Method for preparing easy-to-disperse waterborne bismuth oxychloride powder and bismuth oxychloride pearlescent slurry through ultrasonic reaction
A bismuth oxychloride and easy-to-dispersion technology, which is applied in chemical instruments and methods, inorganic chemistry, bismuth compounds, etc., can solve the problems of poor dispersion and easy aggregation, complicated process, and uneven particle size distribution, so as to achieve the goal of not easy to aggregate, and the product Effect of high purity and improved crystal weather resistance
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[0030] Example 1
[0031] Take 20L of bismuth nitrate aqueous solution with a mass concentration of 15%, add 1L of dilute hydrochloric acid with a mass concentration of 15% and a sodium chloride solution with a mass concentration of 15% to obtain solution A; add 30L of deionized water to a 50L reactor to Adjust the pH to 4.0 by dilute hydrochloric acid with a mass concentration of 15%, heat it to 60°C, and use 30kHz ultrasonic irradiation; add 30ml of nano-silica dispersion with a mass concentration of 20% to the reactor; then add to the reactor Drop the solution A obtained in step (1) at a feed rate of 0.12L / h and react for 10 minutes; adjust the feed rate of adding the solution A obtained in step (1) to the reactor to 0.56L / h and react for 20 minutes; then adjust the feed The rate is 1.12L / h, the reaction is 40 minutes; the feeding rate is adjusted to 1.6L / h, and the reaction is 60 minutes; the feeding rate is adjusted to 2.8L / h, and the reaction is 90 minutes; the feeding rate...
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[0032] Example 2
[0033] Take 20L of bismuth nitrate aqueous solution with a mass concentration of 13%, add 1L of dilute hydrochloric acid with a mass concentration of 15% and a sodium chloride solution with a mass concentration of 15% to obtain solution A; add 30L of deionized water to a 50L reactor to Adjust the pH to 4.0 by dilute hydrochloric acid with a mass concentration of 15%, heat it to 60°C, and use 30kHz ultrasonic irradiation; add 30ml of nano-silica dispersion with a mass concentration of 20% to the reactor; then add to the reactor Drop the solution A obtained in step (1) at a feed rate of 0.1L / h, and react for 15 minutes; adjust the feed rate of adding the solution A obtained in step (1) to the reactor to 0.5L / h, and react for 30 minutes; then adjust the feed The rate is 1L / h, the reaction is 40 minutes; the feeding rate is adjusted to 1.5L / h, and the reaction is 65 minutes; the feeding rate is adjusted to 2.5L / h for 95 minutes; the feeding rate is adjusted to 3.8L...
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