Chemical regeneration method of water glass used sand
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United States of America
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Mar 29, 2022
Grant Date -
Dec 16, 2021
app pub date -
Aug 26, 2021
filing date -
Aug 26, 2021
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Abstract
A chemical regeneration method of water glass used sand, which belongs to the field of resource recycling in the casting industry. The present invention adopts a two-component reagent composed of calcium oxide and tap water, an emulsion composed of sucrose and calcium oxide, and a calcium chloride aqueous solution to process the regeneration of the used sand, and prepares the sample of the reclaimed sand obtained after the reagent mixed with the used sand is sealed and placed for 0 to 24 hours respectively, and tests the properties of the sample including: initial strength, final strength and collapsibility, and sodium carbonate content, and compares the properties of raw sand and used sand after the tests. Among several regeneration methods, each property index of the reclaimed sand obtained by using calcium oxide and tap water to regenerate for 12 hours is the best.
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