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Feb 18, 1986· Recovery of platinum group metals from nickel-copper-iron matte ... the usual commercial procedure is to concentrate and smelt the ore to form a high grade nickel-copper-iron sulphidic matte from which the contained platinum group metals must be recovered in a form suitable for treatment in a platinum metal refinery. ... which may be ...
Modern flotation plants focus on maintaining continuous steady-state operation while maximizing the recovery of nickel and the concentrate grade. Recent developments are quantitative electron microscope analysis of ores and concentrator process streams and flash flotation. ... Norway, uses chloride chemistry to refine nickel–copper matte. The ...
The matte (copper-iron sulfide) from the ... low grade deposits in situ or as heaps. Recovery of copper metal and alloys from ... contain lead, zinc, nickel and other metals—and whether facilities are in place for capturing and converting the SO2. Sulfur dioxide emissions
Flash Smelting is a natural choice for higher-grade copper concentrates due to its lower capital investment costs. Outotec Direct Nickel Flash Smelting (DON) This process enables high-grade nickel matte to be produced using a single flash smelting furnace. It allows higher recovery of nickel, cobalt, and precious metals than
A high-grade nickel concentrate is produced from these ores by the following minerals-processing techniques: ... The converting step consists of oxidizing the liquid matte with air to obtain blister copper (an impure form of copper). ... This concept was adopted in Leinster nickel concentrator which has reported 5% nickel recovery increase and ...
Copper nickel can be get from raw ore, then the copper concentrate with low grade nickel and the nickel concentrate with low grade copper can be separate from the mixing concentrate, the nickel concentrate will be sent into the next stop-smelting, nickel matte can be get then separated.
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.
Coins of nickel-copper alloy were minted by the Bactrian kings Agathocles, ... Nickel ores grade evolution in some leading nickel producing countries. ... sulfide ores are concentrated with flotation (differential flotation if Ni/Fe ratio is too low) and then smelted. The nickel matte is further processed with the Sherritt-Gordon process.
Part Four Competitiveness ... Some mines have a cap of high grade ore bJanice L.W. Jolly, "Copper," Mineral Facts and Problems, 1985 edition (Washington, DC: U.S. Department of the Interior, Bureau ... gold, or silver, and sometimes nickel or cobalt are also extracted from copper ore. These min-erals can be either byproducts or co-products.
Jul 26, 1994· The high-grade nickel matte created in the flash smelting furnace can also be recirculated into the electric furnace. Accordingly, this method and apparatus for producing high-grade nickel matte makes it possible to eliminate the converter step from the process.
Leaching of nickel-copper matte and recovery of platinum group metals Sherritt's matte leach process uses sulphuric acid leaching in a combination of atmospheric and/or pressure leaching steps to quantitatively dissolve nickel and copper in nickel-copper matte and produce a high-grade platinum group metal (PGM) concentrate for refining.
recovery rate of valuable metals such as nickel, copper, and the compositions of the charges for these test modes were cobalt is lower in the higher-matte-grade range, especially presented in ...
Constitution of bessemer matte Nickel and copper in bessemer matte occur mainly as NiS, and Cu,S. The matte is often about 10 pct deficient in sulfur for these sulfides, and the excess metal occurs in the matte as a nickel-copper alloy. Hayward," in 1915, and Stansfield and Faith," in 1924, developed Ni,S.2-Cu2S phase diagrams, and
In two-stage matte leaching, first-stage h2so4 leaching extracted 99 pct of the nickel and iron from the matte but negligible amounts of copper and PGM. Second- stage oxidative leaching with fe2(so4)3 or fecl3 solubilized more than 98 pct of the copper and no precious metals.
The MCLE* method used at the Niihama Nickel Refinery is a highly acclaimed, superior production technology, and helps achieve world‐leading production efficiency. MCLE : Matte Chlorine Leach Electrowinning. Matte and nickel/cobalt mixed sulfides are dissolved in chlorine, producing high‐grade nickel through electrolysis.
Jun 20, 2018· Nickel. Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous A further 10% is used for nickel-based and copper-based alloys, 7% for alloy steels, 3% in foundries, 9% in plating and 4% in ..
The copper recovery efficiency is over 90 %. About 95 % of ... The blast or shaft furnace is well-suited for smelting high-grade, lumpy copper ore. If only fine -3 of 11- ... The reverberatory furnace dominated copper matte smelting for much of the 1900s, because it was
Copper Smelting Industry Description and Practices ... leaching low-grade deposits in situ or as heaps. Recovery of copper metal and alloys from copper-bearing scrap metal and smelting resi-dues requires preparation of the scrap (e.g., re- ... may contain lead, zinc, nickel, and other metals— ...
This report describes a direct smelting method that removes most of the iron and produces a copper-nickel-cobalt matte, an intermediate product from which the metal values subsequently are separated. Copper, nickel, and cobalt grade and recovery data are presented for the direct smelting method.
Typically this type of Disseminated Ore is seen above and lateral to the higher grade, more massive parts of the system. One of the characteristics of magmatic sulphides is that the individual sulphide grains – like the orebodies as a whole – tend to be zoned having a more copper-rich top and nickel …
The distribution coefficients for nickel, copper and cobalt, as defined by Equation 1, are shown as a function of matte grade (summation of mass percent of nickel, copper and cobalt) in Figure 3 …
The matte was preleached at atmospheric pressure to selectively extract 20 pct of the nickel, and the undissolved solids were referred to as the matte residue. Autoclave leaching of the matte residue extracted over 95 pct of the nickel, copper, and iron. The remaining leach residue in the autoclave contained over 100 oz of precious metals per ton.
Before you can calculate the potential mineral deposit value, you first need to gather some specific data, which I explain on this page. ... you can not assume that the complete ore body contains the same grade (i.e. 2% copper and 1.5 gram per tonne gold). In addition, ...
Calculations using extraction isotherm indicate almost complete recovery of cop- ... 316 Separation of Copper and Nickel by Solvent Extraction Using LIX 664N . ... organic phases for recovery of copper and nickel. The extractant used is LIX 664N.
2004 – Start up of the Sossego copper mine, Brazil 2006 – Acquisition of Inco by Vale 2011 – Start up of the Onça Puma nickel mine, Brazil Start up of the Goro nickel mine, New Caledonia 2012 – Start up of the Salobo I copper mine, Brazil 2014 – Start up of the Long Harbour processing plant, Canada
nickel-copper matte of a low matte grade. The low-grade co-worker have also developed thermodynamic models of mattes from the two types of flash …
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.
and Panias[13] by electro recovery of copper followed by nickel precipitation through neutralization. In this work separation of copper and nickel is carried by selective extraction of copper and nickel at different pH followed by the stripping of the respective loaded organic phases for recovery of copper and nickel. The extractant used is LIX ...