Preparation method of nano calcium carbonate with low viscocity and high thixotropic property
A nano-calcium carbonate, high thixotropic technology, applied in nanotechnology, non-polymer adhesive additives, dyed low molecular organic compound treatment and other directions, can solve the problems of poor dispersion, low viscosity, high viscosity, achieve low viscosity, Great thixotropy, cost reduction effect
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[0015] Example 1:
[0016] The calcium carbonate ore is cleaned and then calcined at 1000°C. After the product is purified, digested and aged, water is added to prepare a 10% calcium hydroxide slurry, which is transferred to the membrane dispersion carbonization reactor, and the relative calcium hydroxide is added Sucrose 0.5% by weight of calcium hydroxide in suspension. Inject a mixture of carbon dioxide and air with a volume fraction of carbon dioxide of 30% for carbonization synthesis at 17°C by high-gravity method. When the pH drops to 6.8, continue to ventilate for 10 minutes to obtain nano-calcium carbonate slurry. Select a three-hour meter per 100ml A nano calcium carbonate slurry with an apparent sedimentation volume of 85-99ml. Water was added to adjust the weight fraction of the nano calcium carbonate slurry to 10%, and 1000 g of the nano calcium carbonate slurry was taken, and the temperature was raised to 80° C. and stirred for 10 minutes. Weigh 3g of carboxysteari...
Example Embodiment
[0017] Example 2:
[0018] The calcium carbonate ore is cleaned and then calcined at 1000°C. After the product is purified, digested and aged, water is added to prepare a 10% calcium hydroxide slurry, which is transferred to the membrane dispersion carbonization reactor, and the relative calcium hydroxide is added 0.5% beet sugar by weight of calcium hydroxide in suspension. A mixture of carbon dioxide and air with a volume fraction of carbon dioxide of 30% is introduced at 17℃ for carbonization synthesis by membrane dispersion method. When the pH drops to 6.8, continue to ventilate for 10 minutes to obtain nano-calcium carbonate slurry. Select a three-hour meter per 100ml A nano calcium carbonate slurry with an apparent sedimentation volume of 85-99ml. Water was added to adjust the weight fraction of the nano calcium carbonate slurry to 10%, and 1000 g of the nano calcium carbonate slurry was taken, and the temperature was raised to 80° C. and stirred for 10 minutes. Weigh 1.5...
Example Embodiment
[0019] Example 3:
[0020] The calcium carbonate ore is cleaned and then calcined at 1000°C. After the product is purified, digested and aged, water is added to prepare a 10% calcium hydroxide slurry, which is transferred to the membrane dispersion carbonization reactor, and the relative calcium hydroxide is added 0.5% maltose based on the weight of calcium hydroxide in the suspension. A mixture of carbon dioxide and air with a volume fraction of carbon dioxide of 30% is introduced at 17℃ for carbonization synthesis by membrane dispersion method. When the pH drops to 6.8, continue to ventilate for 10 minutes to obtain nano-calcium carbonate slurry. Select a three-hour meter per 100ml A nano calcium carbonate slurry with an apparent sedimentation volume of 85-99ml. Water was added to adjust the weight fraction of the nano calcium carbonate slurry to 10%, and 1000 g of the nano calcium carbonate slurry was taken, and the temperature was raised to 80° C. and stirred for 10 minutes....
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