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Porous thermal insulation ceramic using gold copper mine tailings as raw material and preparation method thereof

A technology of gold-copper tailings and thermal insulation ceramics, which is applied in the direction of ceramic products, other household utensils, household utensils, etc. It can solve the problems that the quantity and quality cannot meet the needs of the rapid development of the construction industry, high quality requirements, and low development and utilization rates. , to achieve the effect of high strength, simple production process and low cost

Inactive Publication Date: 2014-07-23
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, with the increase of gold and copper production in my country, the deep processing capacity of gold and copper has also reached a certain scale, but the tailings powder produced by the gold and copper ore after selection has been discharged in large quantities, which has brought huge impacts on social development and environmental protection. pressure
For the development and utilization of tailings, it was mainly used in the production of cement and silicate products, glass, and ceramic admixtures in the past. The amount used is small and the quality requirements are high. The annual discharge of abandoned tailings and waste is as high as 800 million tons. For this huge number, its development utilization rate is very low
In addition, the replacement materials for the solid clay brick masonry part of the original masonry materials are difficult to meet the needs of the rapid development of the construction industry in terms of quantity and quality, which requires more new wall materials to supplement. For this reason, It is imminent to actively explore and develop new wall materials to replace high energy consumption materials such as solid clay bricks

Method used

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  • Porous thermal insulation ceramic using gold copper mine tailings as raw material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] A kind of porous thermal insulation ceramics with gold-copper tailings as the main raw material, its preparation method is as follows:

[0030] 1) Grind the gold-copper tailings, float glass powder, foaming agent, and additives respectively to pass through a 300-mesh sieve, and the sieve residue is controlled at 0.5wt%, and the weight percentage of each component is 75wt% of the gold-copper tailings, 10wt% float glass powder, 2wt% silicon carbide, 4.5wt% calcium carbonate, 0.5wt% activated carbon, 5wt% borax, and 3wt% soda ash are weighed and prepared, and the weighed raw material components are loaded into a ball mill Grinding and mixing were carried out in the tank, and the mixing time was 5 hours;

[0031] 2) The mixed material obtained in step 1) is molded with a molding pressure of 8 MPa to make a porous ceramic body (shaped into a plate);

[0032] 3) Put the formed green body on the refractory shed plate coated with aluminum hydroxide coating, put the two togethe...

Embodiment 2

[0036] A kind of porous thermal insulation ceramics with gold-copper tailings as the main raw material, its preparation method is as follows:

[0037] 1) Grind gold-copper tailings, float glass powder, foaming agent, additives, etc. to pass through a 250-mesh sieve, and control the sieve residue at 0.5wt%, according to the weight percentage of each component, it is 80.0wt% gold-copper tailings Ore, 10.0wt% float glass powder, 2.0wt% silicon carbide, 2.0wt% calcium carbonate, 1.0wt% activated carbon, 3.0wt% borax, 2.0wt% soda ash are weighed and prepared, and the weighed The raw material components are put into a ball mill tank for grinding and mixing, and the mixing time is 4 hours;

[0038] 2) Mold the mixture obtained in step 1) with a molding pressure of 14 MPa to make a porous ceramic body (molded into a block);

[0039] 3) Put the formed green body on the refractory shed plate coated with aluminum hydroxide coating, put the two together on the transmission roller of the ...

Embodiment 3

[0042] A kind of porous thermal insulation ceramics with gold-copper tailings as the main raw material, its preparation method is as follows:

[0043] 1) Grind gold-copper tailings, float glass powder, foaming agent, additives, etc. to pass through a 300-mesh sieve, and control the sieve residue at 0.5wt%, and the weight percentage of each component is 85.0wt% gold-copper tailings Mine, 8.0wt% float glass powder, 1.0wt% silicon carbide, 1.0wt% calcium carbonate, 1.0wt% activated carbon, 2.0wt% borax, 1.0wt% soda ash is weighed and prepared, and the weighed The raw material components are put into a ball mill tank for grinding and mixing, and the mixing time is 3 hours;

[0044] 2) Molding the mixture obtained in step 1) with a molding pressure of 18MPa to make a porous ceramic body;

[0045] 3) Put the formed green body on the refractory shed plate coated with aluminum hydroxide coating, put the two together on the transmission roller of the roller kiln of the firing equipmen...

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Abstract

The invention relates to a porous thermal insulation ceramic using gold copper mine tailings as a raw material and a preparation method thereof; the porous thermal insulation ceramic is prepared from the following raw materials by weight: 75-90wt% of gold copper mine tailings, 5-10wt% of float glass powder, 3-8wt% of a foaming agent and 2-8wt% of an additive; the porous thermal insulation ceramic material is prepared by the following processes: proportionally mixing well the gold copper mine tailings, the float glass powder, the foaming agent and the additive, then molding, and sintering; the density of the prepared gold copper mine tailing porous ceramic is in the range of 0.2-0.8g / cm<3>, the pore diameter is 1-6mm, the breaking strength is in the range of 0.5-6.0MPa, ,the thermal conductivity at room temperature is in the range of 0.04-0.12W / (K.m), and the porous thermal insulation ceramic has the advantages of high porosity, low density and high strength, and can be used as a wall thermal insulation material.

Description

technical field [0001] The invention relates to a porous thermal insulation ceramic with gold and copper tailings as the main raw material and a preparation method thereof, belonging to the technical field of porous building thermal insulation ceramics. Background technique [0002] Gold-copper tailings are powdery wastes discharged after gold-copper mining and sorting, including gold-copper mine tailings and processing plant tailings, among which mine tailings include the associated surrounding rocks that have been mined and low-grade materials that have been removed midway Ore; dressing plant tailings include mineral waste (tailings) discharged after mechanical washing of ores by a certain process, and these tailings are transported to tailings storage by pipelines. For this reason, under normal circumstances, when mining gold and copper mines, it is necessary to build a huge tailings pond that can accommodate the discharge of tailings during the entire production period o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00
Inventor 何峰谢峻林梅书霞金明芳刘小青
Owner WUHAN UNIV OF TECH
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