Extraction method of vanadium from stone coal with pollution treatment and ceramic production combination

A technology of ceramics and stone coal, which is applied in the production of ceramic materials, vanadium oxide, and the improvement of process efficiency. It can solve the problems of low added value of unburned bricks, limited production volume of freight costs, and limited amount of cement addition, so as to save investment costs. , reduce duplication of investment, improve the effect of quality

Inactive Publication Date: 2008-07-02
王雄鹰 +1
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Problems solved by technology

According to reports, some waste residues are currently used as raw materials for the production of cement and unburned bricks, but the amount of cement added is limited, the added value of unburned bricks is too low, and the expensive freight limits production. Therefore, for one ton of vanadium pentoxide, 200 -300 tons of waste residue is just a drop in the bucket

Method used

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  • Extraction method of vanadium from stone coal with pollution treatment and ceramic production combination

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Embodiment Construction

[0019] Referring to the accompanying drawings: after crushing vanadium-containing stone coal of 1-20mm, put it into roasting furnace 1 and circulating fluidized bed boiler 2 for low-sodium roasting, and the flue gas produced is introduced into spray drying tower 3 as hot air, and sprayed into mist The mud is heat-exchanged and dried, and its exhaust gas and newly evaporated water vapor are pumped into the cyclone dust collector 4 for further dust removal, and then discharged into the water curtain dust removal chamber 5. Harmful gases such as hydrogen chloride and chlorine gas are dissolved into the water, and finally discharged through the chimney 6 for clean water vapor.

[0020] The steam generating set 7 obtains high-pressure steam from the circulating fluidized bed 2 to generate electricity, and provides electric energy for the enterprise power grid. The investment in building large boilers is saved, and the more important thing is that the heat energy of steam after powe...

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Abstract

A method for extracting vanadium from bone coal and controlling pollution combined with ceramic production is carried out by taking vanadium-contained bone coal as fuel and raw material, break grinding, roasting, diffusing to obtain vanadium-contained brining, utilizing waste gas from roasting process as heat source for generation and ceramic spraying dry tower, clean discharging by dust-proofing and scrubbing system treatment, and utilizing fag end from diffusion process as ceramic ingot components to realize zero discharge. It has no poisonous gas and environmental pollution, has better quality, shares producer and costs low.

Description

【Technical field】 [0001] The invention relates to a method for extracting vanadium pentoxide from stone coal and using its waste gas and waste residue to produce ceramic products so as to radically cure its pollution, which belongs to the field of chemical industry. 【Background technique】 [0002] Currently known technologies for extracting vanadium pentoxide from stone coal all have different degrees of waste gas and waste residue pollution. Because of low investment and simple process, it is commonly used by the majority of indigenous vanadium smelters to add sodium chloride to roast, heat leaching, acid decomposition to precipitate crude vanadium, alkali-soluble crude vanadium, ammonium to precipitate ammonium metavanadate, and then ignite to produce pentavanadate. For the traditional process route of vanadium oxide, 22-25 tons of sodium salt need to be burned per ton of vanadium pentoxide, and the roasting flue gas contains a large amount of hydrogen chloride and chlorin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/02C04B33/138C22B3/04
CPCY02P10/20Y02P40/60
Inventor 王雄鹰
Owner 王雄鹰
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