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A process for the leaching of a laterite ore or concentrate for the recovery of value metals, such values including iron, cobalt and nickel, comprising the steps of: a) subjecting laterite ore or concentrate to a leaching step with a lixiviant comprising hydrochloric acid and magnesium chloride to leach value metals from the laterite ore or concentrate, followed by a liquid/solids separation
Direct extraction of nickel and iron from laterite ores
Direct extraction of nickel and iron from laterite ores using the carbonyl Process Article in Minerals Engineering 54:124130 #183; December 2013 with 531 Reads How we measure ''reads''
#0183;#32;These included a paper on the direct reduction of nickel and iron from laterite ore using the Carbonyl Process, which was invented over 100 years ago. The Canadian company CVMR Corp. has developed the process of direct extraction of nickel and iron from laterite ores in the form of metal carbonyls and production of pure metals.
CVMR#174; developed the process of direct extraction of nickel and iron from laterite ores as metal carbonyls which in turn produced pure nickel and iron metals. CVMR#174;s carbonyl technology has been applied to several types of limonite and saprolite ores containing other metals such as copper, cobalt and PGE.
#0183;#32;It was observed that around 75% nickel could be extracted selectively over iron, from the laterite ore, at a temperature of 650#176;C, with 30 wt.% sulphuric acid and 15min roasting time. The nickel extraction was improved to 93% by optimising the process variables, using the steepest ascent method, at 710#176;C temperature, 38 wt.% sulphuric acid and 13min roasting time.
Direct extraction of nickel and iron from laterite ores On Jan 1, 2013 Dmitri S. Terekhov (and others) published: Direct extraction of nickel and iron from laterite ores using carbonyl process. Inquire Now; ASX Cobalt Miners for Your Radar
CVMR developed the process of direct extraction of nickel and iron from laterite ores as metal carbonyls which in turn produced pure nickel and iron metals.
Lateritic Nickel Ore Processing. While sulfide nickel ores are processed via upgrading to concentrates and then smelting, this approach is not applicable to laterite ores. A variety of approaches are available to process nickel laterite ores, with the most prevalent approaches explained below. The method(s) chosen is dependent on the
Direct extraction of nickel and iron from laterite ore using Carbonyl Process Terekhov and Emmanuel (CVMR#174; Corporation, Canada) Coffee Thermodynamic analysis of the FeNiCoMgSiOHSCCl system for selective sulphidation of a limonitic laterite ore
#0183;#32; OF NICKEL The extraction of nickel and ferronickel from laterite and sulfide ores Laterite ores occur as saprolite, smectite and limonite layers because of their different compositions and mineralogy, they require different methods of extraction (CuNiFe) Saprolite, which has a relatively low iron content, is smelted.
#0183;#32;CVMR#174; developed the process of direct extraction of nickel and iron from laterite ores as metal carbonyls which in turn produced pure nickel and iron metals. CVMR#174;s carbonyl technology has been applied to several types of limonite and saprolite ores
#0183;#32;Some of the world class Nickel Laterite ore deposits have Cobalt, Copper and PGE values. Recovering all these metal values in a single refining step is a major challenge. Carbonyl Vapor Metallurgical process is a viable technology to over come this challenge, and also Feasibility Study shows better economics in refining laterite ore via Carbonyl
#0183;#32;Extraction of nickel and cobalt from a laterite ore using the carbothermic reduction roastingammoniacal leaching process Author links open overlay panel Sadia Ilyas a Rajiv Ranjan Srivastava b c Hyunjung Kim d Nimra Ilyas e 1 Rabia Sattar a 1
The carbonyl method of refining nickel and iron was invented more than 100 years ago and has been used for refining of nickel commercially. CVMR? developed the process of direct extraction of nickel and iron from laterite ores as metal carbonyls which in turn produced pure nickel and iron ?s carbonyl technology has been applied to several types of limonite and saprolite ores
In this study, direct extraction of nickel and iron from laterite ores was investigated in a two step process using CVMR''s carbonyl technology. Iron turns out to be an important product of this process, increasing the cash flow and decreasing costs of disposal of the tailing.
Using CVMR Carbonyl Technology Nickel and Iron in laterite ore can be refined economically and concentrate PGM, if there are any. Education September 1994 May 1999
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