For optimizing the cutting depth of spiral drum type cutting head,the relations among collecting ratio,interfusing ratio of mullock and cutting depth of the mining cobalt-rich crusts in ocean were discussed.Furthermor...For optimizing the cutting depth of spiral drum type cutting head,the relations among collecting ratio,interfusing ratio of mullock and cutting depth of the mining cobalt-rich crusts in ocean were discussed.Furthermore,the multi-extremum problem about cutting depth was analyzed in mining at a certain interfusing ratio of mullock.Through introducing genetic algorithm(GA),the cutting depth-control problem when the collecting ratio is maximized by controlling the interfusing ratio of mullock was solved with global-optimization-search algorithms.Then optimization theory for cutting depth in mining cobalt-rich crusts by GA,and computer programming were given to realize the algorithm.The computation result of actual data proves the validity of this method.展开更多
采矿废石中的重金属元素会由于废石长时间的露天堆放,受到风化、雨水侵蚀等的作用而释放出来,从而对环境产生一定的危害。以广西某锡钽铌多金属矿区采矿废石为研究对象,对采矿废石样品进行了性质鉴别,并考察了pH、温度和离子强度等环境...采矿废石中的重金属元素会由于废石长时间的露天堆放,受到风化、雨水侵蚀等的作用而释放出来,从而对环境产生一定的危害。以广西某锡钽铌多金属矿区采矿废石为研究对象,对采矿废石样品进行了性质鉴别,并考察了pH、温度和离子强度等环境条件对采矿废石中铅、砷、镉等重金属溶出的影响。结果表明:实验所选取的废石样品为第I类的一般工业固体废物。采矿废石中的铜、铅、镍在pH=4,镉和锌在pH=5,而砷在pH=6的条件下溶出较为明显;重金属元素砷,锌,铜,铅在离子强度为1 ms cm-1时,浸出浓度最大,而镍和镉元素则是在0.1 ms cm-1时出较多;砷,镉和铜在温度为35℃,镍元素在30℃,铅元素在25℃的条件下溶出质量浓度达到最大值,而锌元素的浸出质量浓度受温度的影响较小。展开更多
基金Project(50474052)supported by the National Natural Science Foundation of ChinaProject(2005) supported by the Youthful Teacher Skeleton Foundation of Hunan Province, ChinaProject supported by the Postdoctoral Foundation of China
文摘For optimizing the cutting depth of spiral drum type cutting head,the relations among collecting ratio,interfusing ratio of mullock and cutting depth of the mining cobalt-rich crusts in ocean were discussed.Furthermore,the multi-extremum problem about cutting depth was analyzed in mining at a certain interfusing ratio of mullock.Through introducing genetic algorithm(GA),the cutting depth-control problem when the collecting ratio is maximized by controlling the interfusing ratio of mullock was solved with global-optimization-search algorithms.Then optimization theory for cutting depth in mining cobalt-rich crusts by GA,and computer programming were given to realize the algorithm.The computation result of actual data proves the validity of this method.
文摘采矿废石中的重金属元素会由于废石长时间的露天堆放,受到风化、雨水侵蚀等的作用而释放出来,从而对环境产生一定的危害。以广西某锡钽铌多金属矿区采矿废石为研究对象,对采矿废石样品进行了性质鉴别,并考察了pH、温度和离子强度等环境条件对采矿废石中铅、砷、镉等重金属溶出的影响。结果表明:实验所选取的废石样品为第I类的一般工业固体废物。采矿废石中的铜、铅、镍在pH=4,镉和锌在pH=5,而砷在pH=6的条件下溶出较为明显;重金属元素砷,锌,铜,铅在离子强度为1 ms cm-1时,浸出浓度最大,而镍和镉元素则是在0.1 ms cm-1时出较多;砷,镉和铜在温度为35℃,镍元素在30℃,铅元素在25℃的条件下溶出质量浓度达到最大值,而锌元素的浸出质量浓度受温度的影响较小。
