A Modifier-Roasting Combined Modification Method of Waste Residue Fluorogypsum
A modifier, fluorine gypsum technology, applied in the field of gypsum, can solve problems such as antibiotic abuse and environmental pollution, and achieve the effect of protecting the environment, strong mechanical properties, and optimizing the modification process
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Embodiment 1
[0022] Modifier-roasting method of the present invention combined modified waste residue fluorogypsum, comprising:
[0023] Heat-treat waste fluorine gypsum after hydrofluoric acid production at a temperature of 140°C for 1.5 hours; add 0.55 parts of steel slag, 0.9 parts of calcium carbide slag, and 0.42 parts of half water in parts by weight to 100 parts of heat-treated fluorogypsum Gypsum, 1.0 parts of sodium tripolyphosphate, 0.8 parts of potassium mirabilite, 1.7 parts of calcined alum, 1.6 parts of calcined dolomite, 0.9 parts of polycarboxylate modifier, 0.55 parts of waste mycelia modifier, stirred evenly and then stood still for 15 hours. Roasting, the roasting temperature is 230°C, the roasting time is 55min, and the aging is 7h;
[0024] Wherein, the polycarboxylic acid modifier is prepared according to the following steps: by weight, 24 parts of acrylic acid, 31 parts of methyl acrylate, 20.5 parts of sodium methacrylate and 7.5 parts of propylene polyoxyethylene e...
Embodiment 2
[0027] Modifier-roasting method of the present invention combined modified waste residue fluorogypsum, comprising:
[0028] Heat-treat waste fluorine gypsum after hydrofluoric acid production at a temperature of 130°C for 2 hours; add 0.2 parts of steel slag, 1.2 parts of calcium carbide slag, and 0.5 parts of semi-water to 100 parts of heat-treated fluorogypsum in parts by weight Gypsum, 0.5 parts of sodium tripolyphosphate, 0.2 parts of potassium mirabilite, 3 parts of calcined alum, 0.5 parts of calcined dolomite, 1.2 parts of polycarboxylate modifier, 0.8 parts of waste mycelium modifier, stirred evenly and then stood for 10 hours Roasting, the roasting temperature is 200°C, the roasting time is 80min, and aged for 5h;
[0029] Wherein, the polycarboxylic acid modifier is prepared according to the following steps: by weight, 20 parts of acrylic acid, 25 parts of methyl acrylate, 18 parts of sodium methacrylate and 5 parts of propylene polyoxyethylene ether are added to In...
Embodiment 3
[0032] Modifier-roasting method of the present invention combined modified waste residue fluorogypsum, comprising:
[0033] Heat-treat waste fluorine gypsum after hydrofluoric acid production at a temperature of 150°C for 1 hour; add 0.8 parts of steel slag, 0.5 parts of carbide slag, and 0.2 parts of half water in parts by weight to 100 parts of heat-treated fluorogypsum Gypsum, 1.5 parts of sodium tripolyphosphate, 1.2 parts of potassium mirabilite, 1 part of calcined alum, 2 parts of calcined dolomite, 0.2 parts of polycarboxylic acid modifier, 0.3 parts of waste mycelia modifier, stir well and let it stand for 20 hours before Roasting, the roasting temperature is 245°C, the roasting time is 30min, and aged for 10h;
[0034] Wherein, the polycarboxylic acid modifier is prepared according to the following steps: by weight, 25 parts of acrylic acid, 35 parts of methyl acrylate, 22 parts of sodium methacrylate and 8 parts of propylene polyoxyethylene ether are added to In water...
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