Method for preparing water glass by utilizing purified iron tailings

A technology of iron tailings and water glass, which is applied in the direction of solid separation, etc., can solve the problems of waste of resources, environment and pollution, and achieve the effects of avoiding environmental pollution, simple process, harmless disposal and resource utilization

Inactive Publication Date: 2021-04-20
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing water glass using purified iron tailings to solve the serious waste of resources and environmental pollution caused by the massive discharge of iron tailings

Method used

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  • Method for preparing water glass by utilizing purified iron tailings
  • Method for preparing water glass by utilizing purified iron tailings

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The iron tailings are subjected to cyclone classification treatment to obtain grit and overflow products. Grit products are fed into a Φ1.5m spiral chute for roughing, rougher tailings are fed into a Φ1.5m spiral chute for sweeping; overflow products are sent to a drum magnetic separator with an entry field strength of 150mT for weak magnetic separation, The weak magnetic tailings are subjected to strong magnetic separation by a drum magnetic separator with an entry field strength of 1000mT; the scavenging tailings and strong magnetic tailings are combined into silicon-rich raw materials. At this time, SiO in the silicon-rich raw materials 2 The mass percentage composition is 86.68%. The silicon-rich raw material is pickled with a mass concentration of 10% to remove acid-soluble impurities such as Ca, Mg, Al and Fe in the silicon-rich raw material, and then washed with water (the washing liquid is fed into the recovery treatment system), and dried to obtain Prepare raw...

Embodiment 2

[0041] The iron tailings are subjected to cyclone classification treatment to obtain grit and overflow products. The grit products are fed into the Φ1.2m spiral chute for roughing, and the rougher tailings are fed into the Φ1.2m spiral chute for sweeping; the overflow products are sent to the drum magnetic separator with an entry field strength of 140mT for weak magnetic separation. The weak magnetic tailings are sent to the drum magnetic separator with an entry field strength of 800mT for strong magnetic separation; the scavenging tailings and strong magnetic tailings are combined into silicon-rich raw materials. At this time, SiO in the silicon-rich raw materials 2 The mass percent composition is 83.47%. The silicon-rich raw material is pickled with a mass concentration of 15% to remove acid-soluble impurities such as Ca, Mg, Al and Fe in the silicon-rich raw material, then washed with water (the washing liquid is fed into the recovery treatment system), and dried to obtain ...

Embodiment 3

[0044] The iron tailings are subjected to cyclone classification treatment to obtain grit and overflow products. The grit products are fed into the Φ1.5m spiral chute for roughing, and the rougher tailings are fed into the Φ1.5m spiral chute for sweeping; the overflow products are sent to the drum magnetic separator with an entry field strength of 140mT for weak magnetic separation. The weak magnetic tailings are sent to the drum magnetic separator with an entry field strength of 850mT for strong magnetic separation; the scavenging tailings and strong magnetic tailings are combined into silicon-rich raw materials. At this time, SiO in the silicon-rich raw materials 2 The mass percent composition is 84.52%. Pickling the silicon-rich raw material with an acid mass concentration of 10% to remove acid-soluble impurities such as Ca, Mg, Al and Fe in the silicon-rich raw material, then washing with water (the washing liquid is fed into the recovery treatment system), and drying to o...

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Abstract

The invention provides a method for preparing water glass by utilizing purified iron tailings, and belongs to the technical field of water glass, aiming at solving the problems of serious resource waste and environmental pollution caused by discharge of a large amount of iron tailings. According to the technical scheme of the method for preparing the water glass by utilizing the purified iron tailings, firstly, silicon-rich raw materials are separated from the iron tailings, then the silicon-rich raw materials are subjected to acid leaching, acid-soluble impurities in the silicon-rich raw materials are removed, then washing and drying are conducted, quartz sand raw materials are obtained, finally, the quartz sand raw materials and an alkaline solution are added into a reaction kettle for a reaction, cooling and filtering are conducted after the reaction is completed, and concentrating is carried out on the liquid after filtration to obtain a water glass product. According to the method, a valuable component SiO<2> in the iron tailings is separated out and then reacts with the alkaline solution, and the liquid water glass with the modulus of 2.5-3.5 is prepared; and according to the method, the purified iron tailings are used for preparing the high-added-value product sodium silicate, so that harmless treatment and resource utilization of the iron tailings are achieved, and the economic and social benefits are remarkable.

Description

technical field [0001] The invention belongs to the technical field of water glass, in particular to a method for preparing water glass from purified iron tailings. Background technique [0002] Iron tailings is the waste residue discharged after the iron ore concentrate is selected in the concentrator, and it is one of the main industrial solid wastes. With the rapid development of the iron and steel industry, the mining volume of iron ore continues to increase, and iron tailings account for an increasing proportion of industrial solid waste. Due to the small particle size, light weight and large surface area of ​​the tailings, it is easy to cause flow and collapse when stacked, and the tailings dust is driven by the wind to fly around, which not only causes a waste of mineral resources, but also occupies a large amount of land and causes serious environmental pollution. Therefore, the research on the comprehensive utilization of iron tailings is very urgent. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
Inventor 林岩牛文杰周丽郭客李宏金磊高源徐小革
Owner ANSTEEL GRP MINING CO LTD
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