Method for producing industrial precipitation-type nano calcium carbonate
A nano-calcium carbonate, production method technology, applied in the direction of calcium carbonate/strontium/barium, nanotechnology, nanotechnology, etc., can solve the problems of unstable quality, large particle size of nano-calcium carbonate, agglomeration, etc., to avoid environmental pollution problems, The effect of reducing consumption and stable quality
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[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0018] A kind of production method of industrial precipitation type nano-calcium carbonate, comprises the steps:
[0019] (1) First place limestone with a calcium carbonate content greater than 80% and a particle size of 30-50mm in a dryer, then heat up to 105-110°C and dry for 2 hours;
[0020] (2) Put the dried limestone into the rotary kiln, preheat it through the preheater and heat it up for calcination. The maximum temperature of calcination is 1100-1200°C. After calcination, it will be cooled by cooler. When the temperature drops below 100°C Unload the generated calcium oxide;
[0021] (3) The flue gas discharged from the rotary kiln is sent to the washing tower through the induced draft fan, and the gas enters the steam-water separato...
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