The process of accumulation and dissipation of extra-static pore water pressure in fine-grained mud layer of tailings fill dam constructed by up-stream method is analysed.
本文对上游法修筑的尾矿坝的细粒泥层内超静孔隙水压力的积累和消散过程进行了分析。
Under negative pressure, nickel sulfate can be recovered from the liquid waste of copper electrolysis through the boiler stream. The recovery rate of nickel sulfate comes up to 98 %.
在负压的条件下，利用锅炉蒸汽回收铜电解废液中的硫酸镍，其回收率达到98%以上。
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