Coke Finland [38] The butyl xanthate, 680, and Mac-10 as a collector, under different conditions of brass mineral, flotation of pyrite ore and separating effect of the actual tests conducted comparison study. The results show that Mac-10 has good application potential in the separation of copper and sulfur flotation. The harvesting ability is better than that of Dinghuang and 680, and the selectivity is good. It can be used in neutral or weak base with less dosage. Under the condition of conditions, the effective separation of chalcopyrite and pyrite is realized.
In order to improve the sulfur index of a low-grade carbon pyrite in Yunnan, Yang Liuyi and others used the reverse flotation-positive flotation process and replaced the previously used catch with a mixed flotation agent 402 with good flotation performance and low price. The butyl xanthate was added to raise the grade of pyrite concentrate to 42.25%, and the carbon mass fraction was reduced to 1.58%, while the recovery rate of pyrite was 92.96%.
Liu Xu et al. of Changsha Research Institute of Mining and Metallurgy developed a new collector CYS for pyrite, which replaced the yellow medicine used in the field for the experimental study of a pyrite in Guangdong, which not only obtained a higher grade of sulfur concentrate, but also Reduced dosage of the drug.
According to the characteristics of an associated pyrite ore in Anhui, Su Jianfang used the original sulfur selection process, together with the new sulfur flotation collector AT608 and the foaming agent BK204, and obtained 88.12% while obtaining the sulfur concentrate grade of 41.99%. The recovery rate not only increases the sulfur concentrate index but also greatly reduces the dosage of the agent (now the amount of AT608 is 115 g/t, and the previous amount of ethyl yellow is 230 g/t).
Mu owl and other tailings containing pyrite for high arsenic Mengzi regions with different inhibitors lime, potassium permanganate, sodium humate, and the like SN arsenic drop test. The results show that under high alkali conditions, the organic inhibitor SN has a good inhibitory effect on arsenopyrite, which can reduce the mass fraction of arsenic in the sulfur concentrate from 1.74% to 0.21%, and hardly affect the floatation of pyrite. The recovery rate of sulfur is maintained above 85%.
Under the condition of pH=8, Zhou Yuan, Zeng Juan, etc. studied the combination inhibitors of Na2S2O3 + pyrogallic acid, NaCIO + pyrogallic acid, CaC12 + tannic acid, KMnO4 + tannic acid, NaCIO + sodium humate The effect of the suspension of chalcopyrite and pyrite. The results show that they can be used as inhibitors of pyrite in the separation of copper and sulfur flotation, but there are some differences in selectivity and dosage. NaCIO+ sodium humate is a high-efficiency inhibitor of pyrite. It can successfully achieve copper and sulfur separation and obtain better technical indicators.
Zhou Weimin conducted an experimental study on the types and amounts of inhibitors in the process of floating lead sulfur suppression. Through the comparison test of single use and mixed use of inhibitors, the optimal ratio of sodium carbonate to zinc sulfate was 200:800 under alkaline conditions, and a good beneficiation index was obtained.
According to the characteristics of a copper ore in Jiangxi, the copper-sulfur mixed flotation was first carried out, and after the mixed concentrate was re-ground, Zhou Yuan et al. selected the new inhibitor DT-4 developed by Jiangxi University of Science and Technology to carry out copper-sulfur flotation separation of the concentrate. The separation between copper and sulfur was effectively achieved in a low alkali medium, and a copper concentrate having a copper grade of 23.45% and a recovery of 90.38% was obtained, and the sulfur grade and the recovery rate were 44.67% and 91.63%, respectively.
Yong et al Jiangxi a Cu - Ag metallic copper ore flotation separation of sulfur at low alkalinity conditions, when used in the test No. DT DT-2 series of flotation separation of copper and pyrite sulfur Inhibition was carried out and good indicators were obtained. A copper concentrate with a grade of 22.49% and a recovery rate of 88.76% and a sulfur concentrate with a grade of 33.07% and a recovery of 62.25% were obtained in a low alkalinity pulp with pH = 8, and the quality of the index was up to standard; The grade of Chinese silver is 1 391.6 g/t and the recovery rate is 71.59%.
Under low alkalinity conditions, a copper-sulfur ore was subjected to flotation separation test. Zhou Yuan et al. chose pyroic acid + tannin to effectively inhibit pyrite. This process is improved compared with the traditional high alkali process. Flotation indicators also reduce the cost of beneficiation and achieve cleaner production.
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