【摘要】 通过对不同的初始含水量的水玻璃旧砂进行干法再生处理 ,经抽样化学分析检测再生效果 ,揭示了旧砂含水量与再生砂的 Na O2 残留量的关系。含水量小于 0 .1%干法再生效果很佳 ,含水量越大再生效果越差 ,含水量大于0 .7%的水玻璃旧砂难以机械干法再生更多还原

【Abstract】 Reclaimed sodium silicate sand with different of initial water content,sampled and detected effection of sand reclamation by chemistry test.Announced relation of water content of used sand with residual Na 2O.The effection of reclamation is worse as water content is larger.When content of water bleow 0.1%,the effection is the best,and it is hard to reclaim as water content greater than 0.7%.更多还原