公开(公告)号：US20210387247A1

公开(公告)日：2021-12-16

申请号：US17412282

申请日：2021-08-26

申请人： WUHAN TEXTILE UNIVERSITY

发明人： Jijun LU ,  Kaisheng YANG ,  Zili XU ,  Lianqing YU ,  Xin LU ,  Jichang LI

IPC分类号： B22C5/04 ,  B22C1/02 ,  B22C5/06

摘要： A chemical regeneration method of water glass used sand is provided in the present disclosure, which belongs to the field of resource recycling in the casting industry. The present disclosure adopts a two-component reagent composed of calcium oxide and tap water, emulsion composed of sucrose and calcium oxide, and 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.