A kind of preparation method of potassium titanate
A technology of potassium titanate and potassium bicarbonate, applied in directions such as titanate, alkali metal titanate, chemical instruments and methods, can solve the problems of low production yield, high production cost, difficult operation and the like, and achieve production cost The effect of low, high production yield and convenient operation
Active Publication Date: 2022-03-29
ZHANGJIAGANG OTSUKA CHEM +1
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[0004] The synthesis method of potassium titanate disclosed in the existing patent has complicated process, difficult operation, low production yield, high production cost and certain pollution to the environment
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[0017] Anatase titanium dioxide and potassium carbonate with a titanium-containing raw material content of more than 97% are mixed according to the ratio of Ti / K2=2.0, and the mixed raw materials are ground and pulverized. The pulverized raw materials are put into a high-temperature furnace for calcination, the calcination temperature is set at 900°C, the heating rate is 5°C / min, calcined for 4 hours, and then the temperature is lowered to room temperature at a rate of 3°C / min. Crusher for crushing. The pulverized material is then added with titanium-containing raw material (ratio: 1:1.5) and potassium phosphate (3%) for mixing and pulverization. The pulverized material is put into a high-temperature furnace for calcination, the calcination temperature is set at 1000° C., and the calcination time is 4 hours. After the fired material is cooled, it is crushed and classified to obtain a potassium titanate powder.
[0018] For the SEM photos and XRD patterns of the product, see ...
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The present application discloses a preparation method of potassium titanate, which includes the following steps in turn: mixing titanium-containing raw materials and potassium-containing raw materials according to the ratio of Ti / K2=1.5-3, grinding and pulverizing after mixing, and then putting them into a high-temperature furnace For calcination, set the calcination temperature to 800-1300°C, heat up at a rate of 5-10°C / min, calcinate for 4-8 hours, and then drop to room temperature at a rate of 2-5°C / min; the obtained product is obtained using a hammer mill Pulverization, according to 1.5 times and 1-5% of the mass of the pulverized material, add titanium-containing raw materials and phosphate to mix and pulverize, put the pulverized material into a high-temperature furnace for calcination, and set the calcination temperature to 800-1100 °C. The firing time is 4 to 8 hours, and the fired material is cooled and then crushed and classified to obtain the product. The synthesis process of the present invention is simple, easy to operate, without water treatment, and reduces environmental pollution; raw materials are mixed with phosphate, which inhibits the generation of fibers, and improves wear resistance, high temperature resistance, and braking performance. At the same time, the present invention produces The yield is high and the production cost is low.
Description
technical field [0001] The invention relates to potassium titanate, in particular to a preparation method of potassium titanate. Background technique [0002] Potassium titanate is a synthetic inorganic substance with unique properties. With TiO 2 There are many forms of potassium titanate with different content, different molecular formulas, different preparation methods, and different uses. The molecular formula of potassium titanate is usually K 2 O nTiO 2 to represent (n=2, 4, 6, 8). It is mainly used for reinforcement of composite materials, modification of engineering plastics, reinforcement of ceramics, metals, friction materials, etc. [0003] Potassium titanate friction material is mainly used in friction parts such as brake friction linings and clutch friction linings of various vehicles, brake devices, etc., requiring high and stable friction coefficient, excellent anti-fading, and excellent wear resistance. Asbestos is known to be carcinogenic and harmful t...
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IPC IPC(8): C01G23/00
CPCC01G23/005C01P2002/72C01P2004/03
Inventor 郭继光贺炅皓
Owner ZHANGJIAGANG OTSUKA CHEM