The pretreated concentrate contained copper, silver, lead, zinc, antimony, and arsenic. Parameters affecting metal extraction (such as temperature, pressure, amount of ferrous chloride, and initial hydrogen ion concentration) were studied. Copper extraction of 98 pct was achieved by leaching 4 hours at 40 pounds per square inch gage (psig) and ...
The Copper Pressure Oxidation Plant is an Outotec proprietary technology for impure concentrate refining. The new process offers an effective way to dissolve concentrate, remove impurities, and recover copper as LME A-grade cathodes. In addition, the flowsheet can be modified to recover silver and gold. It is an easy-to-operate, self-optimizing ...
Copper concentrate and slag produced during the process of copper extraction from chalcopyrite contain precious elements such as silver (Ag) and gold (Au), which further elevates the economic ...
A process for treating a pyrite concentrate containing silver, copper, lead and zinc to recover the metals contained therein is disclosed. The process includes the partial roasting of the concentrate to open the pyrite matrix to solution penetration followed by various hydrometallurgical steps, including oxidation and reduction leaching, solid-liquid separation and metal extraction steps, to ...
Copper-silver concentrate bioleaching was observed at 30, 48 and 76 °C. • S. thermosulfidooxidans displaced Acidithiomicrobium during leaching at 48 °C. • Bioleaching temperature influenced hydrometallurgical, post-leach silver extraction. • Thiosulfate was most effective Ag extractant with high temperature bioleach residue.
The copper extraction within 96 h was observed from 13 to 14% with glycine concentrations from 0.5 to 2 M, while the copper extraction decreased at 3 M of glycine.
The extraction of gold/silver from a copper-bearing pyritic gold concentrate (62 g/t Au, 110 g/t Ag and 0.3% Cu) in thiosulphate solutions was investigated in this study.
(green feed) ore concentrate produces matte, a molten mixture of copper sulfide (Cu2S), iron sulfide (FeS), and some heavy metals. Converting the matte yields a high-grade "blister" copper, with 98.5 to 99.5 percent copper. Typically, blister copper is then fire-refined in an anode furnace, cast into
Copper extraction refers to the methods used to obtain 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.. As in all mining operations, the ore must usually be beneficiated (concentrated).
The pretreated concentrate contained copper, silver, lead, zinc, antimony, and arsenic. Parameters affecting metal extraction (such as temperature, pressure, amount of ferrous chloride, and initial hydrogen ion concentration) were studied. Copper extraction of 98 pct was achieved by leaching 4 hours at 40 pounds per square inch gage (psig) and ...
A method for extracting and separating Gold, Silver, Copper, Zinc and/or Lead from an Arsenic-containing ore, concentrate or tailings characterized in that the extraction is carried by roasting in the presence of a calcium-containing material and at least one …
approaching 98.5% and complete rejection of the bismuth to the leach residue. Subsequent silver recovery from this residue achieved 96% silver extraction. These favorable technical outcomes led to an economic assessment for this option. The capital cost of a CESL facility processing 50,000 tpy of high bismuth grade, copper concentrate was
and arsenic deportment to solids. The last leach was for determining silver and gold recovery from the now copper-depleted residue. Bench Copper Extraction Both concentrates showed a relatively tight range in copper extraction for the conditions investigated as shown in Figure 2.
copper 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 ...
hydrometallurgical 2 copper production. Tables 6-1 and 6-2 provide capsule summaries of these processes. 1 PyrometaIIurgy IS the extractIon of metaI from ores anD concen-trates using chemical reactions at high temperatures. 2 Hydrometallurgy is the recovery of metaIs from ores using water-based solutions. As early as 6000 B. C., native copper ...
Copper can be extracted from its ore by: Underground: sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore. Open pit: 90% of ore is mined by this method. Ores near the surface can be quarried after removal of the surface layers.
The specific extractive metallurgy processes applied to a silver-bearing mineral concentrate depend on whether the major metal is copper, zinc, or lead. From copper concentrates. The smelting and converting of copper sulfide concentrates result in a "blister" copper that contains 97 to 99 percent of the silver present in the original ...
Mining and extraction of copper by surface or underground methods can concentrate and expose radionuclides in the waste rock and tailings tailingsThe remaining portion of a metal-bearing ore after some or all of a metal, such as uranium, has been extracted.. Leaching and solvent extraction/electrowinning processes, as well as the practice of ...
· extraction of gold from ore that contain copper and silver offers 648 lead ore and concentrate products. About 60% of these are . Jiangxi Shicheng Yongsheng Ore Processing Mineral Equipment Manufacturing Co., Ltd. Add to Favorites . Gold, silver, copper, lead, zinc ore flotation beneficiation plant, with high ..
The Copper Chloride Leaching Process consists of the following main steps: Concentrate repulp. Atmospheric chloride leaching. Leaching residue thickening, filtration, wash, and stabilization. Copper solvent extraction (conversion from chloride to sulfate) Silver recovery from raffinate. Copper …
(1) a lead concentrate, (2) a copper concentrate, and (3) a zinc concentrate. It can be readily appreciated that an accurate comparison of several tests on an ore of this nature would involve a large number of factors, and that mathematical formulas to solve such problems would be unwieldy and useless if they included all of these factors.
The first class includes copper, lead, lead-zinc, copper-zinc, and copper-lead-zinc ores. Both gold and silver may be present, the gold values being usually associated with chalcopyrite and pyrite, and the silver with galena and tetrahedrite. ... or possibly smelting, the concentrate for the extraction of its precious metal content; this is ...
As was the case with chemical extraction of CLC bioleached solids, significant amounts of silver, and to a lesser extent of copper, were extracted chemically from mineral residues, as shown in Table 3. The total amount of copper extracted from Bor tailings by a combination of bioleaching at low pH and aerobic/anoxic conditions and extraction ...
This invention, illustrated in FIGS. 2A, 2B and 3, relates a novel hydrometallurgical treatment process for extracting metals from a flotation concentrate (10) in which platinum group metals (PGMs), gold and silver are separated from other valuable metals such as nickel, cobalt and copper, whilst iron and sulphur components are extracted as ...
The effects of copper on gold and silver extraction are shown in Figure 9. Effect Cu concentration has on gold extraction . 100- Effect of Cu OOtlon has on silver extraoVon 90- 100 .. i0.0126M 90 70 -o-0.0Z51A so t0.0126AA 60 t0.0376AA 70 so 1 60 0.0AA -r0.06AA so -r0.0376AA Ae 40 -0-0O26M 40 30 A 30 -6-0.066AA 20 20 -13-0.082ssA 10 10 0 0 0 20 ...
An alternative non-cyanide lixiviant, namely sodium hypochlorite, has been used for the selective extraction of gold and silver from a copper concentrate.
process is usually able to recover 85 to 95 percent of the copper in the ore. The dried concentrate contains approximately 20 -30 percent copper by mass, 30 per cent iron, 30 per cent sulphur, with the remainder including small amounts of gold, silver, and unwanted elements such as arsenic and mercury.
A process for the extraction of copper from a sulphide ore or concentrate comprises the steps of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halide and sulphate ions to obtain a resulting pressure oxidation slurry. The slurry is subjected to a liquid/solid separation step to obtain a resulting pressure oxidation filtrate ...
Copper Mining & Extraction Process Flow Chart. This flowchart made of machinery icons explains or expresses in simple but clear terms the step of the Copper Mining and Copper Extraction Process. Starting from either open-pit or underground mining and using a different relevant treatment method for oxide or sulphide copper mineral (ore).
Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...