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首页> 外文会议>Annual national meeting American Society for Surface Mining and Reclamation >PILOT SCALE ILS TREATMENT OF CYANIDE PROCESS SLUDGES
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PILOT SCALE ILS TREATMENT OF CYANIDE PROCESS SLUDGES

机译：试点规模ILS治疗氰化物过程污泥

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This paper summarizes the construction and use of an in-line system (ILS) for oxidation of heap leach process pond sludges at the Minnie mine millsite, Okanogan County, Washington. Prior to their shipment to a waste disposal facility, this pilot scale system treated approximately 45,000 liters of sludge composed primarily of reagents, process precipitates, organic detritus and water to reduce total cyanide concentration from 1200 ppm to below 280 ppm. Treatment included oxidation with atmospheric oxygen alone and oxidation with a combination of atmospheric oxygen and calcium hypochlorite [Ca(OCl)_2]. The ILS proved effective in oxidizing cyanide compounds in the sludge and was an efficient reagent mixer. Analytical results were variable, however, total cyanide reductions averaging 4 percent for each pass through the system for air alone and 60 percent for air and calcium hypochlorite were indicated. These results suggest that further investigation of the ILS process as a component or stand-alone system for cyanide oxidation and toxicity reduction is warranted.
机译：本文总结了在华盛顿州奥卡冈县南矿山矿山池塘污水污水污水污水污水的施工和使用。在运输到废物处理设施之前，该试点系统治疗了大约45,000升，主要是试剂，工艺沉淀物，有机碎屑和水，将总氰化物浓度从1200ppm降至280ppm以下。处理包括用大气氧气氧化和具有大气氧和次氯酸钙的组合[Ca（OCL）_2]的氧化。在污泥中证明ILS有效氧化氰化物化合物，是有效的试剂混合器。然而，分析结果是可变的，然而，每次通过系统对空气系统的总氰化物的总体氰化物还原平均值和60％的空气和钙次氯酸盐。这些结果表明，有必要进一步调查ILS过程作为用于氰化氧化和毒性减少的组分或独立系统。

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