A method for enriching vanadium in vanadium-containing stone coal and controlling the vanadium-enriched phase

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 a method for enriching vanadium elements with low content, scattered distribution and complex occurrence state in vanadium-containing stone coal, and regulating the vanadium-enriched phase Methods. Background technique [0002] Vanadium-containing stone coal is an important vanadium resource in my country. The proven vanadium-containing stone coal accounts for 87% of my country's total vanadium reserves. Therefore, extracting vanadium from vanadium-containing stone coal is an important way to obtain vanadium resources. way. However, vanadium in vanadium-bearing stone coal has low grade, scattered distribution, and complicated vanadium occurrence state. The vanadium content is expressed as V 2 o 5 The calculation is only about 1%. Therefore, direct leaching of vanadium from vanadium-containing stone coal inevitably ...

AI Technical Summary

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.

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