this electrolytic leach process will recover virtually all
A hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the sulfidic flotation concentrate in an acid solution, and subjecting the slurried flotation concentrate to a chlorine leach at atmospheric pressure followed by an oxidative pressure leach.
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US7968065B2 - Process for the recovery of value metals ...
A process for leaching a value metal from a base metal sulfide ore, comprising the step of leaching the ore with a lixiviant comprising a chloride, an oxidant and hydrochloric acid is disclosed. The leaching is controlled, by use of low concentrations of hydrochloric acid and a redox potential, to effect formation of hydrogen sulfide from the base metal sulfide ore.
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[PDF] Past, Present and Future of Process Control at ...
MIC celebrates its 30th anniversary in 2009 and Xstrata Nikkelverk celebrates its 100th anniversary in 2010. Both anniversaries are certainly worth celebrating and with this article Xstrata Nikkelverk salutes MIC at this special occasion. This article is about process control developments at Xstrata Nikkelverk during the last 40 years. We also give an overview of the current status and a view ...
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Canada acid-leaching process - Big Chemical Encyclopedia
Falconbridge Also called the matte leach process. A process for extracting copper and nickel from matte (a sulfide ore that has been roasted to remove most of the sulfur). Most of the nickel is leached out with hydrochloric acid and recovered as nickel chloride crystals. The leach residue is roasted and leached with sulfuric acid to dissolve ...
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The Falconbridge matte leach process - NASA/ADS
adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A
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ASSESSING THE PERFORMANCE AND CAPACITY OF MATTE …
The leaching of Ni from the matte takes advantage of the formation of a solid intermediate in order to affect the primary separation between Ni and Cu in the base metal refinery. The first step in the leaching process is the leaching of heazelwoodite, Ni3S2, and the formation of chalcocite, Cu2S, in the metathesis reaction. This reaction is
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(PDF) Falconbridge matte leach process Download Book
The. The Falconbridge Matte Process (Thornhill et al., ) has not been used on mineral concentrates, but has been very successful in leaching cupriferous smelter matte (rich in Ni3S2) with 8 M HCI and is a most elegant process. The obvious acid leaching process, viz. digestion with acid to produce H2S and a nickel salt, has not been used at all.
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The Falconbridge matte leach process | Semantic Scholar
DOI: 10.1007/BF03355711 Corpus ID: 138055283. The Falconbridge matte leach process @article{Thornhill1971TheFM, title={The Falconbridge matte leach process}, author ...
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Separation of nickel from copper in autoclave by ...
The process of U.S. patent 3,652,265 (Marschik et al.) utilizes an oxidative acidic pressure leach by treating ground matte and sulphur together with oxygen injection in an autoclave. This process, however, produces sulphuric acid and the nickel is dissolved in the form of sulphates, together with substantial amounts of highly soluble copper ...
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Hydrometallurgy
is the Falconbridge Matte Leach Process, which in volves hydrochloric acid dissolution of nickel from matte, followed by solution purification via solvent extraction, hydrolysis of the chloride, and hydrogen reduction of the oxide.7 The plant described is capable of producing 15 million lb of nickel per year.
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Falconbridge Matte Leach Process
Falconbridge Matte Leach Process. Process flow diagram for acid leaching of nickel sulphide concentrates. taining mainly nickel and magnesium. The iron precipitate filters very readily, though some electrolyte addition to the wash liquors is needed with chloride solutions to prevent peptization. ...
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Falconbridge Matte Leach Process
The Falconbridge matte leach process - Harvard … Falconbridge Limited was a Toronto, Ontario-based natural resources company with operations in 18 countries, involved in the exploration, mining, processing, and marketing of metal and mineral ...
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The Nikkelverk operations
Matte leaching; Precious metals . From these areas, the different products are sent for finishing treatment, cutting and packaging before they are shipped out to the world market. Nikkelverk was the first plant in Norway to install computerised process control.
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Xstrata Nickel - Nikkelverk
The granulated matte is crushed to a very fine powder and then transported to the chlorine leach plant. The metals contained in the matte are separated and distributed to the various process areas for further purification and refining. From there, the products are cut, packaged and shipped to world markets.
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falconbridge matte leach process - rachunkowosc-slask.pl
The Falconbridge Matte Process (Thornhill et al., 1971) has not been used on mineral concentrates, but has been very successful in leaching cupriferous smelter matte (rich in Ni3S2) with 8 M HCI and is a most elegant process. The obvious acid leaching process, viz. digestion with acid to produce H2S and a nickel salt, has not been used at all ...
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Don Shane - Manager of Hydrometallurgy - XPS (a Glencore ...
Specialist - Smelting and Refining Budgeting and Production Planning. Vale. 2010 - 20122 years. Corporate Office Toronto, Ontario, Canada.
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Operating Experiences With A Pilot Plant For the ...
You have no items in your shopping cart. Previous. About Us
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Nickel Matte Chloride Leaching Process - Outotec
The Outotec Nickel Matte Chloride Leaching Process provides a reliable and environmentally sustainable processing method for various nickel-containing raw materials. Our process utilizes highly effective Outotec atmospheric chloride leaching coupled with our world-renowned VSF solvent extraction and electrowinning technology.
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COBALT PROCESSING DEVELOPMENTS K G Fisher Bateman ...
• sulphate oxidative leach, e.g. Outokumpu; • chlorine leach as practised at Xstrata Nikkelwerk (ex Falconbridge/ Kristiansands) where the cobalt is recovered by chloride electrowinning; • electro-refining of nickel matte anodes (Jinchuan and Inco, Thompson); • electro-refining of impure metal (Russia).
