Copper-nickel. The addition of copper to nickel provides a series of useful alloys. Monel metal, 67 percent nickel and the balance essentially copper, is stronger than nickel and has broad corrosion-resisting applications. Extremely resistant to rapidly flowing seawater, it has many marine uses.
Use this simple metal equivalents calculator to calculate common (and uncommon) equivalences. For each metal select the grade and the market price to be used in the calculations. You may also select a recovery %, the amount of assayed material that can actually be recovered during processing of the ore.
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— ...
When the preliminary feasibility study of a mineral project has not been completed yet, but you do want to estimate the mineral deposit value, you can calculate the potential value of a mining project by the back-of-the-envelope calculation described in this article.
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.
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.
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
Similarly, increasing the target matte grade requires the rejection of more iron and an increase in the slag volume. Thus, the two factors that most affect the loss of copper to slag in the smelting stage are: matte grade; mass of slag. This means that there is a practical limit on how high the matte grade can be if the loss of copper to slag ...
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 …
The exploration model developed by Crystal Mining's partner Emerald Lake Development Corp., is to explore for massive sulphide bodies which may occur below the disseminated low-grade copper-nickel-cobalt mineralization. In late 2015 the Company drilled in total 6,100 feet (1,860 meters) in 10 holes.
Falconbridge Nikkelverk A/S sequentially treats high grade precious metal copper nickel mattes with HCI and chlorine, producing a precious metal concentrate having a bulk no greater than 1% of the original matte.
Feb 18, 1986· This invention relates to the separate recovery of platinum group metal values, nickel values and copper from nickel-copper-iron sulphidic matte containing platinum group metals such as platinum, palladium, rhodium, ruthenium, osmium and iridium.
In the entire matte leaching process, nickel and copper are leached from the converter matte, leaving the PGMs in the insoluble residue. This residue is treated to remove copper, nickel, iron, selenium, and tellurium and transferred to precious metals refinery. Finally, individual metals are separated and refined to high-purity products for sale.
6 Copper Ores Bio Leaching Nickel Copper es.scribd.com Base metals bioleaching Bioleaching may be used as an alternative process for extraction and recovery of other metals like Nickel Zinc Cobalt Molybdenum These metals occur in significant quantities in sulfidic ores (polymetallic ores) .
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.
11 Influence of Matte Grade on Energy and Industrial Oxygen Requirements for Steady-State Smelting 11.1 Calculations and Results 11.2 Effect of Matte Grade on Oil, Blast Preheat and Industrial Oxygen Requirements 11.3 Physical Explanation of Matte Grade Effects 11.4 Oil, Industrial Oxygen, Blast Preheat Trade-offs
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 ...
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.
A matte grade higher than 77% leads to higher soluble copper in slag in the oxidic form, whereas operating at a matte grade lower that 70% leads to moderate copper levels in slag, predominantly in the form of soluble sulfidic copper. 18 In the BBS process, the operating matte grade is in a range where the lowest soluble losses are observed ...
How to calculate grade and recovery concentrate? In the process of ore dressing percentage, the percent of quality of a product obtained and quality of raw ore, known as the yield rate of product. Product yield calculation formula is as follows:
DC-arc furnace technology has been successfully applied to the recovery of cobalt, nickel, and copper from non-ferrous furnace and converter slags. Pilot-plant testwork at Mintek has demonstrated recoveries of 98% for nickel and over 80% for cobalt, at power levels of up to 600 kW.
The remaining nickel matte is transported, principally by rail, to Western Nickel's Kwinana nickel refinery, a distance of approximately 650 kilometres. The nickel matte is processed into nickel metal in the form of LME grade briquettes and nickel powder, together with a range of saleable by-products.
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 processing, the extraction of copper from its ores and the preparation of copper metal or chemical compounds for use in various products. In its pure form or as an alloy, copper (Cu) is one of the most important metals in society.
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.
Oct 06, 2017· ores is through the production of nickel matte after enriching the nickel content of the ore. This is com- monly carried out by magnetic separation, flotation,. ... Increase in nickel recovery and grade with copper sulphate dosage was Froth flotation Pentlandite Pyrrhotite Chalcopyrite Copper sulphate activation.
which is periodically removed and discarded. Copper matte remains in the furnace until tapped. Matte ranges from 35 to 65 percent copper, with 45 percent the most common. The copper content percentage is referred to as the matte grade. The 4 smelting furnace technologies used in the U. S. are reverberatory, electric, Noranda, and flash.
Improving Copper Recovery from Production Slags by Advances Stirring Methods Proceedings of EMC 2011 3 treated in the existing copper extraction route or separately in a subsequent reactor the slag phase can be used as construction material for example. 1.2 Conventional pyrometallurgical copper …