Process for preparing nano calcium sulfate
A nano-calcium sulfate and preparation process technology, applied in the field of preparation of nano-calcium sulfate, can solve the problems of low added value, incapable of industrial production, and high cost, and achieve the effect of reducing the preparation cost and reducing the preparation cost
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[0031] Preparation raw materials: the concentration of the ammonium sulfate solution from the iron oxide pigment preparation process is 25%; the industrial lime calcium oxide, the calcium oxide content is greater than 95%.
[0032] 1. Take 210 kg of calcium oxide, add 80°C hot water, and prepare 1333 kg of calcium hydroxide emulsion with a calcium oxide content of 15%.
[0033] 2. Filter with a 200 mesh screen to separate the coarse particles of impurities in the calcium hydroxide emulsion to obtain a refined calcium hydroxide emulsion.
[0034] 3. Take 3% of the amount of calcium oxide and mix the sodium stearate and calcium oxide slurry to obtain a mixed slurry system containing the variable resistance agent.
[0035] 4. Take 1886 kilograms of ammonium sulfate solution with a concentration of 25%, add it to the calcium hydroxide slurry containing the resistance variable agent, and stir for 2 hours at room temperature. After the reaction is completed, nano calcium sulfate slurry and d...
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