A kind of beneficiation method for comprehensive utilization of high-iron aluminum ore

A technology for high-iron bauxite and mineral processing methods, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of inappropriate equipment selection, failure to develop and utilize, and high operating costs, and achieve simple and effective equipment. Fast and cost-effective

Active Publication Date: 2017-08-08
陈均宁
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Problems solved by technology

The "iron before aluminum" plan has completed the laboratory expansion test and industrial test, and has been successful, but it has not been developed and utilized due to the lack of a suitable plan for the selection of equipment for the slag slow cooling process, high energy consumption, and high operating costs.

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  • A kind of beneficiation method for comprehensive utilization of high-iron aluminum ore
  • A kind of beneficiation method for comprehensive utilization of high-iron aluminum ore

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Embodiment 1

[0028] The beneficiation method of high-iron bauxite comprehensive utilization of the present invention comprises the following steps:

[0029] 1.1 Preprocessing

[0030] The high-iron bauxite ore is crushed first, and the ore is ground to a particle size of 38 μm to 75 μm, and then sent to the thickener, and the underflow pump is sent to the pulping tank for pulping, and the pulp concentration is adjusted to 30 to 50%, and the iron content is 12 to 45%. The aluminum content is 10-45%, the average temperature is normal temperature, and the supernatant is returned to the ore flushing or pulping.

[0031] 1.2 Particle size screening

[0032] After pulping, the pulp is sent to the cylindrical sieve for sieving, and the sieve residue with a particle size greater than 500 μm is returned to the grinding process, and the pulp with a particle size of less than 500 μm enters the next process—high gradient magnetic separator. At this stage, all unloading water enters the tailings , Th...

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Abstract

The invention discloses a beneficiation method for comprehensive utilization of a high iron aluminum ore. The beneficiation method comprises the following steps: the crushing, the ore grinding, the size mixing, the particle size screening and the rough separation and fine separation of a high-gradient magnetic separator are performed for the high iron aluminum ore to primarily separate iron and aluminum. The reverse floating desiliconization is performed for an ultrafinely grinded tailing to obtain 58-65% of high-quality bauxite; the aluminum-silicon ratio is 8-12; then, the high-quality bauxite is fed into an oxide aluminum system; the magnetically separated iron ore is ultrafinely grinded, and is floated to upgrade; the chemical beneficiation and the impurity removal are performed to obtain 56-62% of high-quality iron concentrate; and pig iron or reduced iron is fed into a production system. The beneficiation method is suitable for the bauxite with 12-45% of iron content and 10-45% of aluminum content, and has the characteristics of simple process, operation environmental protection, low energy consumption and wide applicability.

Description

technical field [0001] The invention relates to the technical field of mineral processing, and provides a mineral processing method for comprehensive utilization of high-iron aluminum ore. Background technique [0002] Sanhydrate bauxite in a certain place in Guangxi belongs to high-iron bauxite, which is a refractory ore in alumina production. The country and relevant ministries and commissions in Guangxi entrusted relevant colleges to carry out scientific research on high-iron bauxite. There are two main process methods Options. One is the "aluminum first, then iron" scheme, that is, the red mud produced by extracting alumina by the Bayer method is first processed in a rotary kiln under a reducing atmosphere to extract sponge iron. The other is the "iron before aluminum" scheme, that is, using blast furnaces to produce iron, and the resulting blast furnace slag is used to produce alumina at room temperature. The "iron before aluminum" scheme has completed the laboratory ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 陈均宁黎方正周干联黄荣满钟文潘建军付力豪张美义蒋鲲鹏廖承业柳丽梅李珏甘桂裕刘泽
Owner 陈均宁
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