Wet method smelting process of high silicon zinc oxide crude ore

Abstract

The invention relates to a wet method smelting process for high silicon zinc oxide crude ore. The invention belongs to the field of wet method smelting, and provides a method for the direct leaching of high silicon, high-ferro zinc oxide crude ore. The method comprises the following steps: firstly the high silicon, high ferro zinc oxide crude ore is crushed and undergoes the wet mode ball milling and the acid leaching through the discarded electrolyte used in a zinc hydrometallurgy process; according to the content of ferrous iron ions during the acid leaching, potassium permanganate and / or manganese dioxide are / is added in an extracting stage; the dosage of the potassium permanganate and / or manganese dioxide is controlled 1 to 10 percent of the total weight of the ore; during the leaching, the temperature is controlled 40 to 90 DEG C, and the acidity pH value is 0.5 to 5.2; and a flocculant is added into the leached ore pulp for flocculation and concentration. According to the invention, the direct leaching of the high silicon zinc oxide ore can avoid the formation of silica sol, thereby effectively utilizing the high silicon zinc oxide ore resources. Compared with other high silicon ore treatment processes, the process has the advantages of low acid consumption, low production cost, simple technology, and the like.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, and is a method for directly leaching high-silicon and high-iron zinc oxide raw ore. Background technique [0002] With the expansion of the scope of zinc use, the consumption of zinc products in various countries in the world is increasing year by year, and the supply of zinc sulfide ore is becoming increasingly insufficient. The mining and utilization of zinc oxide ore has gradually attracted people's attention. my country's zinc oxide ore reserves are very rich and widely distributed, among which Yunnan and Guizhou rank first. However, the grade of this kind of ore is low, and its silicon content is also high, so it is difficult to separate it by beneficiation method. If the raw ore is directly processed by fire method, a large amount of gangue needs to be added, and the cost is high. The contradiction cannot be fundamentally resolved, so that the recovery rate is low, so high-silicon zinc oxid...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-silicon zinc oxide raw ore hydrometallurgy process, which can utilize zinc oxide raw ore with low zinc grade and high iron and high silicon content. The process is simple and can effectively solve the existing problems. During the leaching process, the solution contains high iron content, and it is easy to form silica gel and other problems.