Method for preparing solid bricks from solid wastes generated by zinc hydrometallurgy

Abstract

The invention discloses a method for preparing solid bricks from solid wastes generated by zinc hydrometallurgy. According to the method disclosed by the invention, adopted raw material components andthe mass percent content of each component are as follows: 15.5 to 18.5 percent of aggregate, 4.7 to 6.5 percent of fly ash, 4.7 to 6.5 percent of blast furnace slag, 12.4 to 16.0 percent of cement,12.4 to 16.0 percent of an alkali activator and 40.0 to 50.0 percent of jarosite slag of the zinc hydrometallurgy and sewage treatment sludge of the zinc hydrometallurgy, wherein the mass ratio of thejarosite slag of the zinc hydrometallurgy to the sewage treatment sludge of the zinc hydrometallurgy ranges from (4 to 1) to (5 to 1). According to the method disclosed by the invention, wastes are treated by wastes, and the jarosite slag of the zinc hydrometallurgy and the sewage treatment sludge are wholly treated and utilized in a large batch; zero emission of the jarosite slag of the zinc hydrometallurgy and the sewage treatment sludge can be realized; meanwhile, the reducing, harmless and recycling aims of the jarosite slag of the zinc hydrometallurgy and the sewage treatment sludge arerealized.

Description

technical field [0001] The present invention relates to a method for preparing building materials by using industrial solid waste, in particular to a method for preparing solid bricks by using hazardous waste produced by zinc hydrometallurgy—alum slag and sewage treatment sludge, which belongs to the field of environmental engineering Harmless treatment, disposal and resource utilization of solid waste. Background technique [0002] Zinc smelting processes can be divided into two categories: pyrometallurgy and hydrometallurgy, among which hydrometallurgy zinc production accounts for more than 85% of my country's zinc production. The main production process of zinc hydrometallurgy is "zinc sulfide concentrate boiling furnace roasting - calcined sand leaching - leachate purification - hydrostatic electrowinning - electrozinc ingot casting". The leaching process can be divided into conventional method and hot acid leaching method. The zinc production of the acid leaching-alumi...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is aimed at the low resource utilization rate of jarosite slag and sewage treatment sludge existing in the prior art, serious environmental pollution, and the technology and funds for the treatment and disposal of zinc hydrometallurgy jarosite slag and sewage treatment sludge In order to solve a series of problems such as site and other problems, a method for preparing solid bricks from solid waste produced by hydrometallurgy can be realized, which can realize zero discharge of ferroinite slag and sewage treatment sludge, and at the same time achieve zinc-iron hydrometallurgy The purpose of reduction, harmlessness and resource utilization of alum slag and sewage treatment sludge

Images