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Comprehensive recycling method for vanadium-contained coal-pyrite

A technology of pyrite and coal series, which is applied in the field of comprehensive recycling of vanadium-containing coal series pyrite, can solve the problems of high consumption of calcium oxide, etc., and achieve the effects of high comprehensive utilization rate, low consumption and low production cost

Active Publication Date: 2018-06-15
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0006] The invention provides a method for comprehensive recovery and utilization of vanadium-containing coal-based pyrite ore. This method adopts the stage grinding stage separation gravity-flotation combined method to realize the separation and enrichment of coal and sulfur in the raw ore, and the vanadium-rich coal concentrate Combustion power generation-vanadium extraction by leaching slag to realize the comprehensive utilization of vanadium-containing coal-based pyrite, overcoming the high energy consumption of fine-grained useful mineral monomer dissociation and the high consumption of calcium oxide caused by changing the acidic flotation environment and the direct leaching of raw ore Three major problems of high acid consumption in vanadium extraction

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  • Comprehensive recycling method for vanadium-contained coal-pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: The vanadium-containing coal-measure pyrite in this example adopts a certain vanadium-containing coal-measure pyrite in Guizhou, which contains V 2 o 5 0.67%, C 12.62%, S 6.34%, useful minerals are vanadium-containing coal, pyrite, gangue minerals are mainly quartz, kaolinite, etc.;

[0034] Such as figure 1 Shown, a kind of vanadium-containing coal measures pyrite comprehensive recycling method, concrete steps are as follows:

[0035] (1) Crushing the vanadium-containing coal-based pyrite to a particle size of -3mm, and then using a classifier to wash the ore to obtain coarse-grained sand and fine-grained overflow;

[0036] (2) carry out coarse grinding to particle diameter-0.074mm content of step (1) gained sedimentation and account for 50.64%, then carry out chute re-election to obtain coarse-grained chute re-concentration and fine-grained chute re-concentration;

[0037] (3) Finely grind the coarse-grained chute gravity separation ore obtained in ste...

Embodiment 2

[0048] Embodiment 2: The vanadium-containing coal-measure pyrite in this embodiment adopts a certain vanadium-containing coal-measure pyrite in Guizhou, which contains V 2 o 5 0.67%, C 12.62%, S 6.34%, useful minerals are vanadium-containing coal, pyrite, gangue minerals are mainly quartz, kaolinite, etc.;

[0049] Such as figure 1 Shown, a kind of vanadium-containing coal measures pyrite comprehensive recycling method, concrete steps are as follows:

[0050] (1) Crushing the vanadium-containing coal-based pyrite to a particle size of -3mm, and then using a classifier to wash the ore to obtain coarse-grained sand and fine-grained overflow;

[0051] (2) carry out coarse grinding to particle size-0.074mm content of step (1) gained sedimentation and account for 48.64%, then carry out chute re-election to obtain coarse-grained chute re-concentration ore and fine-grained chute re-concentration;

[0052] (3) Finely grind the coarse-grained chute gravity separation ore obtained i...

Embodiment 3

[0063] Embodiment 3: The vanadium-containing coal-measure pyrite in this embodiment adopts a certain vanadium-containing coal-measure pyrite in Guizhou, which contains V 2 o 5 0.67%, C 12.62%, S 6.34%, useful minerals are vanadium-containing coal, pyrite, gangue minerals are mainly quartz, kaolinite, etc.;

[0064] Such as figure 1 Shown, a kind of vanadium-containing coal measures pyrite comprehensive recycling method, concrete steps are as follows:

[0065] (1) Crushing the vanadium-containing coal-based pyrite to a particle size of -3mm, and then using a classifier to wash the ore to obtain coarse-grained sand and fine-grained overflow;

[0066] (2) carry out coarse grinding to particle diameter-0.074mm content of step (1) gained sedimentation and account for 53.98%, then carry out chute re-election to obtain coarse-grained chute re-concentration ore and fine-grained chute re-concentration;

[0067] (3) Finely grind the coarse-grained chute gravity separation ore obtain...

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Abstract

The invention relates to a comprehensive recycling method for vanadium-contained coal-pyrite and belongs to the field of mineral process engineering. The method comprises the steps that the vanadium-contained coal-pyrite is subjected to crushing and ore washing classification to obtain coarsely-graded sunk sand and fine-graded effusion, and sulfur concentrate is obtained after the sunk sand is subjected to the technologies of coarse grinding, chute reselection, fine grinding, table reselection and flotation; fine-graded substances obtained through ore washing, chute treatment and table treatment are subjected to concentration and treatment of the technology of "coal flotation before sulfur flotation" in sequence to obtain vanadium-enriched coal concentrate, sulfur rough concentrate and tailings; and the vanadium-enriched coal concentrate is subjected to burning power generation and treatment of the technologies of burning residue acid leaching, immersion liquid extracting and enriching, reextraction, vanadium precipitation and deamination to obtain refined vanadium. The method is used for solving the three problems that fine-graded valuable mineral monomer separation is high in energy consumption, acid flotation environment changing consumes high calcium oxide, raw ore direct leaching for vanadium extraction is high in acid consumption, and has the characteristics of low energyconsumption, high recovery rate, low acid and flotation reagent consumption, low production cost, high technological adaptability, stable production, high comprehensive utilization rate and low environmental pollution.

Description

technical field [0001] The invention relates to a method for comprehensive recovery and utilization of vanadium-containing coal series pyrite, which belongs to the field of mineral processing engineering. Background technique [0002] my country has rich reserves of pyrite resources, which can be roughly divided into common metal pyrite and coal-measure pyrite, of which coal-measure pyrite reserves account for about 50%, and the embedded distribution of pyrite in this type of ore is extremely uneven. Gangue minerals are mainly clay and carbonaceous, and the beneficiation is relatively complicated. At the same time, rare and precious metals such as vanadium, nickel, uranium, selenium, gallium, and silver may also be associated with the coal, which is a complex and difficult ore. At this stage, the utilization rate of this kind of ore is low. With the mining and utilization of mineral resources, the mineral resources are decreasing day by day. It is inevitable to develop and co...

Claims

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Application Information

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IPC IPC(8): B03B9/00B03B1/00B03D1/00C22B3/08C22B7/04C22B34/22
CPCC22B3/08C22B7/007C22B7/04C22B34/22B03B1/00B03B9/00B03D1/00Y02P10/20Y02P70/10
Inventor 杜五星戴惠新戴菲赵泓铭王飞旺吕玉辰张磊王鹏
Owner KUNMING UNIV OF SCI & TECH
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