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Matte Leaching Process

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Method Of Leaching Of Nickelcopper Matte

Therefore, in the first stage leaching process described in this invention, instead of the acidic environment created conditions when matte is leached in a neutral solution of Nickel sulfate containing sulphate of copper, so the copper sulfate contained in the solution, videlicet Nickel contained in the matte.Therefore, in the first stage leaching process described in this invention, instead of the acidic environment created conditions when matte is leached in a neutral solution of Nickel sulfate containing sulphate of copper, so the copper sulfate contained in the solution, videlicet Nickel contained in the matte.An alternative leaching process of using matte is suggested. Cobalt concentrates are first converted to matte, enriching their major elements of Co, Cu and Fe, and the matte is treated by sulfuric acid pressurized leaching. The Co concentrate includes Co oxides as valuable minerals, whereas Co, Cu and Fe exist predominantly as sulfides in the ...The leaching behaviour of nickel-copper matte in an acidic-copper sulphate solution during the repulping stage at Impala Platinum Refineries has been studied. The base metal recovery process consists of a matte repulping stage prior to a series of pressure leach stages. Therefore, the repulping stage is basically an atmospheric leach stage in ...

Extraction Of Valuable Metals From Low Nickel Matte By

converting process, which has a high efficiency and low cost is used to treat sulfide ores 68. Recently, recovery of Ni, Cu, and Co from low nickel matte has been studied via hydrometallurgical processes such as atmospheric pressure acid leaching, ammonia leaching, oxygen pressure acid leaching and oxidative leaching 9,10.converting process, which has a high efficiency and low cost is used to treat sulfide ores 68. Recently, recovery of Ni, Cu, and Co from low nickel matte has been studied via hydrometallurgical processes such as atmospheric pressure acid leaching, ammonia leaching, oxygen pressure acid leaching and oxidative leaching 9,10.A process for leaching comminuted nickeliferous sulfide matte containing by weight about 20 to 75 nickel, about 5 to 50 copper, over 0.5 to 20 iron, and optionally small amounts of cobalt, and non-stoichiometric sulfur ranging from over 4 to 24, the sum of the nickel, copper and sulfur contents being at least about 80 which comprises,The pressure leaching experiments, which were aimed at investigating the response of pre-leached matte to the subsequent pressure leaching process, showed that Ni extractions were similar for the investigated pre-leach temperature of 50 80 oC and stirring rate of 145 400 rpm. For the pre-leach stage conditions of 60 80 oC

Minerals Free Fulltext Worth From Waste Utilizing A

In the DON process, the electric furnace matte is leached in a separate EF matte leaching circuit in the nickel refinery. The process consists of two leaching steps in which nickel, cobalt, and copper are leached, whereas iron is precipitated in a controlled way 42 .In the DON process, the electric furnace matte is leached in a separate EF matte leaching circuit in the nickel refinery. The process consists of two leaching steps in which nickel, cobalt, and copper are leached, whereas iron is precipitated in a controlled way 42 .leach addition. 2. Recent nickel laterite projects 2.1. Existing state-of-the-art Nickel laterites are currently processed with the exception of the hybrid Caron process by either a Pyrometallurgical or a Hydrometallurgical route. Most pyrometallurgical routes ferronickel and matte smelting use a conventional ow sheet which includes steps ...Kinetic parameters for the process of sulfatization roasting and leaching of copperlead matte Duan Mini , Nada trbac , Ivan Mihajlovi , Desimir Petkovi , ivan ivkovi 0 0

Solvometallurgical Process For Extraction Of Copper From

A kinetic study showed that the leaching process was a surface chemical controlled process and the apparent activation energy was calculated to be 60.1 kJ mol 1. Subsequently, electrodeposition of copper from the pregnant leachate was investigated, and SEM-EDX analysis showed that uniform cubic crystalline deposits of pure copper were produced.A kinetic study showed that the leaching process was a surface chemical controlled process and the apparent activation energy was calculated to be 60.1 kJ mol 1. Subsequently, electrodeposition of copper from the pregnant leachate was investigated, and SEM-EDX analysis showed that uniform cubic crystalline deposits of pure copper were produced.Nov 23, 2020 Lead was selectively leached from the residues matte and slag of a secondary lead smelter using EDTA as lixiviant. The residues were composed mainly of iron 3466 wt and lead 711 wt. 100 of the lead was leached with less than 2 of the iron co-dissolved, using a multi-step leaching process where the leaching residues were contacted three times by a fresh EDTA solution.Leaching Pregnant Ieachate 20-50 Cu Precipitation Solvent extract ion I Smelting I I Cement copper 1 85-90 Cu Matte 50-75 Cu II I Converting i Anode refining and casting I I I Anodes 99.5 Cu I Cathodes 99.99 Cu SOURCE Office of Technology Assessment. opment of the mines of Cumberland and North Wales. When the Remans left ...

