摘要
进行了水泥窑资源化共处置含氰黄金尾矿试验,探讨了利用含氰黄金尾矿替代部分水泥原料的可行性,考察了处理后尾矿和排放气体中氰化物的消解效果。结果表明,采用黄金尾矿替代部分水泥原料,在物料成分上是可行的。水泥窑中氧气浓度对尾矿中氰化物去除效率的影响不大,而处理温度对其去除效率有显著影响,高温有助于尾矿中氰化物的去除,处理后尾矿中剩余氰化物浓度满足HJ350—2007《展览会用地土壤环境质量评价标准》的相关标准要求。氧气浓度对排放气体中氰化物的消解率有一定的影响,氧气浓度高,则排放气体中氰化物浓度低,而排放气体中氰化物浓度基本不受处理温度的影响。总体上,气态氰化物的消解率均在98%以上,排放气体中的氰化物浓度满足GB16297—1996《大气污染物综合排放标准》和GBZ2.1—2007《工作场所有害因素职业接触限值》的相关要求。
The test of co-processing cyanide-contained gold mine tails in cement kiln for resource utilization carried out. The feasibility of cement raw material replaced partially by cyanide-contained gold mine tails discussed, and the removal effect of cyanide in treated mine tails and exhausted gas was investigated. experimentation indicated that it was feasible to partially replace cement raw materials by cyanide-contained mine tails. The oxygen concentrations in the kiln was was The gold effected cyanide removals in mine tails slightly, while the treatment temperature played an import role with high temperature able to promote The cyanide content in the treated mine tails agreed with Standard of Soil Quality （HJ 350-2007 ）. The oxygen concentration had some effect cyanides concentration in the exhaust gas was low when with cyanide removal in mine tails. Assessment for Exhibition Sites on the removal of cyanides in the exhaust gas; the high oxygen concentration, basically not affected by the treatment temperature. The cyanide decomposing rates were above 98% as a whole and the cyanide concentrations in exhausted gases during cement kiln co-processing gold mine tails satisfied Integrated Emission Standard of Air Pollutants （GB 16297-1996） and Occupational Exposure Limits for Hazardous Agents in the Workplace （ GBZ 2.1-2007 ）.
出处
《环境工程技术学报》
CAS
2013年第3期247-252,共6页
Journal of Environmental Engineering Technology
基金
中央级公益性科研院所基本科研业务专项(2008GGQD01)
关键词
黄金尾矿
氰化物
水泥窑共处置
资源化
gold mine tails
cyanide
cement kiln co-processing
resource utilization
