Method for synthesizing ultrafine calcium carbonate by utilizing carbide slag
A technology of ultra-fine calcium carbonate and carbide slag, which is applied to the removal of calcium carbonate/strontium/barium and solid waste, and can solve the problems of interface defects between base materials and fillers, insufficient utilization, and low calcium carbonate yield, and achieve Increase affinity and compatibility, highlight social and economic benefits, and improve resource utilization
Active Publication Date: 2012-07-25
SINOMA INT ENG +1
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The invention relates to a method for synthesizing ultrafine calcium carbonate by utilizing carbide slag. The method comprises the following steps of: (1) dissolving carbide slag: uniformly mixing carbide slag with water in a ratio of (1:6)-(1:20) to ensure that the carbide slag is fully dissolved into a turbid liquid, wherein the water content of the carbide slag is 20-45%; (2) carrying out impregnation reaction: adding ammonium chloride into the turbid liquid of the carbide slag for uniformly mixing, wherein the mass ratio of carbide slag to ammonium chloride is (1:0.7)-(1:2.5), after the impregnation reaction is finished, filtering and removing the slag to obtain a clear calcium chloride solution; and (3) carrying out carbonization reaction: adding a crystal form control agent into a calcium chloride solution for fully dissolving, introducing CO2 into the solution to carry out carbonization reaction till the pH (potential of Hydrogen) value of the reaction solution is less than or equal to 7 to obtain ultrafine calcium carbonate slurry, wherein the crystal form control agent is one or more than two mixtures of sulfate, chloride, citrate, sodium dodecyl benzene sulfonate, pyrophosphate, oleic acid, ammonium citrate, N-methyl pyrrolidone and maleic acid.
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Property | Measurement | Unit |
The average particle size | 0.0 | nm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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