Method for simultaneously extracting vanadium, aluminum and potassium from stone coal

A technology from vanadium stone coal and vanadium stone, which is applied in the field of extracting vanadium pentoxide, can solve the problems of poor resource utilization, low total recovery rate, and low recovery rate, and achieve the goals of protecting the environment, simplifying the process, and reducing costs Effect

Inactive Publication Date: 2013-05-22
贵州遵义汇兴铁合金有限责任公司
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Problems solved by technology

The total recovery rate of this process is lower than 50%, which means that the recovery rate is low and the effective utilization of resources is poor.

Method used

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  • Method for simultaneously extracting vanadium, aluminum and potassium from stone coal

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Embodiment Construction

[0011] Now in conjunction with accompanying drawing, the process flow of the present invention will be further described.

[0012] 1000 kilograms of mineral powder process operation embodiment:

[0013] 1. Vanadium-containing rocks are used as raw materials, also known as black shale vanadium ore and stone coal, the color is black and yellow, and the main content of each component is V 2 o 5 : 0.82% (V: 0.46%), Al 2 o 3 : 17.08%, K: 1.98%, Fe: 4%, the raw material ore is ball milled into 60-80 mesh ore powder.

[0014] 2. Add sodium peroxide catalyst and water and stir to form a ball. Sodium peroxide and water (weight ratio 1:10) are prepared into an aqueous solution, and 2.5 kg (2.5 liters) of this aqueous solution is added per ton of ore.

[0015] 3. Roast in a flat kiln or a rotary furnace for 6 hours and keep warm at 600-720°C.

[0016] 4. Add No. 1 extractant, control the temperature at 80-110°C for 24 hours, and add 500 kg (500 liters).

[0017] 5. Filter with a f...

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Abstract

The invention provides a novel process method for fractional low-temperature extraction of vanadium, aluminum and potassium, and the method is realized by taking sodium peroxide as a catalyst to replace sodium chloride, utilizing moderate temperature roasting and utilizing a first extraction agent, a second extraction agent and a third extraction agent. According to the method, waste water and exhaust gases such as chlorine and hydrogen chloride are not generated, the secondary roasting for conventionally preparing V2O5 is changed into the once roasting, and a technical process for preparing the V2O5 from ammonium vanadate or ammonium metavanadate is omitted, so that the technological process is simplified, the rate of recovery and the purity are improved, the cost is lowered, and the environment is protected. Mother solution is comprehensively utilized, and Al2O3 and K2SO4 are extracted, so that the resource is comprehensively utilized, the process is simple and feasible, and the method has relatively good economic and social benefits and is worth of popularization and application.

Description

technical field [0001] The invention belongs to the field of extracting vanadium pentoxide from vanadium-containing rocks and stone coal. Background technique [0002] my country began to conduct research on extracting vanadium from vanadium-containing rocks in the early 1960s. In the 1970s, it was generally used to add sodium chloride to roast, directly dissolve ammonium salts with water to precipitate ammonium metavanadate or ammonium polyvanadate, and then oxidize and roast to form Process of vanadium pentoxide. The total recovery rate of this process is lower than 50%, and the recovery rate is low and the effective utilization of resources is poor. Moreover, in the chlorination roasting process, 20-25 tons of sodium chloride needs to be added for roasting per ton of product, thus producing a large amount of smoke and dust that seriously pollutes the surrounding environment and difficult-to-handle corrosive substances such as hydrogen chloride, chlorine, and sulfur d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02C01F7/30C01D5/02
Inventor 刘廷军詹海青喻中甫
Owner 贵州遵义汇兴铁合金有限责任公司
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