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Method of preparing inorganic polymer poly(iron silicate) flocculating agent from secondary copper slag

A technology of inorganic polymers and polysilicate iron, applied in the field of solid waste utilization research, to achieve the effect of increasing the added value of utilization, good social and economic benefits, and reducing environmental pollution

Pending Publication Date: 2017-09-05
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, in the prior art, there is no method for preparing inorganic polymer polysilicate ferric silicate flocculant by using copper slag secondary slag as silicon source and rolling steel sheet as iron source

Method used

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  • Method of preparing inorganic polymer poly(iron silicate) flocculating agent from secondary copper slag

Examples

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Effect test

Embodiment 1

[0033] refer to figure 1 , the present embodiment prepares the inorganic polymer polysilicate iron flocculant according to the following steps:

[0034] Step (1): Add copper slag secondary slag to a concentration of 3m o In the l / L sulfuric acid solution, the mass ratio of copper slag secondary slag and sulfuric acid solution is 1:5. After stirring the copper slag secondary slag and sulfuric acid mixed solution at room temperature for 2 hours, let it stand for 1 hour, and take the supernatant , adding water to adjust the pH to 1.5 to obtain a polysilicic acid solution.

[0035] Step (2): After crushing the rolled steel sheet to less than 1mm in the crushing device, place it in a container with a stirring device and add an industrial sulfuric acid solution with a concentration of 8mol / L, wherein the mass ratio of the rolled steel sheet to the sulfuric acid solution is The ratio is 1:4; Oxygen is passed through and the mixed solution of rolled steel sheet and sulfuric acid is ...

Embodiment 2

[0039] refer to figure 1 , the present embodiment prepares the inorganic polymer polysilicate iron flocculant according to the following steps:

[0040] Step (1): Add the secondary slag of copper slag to the sulfuric acid solution with a concentration of 2mol / L, the mass ratio of the secondary slag of copper slag and the sulfuric acid solution is 1:7, stir the secondary slag of copper slag and sulfuric acid at room temperature After mixing the solution for 2 hours, let it stand for 2 hours, take the supernatant, add water to adjust the pH value to 1, and obtain a polysilicic acid solution.

[0041]Step (2): After crushing the rolled steel sheet to less than 1mm in the crushing device, place it in a container with a stirring device and add an industrial sulfuric acid solution with a concentration of 8mol / L, wherein the mass ratio of the rolled steel sheet to the sulfuric acid solution is The ratio is 1:4; the mixed solution of rolled steel sheet and sulfuric acid is stirred by...

Embodiment 3

[0045] refer to figure 1 , the present embodiment prepares the inorganic polymer polysilicate iron flocculant according to the following steps:

[0046] Step (1): Add the copper slag secondary slag to the sulfuric acid solution with a concentration of 3mol / L, the mass ratio of the copper slag secondary slag and the sulfuric acid solution is 1:5, stir the copper slag secondary slag and sulfuric acid solution at room temperature After mixing the solution for 2 hours, let it stand for 3 hours, take the supernatant, add water to adjust the pH value to 2, and obtain a polysilicic acid solution.

[0047] Step (2): After crushing the rolled steel sheet to less than 1mm in the crushing device, place it in a container with a stirring device and add an industrial sulfuric acid solution with a concentration of 8mol / L, wherein the mass ratio of the rolled steel sheet to the sulfuric acid solution is The ratio is 1:4; Oxygen is introduced and the mixed solution of rolled steel sheet and s...

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Abstract

The invention provides a method for preparing inorganic polymer polysilicate iron flocculant from the secondary slag of copper slag, specifically, the secondary slag of copper slag is heated, stirred, allowed to stand, and the pH value is adjusted under the action of acid to obtain poly Silicic acid solution; Fe2(SO4)3 solution is obtained by crushing, stirring, reacting, filtering and other steps of rolled steel sheet; mixing and reacting Fe2(SO4)3 solution and polysilicic acid solution to obtain inorganic polymer polysilicate iron flocculant. The invention adopts the secondary tailing slag and can be used as the silicon source of the polysilicate iron flocculant. The rolled steel sheet is selected as the iron source, which has the characteristics of high iron content, less impurity elements, and large production volume, which can meet the requirements of polysilicate iron flocculant production.

Description

technical field [0001] The invention relates to the research field of solid waste utilization in nonferrous and ferrous metallurgy industries, and more specifically, the invention relates to a method for preparing an inorganic polymer polysilicate ferric silicate flocculant from copper slag secondary slag. Background technique [0002] my country's copper output ranks first in the world, and more than 95% of copper is produced through pyrometallurgy, which produces a large amount of copper slag. Copper slag is rich in Fe, Si and Zn, and can be used as a secondary resource to produce products containing iron, silicon and zinc. Through research, it is found that copper slag can be regarded as FeO-SiO 2 -CaO ternary system, the main composition is fayalite (Fe 2 SiO 4 ) and magnetite (Fe 3 o 4 ) and a glass body composed of some impurities. A large amount of iron-rich copper slag is piled up, which not only causes a great waste of resources, but also occupies land, pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52B09B3/00
CPCC02F1/5245B09B3/00
Inventor 丁银贵刘占华王欣薛逊王岩曹志成吴道洪陈文亮
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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