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·fluidized bed oxidation roasting of nickel concentrates DAWEI YU Candidate is with the Department of Materials Science and Engineering University of Toronto 184 College Street
·The extraction of valuable metals from low nickel matte via a calcified roasting acid leaching process was investigated The influences of process parameters on the extraction of metals were
·Use of the method of direct ore processing [7 8] is limited for production and economic version of rational use of pyrite ores may combined processing with oxidized nickel ores [] Reduction sulfiding melting of the latter using the product of partial oxidation firing of copper ore as a sulfiding agent makes it possible to obtain copper nickel matte suitable for
·The purpose of the present study is to prepare ferronickel concentrates by reduction roasting magnetic separation using spent cathode carbon as a reducing agent Nickel carriers in laterite ores and their influence on the mechanism of nickel extraction by sulfation roasting leaching process Miner Eng 2019 W Rong et al Exergy
·The sulfation roasting process has been researched in the past for the treatment of whole nickel sulfide ores and low grade concentrates between the 1960s and 1990s Yu Utigard and Barati 2014a
·AbstractThe smelting behaviour of nickel copper calcines in the electric furnace was studied by a thermogravimetric gas chromatographic technique in conjunction with chemical and micrographic…
·Semantic Scholar extracted view of "Sodium sulfate activation mechanism on co sulfating roasting to nickel copper sulfide concentrate in metal extractions microtopography and kinetics" by Fuhui Cui et al A method is proposed for processing nickel sulfide concentrates based on low temperature roasting with sodium chloride In the course of
·The purpose of the present study is to prepare ferronickel concentrates by reduction roasting magnetic separation using spent cathode carbon as a reducing agent Spent cathode carbon is a new and efficient reducing agent for the reduction roasting process of laterite nickel ores Our study determined that the optimal process parameters
Semantic Scholar extracted view of "Salt roasting of an off grade copper concentrate" by N Ngoc et al A method is proposed for processing nickel sulfide concentrates based on low temperature roasting with sodium chloride In the course of research the dependence of valuable component extraction on
·The low temperature calcination of nickel sulphide concentrates with sodium chloride and subsequent hydrometallurgical processing is a promising alternative methods This study aims to identify the interaction products of sulphide nickel concentrate components with sodium chloride at temperatures of 400 450 °C Roasting of nickel
·The key process requirements for arsenic removal from metal concentrates copper and nickel and ores gold by roasting are summarized from open literature A simple flow diagram is presented for
Sulfation roasting a common activation technique is a potential method for cleaner production of nickel from complex low grade ores In this study nickel oxide sulfide mixed ore concentrate was Expand
The recovery of valuable metals from complex sulfide concentrates was investigated via chlorination roasting followed by water leaching A reaction process is proposed on the basis of previous studies and the results of our preliminary experiments During the process various process parameters were studied including the roasting temperature the addition of NH4Cl
·This paper describes a chloridizing roasting process applied to two types of nickel and copper bearing sulfide concentrates One was copper rich and the other nickel rich The paper gives a full account of the process as investigated in various batch roasters and in multiple hearth and rotary roasters For commercial viability the paper finally examines the
·Keywords extraction; nickel; sulfide; chlorination; ammonium chloride; roasting; leaching 1 Introduction Nickel is a strategic metal that is widely used in stainless steel alloys batteries and catalysts The world s available nickel ore deposits mainly consist of sulfide and laterite and sulfide deposits represent approximately 40wt% of
·The high nickel low iron matte is further refined to recover valuables [13][14][15] The Fe Si O slag on the other hand is mainly comprised of fayalite Fe2SiO4 some ferric oxide Fe2O3 and
Nickel concentrates may be leached with sulfuric acid or ammonia or they may be dried and smelted in flash and bath processes as is the case with copper Nickel requires higher smelting temperatures in the range of 1 350 °C [2 460 °F] in order to produce an artificial nickel iron sulfide known as matte which contains 25 to 45 percent
·19 Keywords Fluidized bed Sulfation roasting Nickel concentrate Pentlandite Leaching 20 21 1 Introduction 22 Currently the roasting electric furnace smelting converting route is used at two nickel smelters in Canada 23 to treat nickel concentrate to produce a nickel rich matte The roasters use air to oxidize the sulfides at
In this study we propose a novel temperature programmed ammonium chloride NH4Cl roasting water leaching process to extract nickel Ni cobalt Co and copper Cu from polymetallic sulfide minerals in a synchronous efficient and environment friendly manner During the roasting process several vital parameters were investigated to achieve the high co
·Roasting of sulfide concentrates under an oxidizing atmosphere to decompose sulfides into their respective oxides prior to leaching has been researched based on adapting the Caron process to treat nickel sulfide ores and concentrates Forward Kudryk and Samis Citation 1948; Queneau Sproule and Illis Citation 1949
·Roasting water leaching experiments were carried out to investigate the influence of the dosage of sodium sulphate on the sulphation roasting of nickel sulphide concentrates Twenty five 25 g of sample A# was divided into five equal portions and oxidized at 600 °C for 2 h in air
·Abstract Facing the situation of nickel resource shortage and increasing nickel demand it is an important task for the development of nickel industry to realize efficient utilization of low grade nickel sulfide ore In this work the process of NaCl roasting water leaching was proposed to simultaneously extract valuable metals from low grade nickel concentrate Based
Data for roasting electric furnace smelting and flash smelting adapted from Crundwell et al 2011c 2011f from publication The Direct Leaching of Nickel Sulfide Flotation Concentrates A
·The low temperature calcination of nickel sulphide concentrates with NaCl at 400 450 °C and subsequent hydrometallurgical processing provide a promising alternative to existing nickel sulphide concentrate processing technologies Roasting of nickel concentrates Metall Mater Trans B Process Metall Mater Process Sci 2010 10
