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首页> 外文会议>National Seminar on "Application of Chemical Engineering for Utilisation of Natural Resources (CHEMINAR-2001)", Feb 16-18, 2001, Bhubaneswar >Particulate Leaching of Galena and Manganese Nodule in Hydrochloric Acid Medium
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Particulate Leaching of Galena and Manganese Nodule in Hydrochloric Acid Medium

机译：盐酸介质中方铅矿和锰结核的颗粒浸出

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摘要

Hydrochloric acid leaching of galena (PbS) and manganese nodule in combination was studied using ground samples. Galena, dissolved 1 M HCI because of non-oxidative dissolution, but the dissolution improved in presence of manganses nodule because of oxidative dissolution. Rate of dissolution of metal values from the nodule also got enhanced in presence of galena. Oxidative dissolution was found to occur through three routes such as (a) galvanic interaction between PbS and M_nO_2, (b) action of Fe~(3+) / Fe~(2+) redox couple and (c) action of Cl_2 gas generated from M_nO_2-HCl reaction on PbS. The last one appeared to have the minor contribution to the dissolution, galvanic interaction being effective only at higher solids concentration. Combined leaching of nodule and galena appears to be promising from both technical and economical point of view.
机译：使用地面样品研究了方铅矿（PbS）和锰结核组合的盐酸浸出。方铅矿由于非氧化溶解而溶解了1 M HCl，但是由于氧化溶解，在锰结核的存在下溶解得到了改善。在方铅矿的存在下，金属值从根瘤中溶解的速率也得到了提高。发现氧化溶解通过三种途径发生，例如（a）PbS与M_nO_2之间的电相互作用，（b）Fe〜（3+）/ Fe〜（2+）氧化还原对的作用以及（c）产生的Cl_2气体的作用M_nO_2-HCl在PbS上的反应。最后一个似乎对溶解没有贡献，电流相互作用仅在较高的固体浓度下才有效。从技术和经济角度来看，结节和方铅矿的联合浸出看来是有希望的。

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