zinc recovery by slag fuming process

  • FUNDAMENTALS OF ZINC RECOVERY FROM METALLURGICAL

    2012. 2. 7.· FUNDAMENTALS OF ZINC RECOVERY FROM METALLURGICAL WASTES IN THE ENVIROPLAS PROCESS Masud A. Abdel-latif Mintek, Randburg, Republic of South Africa [email protected] KEY WORDS: Enviroplas, D.C. Arc Furnace, ISP Condenser, EAF Dust, LBF Slag, Dross, Premelting, Smelting, Zinc Fuming. ABSTRACT

  • Recovery of Recycled Zinc by Slag Fuming at the Ronnskar

    Recovery of Recycled Zinc by Slag Fuming at the Ronnskar Smelter (English) Hansson, R. / Holmgren, H. / Lehner, T. New search for: Hansson, R.

  • 030308 Secondary zinc production European Commission

    2015. 8. 17.· Process description Lead blast-furnace slag often contains sufficient zinc to make recovery profitable by rotary kiln or submerged combustion slag fuming. In both cases zinc oxide in the slag is reduced to metallic zinc (vapor) by carbon, oxidized by secondary air, and carried out in the furnace gases for recovery of zinc oxide dust.

  • zinc recovery by slag fuming process

    recovery of zinc from slag using plasma arc fuming the aim of this project is to demonstrate the recovery of zinc, 10% zinc oxide. the process described Get Price us patent application for plasma induced fuming patent

  • (PDF) Investigation of zinc fuming processes for the

    There are few pyrometallurgical processes (such as Ausmelt technology, ISASMELT TM and submerged plasma zinc-fuming process) that have been proposed for the utilization of ZLRs and other wastes 3,4 .

  • A NOVEL METHOD FOR METAL RECOVERY FROM ZINC FUMING

    2018. 5. 8.· slag with higher initial zinc content, smaller electrodes (1250 °c) 81 fig. 41 — the effect of voltage on zinc concentration of synthetic tail slag (1250 °c) 87 fig. 42 — synthetic zinc tail slag fuming run without copper, sampling data ( 1250 °c) 87 fig. 43 — synthetic zinc tail slag fuming run with copper, sampling data ( 1250 °c) 88

  • Kinetics of the zinc slag-Fuming process: Part i. industrial

    1985. 9. 1.· A study involving industrial measurements and mathematical modeling has been conducted to eluci-date kinetic phenomena in the zinc slag fuming process. In the first part of this three-part paper, the results of industrial measurements and observations are presented. In Part II a mathematical model of the process is developed, and finally in Part III the implications of a kinetic conception of

  • Investigation of Zinc Fuming Processes for the Treatment of Zinc

    2012. 5. 10.· Submerged Plasma zinc-fuming process In the Submerged Plasma zinc fuming process (Figure 1), electric plasma torches supply process heat and good mixing conditions to the slag bath. Inside the plasma torches, the cold blast air is transformed into a high-enthalpy plasma gas. The plasma gas with natural gas (CH 4) is injected into the slag bath.

  • Fundamentals of zinc recovery from metallurgical wastes in

    2002. 11. 1.· The Enviroplas process was developed at Mintek to treat certain metallurgical wastes, such as lead blast furnace slag, electric arc furnace dust, and neutral leach residues from the zinc industry. The process relies on a DC arc furnace and an ISP lead splash condenser for the direct recovery of the contained zinc as prime western grade metal, with the simultaneous production of a disposable slag.

  • Recent developments in slag-fuming [email protected]

    2011. 9. 9.· Recent developments in slag-fuming process S. K. DAS and S. SARKAR N most lead-zinc run-of-mine ores, the main valua-1 ble minerals are galena and sphalerite . Two pro-ducts, namely a lead concentrate and a zinc concentrate are obtained by the differential froth

  • A NOVEL METHOD FOR METAL RECOVERY FROM ZINC FUMING

    2018. 5. 8.· slag with higher initial zinc content, smaller electrodes (1250 °c) 81 fig. 41 — the effect of voltage on zinc concentration of synthetic tail slag (1250 °c) 87 fig. 42 — synthetic zinc tail slag fuming run without copper, sampling data ( 1250 °c) 87 fig. 43 — synthetic zinc tail slag fuming run with copper, sampling data ( 1250 °c) 88

  • Recovery of Recycled Zinc by Slag Fuming at the

    Recovery of Recycled Zinc by Slag Fuming at the Ronnskar Smelter (English) Hansson, R. / Holmgren, H. / Lehner, T. New search for: Hansson, R.

  • Computational Fluid Dynamic Modelling of Zinc Slag Fuming Process

    2017. 2. 22.· Slag fuming is a reductive treatment process for molten zinciferous slags for extracting zinc in the form of metal vapour by injecting or adding a reductant source such as pulverized coal or lump coal and natural gas. The process has been operative since 1930’s for recovering zinc from lead blast furnace slag. Though slag fuming is a

  • Review of hydrometallurgical recovery of zinc from

    Sulphuric acid leaching process Sulphuric acid has been used for the recovery of zinc from the different wastes/secondaries viz. automobile shredded non-ferrous fraction (Coyle et al., 1977), slag of zinc cathode melting (Singh and Row, 1981), white dust resulting

  • Kinetics of the zinc slag-Fuming process: Part III. model

    In the final part of this paper the mathematical model of the slag fuming process, developed in Part II based on the analysis of industrial measurements from Part I, has been subjected to a sensitivity analysis, then employed to elucidate the rate limiting steps and to predict the influence of process variables on fuming. The kinetics analysis has been based on model predictions of fuming

  • Kinetics of the zinc slag-Fuming Process: part II.

    Abstract. A mathematical model of zinc slag fuming has been formulated based on the kinetic conception of the process developed in Part I of this paper. Each of the major reaction zones in the furnace — the slag bath where reduction of zinc oxide and ferric oxide takes place and the tuyere gas column where oxidation of coal and ferrous oxide occurs — have been characterized mathematically.

  • Computational Fluid Dynamic Modeling of Zinc Slag Fuming Process

    The zinc oxide fume is subsequently collected in the bag house. Figure 1 shows a schematic diagram of the zinc slag fuming process in the case of a top submerged lance (TSL) smelting furnace. II

  • Treatment of lead and zinc slags in hollow electrode DC-EAF in

    2013. 10. 14.· zinc slags Slag fuming Slag fuming is an evaporation process in which zinc and lead from a liquid slag are transferred into an oxidic flue dust13. The liquid slag is charged into the water-cooled reactor, where also solid residues, such as slag granulates can be charged10. Pulverized coal (<0.1 mm) is injected into the slag bath by air6.

  • Top submerged lance direct zinc smelting ScienceDirect

    2009. 8. 1.· Subsequently in Stage 2 zinc is fumed from the already molten Stage 1 slag to create a final discard slag with a total zinc recovery of 99%. The use of sulphide sulphur as fuel to smelt has economic advantage over the present end-of-pipe TSL applications, that require two steps (for smelting and sulphur removal) and then fuming using primary fuels.

  • A Brief Summary of Zinc Oxide Processing Methods Available for

    2017. 6. 19.· Oxidized zinc ore The Waelz process has been was initially developed to process zinc oxidized ore containing between 15 and 30% zinc. The PBSIM & BFS team was directly involved (process tests and development, engineering concept) with the Shairmerden zinc oxide ore deposit located in Kazakhstan where 200,000 tpy of ore is processed by the Kazzinc

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