Method for enrichment of vanadium in vanadium-containing stone coal and V-concentrating phase regulation

A technology of vanadium-containing stone coal and enrichment phase is applied in the field of vanadium pre-enrichment, which can solve the problems of low recovery rate of vanadium, and achieve the effects of low pollution, good adaptability and wide treatment range.

Active Publication Date: 2016-10-12
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

This method can only recover the fine-grained vanadium-containing illite part, but cannot recover the coarse-grained vanadium-containing muscovite, resulting in a low vanadium recovery rate.

Method used

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  • Method for enrichment of vanadium in vanadium-containing stone coal and V-concentrating phase regulation
  • Method for enrichment of vanadium in vanadium-containing stone coal and V-concentrating phase regulation
  • Method for enrichment of vanadium in vanadium-containing stone coal and V-concentrating phase regulation

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Embodiment Construction

[0032] In order to verify the feasibility of the present invention, the content of the present invention will be further described with examples below, but the content of the present invention is not limited to the following embodiments. Simple modifications made according to the essential content of the present invention should all fall within the protection scope of the present invention.

[0033] The raw material selected in this example is a vanadium-containing stone coal mine in Yichang, Hubei. The content of vanadium in the ore is about 0.5% to 0.7%, vanadium is mainly distributed in mica minerals, and mica minerals account for about 20% to 30% of the minerals. The content of C in the ore is 5.75%, of which 5.02% is in the form of carbonate, and amorphous carbon only accounts for 0.73%, and it is in close symbiosis with the quartz in the ore. The calculation from reaction (5) shows that when the mass of vanadium-containing stone coal added is x(g), the added Fe 2 O 3 The m...

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Abstract

The invention relates to a method for enrichment of vanadium in vanadium-containing stone coal and V-concentrating phase regulation. The method includes: taking stone coal vanadium ore as the raw material, using Fe2O3 and carbon powder as the additives; carrying out crushing and mixing to obtain pellets, performing roasting at a temperature of 900-1100DEG C so as to obtain a V-concentrating phase composed of Fe, V and O in stone coal. The method is characterized in that: (1) vanadium is enriched into the V-concentrating phase composed of Fe, V and O by a high temperature chemical process, and compared with the conventional physical beneficiation method, the enrichment efficiency is higher; (2) the adding amount of carbon powder can be adjusted according to the carbon content of stone coal, the adaptability is good, and the treatment scope is wider; and (3) by changing the roasting conditions, V-concentrating phase regulation can be realized. The method provided by the invention not only can the V-concentrating phase with high vanadium content and particle size suitable for subsequent separation, but also can control the V-concentrating phase, has the advantages of wide application range and high enrichment efficiency, and is suitable for application in the technical field of vanadium preconcentration in vanadium-containing stone coal.

Description

Technical field [0001] The invention belongs to the technical field of pre-enrichment of vanadium in vanadium-containing resources, and specifically relates to enriching vanadium elements with low content, scattered distribution and complex occurrence states in vanadium-containing stone coal, and regulating and controlling vanadium enrichment phases Methods. Background technique [0002] Vanadium-bearing stone coal is an important vanadium ore resource in my country. The vanadium in vanadium-bearing stone coal has been proven to account for 87% of the country’s total vanadium reserves. Therefore, extracting vanadium from vanadium-bearing stone coal is important for obtaining vanadium resources. way. However, vanadium in vanadium-bearing stone coal has low grade, dispersed distribution, and complex occurrence of vanadium. The vanadium content is V 2 O 5 The calculation is only about 1%. Therefore, direct leaching and extraction of vanadium from vanadium-bearing stone coal inevita...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B34/22
CPCC22B1/02C22B34/22
Inventor 闫柏军汪大亚吴六顺王珏董元篪
Owner UNIV OF SCI & TECH BEIJING
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