Method for utilizing mineral separation backwater in magnesite reverse flotation desilicification

A technology for reverse flotation desiliconization and magnesite, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., and can solve the problem that magnesite flotation wastewater cannot be effectively recycled. and other problems, to achieve the effect of low treatment cost, short treatment period and industrial water saving.

Inactive Publication Date: 2014-12-03
营口东吉科技(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment 1

[0031] This embodiment discloses a method for utilizing ore dressing backwater in reverse flotation desiliconization of magnesite, comprising the following steps:

[0032] (1) The ore dressing return water is introduced into the adjustment pool, and the height of the pool wall at the outflow end of the adjustment pool is 1 / 2 of the height of the pool walls of other triangular faces. The bottom of the adjustment tank is provided with a stirring device to prevent solid particles from settling, causing excessive deposition at the bottom of the adjustment tank and reducing the adjustment effect.

[0033] (2), the mineral dressing backwater enters the stirring reaction tank through the outflow end of the regulating tank, adds a coagulant and stirs in the reaction tank, the coagulant is aluminum sulfate; the stirring is a staged frequency stirring: first the stirrer is stirred at 60r / min stirring for 10 minutes, then stirring for 40 minutes at 40r / min for 5 minutes, and finally sti...

Embodiment 2

[0045] In this embodiment, the ore dressing backwater in the reverse flotation desiliconization of magnesite is the same as that in embodiment 1, and the method for utilizing the ore dressing backwater in the reverse flotation desilication of magnesite comprises the following steps:

[0046] (1) Introduce the ore dressing backwater into the regulating tank, and the height of the pool wall at the outflow end of the regulating pool is lower than that of the other three sides of the pool; the bottom of the regulating pool is equipped with a stirring device to prevent the precipitation of solid particles, causing excessive deposition at the bottom of the regulating pool, resulting in a regulating effect reduce.

[0047](2), ore dressing backwater enters the stirring reaction tank through the outflow end of the regulating tank, and adds a coagulant into the reaction tank and stirs. The coagulant is aluminum sulfate; the stirring is frequency stirring in stages: first, the stirrer st...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/52
Inventor 崔俊峰崔军么革齐国超崔毅崔薇薇何占高刘希洋
Owner 营口东吉科技(集团)有限公司
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