Method for producing toothpaste additive from rice husk as raw material
A technology for additives and toothpaste, applied in the field of toothpaste additives, can solve the problems of less than 10% comprehensive utilization rate of rice husks, insignificant economic benefits, discarding rice husks, etc., and achieves good effects of removing tartar, promoting oral health, and good effect.
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Embodiment 1
[0031] The method for producing the toothpaste additive with rice husk as raw material, comprises the following steps:
[0032] (1) Remove impurities from the rice husk and place it in a closed oven at 600°C for high-temperature sintering and carbonization treatment for 2 hours to obtain rice husk charcoal;
[0033] (2) Add distilled water and chelating agent to the rice husk charcoal obtained in step (1), soak at 50°C for 2 hours, filter and dry for later use;
[0034] Described chelating agent is nitrilotriacetic acid;
[0035] The addition of described distilled water is 15 times of rice husk charcoal weight;
[0036] The addition of described chelating agent is 0.3% of rice husk charcoal weight.
[0037] (3) Put the rice husk charcoal obtained in step (2) into a steam environment at 170°C for activation treatment for 5 hours; then dry it at 80°C;
[0038] (4) Grinding the dried rice husk charcoal in step (3) with a crushing device until the particle size is 60 microns t...
Embodiment 2
[0044] The method for producing the toothpaste additive with rice husk as raw material, comprises the following steps:
[0045] (1) Put the rice husk in a closed oven at 700°C after removing impurities, and perform high-temperature sintering and carbonization treatment for 1 hour to obtain rice husk charcoal;
[0046] (2) Add distilled water and chelating agent to the rice husk charcoal obtained in step (1), soak at 40°C for 3 hours, filter and dry for later use;
[0047] The chelating agent is composed of EDTA-2NA and amino trimethylene phosphonic acid in a weight ratio of 1:1;
[0048] The addition of described distilled water is 20 times of rice husk charcoal weight;
[0049] The addition of described chelating agent is 0.4% of rice husk charcoal weight.
[0050](3) Put the rice husk charcoal obtained in step (2) into a steam environment at 180°C for activation treatment for 4 hours; then dry it at 85°C;
[0051] (4) Grinding the dried rice husk charcoal in step (3) with...
Embodiment 3
[0057] The method for producing the toothpaste additive with rice husk as raw material, comprises the following steps:
[0058] (1) Remove impurities from the rice husk and place it in a closed oven at 650°C for high-temperature sintering and carbonization for 1.5 hours to obtain rice husk charcoal;
[0059] (2) Add distilled water and chelating agent to the rice husk charcoal obtained in step (1), soak at 35°C for 4 hours, filter and dry for later use;
[0060] Described chelating agent is amino trimethylene phosphonic acid;
[0061] The addition of described distilled water is 10 times of rice husk charcoal weight;
[0062] The addition of described chelating agent is 0.2% of rice husk charcoal weight.
[0063] (3) Put the rice husk charcoal obtained in step (2) into a steam environment at 200°C for 3 hours of activation treatment; then dry it at 90°C;
[0064] (4) Grinding the dried rice husk charcoal in step (3) with a crushing equipment until the particle size is 30 mi...
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