A kind of special curing agent for curing gold mine tailings mud and application method

Abstract

The invention relates to a special curing agent for curing gold mine tailings mud. The raw materials include 3%-7% of calcium silicate, 5%-8% of limestone, 10%-15% of gypsum and 0-1% of silicon oxide according to the mass ratio. , alumina 0-2%, coking desulfurization and denitrification ash 5%-10%, slag powder 57%-77%. The application method of the special solidifying agent for solidifying gold mine tailings mud is to mix the special solidifying agent and the gold mine tailing mud according to the ratio of 1:8-10 and then solidify. The curing agent component undergoes a series of inorganic macromolecular chemical reactions with mineral alkali metal ions, alkaline earth metal ions and water to form a large number of crystalline hydrates with plastic strength, bonding strength and great chemical inertness, slight expansion, and significant drainage. The colloid component acts as the cement of the particles and the pore filler, thereby greatly improving the structural strength of the mud drainage sediment. The gold mine tailings slurry using special curing agent can be backfilled or solidified by dry heap, and the 28-day compressive strength can reach more than 1.7MPa.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of metallurgical solid waste resources, in particular to a special curing agent for curing gold mine tailings mud. Background technique [0002] Steel mills generate a large amount of metallurgical solid waste resources every year, such as coking desulfurization and denitrification ash. At present, the comprehensive utilization rate is not high, and a large amount of stacking not only occupies arable land, but also pollutes the environment. Gold mining produces a large amount of tailings mud every year, which cannot be directly backfilled or solidified by other methods, which is costly. This application relates to how to turn metallurgical solid waste resources into treasures and at the same time solve the problem of gold mine tailings mud. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a special curing agent for solidifying ...

AI Technical Summary

Problems solved by technology

[0002] Steel mills produce a large amount of metallurgical solid waste resources every year, such as coking desulfurization and denitrification ash. At present, the comprehensive utilization rate is not high, and a large amount of stacking not only occupies arable land, but also pollutes the environment.

Gold mining produces a large amount of tailings slurry every year, which cannot be directly backfilled or solidified by other methods, which is costly