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Xie X.,Kunming University of Science and Technology | Xie X.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Hou K.,Kunming University of Science and Technology | Hou K.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | And 6 more authors.
Applied Mechanics and Materials | Year: 2014

The recovery of copper from smeltery furnace slag by flotation has been studied. By analysis the slag containing 1.61% copper and 27.80g/t silver is available to recovery. The effective factors such as particle size, the amount and type of collector were examined. The combination of the collectors was also examined. With the process utilized in this work, a copper concentrate of 26.47% Cu with a recovery of 78.85% is produced. The associated silver is mostly concentrated to the copper concentrate, and the silver recoveried in the copper concentrate is 97.57%. © (2014) Trans Tech Publications, Switzerland.


Tong X.,Kunming University of Science and Technology | Tong X.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Han B.,Kunming University of Science and Technology | Han B.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | And 4 more authors.
Applied Mechanics and Materials | Year: 2014

The recovery of copper from copper smelter slag utilizing flotation has been studied. A copper smelter slag from the Wang Jiaqiao smelter in Yunnan Province of china, containing 2.76% Cu, 44.41% Fe, 2.34% Zn and 18.4g/t Ag and so on, has been used.The effective factors such as grinding fineness, pH, and the dosage and type of collector were examined. Under the flotation condition of grinding fineness (90%-74μm), rougher pH 6, XT-53(80 g/t), and 2# oil (30g/t), copper grade of 23.55%, recovery of 85.61% was obtained. Besides, silver get a recovery of 76.2% and grade of 143.07g/t as associated metals. © (2014) Trans Tech Publications, Switzerland.


Xie X.,Kunming University of Science and Technology | Xie X.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Hou K.,Kunming University of Science and Technology | Hou K.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | And 6 more authors.
Advanced Materials Research | Year: 2014

A complex lead-zinc sulfide ore from Inner Mongolia Autonomous Region, China, was subjected to this work. Research on mineral processing was conducted according to the properties of the lead-zinc ore. The lead minerals are successfully separated from the zinc minerals with the combination of collectors. Compared to CuSO4, new reagent X-43 as zinc activator shows its advantage in marmatite flotation. With the process utilized in this work, a lead concentrate of 59.67% Pb with a recovery of 78.69% and a zinc concentrate of 50.99% Zn with a recovery of 81.98% are produced. The silver recovery in the lead concentrate is 56.76% while the indium recovery in the zinc concentrate is 42.60%. © (2014) Trans Tech Publications, Switzerland.


Hou K.,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization | Hou K.,Kunming University of Science and Technology | Hou K.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Tong X.,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization | And 8 more authors.
Advanced Materials Research | Year: 2014

Research on beneficiation of iron from iron-polymetallic was conducted according to the properties of the ore. The separation results show that magnetic separation is the best way to concentrate the iron mineral. The results show that iron concentrate assaying 60.15% Fe can be obtained with the recovery of 76.48%. © (2014) Trans Tech Publications, Switzerland.


Xie H.Y.,Kunming University of Science and Technology | Xie H.Y.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Ye Q.J.,Kunming University of Science and Technology | Zhou P.,Kunming University of Science and Technology | And 4 more authors.
Advanced Materials Research | Year: 2014

This paper is aimed at a typical complex polymetallic copper-zinc sulfide ores in Yunnan province, China, and adopted the process of bulk floatation discarding tailing under coarse grinding condition, the influence factors are researched such as grinding fineness, types and dosage of flotation reagents. When the coarse grinding size -74μm 75% and butyl xanthate and ethyl xanthate as combination collector, The amount of flotation discarding tailing is 60% for crude ores, the tailings contain 0.058% Cu, 0.027% Pb and 0.12% Zn, the loss rate of various metals in tailing is 3.21% Cu, 5.49% of Pb and 3.35% of Zn. This research has referenced significance to economical development and utilization of copper-zinc sulfide ore resources. © (2014) Trans Tech Publications, Switzerland.


