Metal ore mining tailings slurry curing agent and its application process

Abstract

The invention provides a metal mineral product exploitation tailing slurry curing agent and its application technology. The curing agent is prepared by stirring a mixture composed of steel slag micro-powder or grain slag powder and auxiliary materials under a rotating speed of above 400rpm for 7-10min; the mixture comprises 10-15% of sulfate, 9-14% of carbonate, 6-8% of aluminate, 5-10% of sulfoaluminate, 6-10% of ferriferous oxide, 5-20% of chloride, 4-8% of hydroxide, 15% of calcium oxide and 15% of silicon oxide; the steel slag micro-powder or grain slag powder is steel slag micro-powder or grain slag powder generated in the iron making or smelting process of iron ore; and the fineness of each of the above various raw materials is above 450 meshes.

Description

technical field [0001] The invention belongs to the field of mining engineering, and in particular relates to a metal ore mining tailings curing agent and an application process thereof. technical background [0002] All countries in the world mine a large amount of various metal minerals every year, including two categories of non-ferrous metal minerals and ferrous metal minerals (ie iron ore), especially in my country. However, a large amount of tailings slurry harmful to the environment will be produced in the mining of metal minerals (the concentration is generally 55%-70%, and a few are below 55% or above 70%). For example: Gushan Mining Company of Maanshan Iron and Steel Group Co., Ltd. and Mushan Iron Mine mine 1.1 million tons of iron ore (large-scale mines) annually and produce 600,000 tons of tailings slurry. For a long time, in the mining of metal minerals at home and abroad, whether it is underground mining or open-pit mining, a large amount of tailings slurry p...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned defects in the prior art. Aiming at a large amount of tailings slurry produced in the mining of metal minerals, in order to prevent the environmental pollution of tailings slurry, realize the recovery and reuse of tailings liquid, reduce the cost of backfilling in goaf, and reduce the cost of goaf Difficulties in backfilling the area, expanding the discharge capacity of tailings ponds, avoiding landslides and debris flows in tailings ponds, especially comprehensively promoting the sustainable development of the mining industry, the coordinated development of mining activities and the environment, reliably implementing the scientific development concept of mining development, and striving to strengthen mines Environmental protection and disaster emergency treatment capabilities, the present invention proposes a metal ore mining tailings curing agent and its application process