بيت /Flash Smelting Process
· Flash Smelting Process Originally Outotec's former parent company Outokumpu developed the Flash Smelting technology for its own use. In 1949 Outokumpu introduced autogenous Flash Smelting of copper concentrates at their facility in Harjavalta, Finland. The technology has been continuously developed to meet the industry needs.
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ABSTRACT Improving metal–slag separation in pyrometallurgical processes is increasingly important. Due to the harsh conditions, direct observations of the molten phases behavior in the settler of the Outotec Flash Smelting Furnace (FSF) are not possible and the ways to improve metal settling can only be studied by simulation and modeling. This study focuses on kinetics and mechanisms of the ...
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The smelting furnaces used in the process are comprised of single burners or burner field systems for auxiliary firing operated with air, oxygenenriched air or oxygen as an oxidising agent. In the oxyfuel process, the combustion processes are carried out by means of an oxygen burner (oxyfuel burner) which is operated with pure oxygen or oxygenenriched air as an oxidising agent.
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Mathematical modeling of sulfide flash smelting process: Part I. Model development and verifiion with laboratory and pilot plant measurements for chalcopyrite concentrate smelting. Y. B. Hahn 1 H. Y. Sohn 2 Metallurgical Transactions B volume 21, pages 945–958 (1990)Cite this article
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Outotec® Flash Smelting combined with KennecottOutotec® Flash Converting is the cleanest copper smelting method available. Outotec® Flash Smelting Process makes use of the reaction heat of concentrate and no external fuel is needed. Owing to low volume of process gas and sealed equipment, a total of % of the sulfur can be captured.
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SO2. Bryk et have described a flash smelting process for lead concentrates that has been tested on a pilot plant scale by Outokumpu Oy in Finland. The offgases from the furnace contained 1012% of SO2. The Boliden Co. in Sweden has developed and placed in commercial operation a process for direct smelting of rich lead sulfide concentrates
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277. Determination of Surface Tension of the Freeze Slag in Reaction Shaft of Flash Smelting Furnace. Authors: Jin Liang Wang, Yan Xin Wu, Li Wei Liang. Abstract: According to the reaction shaft operation characteristics during the flash smelting process, 15 groups of slag samples containing high Fe 3 O 4 were prepared by some chemical reagents ...
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THE FLASH SMELTING PROCESS The flash smelting process for sulphide concentrates was developed by the Finnish mining company, Outokumpu Oy, from 1948 onwards. By mid·1911. a number of mining com pauies had negotiated licences and installed plants for using this process. Several other installations for both copper and
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The Outokumpu Flash Smelting Process was put into commercial operation in 1949. The original process was based on the use of preheated adoption of oxygen enrichment of the flash smelting process air in 1971 was a crucial improvement, especially for smelter capacity.
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In Copper Flash Smelting, flue dust can cause severe problems in the gas handling system, which typically consists of a heat recovery boiler and electrostatic precipitator. If the process is not operated properly, the flue dust may form accretions on the boiler wall, reducing boiler heat transfer and subjecting the surfaces to corrosion.
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In metallurgy: Matte smelting. Flash smelting is a relatively recent development that has found worldwide acceptance. It is an autogenous process, using the oxidation of sulfides in an unroasted charge to supply the heat required to reach reaction temperatures and melt the feed material. The most widely used furnace.. Read More.
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· Outotec is a leading supplier of smelting technology, with about 40 operational smelting lines around the world. The company claims its Flash Smelting Process is the cleanest smelting method available, giving high recovery of metals with low investment and operating costs.
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· The flash smelting process combines into one the flash roasting and the smelting operations The sulfide concentrate fines react with oxygen at high temperatures. The oxidation process itself generates sufficient heat for the smelting process to occur simultaneously. Slide 5
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The Smelting Process: General Considerations Smelting Products: Matte, Slag and Offgas Suggested Reading References 5 Flash Smelting Outokumpu Process Outokumpu Flash Furnace Peripheral Equipment Furnace Operation Control Impurity Behavior Future Trends Summary Suggested Reading References 6 Inco Flash Smelting
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process as well as being the BAT in copper and nickel smelting (Kytö et al., 1997). A typical flash smelting furnace is shown schematically in Figure 1. The refractorylined furnace vessel is composed of three sections: reaction shaft, settler and uptake shaft. In the flash smelting process, a .
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Flash smelting has been the most widely adopted copper matte smelting process since 1970. More than 40 furnaces have been installed to replace reverberatory furnaces or at new smelting operations. Nowadays the Outokumputype smelters account for more than 50 % of world primary smelter capacity. Processing and Uses
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02 Flash smelting furnace The copper concentrates are fed through the flash smelting furnace with oxygenenriched air. In the furnace, the concentrates are instantly oxidized, after which they melt and separate by their own reaction heat into copper matte with a grade of 65% and slag consisting of iron oxide, silica, and other compounds.
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Mar 19, 2015 · Moreover, the flash smelting process simulation results show that the reaction shaft design should be optimized based on a combination of furnace dimension and type of concentrate burners. Keywords Flash furnace, flash smelting, copper .
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Simulation of blowthrough in smelting baths with bottom injection: MP Schwarz, P Dang: 13th Process Technology Conference Proceedings, pages 415422. Iron and Steel Society, 1995: Modelling Radiative Transfer in Flash Smelting Furnaces: SR Varnas, JS Truelove: Applied Mathematical Modelling, 19(8), pp. 456464, 1995
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A method and corresponding apparatus for improving the control and efficiency of a combustion reaction in a flash smelting furnace, having the steps of mixing a first oxidizing gas having a first oxygen concentration with solid particles consisting of at least one combustible component and at least one incombustible component, directing the mixture of solid particles and said first oxidizing ...
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