242 The current zinc-fuming model assumes: l The slag bath is well stirred and uniform in temperature and composition; The temperature of the hot face of the freeze lining is the liquidus temperature of the slag. l The furnace is cylindrical and only radial heat transfer through the freeze lining takes place.
Fuming furnace slag is a waste material generated from zinc producing industry. It has potential for application in concrete mix for road construction. Laboratory study was carried out to investigate the feasibility of using slag as a partial replacement of fine aggregate in the preparation of pavement quality concrete (PQC) and dry lean ...
slag fuming furnace consisting two opposing set of tuyere. The model was developed in Eulerian multiphase flow approach by employing 3D hybrid unstructured orthographic grid system. The aim was to investigate details of fluid flow, submerged coal combustion dynamics, coal utilization behaviour, jet penetration behaviour, bath ...
Fuming of lead blast furnace slag (1930) Production of fertilizer from Trail byproducts (1931) Suspension roasting of zinc sulfide concentrates (1936) Minimizing loss of lead tankhouse electrolyte . Establishing a major source of captive electric power (1942) Support of World War II efforts . Recovering dust and fume from furnace offgas
The Fuming process is applied to comprehensively recycle lead-antimony blast furnace slag.Slag is fed in fuming furnace in the form of cold particulate Each period costs1.5~2.5 hours.when the fuming temperature reaches 1,250 ℃ and the reduction smelting time lasts 2 hours,the majority of useful metals can be recovered as metal oxide with the product rate around 14 %.And the derelict slag can ...
Computational Fluid Dynamic Modeling of Zinc Slag Fuming Process in Top-Submerged Lance Smelting Furnace Nazmul Huda, Jamal Naser, Geoffrey Brooks, Markus A. Reuter, and Robert W. Matusewicz Metallurgical and Materials Transactions B, 2012, Volume 43, Number 1, Page 39
the fuming furnace has done its job separating the zinc the melt, the remaining slag and metals are moved to the settling furnace. Then when removing the slag from the settling furnace a hole is opened manually using a thermal lance. The slag then runs down a …
A method and apparatus for the reduction and fuming of tin concentrates, tin slags and other tin bearing materials in a closed submerged arc furnace provided with a stirrer which acts to stir molten slag in the furnace to produce a vortex acting to transfer hot slag from the vicinity of the tips of the furnace electrodes to the vortex region, the furnace being constructed to permit ...
A Computational Fluid Dynamic Modeling Study of Slag Fuming in Top Submerged Lance Smelting Furnace. Jamal Naser. Nazmul Huda. Markus Reuter. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper.
Slag fuming has been used since 1930s to recover zinc from lead blast furnace slag [1]. It is mostly a batch process, in which a reducing mixture of air and pulverized coal is injected into the ...
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The hot gas is controlled (214) to have an enthalpy of at least 200 MJ/kmol, and preferably at least 300 MJ/kmol. At least a part of the evaporable metals and/or evaporable metal compounds are fumed off (216) from the molten slag. An arrangement for the method is based on a furnace with a plasma torch submerged into molten slag in the furnace.
The QSL Lead Slag Fuming Process Using an Ausmelt Furnace. Myung Bae Kim. Korea Zinc Co., Ltd. 142 Nonhyun‐Dong, Seoul 135–749, Korea. Search for more papers by this author. Woll Seung Lee. Korea Zinc Co., Ltd. 142 Nonhyun‐Dong, Seoul 135–749, Korea. Search for more papers by this author. Yong Hack Lee. Chonbuk National University ...
In the zinc slag fuming process, zinc is extracted from lead blast furnace slag by reduction with a coal/air mixture injected into the slag through submerged tuyeres. The furnace is constructed of water-cooled jackets to contain the molten bath and freeze a protective slag layer.
Kim, WS Lee, YH Lee, "The QSL Lead Slag Fuming Process Using an Ausmelt Furnace", Lead-Zinc 2000(1), TMS, vol. 15(11), pp. 331-343, 2000 Process type : Continuous Injection type : T op ...
