ammonia used in making copper ore concentrate

Monia Used Making Copper Ore Concentrate - b-r-s.in

Copper - Geoscience Australia. At most Australian mines the traditional method used involves copper sulphide ore being ground finely before the copper-bearing sulphide minerals are concentrated by a flotation process that separates the grains of ore mineral from the waste material.

Nickel Smelting and Refining - IFC

tion with copper-bearing ores, are mined from underground. Following is a description of the processing steps used for the two types of ores. Lateritic Ore Processing Lateritic ores have a high percentage of free and combined moisture, which must be removed. Drying removes free moisture; chemically bound water is removed by a reduction furnace, which also reduces the nickel oxide. Lateritic ...

Molybdenum: mining and processing-Metalpedia

The resulting MoS2 concentrate usually contains 85%~92% MoS2 and small amounts of copper (less than 0.5 percent) if the molybdenum is recovered as a by-product of copper. Further treatment by acid leaching can be used to dissolve impurities like copper and lead if necessary.

Ammonia-Carbon Dioxide Ore Treatment

Solution used in agitation was about 4 :1 ore, due to the small charges used. On a 19% zinc ore the filter press in use will handle conveniently the residue of a 30-lb. charge; whereas, with a 25% zinc ore a 40-lb. charge, and 30% zinc ore a 50-lb. charge.

Nickel processing | Britannica.com

History. Nickel was used industrially as an alloying metal almost 2,000 years before it was isolated and recognized as a new element. As early as 200 bce the Chinese made substantial amounts of a white alloy from zinc and a copper-nickel ore found in Yunnan province.

Hydrometallurgical Options to Add Value to Copper Projects ...

• Ammonia used (typically ~3kg ammonia/t of ore) • Similar downstream circuits (SX/EW) and similar capital costs to acid leaching • Pilot Plant run at Leon Copper Project - Argentina in 2007.

LEACHING OF MALACHITE ORE IN AMMONIUM SULFATE ... - SciELO

Leaching of Malachite Ore in Ammonium Sulfate Solutions and Production of Copper Oxide 157 Brazilian Journal of Chemical Engineering Vol. 32, No. 01, pp. 155 - 165, January - March, 2015

Copper Ore Processing Methods

Ores containing sulfide copper minerals together with enough sulfides of zinc, lead, iron, or other metals to warrant use of differential flotation to separate them and to make a separate concentrate of each.

Molybdenum Processing - imoa.info

Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide. The resulting MoS 2 concentrate contains between 85% and 92% MoS 2. Further treatment by acid leaching can be used to dissolve impurities like copper and lead if necessary. Production of molybdenum concentrate. Close-up of …

Copper Smelting - IFC

cess, the ore is leached with ammonia or sulfuric acid to extract the copper. These processes can operate at atmospheric pressure or as pressure leach circuits. Copper is recovered from solution by electrowinning, a process similar to electrolytic refining. The process is most commonly used for leaching low-grade deposits in situ or as heaps. Recovery of copper metal and alloys from copper ...

Energy and Environmental Profile of the U.S. Mining Industry 5

reactions to extract copper from its ores and concentrates. Generally, these processes are Generally, these processes are used with copper sulfides and, in some cases, high-grade oxides.

(PDF) Ammonia leaching in the copper industry: a review

ammonia leaching in the copper industry: a review Ekmekyapar, A, Oya, R and Kunkul, A, 200 3. Dissolution kinetics of an oxidized copper ore in ammonium chloride

Copper extraction - Wikipedia

Copper extraction refers to the methods used to obtaining copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.

WO2015031943A1 - A process for copper and/or precious ...

Copper minerals consume about 30 kg/t NaCN for every 1 % of reactive copper present, making conventional cyanidation of copper- gold ores or concentrates uneconomic. Moreover, both cyanide and ammonia have detrimental environmental effects.

