Extraction method for extracting vanadium pentoxide from low grade oxidized type navajoite

Abstract

The invention provides an extraction method for extracting vanadium pentoxide from low grade oxidized type navajoite. The method is as follows: crushing and grinding raw ores of the oxidized type navajoite, grading the crushed and grinded raw ores into coarse fraction products and fine fraction products; selecting mineral containing vanadium from the coarse fraction products by flotation to obtain vanadium concentrate, combining the fine fraction products with the vanadium concentrate to service as bulk concentrate, and taking the underflow of flotation as final tailings; drying the bulk concentrate, adding CaCO3 into the dried bulk concentrate, evenly mixing the CaCO3 with the bulk concentrate, placing the mixture into a disk granulator for pelletizing, leading particles into a rotary kiln for roasting, discharing and cooling calcined ores, leading the calcined ores into a lattice ball mill for wet grinding, levigating ore pulp, adding sulfuric acid the calcined ore quantity of which is 3%-5% into the ore pulp, performing agitation leach in an agitator bath for 4-6h, keeping the pH value within 2.0-2.5, leading lixivium produced by filtering the ore pulp to the purification procedure, washing leaching residues for three times so as to be prepared into building materials, and performing purification, resin adsorption, resolving, vanadium sinking and roasting on the lixivium to obtain a vanadium pentoxide product. The process of the invention adopts a technique of preparing with low cost, thereby effectivly improving the grade of vanadium raw materials, lowering the production cost and solving the problem of enviromental pollution.

Description

technical field [0001] The invention proposes a vanadium pentoxide beneficiation and smelting process method from low-grade oxidized vanadium ore, and relates to an ore grinding and grading process, a flotation process and a smelting process. Background technique [0002] A low-grade oxidized vanadium ore, mainly composed of clayey rock and black siliceous shale, the main minerals of clayey rock are quartz, opal, illite (water muscovite), sepiolite, kaolinite, green Mudstone, etc.; the main constituent minerals of black silica are quartz and opal, containing a small amount of sulfide, carbonate minerals, limonite, feldspar, clay minerals and carbonaceous substances. [0003] The surface layer of the Tangtuo mining area of ​​Sinosteel Hunan Phoenix Mining Co., Ltd. belongs to low-grade oxidized vanadium ore. The raw ore contains 0.93% vanadium pentoxide. The element available for recovery in the ore is vanadium. Stone, kaolin and limonite etc. Vanadium is mainly low-priced ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a method for extracting vanadium pentoxide from low-grade oxidized vanadium ore in order to overcome defects such as high production cost and serious environmental pollution in the prior art. technology to effectively improve the grade of raw materials for vanadium extraction; adopt specially formulated optimized flotation and smelting process, which reduces the processing capacity of smelting materials, reduces smelting investment, reduces the production cost of unit products, and overcomes the problem of environmental pollution

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