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atmospheric pressure, iron is precipitated with limestone, , This latest solution, the Outotec Nickel Matte Chloride Leaching Process, is suitable for nickel refining and is a highly flexible, calcium chloride based processing route , to an ammonia solution, which is recycled for use as a...
producing matte (copper-iron sulfide), and con-verting for production of blister copper, which is , the addition of natural gas, propane, ammonia, or wood The fire-refined copper is cast into an- , acid to extract the copper These processes can operate at atmospheric pressure or as pressure leach circuits Copper is recovered from ....
Outotec, in fact, said it has constantly been developing new, sustainable, and economically viable nickel processing methods--and its nickel matte chloride leaching process is designed to leach matte In atmospheric OKTOP reactors using hydrochloric acid and oxygen, as well as ammonia for pH control...
This study reports the influence of concentration of the solvent (ammonia), leaching temperature, leaching time, and pH on the recovery of nickel and copper from the matte The elemental composition analysis of the matte indicated that it contains 23% copper, 37% nickel and 11% ferrous compound...
NWK uses the Sherritt-Gordon ammonia leach process to refine nickel matte, in the leaching process and to minimise atmospheric ammonia Download (1698kB) - Murdoch Research Repository various aspects of the acid leaching of nickel matte are investigated using , 13 3 Ammonia -oxygen pressure leach , 1341 SulfUric acid atmospheric ....
The former includes matte smelting, and nodulizing process; The latter includes reduction roasting, atmospheric pressure ammonia leaching, and high-pressure acid leaching, and so on...
The effect of leaching time and ammonia The effect of leaching time and ammonia concentration on the atmospheric NiCu matte containing 23% by mass Cu was used in Read more Efficient and selective recovery of Ni Cu and Co...
Selective Leaching of Nickel From Low-sulfur Ni-Cu Matte at Atmospheric Pressure - Download as PDF File (pdf), Text File (txt) or read online Scribd is ,...
TREATMENT OF NICKEL-COPPER MATTE In the treatment of copper-nickel sulfide ores, separation of copper from the , the Mond atmospheric pressure carbonyl process , Sherritt Gordon uses pressure ammonia leaching on a low-copper, high-nickel sulfide ore concentrate...
atmospheric ammonia leach matte - a1acoza The hydrometallurgical process for laterite ore can use sulfuric acid or ammonia leach, Characterization and kinetic study on ammonia leaching of ,...
The autoclave (15 litre) was purchased to leach matte phase for the scale , Giga-fren Along with the mixed solution, air and ammonia are added to the autoclav In the autoclaves, at elevated temperature and pressure, the leach reactions occur cordis Atmospheric heap leaching does not rely on autoclave technology and was therefore ....
atmospheric ammonia leach matte - rijurajfoundationorg falconbridge matte leach process dec atmospheric leaching of a saprolytic nickel , in the hydrometallurgical ammonia leach , the process involves leaching the nickel Get More Info; leaching of copper from tailings using ammonia...
Atmospheric acid leaching of nickel-copper matte from Impala Platinum Refineries The pre-leach stage in the second process route alternative, described above, is the subject of this study...
and ammonia leaching has been based on local conditions or the composition of the matte Acid leaching has been used for mattes with , The atmospheric leaching of copper-bearing matte by acidic ferric chloride solution was studied at the laboratory scale The aim was to achieve...
Cobalt extraction refers to the techniques used to extract cobalt from its ores and other compound or , and then melted in a reducing atmosphere , The hydrometallurgical process for laterite ore can use sulfuric acid or ammonia leach solutions...
atmospheric ammonia leach matte - The effect of leaching time and ammonia concentration on the atmospheric leaching, leaching time from 0 to 300 min Ni-Cu matte, leaching with 2 M ammonia [Get Info] Atmospheric acid leaching of nickel-copper matte from, Get A Free Quote...
Boyd Willis Hydromet Consulting Sp S on S so S red S October 29, 2014 , Flowsheets: HPAL, Atmospheric Leach (saprolite) / Direct Nickel (nitric acid) Çaldaĝ Nickel Project, Çaldaĝ, Turkey , Flowsheet: Ammonia leach of nickel matte, Hydrogen Reduction, Nickel Briquett...
Aug 30, 1983· In this connection the atmospheric leaching of mattes is known and is described for example in a paper entitled, "Atmospheric Leaching of Matte at the Port Nickel Refinery" by Llanos et al, which appeared in the CIM Bulletin, February, 1974, pages 74-81...
Low copper mattes are treated through direct nickel matte electrolysis and by atmospheric and pressure sulphuric acid leach process the copper may be precipitated from the solution as a ,...
A process for separately recovering platinum group metal values, nickel values and copper from nickel-copper-iron sulphidic matte containing platinum group metals includes leaching ground matte at atmospheric pressure in acidic nickel-copper sulphate solution at a temperature in the range of from about 75° to about 105° C and at a pH below about 4 initially under oxidizing conditions and ....
a leaching finely divided particles of said matte in a first stage leach under an oxygen overpressure above about 10 psig and at a temperature above about 210F in an aqueous acid sulphate solution having a pH in the range of about 25 to about 50; continuing said first stage leach to effect preferential extraction of a major portion of the ....
Atmospheric oxidative and non-oxidative leaching of Ni-Cu matte by acidified ferric chloride solution by LM Sekhukhune*, F Ntuli*, and E Muzenda*...
An innovative process is proposed to directly leach the high-iron cobalt matte at atmospheric temperature and pressure Iron is selectively removed during the leaching process and nickel and cobalt are recovered from the leachate with copper remaining in the leach residue...
reported that, copper from Cu matte can Ni-easily been leached by using ammonia at atmospheric condition Ammonia leaching is also selective in that it will not , Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore Kalanga Gracias Tshilombo, AF Mulaba-Bafubiandi ....
Autoclave Leaching of Copper Nickel Matte , From these atmospheric pressure leach results, it appears that Know More Copper Smelting - IFC , Nickel Smelting and Refining nickel matte and concentrate sulfate Various processes areused to treat nickel matte One process is the ammonia ,...
NICKEL MATTE CHLORIDE LEACHING - outotec atmospheric pressure, iron is precipitated with limestone, , This latest solution, the Outotec Nickel Matte Chloride Leaching Process, is suitable for nickel refining and is a highly flexible, calcium chloride based processing route , to an ammonia solution, which is recycled for use as a...
Nickel Smelting and Refining Industry Description and Practices Primary nickel is produced from two very dif- , to the furnace to produce a matte for processing , leach are also used Ammonia leach is usually applied to the ore after the reduction roast step Sulfidic Ore Processing Flash smelting is the most common process in modern ....
Jun 13, 1978· A problem in the atmospheric leaching of nickeliferous matte under oxidizing conditions is that the leaching characteristics of matte tend to vary from composition to composition, whether the matte contained high or low sulfur, high or low iron and whether the matte was in the as-cast or granulated state...
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atmospheric ammonia leaching process with oxygen as the oxidizer; , acid pre-leaching of low-nickel matte, and ammonia leaching of the acid pre-leaching , Get More Info A study on the oxidative ammonia/ammonium sulphate ....