【作者】 魏兵； 连炜； 李江平； 王炳杰；

【Author】 WEI Bing~1 LIAN Wei~1 LI Jiang-ping~2 WANG Bing-jie~2 (1.Foundry Technology Journal Agency,Xian University of Technology,Xian 710048,China;2.Jiaozuo Changcheng Foundry Mechanical Co.,Ltd.Wen County 454800,China)

【机构】 西安理工大学铸造技术杂志社； 焦作长城铸造机械有限公司；

【摘要】 为了旧砂再生回用,采用热湿法再生和常温干法再生联合工艺再生水玻璃旧砂。建成试验生产线。生产实践表明:再生砂的Na2O残留量可控制在0.05%-0.10%,可作新砂使用。再生1吨旧砂,耗水量在150—200Kg。旧砂再生过程,可以回收水玻璃、焦砂和铬铁矿砂。没有污泥污水的排放,也没有含碱性的砂渣排放,可以达到旧砂再生环保要求。更多还原

【Abstract】 In order to reclaim and regenerate used sodium silicate-bonded sand,the process of hot water reclamation and dry reclamation is adopted,and a pilot production line is built.The production practice shows that the used sodium silicate-bonded sand can be used as the new sand if Na2O content of re- claimed sand is controlled in the range of 0.05wt%～0.10wt%.The water consumption for reclamation of 1 ton used sand is 150～200kg.During the reclamation process of the used sand,ester silicate,burned sand and ferrochromium mineral can be regenerated without the discharge of muddy water and alkaline sand slag,which can meet environmental protection requirements for reclamation of the used sodium sili- cate-bonded sand.更多还原