Atmospheric Oxidative And Nonoxidative Leaching Of Ni

The leaching process was found to be diffusioncontrolled. AB - The atmospheric leaching of copper-bearing matte by acidic ferric chloride solution was studied at the laboratory scale. The aim was to achieve maximum copper and nickel recovery by investigating the mechanisms of leaching, as well as identifying the effect of temperature, and ...The leaching process was found to be diffusioncontrolled. AB - The atmospheric leaching of copper-bearing matte by acidic ferric chloride solution was studied at the laboratory scale. The aim was to achieve maximum copper and nickel recovery by investigating the mechanisms of leaching, as well as identifying the effect of temperature, and ...The mineralogical changes and reaction mechanisms occurring in the Impala Platinum acid-oxygen pressure leaching process of Ni-Cu matte were postulated. The complex interactions of the various minerals with one another were clarified by considering the change in the mineral species during the leaching process.The leaching behaviour of nickelcopper matte in an acidiccopper sulphate solution during the repulping stage at Impala Platinum Refineries has been studied. The base metal recovery process consists of a matte repulping stage prior to a series of pressure leach stages. Therefore, the repulping stage is basically an atmospheric leach stage ...

Selective Leaching Of Nickel From Lowsulfur Nicu Matte

Abstract A process of the selective leaching of nickel from low-sulfur Ni-Cu matte at atmospheric pressure was described. This matte was obtained from high grade Ni-Cu matte by magnetic separation, which mainly contained Ni-Cu alloy and a small quantity of sulfides. Firstly, the acid-oxygen CuSO 4 -H 2 SO 4 -O 2 leaching of the matte was conducted at atmospheric pressure.Abstract A process of the selective leaching of nickel from low-sulfur Ni-Cu matte at atmospheric pressure was described. This matte was obtained from high grade Ni-Cu matte by magnetic separation, which mainly contained Ni-Cu alloy and a small quantity of sulfides. Firstly, the acid-oxygen CuSO 4 -H 2 SO 4 -O 2 leaching of the matte was conducted at atmospheric pressure.Lead was selectively leached from the residues matte and slag of a secondary lead smelter using EDTA as lixiviant. The residues were composed mainly of iron 3466 wt and lead 711 wt. 100 of the lead was leached with less than 2 of the iron co-dissolved, using a multi-step leaching process where the leaching residues were contacted three times by a fresh EDTA solution.Leaching Ecological Behavior of Indium from Lead-Containing Copper Matte Using Oxidation Roasting - Leaching Process. Dafang Liu, Xingxiang Fan, Yifeng Shi, Kunbin Yang. Ekoloji, 2018, Issue 106, Pages 667-676, Article No e106123 OPEN ACCESS Download Full Text PDF Abstract. Lead-containing copper matte LCCM is an ecologically intermediate ...

Ph Advanced Process Control Solution J For Impala Bmr

the first stage leach process together with process chemistry and the process challenges. Process description Figure 2 shows a flow diagram of the first stage leach process. The matte from the mineral processing plants is fed with deminer-alized water to the ball mill to increase the surface area of the particles for leaching. Tankthe first stage leach process together with process chemistry and the process challenges. Process description Figure 2 shows a flow diagram of the first stage leach process. The matte from the mineral processing plants is fed with deminer-alized water to the ball mill to increase the surface area of the particles for leaching. TankVarious 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.Mar 26, 2008 Abstract. A review of the literature over the past 30 years on the processing of nickel laterites by high temperature acid leaching has been carried out to provide a better understanding of the mineralogy, leaching process chemistry and effect of operating conditions on nickel recovery, residue properties and scaling.

Platsol Process Provides A Viable Alternative To

SGS MINERALS SERVICES TECHNICAL PAPER 2002-01 2002 PLATSOLTM PROCESS PROVIDES A VIABLE ALTERNATIVE TO SMELTING ChRIS A. FLEMING, SENIOR METALLuRGICAL CONSuLTANT SGS PlatsolTM is a new single step, pressure leaching process developed at SGS by International PGM Technologies to recover platinum group metals PGMs, gold and base metalsSGS MINERALS SERVICES TECHNICAL PAPER 2002-01 2002 PLATSOLTM PROCESS PROVIDES A VIABLE ALTERNATIVE TO SMELTING ChRIS A. FLEMING, SENIOR METALLuRGICAL CONSuLTANT SGS PlatsolTM is a new single step, pressure leaching process developed at SGS by International PGM Technologies to recover platinum group metals PGMs, gold and base metalsCopper processing - Copper processing - Roasting, smelting, and converting Once a concentrate has been produced containing copper and other metals of value such as gold and silver, the next step is to remove impurity elements. In older processes the concentrate, containing between 5 and 10 percent water, is first roasted in a cylindrical, refractory-lined furnace of either the hearth or ...Nickel matte with a 70 nickel grade, procured from mines and smelters that we have a stake in, and mixed sulfide with a 60 nickel grade produced in Coral Bay, using the HPAL High Pressure Acid Leach process is used as raw material. Production Process of Electrolytic Nickel

