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Water treatment ceramsite based on cobalt smelting waste slag and preparation method thereof

A technology of water treatment and waste residue, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, ceramic products, etc., to achieve the effects of wide sources, low cost, and simple and easy preparation methods

Active Publication Date: 2019-11-22
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a water treatment ceramsite based on cobalt smelting waste slag and its preparation method, which mainly solves the problems of harmless treatment and resource utilization of cobalt smelting waste slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The main components of cobalt smelting waste residue from a company are as follows.

[0024] Element SiO 2

Fe co Al 2 o 3

CaO Na 2 o

Content (wt.%) 63.5 4.1 0.3 7.1 8.3 0.3

[0025] Cobalt smelting waste residue is dried and ground into dry powder with a particle size of less than 75 microns.

[0026] A real estate silica, the main component is SiO 2 , silica SiO 2 The content is 95.3 wt.%, dried and ground into dry powder, the particle size is less than 75 microns.

[0027] Sodium carbonate is used as a sintering agent, dried and ground into a dry powder with a particle size of less than 75 microns.

[0028] Dry and crushed rural waste straw was used as the pore-forming agent, with a moisture content of less than 20 wt.% and a particle size of less than 1 mm.

[0029] According to the raw material ratio of 55 wt.% cobalt smelting waste residue, 30 wt.% silica, 7 wt.% sodium carbonate, and 8 wt.% pore-forming agent, ...

Embodiment 2

[0036] The main components of cobalt smelting waste residue from a company are as follows.

[0037] Element SiO 2

[0038] Cobalt smelting waste residue is dried and ground into dry powder with a particle size of less than 75 microns.

[0039] A real estate silica, the main component is SiO 2 , silica SiO 2 The content is 95.3 wt.%, dried and ground into dry powder, the particle size is less than 75 microns.

[0040] Sodium carbonate is used as a sintering agent, dried and ground into a dry powder with a particle size of less than 75 microns.

[0041] Dry and crushed rural waste straw was used as the pore-forming agent, with a moisture content of less than 20 wt.% and a particle size of less than 1 mm.

[0042] According to the raw material ratio of 50 wt.% cobalt smelting waste residue, 36 wt.% silica, 6 wt.% sodium carbonate, and 8 wt.% pore-forming agent, the above powders were weighed, mixed and stirred evenly, and ceramsite powder was obtained .

[0043]...

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Abstract

The invention discloses a cobalt-smelting waste based water treatment ceramsite and a preparation method thereof, and belongs to the technical field of resource utilization and harmless treatment of smelting wastes. The cobalt-smelting waste based water treatment ceramsite is prepared through the raw materials including cobalt-smelting waste, silica and an additive. The preparation method of the ceramsite comprises the following steps: drying and crushing the cobalt-smelting waste, the silica and the additive into dry powder; weighting cobalt-smelting waste powder, silica powder and additive powder based on the mixing ratio; uniformly mixing and stirring and then conveying to a balling pelletizing device to pelletize and form; and then drying and roasting to obtain the ceramsite product. The ceramsite is rough in surface, and porous in inside; the ceramsite can be used as a filtering material for water treatment. According to the preparation method, the resource utilization of the cobalt-smelting wastes is achieved, so that the method is high in economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of resource utilization and harmless treatment of smelting slag, in particular to a water treatment ceramsite based on cobalt smelting waste slag and a preparation method thereof. Background technique [0002] The current cobalt smelting enterprises all adopt the acid leaching process to treat the water cobalt ore, which will produce a large amount of cobalt smelting waste residue. At present, most of the cobalt smelting slag produced is landfilled or stockpiled. On the one hand, it occupies a large amount of space. On the other hand, because the cobalt smelting slag contains active heavy metal components, if it is not managed properly, it will easily cause environmental pollution. Cobalt smelting waste residues are mainly composed of silica, hydrated iron oxides, alumina, and calcium oxide. At present, the treatment of cobalt smelting waste residues is mainly stockpiling or landfilling. The environmental p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B33/138C04B33/16C04B33/32C02F3/10
CPCC02F3/104C02F3/107C04B33/138C04B33/16C04B33/32C04B38/0665C04B2235/3201C04B38/0074C04B38/009Y02P40/60Y02W10/10
Inventor 靖青秀黄晓东张呈熙梁卫春付海阔
Owner JIANGXI UNIV OF SCI & TECH