fine fraction product; carrying out twice blank selection on rough concentration foam, intensively grading the base flow, scavenging the fine fraction product, combining the scavenged foam and twice-grading coarse fraction regrinding products, and intensively carrying out floatation and rough concentration with the single-stage ground bauxite products; carrying out single rough concentration, single selection and single scavenging on the selected II foam, and then obtaining a high-grade bauxite product and a medium-grade bauxite product. The beneficiating method can obtain three kinds of products with different A/S, wherein a high aluminum product with the Al2O3 content being higher than 75 percent is used for calcining high aluminum clinkers, a medium aluminum product with the A/S being 8-12 is used for producing alumina by a Bayer process, and a low aluminum product with the A/S being about 2.55 is used for synthesizing mullite type refractory material, thereby realizing tailless production; the comprehensive utilization ratio of diaspore type bauxite approaches to 100 percent.

Description

technical field [0001] The invention relates to a beneficiation method of diaspore type bauxite. Background technique [0002] Bauxite is an important raw material for the alumina industry and the refractory industry. my country's bauxite resources are dominated by diaspore type, and the ore with low-to-medium aluminum-silicon ratio (4-8) accounts for 80%, and the low-cost Bayer process cannot be used directly to produce alumina. Due to the popularization of the "mineralization-Bayer method" production process of alumina, the amount of available bauxite resources in my country has more than doubled, the guarantee period of resources has increased to more than 50 years, and the comprehensive energy consumption of alumina production has been reduced by 50%. Then there is the problem of processing tailings. The aluminum-silicon ratio of the tailings is about 1.5. The current treatment method is to simply discharge them into the tailings pond. Bauxite beneficiation tailings ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/00
Inventor 任爱军张天章郑桂兵曾克文刘水红张云海李松清田祎兰
Owner XIAOYI TIANZHANG ALUMINUM
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