Results are provided for experimental-industrial tests of high-carbon ferrochrome smelting with partial replacement of the basic chromium ore with chromium ore briquettes produced by OJSC Donskoi Ore Mining and Processing Plant in an amount of 20–40% of the chromium ore raw material supplied to TNC Kazchrome JSC Aksu Ferroalloys Plant …
WhatsApp: +86 18221755073The chromium ore production of the world and China ... that a chromium concentrate with a chromium oxide content of 57.1% and a yield of 1.5% was obtained from …
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WhatsApp: +86 18221755073Chromium is not obtained in its free state; therefore, chromium ore is reduced by normal smelting process. Carbothermal reduction of chromium ore enables production of …
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WhatsApp: +86 18221755073Chromium slag is the waste residue generated by the industrial process of extracting chromium (Cr) from chromite ore. Due to different needs for chromite quality in the target product, the extraction processes for chromium (Cr) are also different, leading to diverse compositions and properties for chromium slag [1,2,3].Chromium salt manufacturing is a …
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WhatsApp: +86 18221755073A batch of column experiments was carried out to investigate the change of Cr(VI) concentration leached out from chromium-containing slag with HCl as leaching agent, and to study influences of pH, ratio of solid mass to solution volume, flow velocity and temperature on Cr(VI) leaching. The optimal parameters were obtained for Cr(VI) leaching and a fitting model …
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WhatsApp: +86 18221755073Abstract. Supply of world chromite (chrome ore) has come under severe pressure over the past year driven by strong demand for ferrochrome used in ferroalloy production for …
WhatsApp: +86 18221755073the slag was composed of Ca 2Al 2SiO 7 which revealed that both metal and slag so obtained could suitably be used in different industries. Keywords Low-grade chromite Tabling WHIMS Smelting Ferrochrome 1 Introduction Chromium is one of the essential raw materials for the production of ferrochrome/charge chrome alloys. World
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WhatsApp: +86 18221755073China annually generates millions of tonnes of chromite ore processing residue (COPR), firmly positioning it as a prominent global leader in the chromate industry, having processed approximately 40 % of the world's chromate compounds since 2009, as reported by the (Ministry of Industry and Information Technology, 2012).The country has accumulated a stockpile of …
WhatsApp: +86 18221755073Chromium slag is the waste residue generated by the industrial process of extracting chromium (Cr) from chromite ore. Due to different needs for chromite quality in the target product, the extraction processes for chromium (Cr) are also different, leading to diverse compositions and properties for chromium slag [1,2,3]. Chromium salt ...
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WhatsApp: +86 18221755073This study investigates the potential to recover iron and chromium from a chromium-bearing carbon steel Electric Arc Furnace (EAF) slag. This slag contains indeed about 30 wt.% Fe and 2.5 wt.% Cr.
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WhatsApp: +86 18221755073The formation of slags is inevitable in pyrometallurgy as every ore or scrap contains chemical elements which are undesired in the metal to be produced. ... Ageing of chromium(III)-bearing slag and its relation to the atmospheric oxidation of solid chromium(III)-oxide in the presence of calcium oxide. Chemosphere 52(10):1771–1779. https://doi ...
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WhatsApp: +86 18221755073The ore – an oxide of chromium and iron – is reduced by coal and coke to form an iron-chromium alloy called ferrochrome. ... The slag, which has a metallic content of approximately 4 percent, …
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WhatsApp: +86 18221755073Chromium slag is the waste residue generated by the industrial process of extracting chromium (Cr) from chromite ore. Due to different needs for chromite quality in the …
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