Zhou Y.,Kunming University of Science and Technology | Zhou Y.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Tong X.,Kunming University of Science and Technology | Tong X.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | And 7 more authors.
Separation Science and Technology (Philadelphia) | Year: 2014

The beneficiation of cassiterite fines from a tailing slime in the Datun concentration plant was studied through a froth flotation process, with the chemical scheme of benzohydroxamic acid as collector, lead nitrate as activator, and pine oil as frother. It was found that tin values are mainly contained in the fine fraction of the sample and cassiterite is mostly associated with iron minerals and calcium minerals, so that the desliming treatment and the addition of dispersants and depressants can not be used as it generally results in the undesired loss of tin values. A novel flotation process with no dispersant and depressant as well as no desliming was developed. It showed that this process was effective in recovering the tin values from the tailing slime assaying 0.18% Sn, and produced a concentrate assaying 3.5% Sn with the recovery of 74.16%. It has been found that pine oil played a significant role in improving the recovery for tin values. © 2014 Copyright Taylor and Francis Group, LLC.


Yang B.,Kunming University of Science and Technology | Yang B.,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization | Yang B.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Tong X.,Kunming University of Science and Technology | And 8 more authors.
Journal of Chemistry | Year: 2016

The adsorption of Cu species onto pyrite surface and its effect on flotation were investigated by using microflotation tests, first-principle calculations, and XPS surface analysis. The results indicated that the flotation of pyrite appears to be activated with CuSO4 only at alkaline pH, while being depressed at acidic and neutral pH. The adsorption of copper ions on pyrite surface was pH-dependent, and the adsorption magnitude of copper ions at alkaline pH is higher than that at acidic and neutral pH due to a strong interaction between O atom in Cu(OH)2 and surface Fe atom except for the interaction between Cu atom and surface S atom. At acidic and neutral pH, there is only an interaction between Cu atom and surface S atom. The adsorption was relatively weak, and more copper ions in solution precipitated the collector and depressed the flotation of pyrite. XPS analysis confirmed that more copper ionic species (Cu(I) and Cu(II)) are adsorbed on the pyrite surface at alkaline pH than that at acidic and neutral pH. © 2016 Bo Yang et al.


Xie H.Y.,Kunming University of Science and Technology | Xie H.Y.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Ye Q.J.,Kunming University of Science and Technology | Tong X.,Kunming University of Science and Technology | And 3 more authors.
Advanced Materials Research | Year: 2014

In the bacterial leaching, the oxidation of Fe2+ is very important process. According to the results of this paper, Fe2+ and Fe3+ concentration effect on the growth of moderate thermophile. The optimum conditions for growth of moderate thermophile are the initial concentration of Fe2+ at 0.16mol/l. It indicates the existence of the optimum conditions including initial concentrations of Fe2+ and Fe3+ for the bio-oxidation Fe2+. To increase the initial concentration of Fe3+ can enhance the oxidation rate of Fe2+. The dynamic model of the moderate thermophile oxidation Fe2+ has been established by analyzing and calculating test data with the Matlab software. © (2014) Trans Tech Publications, Switzerland.


Han B.,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization | Han B.,Kunming University of Science and Technology | Han B.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Tong X.,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization | And 8 more authors.
Advanced Materials Research | Year: 2014

Properties of the ore were studied by chemical analysis and Lead phase. Research shows that the lead tailings contains 15.47 g/t of silver and 0.62% of lead, lead minerals are mainly Galena, Anglesite and Finnemanite, Silver minerals and galena symbiosis, besides, gangue minerals are mainly quartz. Based on properties of the tailings, flotation feasibility pilot study was conducted. Results show that excellent test indexes that a Ag grade of 137.09 g/t with a Ag recovery of 55.27% and a Pb grade of 5.85% with a Pb recovery of 60.35% were obtained under the used process and reagent system conditions. © (2014) Trans Tech Publications, Switzerland.


Deng Z.B.,Kunming University of Science and Technology | Deng Z.B.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | Xiong T.,Kunming University of Science and Technology | Xiong T.,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources | And 7 more authors.
Advanced Materials Research | Year: 2014

Effect of grinding fineness and inhibitors on mixed flotation of low copper and nickel were studied and a new nickel inhibitor YS was used in the process of separation of copper and nickel. The results indicated that the high-quality mixed concentrate with the recoveries of Cu and Ni 76% and 65.6% and the grade of Cu and Ni were 4.66% and 4.3%, respectively, was got under the condition of sodium silicate (200 g/t), CMC (200 g/t), copper sulphate200 g/t, amyl xanthate 100 g/t and pine oil 30 g/t with the grinding fineness of -0.074mm80%. Then, Qualified Cu concentrate with the grade26.65% and recovery 55.62%, Qualified Ni concentrate with the grade26.65% and recovery 55.62%, respectively, were got by using the new nickel inhibitor YS in the separation flotation of copper and nickel. © (2014) Trans Tech Publications, Switzerland.

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