Method of producing nano-calcium carbonate
A nano-calcium carbonate and carbon dioxide technology, applied in nano-structure manufacturing, calcium carbonate/strontium/barium, nanotechnology, etc., can solve problems such as difficult promotion, uneven distribution, unstable performance, etc., and achieve obvious economic benefits and technological methods Simple, good product quality and good results
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Embodiment 1
[0019] Prepare 500 milliliters of milk of lime solution with a concentration of 10 grams of calcium oxide / 100 milliliters of water, stir and digest it for 30 minutes, then pass a mixed gas of carbon dioxide / air containing 30% carbon dioxide under stirring for carbonization reaction, and the ventilation rate is 10 liters / min, the carbonization process is controlled by circulating cooling water, the temperature of the reaction system is 35°C, the pH of the solution drops to 7.0 after 1 hour of reaction, the carbonization reaction is stopped, the slurry is filtered, and the filtered slurry is injected into the adjusted X channel control Cracking, emulsification, dispersion and synthesis are carried out in the nano collider of calcium carbonate nanoparticles 20-40, and finally the nano calcium carbonate is dissolved at 100°C and spray-dried. This product is used in food, medicine, beverage and feed industries.
Embodiment 2
[0021] Add raw material carbon (calcium oxide) or calcium hydroxide in water to prepare 8-12 suspension, stir well and in the state of stirring, pass in carbon dioxide / air containing 28-32% carbon dioxide / air warm gas (its composition Similar to the kiln gas composition of the lime kiln) for carbonization reaction, the ventilation rate is 5-8 liters / minute, the absorption rate constant of carbon dioxide is controlled to be 1-2 / second, and the temperature of the entire carbonization process is controlled at 28-32°C until When the pH of the suspension drops to 6.8-7.2, stop the reaction. Filtrate the suspension into the debugged nano-collider for cracking, emulsification, dispersion, and synthesis into nano-calcium carbonate. Make 20-40, 60-80 nanometer calcium carbonate solution according to the needs, after the nano-collider treatment, the calcium carbonate solution is spray-dried to get the nano-calcium carbonate product, which can be widely used in rubber, paint, plastic, co...
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