A method for green and efficient utilization of carbon in high-carbon vanadium-containing stone coal and pre-enrichment of vanadium

Abstract

The invention discloses a method for green and efficient utilization of carbon in high-carbon vanadium-containing stone coal and preenrichment of vanadium, and belongs to the field of comprehensive utilization of resources. The method comprises the steps that high-carbon vanadium-containing stone coal mine is used as a raw material, Fe2O3 is used as an additive, MgO or Al2O3 is used as a modifier,and the raw material is crushed and fully mixed with the additive and the modifier to prepare a pellet; after the pellet is dried, the carbon in the high-carbon stone coal is gasified and roasted byusing steam to obtain a product, and vanadium-containing enrichment phase of a ferrovanadium spinel is obtained in the product; and a vanadium-containing concentrate with less impurity content and high vanadium grade is obtained through crushing, grinding and magnetic separating. The method has the advantages of high resource utilization rate, energy conservation, environmental protection, carbongasification, high vanadium enrichment efficiency and the like; according to the method, the carbon resources in high-carbon stone coal can be greenly and efficiently converted into clean energy, andthe vanadium enrichment phase convenient to separate with high vanadium content can be obtained; and the method can greenly and efficiently treat the high-carbon vanadium-containing stone coal resources, and has important significance for comprehensive utilization of the stone coal resources.

Description

technical field [0001] The invention belongs to the technical field of utilization of high-carbon vanadium-containing stone coal carbon resources and pre-enrichment of vanadium. Specifically, the method is to pre-enrich vanadium resources in high-carbon stone coal to obtain vanadium-rich concentrate with higher vanadium grade. And convert the carbon resources into clean energy. This method can treat high-carbon vanadium-containing stone coal resources in a green and efficient manner, and is of great significance to the comprehensive utilization of stone coal resources. Background technique [0002] Vanadium is a transition metal. Due to its excellent physical and chemical properties, metal vanadium, vanadium compounds and vanadium alloys are widely used in various fields of society. There are many vanadium-containing minerals in my country, which are widely distributed and have huge reserves. However, there are two main types of vanadium mines with high industrial utilizat...

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Problems solved by technology

However, when high-carbon stone coal is pretreated by flotation or re-election, it will cause the loss of vanadium resources, which will greatly reduce the recovery rate of vanadium.

[0004] Therefore, there are many problems in terms of technology, cost and environmental protection, whether direct oxidation roasting power generation and tailing leaching technology, or physical beneficiation pretreatment vanadium-rich technology are used to process high-carbon vanadium-containing stone coal resources.

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