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Sintering flux for solid waste sintered porous heat insulation sheets, and preparation method and application thereof

A technology for solid waste and insulation boards, which is applied in the field of sintering flux and preparation of solid waste sintered porous insulation boards, which can solve the problems of reasonable compatibility of fluxes and high firing temperature without consideration, and achieve good physical and mechanical properties , Lower firing temperature, and the effect of reducing waste emissions

Active Publication Date: 2015-07-15
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese Patent No. ZL201210190895.0 discloses a foamed ceramic material and its preparation method. The utilization rate of tailings can reach 65-85%. The flux is sodium carbonate, calcium fluoride, and sodium phosphate. At least one, but the puffing temperature, that is, the firing temperature is 1225-1300°C, and the firing temperature is relatively high
To sum up, the above-mentioned invention patent specification does not take into account the reasonable compatibility of fluxes, and does not propose a high-volume tailings sintering porous flux that is suitable for the existing production process and production conditions from the perspective of high-volume tailings utilization and low-temperature sintering. Firing flux for thermal insulation board and preparation method thereof

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  • Sintering flux for solid waste sintered porous heat insulation sheets, and preparation method and application thereof

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Embodiment 1

[0021] A kind of sintering flux for solid waste sintered porous insulation board, composed of rapid fluxing component, stable fluxing component and gentle fluxing component; the mass ratio of rapid fluxing component and stable fluxing component is 2:1, the mass ratio of gentle fluxing component to stable fluxing component is 1:1; the rapid fluxing component is borax, the stable fluxing component is glass powder, and the gentle fluxing component is pearl The mixture of rock and feldspar, the mass ratio of perlite and feldspar is 1:1.

[0022] The massfraction of each chemical composition in described borax is: Na 2 O 16%, B 2 o 3 36%, H 2 O 48%.

[0023] The mass fraction of each chemical composition in the glass powder is: SiO 2 73%, Al 2 o 3 9%, Na 2 O 8%, CaO 9%, K 2 O 1%.

[0024]The preparation method of the sintering flux for the solid waste sintered porous insulation board includes the following steps: ① drying and grinding the borax to obtain the fast fluxi...

Embodiment 2

[0029] A kind of sintering flux for solid waste sintered porous insulation board, composed of rapid fluxing component, stable fluxing component and gentle fluxing component; the mass ratio of rapid fluxing component and stable fluxing component is 1:1, the mass ratio of the smooth fluxing component to the stable fluxing component is 2:1; the rapid fluxing component is borax, the stable fluxing component is glass powder, and the gentle fluxing component is pearl rock.

[0030] The massfraction of each chemical composition in described borax is: Na 2 O 15%, B 2 o 3 37%, H 2 O 48%.

[0031] The mass fraction of each chemical composition in the glass powder is: SiO 2 70%, Al 2 o 3 6%, Na 2 O 16%, CaO 6%, K 2 O 2%.

[0032] The preparation method of the sintering flux for the solid waste sintered porous insulation board includes the following steps: ① drying and grinding the borax to obtain the fast fluxing component after reaching the condition that the 80 μm sieve is...

Embodiment 3

[0037] A kind of sintering flux for solid waste sintered porous insulation board, composed of rapid fluxing component, stable fluxing component and gentle fluxing component; the mass ratio of rapid fluxing component and stable fluxing component is 1:1, the mass ratio of the smooth fluxing component and the stable fluxing component is 1:1; the rapid fluxing component is borax, the stable fluxing component is glass frit, and the gentle fluxing component is long stone.

[0038] The massfraction of each chemical composition in described borax is: Na 2 O 17%, B 2 o 3 37%, H 2 O 46%.

[0039] The mass fraction of each chemical composition in the glass powder is: SiO 2 70%, Al 2 o 3 3%, Na 2 O 16%, CaO 9%, K 2 O 2%.

[0040] The preparation method of the sintering flux for the solid waste sintered porous insulation board includes the following steps: ① drying and grinding the borax to obtain the fast fluxing component after reaching the condition that the 80 μm sieve is ...

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Abstract

The invention relates to a sintering flux for solid waste sintered porous heat insulation sheets, and a preparation method and an application thereof. The sintering flux comprises a rapid fluxing component, a stable fluxing component and a mild fluxing component; a mass ratio of the rapid fluxing component to the stable fluxing component is 0.5-2:1, and a mass ratio of the mild fluxing component to the stable fluxing component is 0.5-2:1; and the rapid fluxing component is borax, the stable fluxing component is glass powder, and the mild fluxing component is one or two of perlite and feldspar. The invention also provides the preparation method and the application of the sintering flux for solid waste sintered porous heat insulation sheets. The flux is added in the sintering process of the sintering flux for solid waste sintered porous heat insulation sheets to decrease the sintering temperature by 50-150DEG C, a large amount of waste mine tailings and industrial waste residues are used, and the utilization rate reaches 80%, so environment protection is facilitated, resources are saved, and waste discharge is reduced.

Description

technical field [0001] The invention belongs to the technical field of solid waste utilization, and relates to a firing flux for solid waste sintered porous insulation boards, a preparation method and application. Background technique [0002] Tailings are the waste after beneficiation and the main component of industrial solid waste. Over 10 billion tons of metal mines, non-metal mines, coal, clay, etc. are mined every year by countries all over the world, and the amount of tailings discharged is about 5 billion tons. According to incomplete statistics, there are more than 150 kinds of minerals discovered in my country at present, and the development and establishment More than 8,000 mines have been built, with a cumulative production of 5.97 billion tons of tailings, covering an area of ​​80,000 hm 2 above, and is still growing at a rate of 300 million tons per year. For a long time, most of the tailings have been stacked in the open air, which not only occupies a large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B35/63B09B3/00
Inventor 王慧贤仝玉萍崔欣马军涛陈希李克亮陈爱玖霍洪媛赵玉青
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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