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filter for acid leaching residue

(PDF) Processing for extraction of valuable metals from

The residue assaying 9.21% Zn, 12.37% Pb and 5.31% Fe was used in successive processes involving sulfuric acid (H2SO4)water leaching to bring zinc into solution and therefore enrich the lead in

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Effect of Addition of Other Acids into Butyric Acid on

The selective leaching of zinc over iron from basic oxygen steelmaking (BOS) filter cake was investigated using mixtures of butyric acid with acetic and/or propionic acid, HCl, or H 2 SO 4 . The main focus was to assess the effects of other acids on the zinc and iron leaching in butyric acid. The results show that slight reduction of zinc leaching and increase in iron leaching may take place

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LEACHING RECOVERY OF ZINC, COBALT AND MANGANESE

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acid concentration for leaching of both cobalt and manganese was 50 g/L. Recovery of cobalt and manganese increased with peroxide concentration in the leaching solution. Keywords Leaching, Recovery, Hydrometallurgy, Zinc Plant Residue, Filter Press Cake

Published in: International Journal of Engineering, Transactions B: Applications · 2007Authors: D F Haghshenas · D Darvishi · Z Moshefi Shabestari · E Keshavarz Alamdari · S K SaAbout: Hydrometallurgy · LeachingBuy Now

Direct hydrometallurgical separation of Zn(II) from brine

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A sample of typical sulphate leaching filter cake residue from conventional hydrometallurgical treatment of Angouran zinc concentrate (Zanjan Zinc Khalessazan Industries Co., Iran) was used for brine leaching and lead cementation stages (Table 2).

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Strong Acid Leaching and Filtration of Lead/Silver Residue

A commercial scale strong acid leaching plant was commissioned at the Risdon plant of the Electrolytic Zinc Company of Australasia Limited, a member of the Pasminco group of companies, in February 1988. It was designed to upgrade the lead/silver residue product from 26% to 37% lead, thus improving the realised value and increasing overall zinc

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Selective recovery of rare earths from bauxite residue by

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The REEs can be recovered from bauxite residue by direct acid leaching but the extraction yields are generally low. The extraction yields can be increased by increasing the acid concentration but this will increase the dissolution of iron as well. Large amounts of iron in the leach solution create problems in the further recovery processes. Therefore, a combined sulfationroasting

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Sulfuric Acid Leaching of Smelter Matte

Sulfuric acid leaching of lead smelter mattes resulted in the recovery of about 45 pct of the nickel and cobalt and 10 to 45 pct of the copper. The addition of manganese dioxide increased the cobalt and nickel recovery from 45 pct to greater than 90 pct, and increased the copper from 10 to 45 pct to nearly 100 pct recovery. The cobalt and nickel extractions were found to be less dependent on

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Study of Filtration and Washing of Residue After HCL

One of the process stages of kaolin clay processing to alumina is solidliquid separation process after HCl leaching with subsequent washing of silica residue. Our laboratory studies have shown that of existing equipment most efficiently for this task pressure filter can be used. Slurry after hydrochloric leaching is amenable to filtration under 5 bar pressure with good parameters, in spite of

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Study of Filtration and Washing of Residue After HCL

One of the process stages of kaolin clay processing to alumina is solidliquid separation process after HCl leaching with subsequent washing of silica residue.

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KINETICS OF PbAND ZnLEACHING FROM ZINC PLANT RESIDUE

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and leaching kinetics of Pb and Zn from zinc extraction residue were investigated. For this purpose; the effects of NaOH For this purpose; the effects of NaOH concentration, contact time, stirring speed and temperature on the Pb and Zn recovery from the residue were studied.

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Process Design Aspects for ScandiumSelective Leaching of

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7 Leaching of Bauxite Residue with Mineral Acids 8 Konstantinos Hatzilyberis 1,*, with sulfuric acid as the leaching solvent, has shown 18 significant impact from acid feed concentration, mixing residence time, liquid to solids ratio, and 19 times of leachate reusage onto fresh BR. The thin film diffusion model, as the fundamental theory 20 for leaching, either with constant particle size

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Leaching of Metals from Hydrometallurgical Residue by

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A direct leaching on the hydrometallurgical residue with sulfuric acid was developed in this work. The influence of leaching temperature, the The influence of leaching temperature, the leaching time, the particle size and the sulfuric acid concentration was examined.

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Reductive leaching of zinc, cobalt and manganese from zinc

Conceptual flowsheet with acid leaching, reductive leaching and sulfide precipitation Abstract Zinc plant residue known as hot filter cake (HFC) contains a significant quantity of zinc oxide (ZnO).

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Optimization of Acid Leaching of RareEarth Elements from

The solid residue from stage 1 was subjected to stage 2 leaching using 2.0 M hydrochloric acid as a leaching agent. Figure 13 shows that the leaching of REEs reaches nearly 100% in a short time.