The slag containing iron and zinc from Cominco's Lead Plant is charged into the slag fuming furnace where fine coal and air is injected into it. Giga-fren BAT-associated emission levels for dust emissions to air from the melting of metallic and mixed metallic/oxidic streams, and from the slag fuming furnace …
The slag from zinc fuming furnace is tapped into a gas-fired holding furnace where copper matte and waste slag are separated. The total cycle time for the process is about 165 minutes. A process flow diagram of the zinc fuming plant, prepared during the inspection, is shown in Figure 8. ...
A continuous process for the fuming treatment of metallurgical slag, e.g. lead and copper smelting furnace slag. Passing the slag continuously through consecutive slag treatment zones of a fuming furnace, subjecting it in a first one of said zones to heating to fume off comparatively volatile, preferably sulphide-bound constituents thereof, subjecting it in a second one of said zones to ...
Slag fuming is a reductive treatment process for molten zinciferous slags for extracting zinc in the form of metal vapor by injecting or adding a reductant source such as pulverized coal or lump coal and natural gas. A computational fluid dynamic (CFD) model was developed to study the zinc slag fuming process from imperial smelting furnace (ISF) slag in a top-submerged lance furnace and to ...
en The slag containing iron and zinc from Cominco's Lead Plant is charged into the slag fuming furnace where fine coal and air is injected into it. Giga-fren fr Dans l'usine de plomb de Cominco, le laitier contenant du fer et du zinc est envoyé dans le four de réduction des scories où on y …
Other articles where Slag fuming is discussed: silver processing: From zinc concentrates: This is processed by slag fuming, a process whereby the residue is melted to form a slag through which powdered coal or coke is blown along with air. The zinc is reduced to the metallic form and is vaporized from the slag, while the lead is converted to the…
The QSL Lead Slag Fuming Process Using an Ausmelt Furnace. Myung Bae Kim, Korea Zinc Co., Ltd. 142 Nonhyun-Dong, Seoul 135–749, Korea. Search for more papers by this author. Woll Seung Lee, Korea Zinc Co., Ltd. 142 Nonhyun-Dong, Seoul 135–749, Korea. Search for more papers by this author. Yong Hack Lee,
A computational fluid dynamic (CFD) model of a conventional tuyere blown slag fuming furnace has been developed in Eulerian multiphase flow approach. The model was developed by coupling CFD with kinetics equations developed by Richards et al. for zinc fuming furnaces. The model integrates submerged coal combustion and chemical reactions with ...
The slag from the Kivcet furnace is treated in a slag fuming furnace where the zinc in the slag vaporizes to form a zinc oxide fume, which is further treated in an oxide leaching plant to recover the zinc, indium, germanium and cadmium. The hot Sulphur dioxide gas (about 1200°C) from the reaction shaft is cooled in the waste heat boilers and ...
Study is made of Ga recovery process from ISP or fuming furnace granulation slag （ISP）。 2、,,,, ...
furnace is an attractive energy-saving option, Schoukens et al (1995). However, dry and granulated slag (stockpiled in dumps) can be directly charged into the fuming furnace. Metallurgical coke is employed as the reducing agent and is delivered to the fuming furnace at a controlled rate. Coals, charcoal or other carbonaceous materials, low in
Mackey and Nagamori studied the recovery of zinc from reverbatory furnace slag by fuming with CO gas at 1250 °C. Their model explains well the experimental observation that the volatilisation of zinc is suppressed until most of magnetite in …
Responsible for the technical optimisation and improvement of the Port Pirie Smelter slag fuming furnaces and kilns. Key achievements include record high zinc elimination rates and the introduction of high efficiency coal feeds to the furnaces.
Many translated example sentences containing "slag fuming furnace" – French-English dictionary and search engine for French translations.
A continuous process for the fuming treatment of metallurgical slag, e.g. lead and copper smelting furnace slag. Passing the slag continuously through consecutive slag treatment zones of a fuming furnace, subjecting it in a first one of said zones to heating to fume off comparatively volatile, preferably sulphide-bound constituents thereof, subjecting it in a second one of said zones to ...
