magnetic separation of zinc lead

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  A novel method to recover zinc and iron from zinc leaching residue

  201411 · A novel method to recover zinc and iron from zinc leaching residue (ZLR) by the combination of reduction roasting, acid leaching and magnetic separation was proposed. Zinc ferrite in the ZLR was selectively transformed to ZnO and Fe 3 O 4 under CO, CO 2 and Ar atmosphere. Subsequently, acid leaching was carried out to dissolve zinc from …

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  Comparing strategies for iron enrichment from Zn- and Pb …

  2021111 · Iron in RRP-800 °C and RRP-1150 °C is extracted by magnetic separation, and obtained concentrates have main minerals of magnetite and metallic iron, respectively. Elevated temperature decreases zinc and lead contents in concentrate.

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  Silver leaching and recovery of valuable metals from magnetic …

  2018420 · Abstract To comprehensively reuse lead-zinc tailings, the recovery of valuable metals from magnetic tailings after iron recovery from lead-zinc tailings using roasting followed by chloride leaching was studied in this paper.

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  Development of the New Zinc-Separation Process for the …

  2020125 · In this study, a new process/technology for zinc leaching from the blast furnace dust by sulfuric acid and recovery of high-purity leached zinc were introduced. The separation process consists of three steps, namely acid leaching, leachate purification, and alkali treatment.

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  Extraction and separation of zinc, lead, silver, and …

  Abstract: The present paper deals with the extraction and separation of zinc, lead, silver, and bismuth from a refractory bismuth refining slag via a hydrometallurgical route.

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  Comprehensive recovery and recycle of jarosite residues from zinc ...

  20201115 · By direct reduction followed by magnetic separation, lead, zinc and iron are separated and recovered from JR and sulfur is fixed. The non-magnetic tails (NMT) of the magnetic separation is used for removing of Cd, As and Pb heavy metal ions from acidic wastewater of zinc hydrometallurgy.

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  Magnetic Fluid Separation | SpringerLink

  2023514 · Magnetic fluid separation is a separation method that takes magnetic fluid as the separating medium and makes different minerals suspended in layers in the magnetoelectric field and gravity field in accordance with their magnetic intensity (or electric property contrast) and density under the action of an external magnetic field, …

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  Recovery of iron from zinc leaching residue by selective reduction ...

  20121030 · This is because the zinc ferrite is firstly decomposed to magnetite in initial reduction, but the reactions of Eqs. (3), (4) occur when residue roasted under excess carbon for a long time, so that most magnetite is reduced to wustite which enters into the magnetic tailings during magnetic separation and lead to the decrease of iron recovery.

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  Desulfurization Mechanism of Lead–Zinc-Bearing …

  202463 · The impurity sulfur in lead–zinc-bearing hematite–limonite ore mainly exists in the form of galena, sphalerite, pyrite, and natural sulfur, and deep reduc-tion roasting–low intensity magnetic separation does not effectively remove sulfur in a low valence state, which affects the quality of iron ore concentrate.

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  Silver leaching and recovery of valuable metals from magnetic tailings ...

  2018420 · Abstract To comprehensively reuse lead-zinc tailings, the recovery of valuable metals from magnetic tailings after iron recovery from lead-zinc tailings using roasting followed by chloride leaching was studied in this paper.

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