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本文简要她介绍了使用亚硫酸浮选金川难选贫镍矿的试验结果,对试验中的一些规律进行了初步分析。由于亚硫酸是一种还原剂,能清洗矿物表面,维持矿浆的“还原气氛”,因而使易氧化的紫硫镍铁矿得到活化,并对易泥化的矿浆有分散作用,故能显著改善紫硫镍铁矿的浮选。在按现厂生产工艺流程进行的试验中,添加亚硫酸可使镍回收率提高10％左右,如果在添加亚硫酸的同时,适当提高磨矿细度,则回收率可提高15％左在。对矿体西部为主的难选混合矿样(含0.58％Ni)进行试验,可选出品位为3.75％,回收率为65.40％的镍精矿,达到了“全国科技发展规划重点项目”规定的1985年的指标。
This article briefly introduced the use of sulfite flotation Jinchuan refractory lean nickel ore test results, some of the laws of the pilot conducted a preliminary analysis. Since sulfite is a reducing agent that cleans the mineral surface and maintains the “reducing atmosphere” of the slurry, the easily oxidized Violet Nickelite is activated and has a dispersive effect on the easily slurried pulp so that it can be significantly improved Vulcanite flotation. In the factory production process according to the experiment, the addition of sulfurous acid nickel recovery rate can be increased by about 10%, if the addition of sulfurous acid, while appropriate increase in grinding fineness, the recovery rate can be increased by 15% left. The refractory mixed ore samples (containing 0.58% Ni) in the western part of the ore body were tested, and the nickel concentrate with the grade of 3.75% and the recovery rate of 65.40% can be selected, meeting the requirements of the “Key National Science and Technology Development Plan” The 1985 indicator.