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Physical upgrading method for enrichment of carbonaceous shale type vanadium ore

A carbonaceous shale, enrichment technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of high metallurgical cost and low grade of vanadium ore, and achieve high separation accuracy and equipment production capacity. Large, low production cost effect

Active Publication Date: 2015-03-25
贵州省贵金属矿产资源综合利用工程技术研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low grade of carbonaceous shale-type vanadium ore in the prior art and high metallurgical cost. The minerals are mainly quartz minerals with relatively heavy specific gravity. The three-product dense medium cyclone is used to make the vanadium-loaded Minerals and gangue minerals can be separated, vanadium-containing minerals can be enriched, so as to obtain higher-grade vanadium concentrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Follow the steps below to implement:

[0023] (1) Crushing and grinding the vanadium-containing carbonaceous shale ore until the fineness is -2.0mm, and the part with a fineness of -0.15mm is directly used as a concentrate product;

[0024] (2) Put the ore with a fineness of +0.15mm~-2.0mm in the dense medium cyclone, use ferrosilicon powder as the medium weighting agent, and mix the ferrosilicon powder with the ore by combining compressed air and mechanical stirring , using YTMC250 / 175 heavy medium cyclone, the separation medium density is 1225kg / m 3 , the ore feeding pressure is 0.07MPa, the overflow diameter of the second stage is 40mm, the diameter of the bottom flow of the second stage is Φ35mm, and the ore-to-mine ratio is 8:1, and the concentrate products and tailings products are separated.

[0025] (3) the concentrate product obtained in the step (2) is mixed with the concentrate product screened out in the step (1) after magnetic separation reclaims the ferro...

Embodiment 2

[0028] Follow the steps below to implement:

[0029] (1) Crushing and grinding the vanadium-containing carbonaceous shale ore until the fineness is -1.0mm, and the part with a fineness of -0.15mm is directly used as a concentrate product;

[0030] (2) Put the ore with a fineness of +0.15mm~-1.0mm in the dense medium cyclone, use ferrosilicon powder as the medium weighting agent, and use the method of combining compressed air and mechanical stirring to mix the ferrosilicon powder with the ore , using YTMC250 / 175 heavy medium cyclone, the separation medium density is 1275kg / m 3, the ore feeding pressure is 0.08MPa, the second-stage overflow diameter is Φ40mm, the second-stage underflow diameter is Φ30mm, and the mineral-to-mine ratio is 6:1, and the concentrate products and tailings products are separated.

[0031] (3) the concentrate product obtained in the step (2) is mixed with the concentrate product screened out in the step (1) after magnetic separation reclaims the ferros...

Embodiment 3

[0034] Follow the steps below to implement:

[0035] (1) Crushing and grinding the vanadium-containing carbonaceous shale ore until the fineness is -3.0mm, and the part with a fineness of -0.15mm is directly used as a concentrate product;

[0036] (2) Put the ore with a fineness of +0.15mm~-3.0mm in the dense medium cyclone, use ferrosilicon powder as the medium weighting agent, and mix the ferrosilicon powder with the ore by combining compressed air and mechanical stirring , using YTMC250 / 175 heavy medium cyclone, the separation medium density is 1325kg / m 3 , the ore feeding pressure is 0.06MPa, the second-stage overflow diameter is Φ50mm, the second-stage underflow diameter is Φ35mm, and the ore-to-mine ratio is 7:1, and the concentrate products and tailings products are separated.

[0037] (3) the concentrate product obtained in the step (2) is mixed with the concentrate product screened out in the step (1) after magnetic separation reclaims the ferrosilicon powder to obta...

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Abstract

The invention discloses a physical upgrading method for enrichment of carbonaceous shale type vanadium ore. According to the physical upgrading method, dense-medium separation is adopted in combination with hydrometallurgical leaching; in the dense-medium separation step, ferrosilicon powder is used as a medium heavy loader; after a concentrate product and a tailing product are obtained through separation, the ferrosilicon powder is recovered based on the magnetic separation method; a dense medium cyclone YTMC250 / 175 is adopted, the density of separating media is 1,225 kg / m<3>-1,450 kg / m<3>, ore feeding pressure intensity is 0.01 MPa-0.08 MPa, the second-stage overflow caliber phi is 40 mm-50 mm, the second-stage underflow caliber phi is 25 mm-35 mm, and the ratio of the media to ore is 8:1-2:1. The physical upgrading method can lower the ore grinding cost, and the ferrosilicon powder is adopted to serve as the dense medium heavy loader; the physical upgrading method has the advantages that equipment production capacity is high, separation accuracy is high, medium loss is small, and the production cost is low; by adopting the ferrosilicon powder as the upgrading heavy loader, no influence acts on the environment, and the subsequent vanadium extraction leaching rate through hydrometallurgical leaching is not affected.

Description

technical field [0001] The invention relates to a physical beneficiation method, in particular to a method for enriching carbonaceous shale-type vanadium ore by physical beneficiation. Background technique [0002] Vanadium is an important material for high-tech industries such as special steel, vanadium-titanium alloys, catalysts, and all-vanadium flow energy storage batteries, and is widely used in modern industrial technology. Vanadium ore resources mainly include vanadium-titanium magnetite and vanadium-bearing carbonaceous shale, among which vanadium-bearing carbonaceous shale accounts for 87% of the total reserves of vanadium ore resources in my country, and is an important resource of vanadium. [0003] Because vanadium in carbonaceous shale-type vanadium deposits mainly occurs in mica minerals in the form of isomorphism, the particle size of the vanadium-loaded minerals is too fine, and it is very difficult to beneficiate. Shale-type vanadium ores are used as raw ma...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 陈文祥龙忠银邓强胡万明余红林陈婧
Owner 贵州省贵金属矿产资源综合利用工程技术研究中心有限公司
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