The Leaching Characteristics Of Nicu Matte In The Acid

Jun 01, 1999 A study has been carried out to elucidate the leaching mechanism of NiCu matte in an acidoxygen CuSO 4 H 2 SO 4 O 2 pressure leach process at Impala Platinum Refineries.This process is based on the initial Sherritt Gordon process at aJun 01, 1999 A study has been carried out to elucidate the leaching mechanism of NiCu matte in an acidoxygen CuSO 4 H 2 SO 4 O 2 pressure leach process at Impala Platinum Refineries.This process is based on the initial Sherritt Gordon process at aABSTRACT OF THE DISCLOSURE A finely-ground nickel-copper matte is leached using an acid at a minimum temperature of approx. 80 C and under oxidizing conditions in order to produce a nickel sulfate solution and a nickel-copper sulfide residue, which is separated from the solution and thereafter the nickel-copper sulfide residue is leached using acid in an autoclave at a minimum temperature of ...Mar 12, 1999 If the process deals with essentially metallized matte coming from a further processing furnace located in succession to the smelting furnace, the leach thereof it is carried out as one stage in the leach process, and the copper and nickel bearing solution obtained from this stage is conducted to the last oxidation stage.

Acid Leaching Process For Treating High Grade

Nickel and copper values are separately recovered from copper-nickel-sulphide matte by means of a multi-stage acid leach process. The matte is treated in a first leaching stage in which the acid to acid-reactive metals molar ratio and leaching time are controlled to selectively extract the bulk of the nickel values while the copper values remain in the leach residue.Nickel and copper values are separately recovered from copper-nickel-sulphide matte by means of a multi-stage acid leach process. The matte is treated in a first leaching stage in which the acid to acid-reactive metals molar ratio and leaching time are controlled to selectively extract the bulk of the nickel values while the copper values remain in the leach residue.May 01, 2021 1. Introduction. The global production of nickel is largely based on nickel sulphide minerals 60 with pyrometallurgical converting into matte, followed by a hydrometallurgical process with unit processes such as leaching atmospheric andor pressure, iron removal, solvent extraction SX for cobalt and nickel and final product recovery, typically by electrowinning EW, hydrogen ...Claim 1. A continuous process for separating and recovering copper and nickel values contained in substantially non-magnetic nickel-copper matte, said process including leaching finely livided particles of said matte in a first-stage pressure leach under an initial oxygen ovea-ressure of above about 10 psig and at a temperature above about 100 0 C in an aqueous acid sulphate solution having a ...

Overview Of Pgm Processing

Process mixed low grade conc. matte converting Refractory conc. penalties c. 15 MgO, 2-6 Cr 2 O 3 High temperature capability 1400 C Mixed low grade, solid Refractoriness capability 0.5-5 Cr 2 O 3 High process temperature capability 1300 C Sulphur fixation WholeSlow-cool matte leachProcess mixed low grade conc. matte converting Refractory conc. penalties c. 15 MgO, 2-6 Cr 2 O 3 High temperature capability 1400 C Mixed low grade, solid Refractoriness capability 0.5-5 Cr 2 O 3 High process temperature capability 1300 C Sulphur fixation WholeSlow-cool matte leachThe complete process of extraction consists essentially of enriching this matte to approximately 65 per cent content of platinum metals and then treating this concentrate with acids to separate the individual platinum group metals from each other, followed by final refining. Operations to achieve this can roughly be divided under three headingsFeb 13, 2021 The leaching mechanism of the arsenic matte was studied by placing a block samples from factory production 1 cm 1 cm 1 cm in a toxic leaching solution that is, A mixture of sulfuric acid and nitric acid with a mass ratio of 21 is added to deionized water, about two drops in 1L water, to give a pH of about 3.2 and allowing them to ...

Efficient And Selective Recovery Of Ni Cu And Co From

Apr 29, 2016 By introducing an acid pre-leaching process into the oxidative ammonia leaching process, we achieved the high extraction efficiencies of 98.03, 99.13, and 85.60 for the valuable metals Ni, Cu, and Co, respectively, from the low-nickel matte.Apr 29, 2016 By introducing an acid pre-leaching process into the oxidative ammonia leaching process, we achieved the high extraction efficiencies of 98.03, 99.13, and 85.60 for the valuable metals Ni, Cu, and Co, respectively, from the low-nickel matte.In total, the leaching process takes about 10 to 15 hours to complete. The leaching residue weight is about 25 of that of the matte fed into the process. Iron is precipitated using slaked lime or limestone at around pH 2 while oxygen is fed to the reactors. Under these conditions, iron precipitates as goethite.