摘要
根据水玻璃旧砂残留粘结剂的水溶性特点,进行了水玻璃旧砂"冰冻-机械"再生试验研究。通过单因素试验测试了"冰冻-机械"再生水玻璃旧砂的影响因素,通过正交试验优化了水玻璃旧砂"冰冻-机械"再生的工艺参数。采用较优的工艺参数对水玻璃旧砂实施"冰冻-机械"再生,脱膜率可达到43.1%。进行了液氮制冷连续"冰冻-机械"再生水玻璃旧砂试验,它与冰箱冰冻水玻璃旧砂模拟的"冰冻-机械"再生脱膜率相近;利用自然冰冻条件对水玻璃旧砂实施"冰冻-机械"再生在我国的北方地区进行,再生效果与实验室模拟试验相似。与其他常用再生方法对比,"冰冻-机械"再生的效果远远优于其他常用再生方法。
According to the water solubility characteristic of the residual binder, the ＂freezing-mechanical＂ reclamation of used sodium silicate sand was studied. The effect factors of ＂freezing-mechanical＂ reclamation of used sodium silicate sand were tested through simple factor experiment. The technological parameters of ＂freezing-mechanical＂ reclamation for used sodium silicate sand were optimized through orthogonal experiment, and the stripping ratio of the reclaimed sand achieved 43.1% when using the optimal technological parameters. The continuous ＂freezing-mechanical＂ reclamation was carried out on sodium silicate sand refrigerated by liquid nitrogen, and the stripping ratio of the sand is close to that of refrigerated by refrigerator. The ＂freezing-mechanical＂ reclamation was also processed on sodium silicate sand that refrigerated under the natural freezing condition in north area. Compared with other common reclamation methods, the result of ＂freezing-mechanical＂ reclamation is much better.
出处
《铸造》
CAS
CSCD
北大核心
2008年第10期1013-1016,共4页
Foundry
基金
国家自然科学基金资助项目(50575085)
关键词
水玻璃旧砂
冰冻再生
冰箱冰冻
液氮制冷
自然低温冰冻
used sodium silicate sand
freezing reclamation
refrigerator freeze
liquid nitrogenrefrigeration
natural low temperature freeze
