Method for utilizing mineral separation backwater in magnesite reverse flotation desilicification

Abstract

The invention provides a method for utilizing mineral separation backwater in magnesite reverse flotation desilicification, which comprises the following steps: (1) introducing mineral separation backwater into a regulating tank, wherein the tank wall of the outflow end of the regulating tank is lower than the tank walls of the other three sides; (2) sending the mineral separation backwater into a stirring reaction tank through the outflow end of the regulating tank, adding a coagulating agent into the reaction tank, and stirring; (3) transferring the liquid obtained in the step (2) into a precipitation tank of which the bottom surface is a slope, standing for 6-12 hours, and discharging solid particles on the bottom; continuing standing for 12-24 hours, and discharging the water layer between the bottom layer and the plane at the highest point of the slope; (4) filtering out sand from the water, pumping into an adsorption tank, and adsorbing with activated carbon for 2-4 hours; and (5) pumping the adsorbed liquid into a reuse water tank, and carrying out reverse flotation on the backwater. The method is simple and easy to implement, has the advantages of low treatment cost and short treatment period, and can be widely industrialized in industry.

Description

technical field [0001] The invention relates to a magnesite smelting technology, in particular to a method for utilizing ore dressing return water in reverse flotation desiliconization of magnesite. Background technique [0002] China is one of the countries with relatively rich magnesite resources in the world, and the distribution is relatively concentrated. Among them, Liaoning Province has rich magnesite reserves, accounting for 85% of the national total, ranking first in the country. my country's magnesite industry has developed into a unique resource-based industry with an annual output of 15 million tons of magnesia and its products, ranking first in the world. [0003] Most of the magnesite ores in my country are of good quality, but they all contain SiO as an impurity to varying degrees. 2 and CaO, so that CaSiO is formed during calcination 3 , It is easy to loosen during cooling and cause the collapse of the refractory material, so it cannot be directly used as a...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to, aiming at the problem that the above-mentioned existing magnesite flotation wastewater cannot be effectively recycled, propose a method for utilizing magnesite reverse flotation desiliconization in mineral processing backwater, which can effectively recycle magnesite Reverse flotation and desiliconization of mineral processing backwater to realize the recycling of resources