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Difference in Dissolution Between Germanium and Zinc ...

Difference in Dissolution Between Germanium and Zinc ...

 · Batch tests were carried out on zinc residue with high germanium at set in stirred acid solution. The effects of SO 2 , time, sulfuric acid concentration, temperature, liquid-to-solid ratio, and sulphur dioxide partial on the germanium dissolution were studied to optimize the parameters

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  • Discussion of “kinetic study on the pressure leaching of

     · of "* FATHI HABASHI . The authors studied the effect of oxygen partial . on the rate of dissolution of ZnS according . 1

  • Mechanochemical leaching of sphalerite in an alkaline

     · The zinc in sphalerite can be extracted by mechanochemical leaching in NaOH solution with lead carbonate as additive, and the lead sulfide in the leach residues can be converted to lead carbonate by reacting with sodium carbonate solution using air as the oxidizing agent, and then the lead can be recycled in the whole process by dissolving the lead carbonate in NaOH solution

  • 10.1016/j.hydromet.2010.01.009 | 10.1016/j ... - DeepDyve

     · Baldwin and Demopoulos 1995 studied of six zinc concentrates in which iron is present in very different forms. They found that if iron present as a separate mineral the behavior of that mineral during greatly influences the effectiveness of the process for zinc concentrates

  • Oxidative pressure leaching of sphalerite concentrate with

     · Abstract. The leaching of a the . The variables considered in the study were particle size, concentration of sulfuric acid, partial

  • Kinetics of indium dissolution from marmatite with high

     · Abstract. The kinetics of oxygen acid marmatite with high indium content was studied. The effects of particle size, agitation rate, temperature, H 2 SO 4 concentration, and oxygen partial on rate of indium were investigated. The results show that when the agitation rate is above 600 r·min −1, its influence on indium rate is insignificant

  • Leaching Behaviour of Metals from a Sphalerite Concentrate

    behaviors of zinc, copper, indium and iron from a concentrate in sulfuric acid-oxygen system has been investigated in the present paper. Various parameters were studied including particle size, concentration of sulfuric acid, partial of oxygen, temperature, and time. The experimental data indicated that under the typical plant conditions employed

  • Direct Acid Leaching of Sphalerite: An Approach

    Lab-scale experiments of direct of zinc from concentrate were carried out in a 0.5 M sulfuric acid solution at 353 K under atmospheric pressure. Deionized, distilled water was used in all experiments. Heating was achieved by using a hotplate/stirrer

  • Oxygen pressure acid leaching of artificial sphalerite

     · Artificial for the acid The variations in the potential of the pressure leaching system were investigated by using a self-designed potential autoclave. The results showed that compared to the non-iron sphalerite, there was a violent redox reaction between the

  • Research on Behavior of Iron in the Zinc Sulfide Pressure

    process are generally high, the ferric iron is hydrolyzed to form various iron-containing phases. At lower temperatures, goethite is formed in solutions with low ferric ions Fe3+ ... A previous study on the behavior of by Xu Zhifeng et al. [20] indicated that

  • Lei Tians research works | Jiangxi University of Science

    Artificial was fabricated with varying amounts of iron content via the sintering of ZnS and FeS and used for the acid experiment. The variations in the potential of

  • Surfactants Influence on Sphalerite Wetting during Zinc

    This paper describes an investigation of the surfactant influence on zinc sulfide wetting and the of zinc concentrates. For this, a variety of anionic and cationic surfactants with different chemical structures were tested. The methodology for mineral preferential wettability determination via establishing correlation between the spreading coefficients was proposed

  • OXIDATIVE AMMONIA LEACHING OF SPHALERITE

    ABSTRACT: This paper presents a study of kinetics of of concentrate in ammonia solutions. The effects of ammonia concentration, oxygen partial , reaction temperature and particle size on the rate were investigated. The shrinking core model was applied to the results obtained from these experiments

  • Pressure acid leaching of sphalerite concentrate: A

    The pressure leaching has been commercially used in several zinc ore/concentrate leaching plants Filippou, 2004 Ozberk et al., 1995. As an environmentally friendly and economical technology, high pressure leaching is an alternative to conventional RLE route. The reaction of sphalerite is shown in Eq. ZnSO 4

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