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Nickel processing - Extraction and refining | Britannica
Various processes are used to treat nickel matte. One process is the ammonia pressure leach, in which nickel is recovered from solution using hydrogen reduction, and the sulfur is recovered as ammonium sulfate for use as fertilizer.In another, the matte may be roasted to produce high-grade nickel oxides; these are subjected to a pressure leach, and the solution is electro- and carbonyl refined.
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PRODUCTION
Falconbridge Matte Chlorine Leach Process . 18 : 11.2.3 . Outokumpu Sulphate Leach Process : 18 . 11.2.4 : Sulphuric Acid Pressure Leach Process . 18 : ... FALCONERIDGE MATTE CHLORINE LEACH PROCESS 86 . 24 . OUTOKUMPU SULPHATE LEACH PROCESS 88 . 25 SULPHURIC ACID . PRESSURE LEACHING 89 . 26 . INCO LTD. PRESSURE CARBONYL PROCESS 90
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falconbridge matte leach process - spoorzeukers.nl
FALCONBRIDGE LIMITED ... leach and electrowinning process developed by ... at the copper oxide leaching plant. Falconbridge's share of the ... The leaching characteristics of Ni–Cu matte ... - DeepDyve . Read "The leaching characteristics of Ni–Cu matte in the acid–oxygen pressure leach process at Impala Platinum" on DeepDyve - Instant ...
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waste heaps from mining and processing
Waste Heaps From Mining And Processing. Waste Characteristics The volume of solid waste generated, including tailings from processing, is one of the main pollution concerns in the mining industry Removal of overburden to access the ore can pose major problems in storage and reclamation The overburden (wastetoore) ratio for surface mining of metal ores generally ranges from 2:1
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US Patent for Leaching of copper-nickel concentrates ...
Probably the most successful method of treating such concentrates to date is by the Falconbridge matte leach process which is used on a commercial scale in Norway. This process involves the use of very strong hydrochloric acid (of the order of 275g/1 HCl) in order to selectively dissolve nickel and the nickel chloride is then removed by ...
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TABLE OF CONTENTS FOREWORD (i) ACKNOWLEDGEMENTS (iii)
B.2 Falconbridge Matte Chlorine Leach Process 86 B.3 Outokumpu Sulphate Leach Process 87 B.4 Sulphuric Acid Pressure Leaching 88 B.5 INCO Ltd. Pressure Carbonyl Process 90 B.6 INCO Ltd. Matte Separation Process - Production of Nickel Oxides and Incomet 91 B.6.1 Matte …
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Past, Present and Future of Process Control at Xstrata ...
the hydrometallurgical matte leaching (ML) (Thorn-hill et al.,1971) and chlorine leaching (KL) (Stensholt et al.,1985) processes in the 1960's and 70's the ap-plication of automation and process control exploded. As of today, only the KL process is used at Xstrata Nikkelverk. In this paper we will take a …
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(PDF) Atmospheric chloride leaching: The way forward for ...
"The Falconbridge Matte Leach Process", Journal of Metals, 23 (7), (1971), p. 13. ... When first presented, it seemed that Jaguar Nickel's Atmospheric Chloride Leach Process (ACLP) might be ...
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Case No COMP/M.4000 INCO/FALCONBRIDG E
However, in some cases, existing facilities may be used to process intermediate products after transportation (instead of investing in a new facility)6. (18) The output of the smelting and leaching stages is intermediate nickel products, such as nickel carbonate, nickel hydroxide, nickel matte, mixed nickel-cobalt sulphide and nickel oxide.
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The Falconbridge Matte Leach Process - Google Books
The Falconbridge Matte Leach Process. Falconbridge Nickel Mines Limited - Leaching - 10 pages. 0 Reviews. What people are saying - Write a review. We haven't found any reviews in the usual places. Bibliographic information. Title: The Falconbridge Matte Leach Process: Contributors:
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Michael Sudbury: Metallurgical History
Norway Refinery: The search for a new more efficient and economic refining process was started at Falconbridge with many alternatives investigated initially. This led to the development of the Matte Leach Process employing hydrochloric acid to leach the matte selectively solubilizing the nickel. The acid nickel chloride solution, after solvent ...
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Recover PGM by Matte Smelting and Leaching
The Falconbridge Matte Leach Process involves selective leaching of nickel from a Cu-Ni-PGM matte with strong HCl at atmospheric pressure. The nickel is solubilized, while the copper and PGM remain as a sulfide residue. Nickel is precipitated as NiCl2·2H2O, which is converted to NiO by high-temperature hydrolysis. ...
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Refining of Nickel Copper Cobalt Mattes by Pressure ...
The process of smelting to produce matte rejects a large proportion of the iron, and the sulphur associated with it. When producing a matte for refining by these processes, the iron content can advantageously be lowered to the minimum consistent with good recovery of base metals in the matte. During leaching, iron must be oxidized and this ...
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Extraction studies of cobalt (II) and nickel (II) from ...
The Falconbridge matte leach process for the recovery of nickel from matte containing copper, iron and nickel is treated with concentrated hydrochloric acid in order to dissolve nickel selectively, leaving copper and other metals in the insoluble sulphide form.
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US20050118081A1 - Process for the recovery of value metals ...
A process for leaching a value metal from a base metal sulfide ore, comprising the step of leaching the ore with a lixiviant comprising a chloride, an oxidant and hydrochloric acid is disclosed. The leaching is controlled, by use of low concentrations of hydrochloric acid and a redox potential, to effect formation of hydrogen sulfide from the base metal sulfide ore.
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