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Study of the Leaching of a Manganese Mining Residue by

Study of the Leaching of a Manganese Mining Residue by Na 2 SO 3 in Sulfuric Acid Solution written by A. Alaoui, K. El Kacemi, S. Kitane A published on 2013/08/30 download full

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Characterisation of Zinc Plant, ColdPurification Filter

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was consequently studied using aqueous sulphuric acid solution as leachant. Leaching parameters including temperature, time, solidtoliquid ratio and stirring speed have been investigated and ICPOES was used to determine the metal content in the leachate. Dissolution kinetics was studied using 1 M aqueous sulphuric acid solution, the temperature range of 4080 °C, and the time up to 360 min

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Effects of Leaching on the Chemical and Physical

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and residual acid neutralizing capacity than mud. Leaching caused a decrease in the EC of residues by at least one order of magnitude and ammonium acetateextractable Na levels were reduced by more than half. The pH of the residue decreased by about one unit after leaching. This was attributed to leaching of soluble alkalinity (HCO 3/CO 3 2) with the mobile Na+ ion. Both shortterm and

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US4367215A Method of acid leaching of silicates Google

A method of leaching of the metal contents in natural silicates by means of mineral acids to produce a metalcontaining leaching liquid and a solid residue is disclosed. The silicate is first crushed but the grain size of substantially all of it is kept above 0.1 mm. It is then leached for a period of time sufficient to form a solid residue

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Leaching (chemistry) Wikipedia

Leaching is the process of extracting substances from a solid by dissolving them in a liquid, naturally. In the chemical processing industry, leaching has a variety of commercial applications, including separation of metal from ore using acid , and sugar from sugar beets using hot water .

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Leaching and recovery of zinc from leaching residue of

The feasibility of leaching and recovery of zinc from zinc leaching residue (ZLR) based on a membrane filter press (MFP) was investigated. Experimental results show that zinc calcines with

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Effect of Addition of Other Acids into Butyric Acid on

Abstract. The selective leaching of zinc over iron from basic oxygen steelmaking (BOS) filter cake was investigated using mixtures of butyric acid with acetic and/or propionic acid, HCl, or H 2 SO 4.

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Leaching Sulfides by Sulphuric Acid: Copper

Sulphuric acid of 66° B. is purchased at Colo., and shipped to the refinery in iron tankcars, holding from 40,000 to 50,000 pounds. It is drawn or syphoned out of the cars into a leadlined iron tank on a truck and hauled to the refinery, where it is discharged into the storagetanks by means of compressed air. It is necessary to have this trucktank lined with lead, for the reason that, on

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RECOVERY OF VALUABLE METALS FROM ZINC PLANT RESIDUE

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After sulfuric acid leaching in washing stage, the obtained filter cake was subjected to reductive leaching to investigate the recovery of cobalt and manganese. Cobalt and

Published in: Physicochemical Problems of Mineral Processing · 2014Authors: Davood Moradkhani · Behzad Sedaghat · Mostafa Khodakarami · Ilnaz AtaeiAffiliation: University of ZanjanAbout: Manganese · Kinetics · CobaltBuy Now

Leaching and recovery of zinc from leaching residue of

The feasibility of leaching and recovery of zinc from zinc leaching residue (ZLR) based on a membrane filter press (MFP) was investigated. Experimental results show that zinc calcines with particle sizes of less than 106 m and chambers of widths of 30 mm are appropriate for establishing uniform filter cakes to obtain acceptable leaching and

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RECOVERY OF SODA FROM BAUXITE RESIDUE BY ACID LEACHING

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Proceedings of the 9th International Alumina Quality Workshop 2012 193 RECOVERY OF SODA FROM BAUXITE RESIDUE BY ACID LEACHING AND ELECTROCHEMICAL PROCESSING

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LEACHING OF ZINC OXIDE IN AQUEOUS SULPHURIC ACID SOLUTIONS

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LEACHING OF ZINC OXIDE IN AQUEOUS SULPHURIC ACID SOLUTIONS Jandová J.1, Proek T1., Maixner J.2 1 Prague Institute of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic 2 Prague Institute of Chemical Technology, Central Laboratories, Technická 5, 166 28 Prague 6, Czech Republic LOUENÍ OXIDU

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Study of the Leaching of A Manganese Mining Residue by

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Study of the Leaching of A Manganese Mining Residue by Na 2 SO 3 in Sulfuric Acid Solution A. Alaoui1 a, K. El Kacemi b, S. Kitane a, K. El Ass a

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Leaching Recovery of Zinc, Cobalt and Manganese from Zinc

Abstract This paper reports on the recovery of zinc, cobalt and manganese by twostep leaching of zincplants purification residue with sulfuric acid. The residue, hot filter press cake (HFC), contains 14 % ZnO, 4.8 % Co 3 O 4 and 22.9 % MnO.

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Leaching recovery of zinc, cobalt and manganese from zinc

This paper reports on the recovery of zinc, cobalt and manganese by twostep leaching of zincplants purification residue with sulfuric acid. The residue, hot filter press cake (HFC), contains 14

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In situ remediation of bauxite residue by sulfuric acid

In situ remediation of a bauxite residue by integrating a storage area with CSIRO's soda recovery process was evaluated. The process consisted of the following steps: bauxite residue is neutralized with sulfuric acid; the slurry is separated into

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