Leaching and recovery of zinc from leaching residue of zinc calcine based on membrane filter press

Ru, Zhen-guang; Pan, Cenxuan; Liu, Guihua; Wang, Xueting; Dou, Guangyu; Zhu, Kesong

doi:10.1016/s1003-6326(15)63645-7

Cited by 10 publications

(7 citation statements)

References 13 publications

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“…Inorganic acid (e.g., sulfuric acid) and alkaline (e.g., sodium hydroxide) leaching reagents usually erode the leaching equipment and cause environmental problems (Zhang et al, 2016a). Due to their relatively low corrosivity, organic acids became widely used as the leaching reagent to extract zinc from zinc oxide (Irannajad;et al, 2013;Ru et al, 2015;Yang et al, 2016b). Most researches have been conducted on the zinc recovery from metallurgical slag through a single chemical reaction (neutral reaction or complexation reaction).…”

Section: Introductionmentioning

confidence: 99%

Experimental and kinetic study of zinc leaching from metallurgical slag by 5-sulfosalicylic acid

Wang¹,

Gao²,

Song³

et al. 2021

Physicochem. Probl. Miner. Process.

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As an organic acid with the characters of low corrosivity and extensive source, 5-sulfosalicylic acid (5-SSA) was firstly utilized as a potential leaching reagent for the recovery of zinc from metallurgical slag. Effects of stirring speed, leaching temperature, 5-SSA concentrations and size fraction on the leaching zinc leaching rate were investigated. A zinc leaching efficiency of 94.2% was achieved under the appropriate operating conditions (450 rpm of stirring speed, 50 ℃ of leaching temperature, 0.3 mol/L of 5-SSA concentration and d90=65 µm of size fraction), indicating that 5-SSA was an excellent leaching reagent of zinc oxide. SEM-EDS and specific surface aperture analyzer further reveal the well-developed micropores and cracks from zinc metallurgical slag, which could be assigned to the removal of zinc oxide encapsulated in the sample. In addition, the leaching kinetics of zinc metallurgical slag in the 5-SSA was studied. It was found that the surface chemical reaction model satisfactorily predicted the zinc leaching rate. A reaction kinetic equation was finally established for the zinc leaching rate.

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Section: Introductionmentioning

confidence: 99%

Experimental and kinetic study of zinc leaching from metallurgical slag by 5-sulfosalicylic acid

Wang¹,

Gao²,

Song³

et al. 2021

Physicochem. Probl. Miner. Process.

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“…In the recent studies, various extraction methods for recovery of valuable metals from zinc-containing residue (ZCR) was applied such as chloride leaching (Raghavan et al 1998;Langova et al 2009;Silwamba et al 2020), two-stage leaching with sulphuric acid and citric acid (Fattahi et al 2016;Sethurajan et al 2017), sulfate roasting and water leaching (Jiang et al 2017;Guo-min et al 2017), using of membrane filter press (Ru et al 2015), and converting by SO 2 (Li et al 2020). On the other hand, mechanical…”

Section: Introductionmentioning

confidence: 99%

Characterization and leaching of mechanically activated zinc residue

Turan

2021

Chem. Pap.

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Zinc extraction from zinc-containing residual (ZCR) was examined with the leach of sulfuric acid of original materials and the materials milled in two different mill systems. For this purpose, vibrating ball mill (VBM) and ring mill (RM) were used. In chemical analysis of ZCR, it was determined that it contains a significant amount of zinc, lead, iron and silver and consisted of mostly CaSO4.2H2O, PbO, SiO2, Fe2O3, ZnFe2O4, Al2FeO4 and PbSO4 mineral phases. It was determined in XRD analysis of samples milled at both mills that peak intensity dramatically decreased when compared to original sample.According to comparative characterization analyses of the milled samples, it was determined that through the increasing grinding time, the particles became agglomerated and an increase in grain size occurred. This situation was also supported by N2-BET and SEM analyses.While zinc extraction value of the sample milled for 1 min, which was obtained at 0.5 M H2SO4 at leach temperature of 25 °C, at the solid–liquid rate of 100:1 and during the leach time of 30 min, was 90% and 60% for, respectively, VBM and RM, zinc of 54% was determined to be extracted in the leach of the original sample, under the same conditions.

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“…The membrane filter press (MFP), which is a common machine on solid-liquid separation, hasadvantages of low cost, high solid content and outstanding efficiency that has been widely used in various industries. The use of a MFP is found to be completely feasible and effective to leach and recover zinc from leaching residues of zinc calcine (Ru et al, 2015). Thereby, improving the technology of zinc production at the stages of solution purification and electrowinning of zinc is relevant.…”

Section: Introductionmentioning

confidence: 99%

Purification Phases of Zinc Sulphate Solution Obtained From Neutral Leaching Process of Zinc Calcine

Deva¹,

Rizaj²

2019

Scitech

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The aim of this paper is based in analyze of the zinc sulphate solution obtained from neutral leaching process of zinc calcine in "Trepca" and its purification from impurities. This solution besides zinc contains also and other impurities such as (Cu, Cd, Co, Ni, As, Ge, Sb, Se, Te, Ag etc.), which are with different concentrations. The sulphate solution can released from metal impurities based on the fact that they have higher electro -chemical potential than zinc and, as such, during the refining process they separate and precipitate in metallic form. Treatment of solution with appropriate technological methods technologically is very important in continuation of the electrolysis process and is accompanied by economic effects, because of non-ferrous and rare metals benefit. In this paper are described the phases of the purification process including acidic purification, cooling, needed materials and equipments for the refining process. Also, special attention is dedicated to the factors that have influence in the process development such as concentration, temperature, time, compressed air, etc.

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Leaching and recovery of zinc from leaching residue of zinc calcine based on membrane filter press

Cited by 10 publications

References 13 publications

Experimental and kinetic study of zinc leaching from metallurgical slag by 5-sulfosalicylic acid

Experimental and kinetic study of zinc leaching from metallurgical slag by 5-sulfosalicylic acid

Characterization and leaching of mechanically activated zinc residue

Purification Phases of Zinc Sulphate Solution Obtained From Neutral Leaching Process of Zinc Calcine

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