碱矿渣水泥基铬渣固化体浸出毒性的安全性研究

The Security Evaluation of Leaching Toxicity of Alkali-Activated Slag Cement Based Chromium Waste Consolidated Body

对碱矿渣水泥基铬渣固化体浸出毒性的安全性进行了研究，结果表明，即使固化体在破坏的情况下，其浸出毒性仍在安全剂量范围内。固化体的早期表面浸出率为１０－３～１０－４数量级，后期表面浸出率仅为１０－６数量级，与玻璃固化体的浸出率相当。可见固化体的长期抗表面浸出能力是很强的，完全可以用作建筑材料。

This paper deals with alkali-activated slag cement to be used to solidify chromium slag and the security of waste consolidated body. Experimental results show that even if AASC-based waste consolidated body was damaged,the leaching toxicity is still in a safety range. In the early time of leaching, the leaching rate of chromium(Ⅵ) of waste consolidated body is a little high, up to 10-3～10-4, in the later time of leaching, its rate greatly declined, down to 10-6,similar to leaching rate of glass-based waste consolidated body. It can be seen that the resistance of the AASC-based waste consolidated body to leaching is high, which can be used as building material.