Method for improving expansion performance of vermiculite
A technology of expansion performance and vermiculite, which is applied in the field of improving the expansion performance of vermiculite, can solve the problem that the expansion rate of vermiculite is not high enough, and achieve the effects of simple and effective control method, simple equipment and easy separation.
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[0026] Example 1
[0027] Put 2 grams of raw vermiculite and 10 grams of water into a 20 mL hydrothermal reactor, and then perform high temperature and high pressure hydrothermal modification at 180° C. for 24 hours under magnetic stirring at 50 rpm. After the hydrothermal modification is completed, it is filtered and expanded under a microwave with a power of 1500W to obtain expanded vermiculite. The expansion rate of expanded vermiculite is 800%.
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[0030] Example 2
[0031] Put 2 grams of raw vermiculite and 3.5 grams of potassium nitrate and 8 grams of water into a 20 mL hydrothermal reaction kettle, and then perform high temperature and high pressure hydrothermal modification at 180° C. for 24 hours under 80 rpm magnetic stirring. After the hydrothermal modification is completed, it is filtered and expanded at 850°C to obtain expanded vermiculite. The expansion rate of expanded vermiculite is 1920%.
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