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首页> 外文期刊>International Journal of Mineral Processing >Complex sulphide ore flotation: Effect of depressants addition during grinding on H2O2 formation and its influence on flotation
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Complex sulphide ore flotation: Effect of depressants addition during grinding on H2O2 formation and its influence on flotation

机译：复杂硫化矿浮选：研磨过程中添加抑制剂对H2O2形成的影响及其对浮选的影响

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摘要

Our recent studies revealed that the ground sulphide minerals in contact with water generate H2O2 but its effect on the oxidation of pulp components and hence in deteriorating the concentrate grade and recovery in flotation has not been explored yet. In this study, the effect of depressant and collector additions during grinding on the formation of H2O2 by metal sulphides and its influence on complex ore flotation was investigated. The results showed a decrease in the generation of H2O2 with the addition of depressants during grinding while the addition of depressant and collector together increased H2O2 formation in the flotation pulp liquid. The flotation results showed that pyrite is effectively depressed when the depressant and collector are added together during grinding, corresponding to a condition of higher amounts of H2O2 in the pulp liquid thereby causing the oxidation of pyrite surface and depression in flotation. The best results of metal sulphides grade and recovery achieved also correspond to the same flotation conditions. (C) 2016 Elsevier B.V. All rights reserved.
机译：我们最近的研究表明，与水接触的地面硫化物矿物会生成H2O2，但尚未探索其对纸浆成分氧化的影响，从而对精矿品位的降低和浮选的回收产生影响。在这项研究中，研究了研磨过程中添加抑制剂和捕收剂对金属硫化物形成H2O2的影响及其对复杂矿石浮选的影响。结果表明，在研磨过程中添加抑制剂会减少H2O2的产生，而同时添加抑制剂和捕收剂则会增加浮选浆液中H2O2的形成。浮选结果表明，在研磨过程中将抑制剂和捕收剂同时加入时，黄铁矿得到有效地压制，这对应于纸浆液中H2O2含量较高的条件，从而导致黄铁矿表面氧化和浮选降低。金属硫化物品位和回收率的最佳结果也对应于相同的浮选条件。 （C）2016 Elsevier B.V.保留所有权利。

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