Copper Mining and Extraction: Sulfide Ores

After this stage the enriched ore now contains about 25% copper by mass and is called copper concentrate. It is valuable enough to ship to other plants and other countries for processing. For example China, Germany and Japan are major copper producers that use concentrate from around the world.

is cyanide to leach copper - greenivory.co.za

Gold and copper leaching from gold copper ores and concentrates ... 2017 Elsevier B.V.The presence of cyanide soluble copper in the cyanidation of gold copper ores and concentrates significantly increases the cyanide... Get Price Heap leaching. The method is similar to the cyanide method above, except sulfuric acid is used to dissolve copper from its ores. The acid is recycled... Get Price How ...

Copper - Essential Chemical Industry

Whatever method is used to manufacture copper from its ore, its final purification is by electrolysis (Figure 6). Slabs of impure copper (blister copper), together with thin sheets of pure copper metal or stainless steel or titanium are immersed in a solution of copper(ll) sulfate (0.3 mol dm -3 ) and sulfuric acid (2 mol dm -3 ).

Control Of Sulfur Oxide Emissions From Primary Copper ...

concentrate all of the SO2 released into the relatively rich gas stream and to attain SO 2 concentrations of about 5-7%. 6BillB The new Buick smelter will use updraft sintering with gas

crusher license from gov kerala ammonia used in making ...

crusher license from gov kerala ammonia used in making copper ore concentrate. Home / crusher license from gov kerala ammonia used in making copper ore concentrate

How & Where to Sell Ore, Concentrates, and Bullion

Although the quoted prices are used as a basis for computing the value at the mine or mill of nonferrous metals contained in the ores or concentrates, the mine value is less than quoted value by charges for freight on ores or concentrates to the smelting plants, smelting charges, and smelter deductions for losses in treatment and for deleterious constituents of the ore, cost of shipping ...

CA2533024A1 - A process for upgrading an ore or ...

Prior art keywords stage metal ammonia process according zinc Prior art date 2003-07-18 Legal status (The legal status is an assumption and is not a legal conclusion.

INVESTIGATION OF THE USE OF AMMONIUM ACETATE AS AN ...

THE LEACHING OF MALACHITE ORE Solutions containing ammonia allow for selective leaching of copper from a copper ore. In this study, the leaching and kinetics of malachite ore were examined using ammonium acetate solutions as an alternative lixiviant. The effects of some experimental parameters on the leaching of malachite ore were investigated. A kinetic model to represent the effects of these ...

AMMONIA LEACHING IN THE COPPER INDUSTRY: A REVIEW

Although copper oxide and pure copper were first used to recover copper due to high solubility in ammonia, later on ammonia leaching of sulfide ores was also considered. The common method was the ...

Ammonia Leaching: A New Approach of Copper Industry in ...

The investigations in this field indicate more frequent use of this method for extracting copper from ore and concentrate relative to other basic metals. In this paper, an attempt was made to describe the basis and different ammonia leaching methods and present the major research activities in this field for copper. Also latest findings and related novel processes have been presented ...

Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore

Copper ores present in the southern Democratic Republic of Congo, are usually associated with cobalt and nickel ore. Sulfur ores as well as oxidized ores of copper and cobalt are present in the region. Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore Kalanga Gracias. Tshilombo, A.F. Mulaba-Bafubiandi L International Conference on Mining, Mineral Processing and Metallurgical ...

Molybdenum removal from copper ore concentrate by …

The removal of molybdenum from a copper ore concentrate by sodium hypochlorite leaching was investigated. The results show that leaching time, liquid to solid ratio, leaching temperature, agitation speed, and sodium hypochlorite and sodium hydroxide concentrations all have a significant effect on the removal of molybdenum.

COPPER(II) EXTRACTION FROM AMMONIA LEACH SOLUTION

Keywords: hydrometallurgy, hydroxyoximes, LIX, copper ore, copper concentrate Introduction Ammonia leaching is frequently used in hydrometallurgy for processing of oxide and sulfide ores, concentrates or by-products, particularly those containing significant amounts of carbonate rocks, which during the acidic leaching contribute to increased acid consumption. Ammonia and its salts …

Cobalt extraction - Wikipedia

Cobalt extraction refers to the techniques used to extract cobalt from its ores and other compound ores. Several methods exist for the separation of cobalt from copper and nickel . They depend on the concentration of cobalt and the exact composition of the used ore .