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Thermal insulation filling body, and preparation method and application thereof
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A technology of filling body and thermal conductivity, which is applied in the field of heat insulation filling body and its preparation, to achieve the effect of reducing heat transmission, significant engineering significance, and low thermal conductivity
Active Publication Date: 2016-09-21
CENT SOUTH UNIV
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However, the research results on thermal insulation concrete at home and abroad are very rich.
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Embodiment 1
[0038] Design the composition of a heat-insulating filling body; its raw materials include No. 1 slurry and Al powder; the quality of the Al powder is 0.075% of the quality of the No. 1 slurry; the No. 1 slurry is composed of No. 1 raw material, minus Aqua and water composition; Described No. 1 raw material is made up of following components in mass percent:
[0041] The composition of the tailings is SiO 2 79.9wt%, Al 2 o 3 1.95wt%, other 18.15wt%;
[0042] The quality of the water reducer is 0.4% of the total mass of cement and fly ash; the water reducer is a polycarboxylic acid type high performance water reducer; its model is HSC.
[0043] The mass percent composition of water in the No. 1 slurry is 32%;
[0044] Stir the No. 1 raw material, water reducer and water according to the above design for 5 minutes, and then transport it to the underground...
Embodiment 2
[0048] Design the composition of a heat-insulating filling body; its raw materials include No. 1 slurry and Al powder; the quality of the Al powder is 0.01% of the quality of the No. 1 slurry; the No. 1 slurry is composed of No. 1 raw material, minus Aqua and water composition; Described No. 1 raw material is made up of following components in mass percent:
[0051] The composition of the tailings is SiO 2 78.1wt%, Al 2 o 3 2.34wt%, other 19.56wt%;
[0052] The quality of the water reducer is 0.2% of the total mass of cement and fly ash; the water reducer is a polycarboxylic acid type high performance water reducer; its model is HSC;
[0053] The mass percent composition of water in the No. 1 slurry is 35%;
[0054] After stirring the No. 1 raw material, water reducer and water according to the above design for 5 minutes, they are transported to the und...
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Abstract
The invention relates to a filling body, and a preparation method and an application thereof. The invention especially relates to a thermal insulation filling body, and a preparation method and an application thereof. The raw materials for the filling body provided by the invention comprise a No.1 slurry and Al powder. The mass of the Al powder is 0.01-0.075% of that of the No.1 slurry. The No.1 slurry is composed of a No.1 raw material, a water reducing agent and water. The No.1 raw material comprises, by mass, 10-15% of cement, 60-65% of mill tailings, 10-15% of fly ash, 10-15% of lime, and 3-5% of gypsum. The mass of the water reducing agent is 0.2-0.4% of the total mass of cement and fly ash. The preparation method comprises the following steps: the No.1 slurry is prepared; the Al powder with the formula amount is added into the No.1 slurry; and a reaction is allowed under stirring, such that a finished product is obtained. With the method provided by the invention, a porous filling body with relatively high thermal insulation coefficient and with certain strength can be prepared. The filling body facilitates downhole ground pressure control and geothermal control in deep well mining. The filling body has important engineering significance.
Description
technical field [0001] The invention relates to a filling body and its preparation method and application, in particular to a heat-insulating filling body and its preparation method and application. Background technique [0002] Due to the depletion of shallow surface mineral resources and the increasing demand for mineral resources in social development, deep mining will be the development direction of mines in the future in my country, and deep mining is facing the "three highs" of high ground stress, high well depth and high well temperature. High well temperature seriously deteriorates working conditions, threatens workers' health, greatly reduces labor efficiency, and does not meet the requirements of safe and efficient production. How to improve underground high temperature working conditions is a difficult problem for mining technology workers. At present, in deep well mining, the main method to solve high ground temperature is to cool down through traditional methods...
Claims
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Application Information
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