Method for preparing foam ceramic heat-insulation board by utilizing gold ore tailings
A technology of gold mine tailings and foam ceramics, which is applied in the field of building materials, can solve problems such as ecological environment impact, groundwater hazards, and environmental pollution, and achieve the effects of adjustable porosity, uniform pores, and simple preparation process
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Embodiment 1
[0028] A method for preparing foamed ceramic insulation boards using gold mine tailings, prepared from the following components in parts by weight: gold mine tailings 40wt%, china stone 5wt%, feldspar 20wt%, clay 10wt%, sandstone 15wt% , gangue 10wt%, plus Fe 2 o 3 1.5wt%, plus 0.3wt% SiC, plus 0.8wt% grinding aid. The raw materials are ball milled (300 mesh), dried and molded, and then fired at 1185°C for 20 minutes. The pore size of the obtained sample is uniform, and the thermal insulation coefficient is 0.057W / (m·K) under the temperature difference of 35°C on the hot plate and 15°C on the cold plate.
Embodiment 2
[0030] A method for preparing foamed ceramic insulation boards using gold ore tailings, prepared from the following components in parts by weight: gold ore tailings 40wt%, china stone 5wt%, feldspar 20wt%, clay 10wt%, sandstone 15 wt %, coal gangue 10 wt %, plus Fe 2 o 3 1.0wt%, plus 0.5wt% of SiC, plus 0.8wt% of grinding aid. The raw materials are ball milled (300 mesh), dried and shaped, and then fired at 1180°C for 15 minutes. The pore size of the obtained sample is uniform, and the thermal insulation coefficient is 0.063W / (m·K) under the temperature difference of 35°C on the hot plate and 15°C on the cold plate.
Embodiment 3
[0032] A method for preparing foamed ceramic insulation boards using gold mine tailings is prepared from the following components in parts by weight: 40 wt % of gold mine tailings, 8 wt % of china stone, 15 wt % of feldspar, 15 wt % of clay, Sandstone 12 wt %, coal gangue 10 wt %, Fe 2 o 3 0.5wt%, add SiC1.2wt%, add grinding aid 1.0wt%. The raw materials are ball milled (300 mesh), dried and molded, and then fired at 1190°C for 10 minutes. The pore size of the obtained sample is uniform, and the thermal insulation coefficient is 0.059W / (m·K) under the temperature difference of 35°C on the hot plate and 15°C on the cold plate.
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