solvent stripping of copper ore

solvent stripping of copper ore

Solvent Extraction Stripping Methods 911 Metallurgist

Jan 25, 2018· The copper chelating extractant Kelex-100 was selected to examine copper recovery from actual ore leach solutions. SX/EW technology application to process and recover copper from dilute sulfuric acid leach liquors is expanding and Kelex has the thermal stability necessary for hydrogen stripping

Read More
Copper Recovery by Solvent Extraction Techniques

Feb 02, 2017· The final decision on whether to include extra stages or not will hinge partly on the economics of the preceding leach operation, but if a very high proportion of the raffinate has to be purged from the leach circuit the economics will favor maximum copper recovery in the solvent extraction plant. Maximum Stripping Efficiency is Essential

Read More
Copper recovery using leach/solvent extraction

leach solution followed by stripping the copper into an acid Copper recovery using leach/solvent extraction/electrowinning technology 65 (Figure 2) and a catalytic amount of LIX 63, was leaching of high-grade copper oxide ore followed by EW of copper from the leach solution, produced low quality copper

Read More
GROWING ROLE OF SOLVENT EXTRACTION IN COPPER ORES

Growing role of solvent extraction in copper ores processing 31 • solvent extraction, in which the aqueous pregnant leach solution (PLS) is vig-orously mixed with an organic solvent, selectively recovers copper from PLS, being acidic or ammonia solution. The organic solvent is then separated and the copper stripped from it with a fresh acidic

Read More
Solvent Extraction of Copper: An Extractive Metallurgy

Background: Solvent Extraction of Copper Copper metal has traditionally been produced on a large scale by smelting sulfidic ores, and although well understood, this process can be costly in energy and capital terms.4 Since the 1960s, an alternative process involving solvent extraction has been employed to concentrate and purify copper ore.4

Read More
Copper recovery using leach/solvent extraction

leach solution followed by stripping the copper into an acid Copper recovery using leach/solvent extraction/electrowinning technology 65 (Figure 2) and a catalytic amount of LIX 63, was leaching of high-grade copper oxide ore followed by EW of copper from the leach solution, produced low quality copper

Read More
GROWING ROLE OF SOLVENT EXTRACTION IN COPPER

Growing role of solvent extraction in copper ores processing 31 • solvent extraction, in which the aqueous pregnant leach solution (PLS) is vig-orously mixed with an organic solvent, selectively recovers copper from PLS, being acidic or ammonia solution. The organic solvent is then separated and the copper stripped from it with a fresh acidic

Read More
Solvent Extraction of Copper: An Extractive Metallurgy

Background: Solvent Extraction of Copper Copper metal has traditionally been produced on a large scale by smelting sulfidic ores, and although well understood, this process can be costly in energy and capital terms.4 Since the 1960s, an alternative process involving solvent extraction has been employed to concentrate and purify copper ore.4

Read More
Solvent extraction of copper from high concentration

Figure 3. McCabe-Thiele constructions for (a) extraction and (b) stripping of copper in the high-tenor SX circuit (32 vol.% Acorga M5774 in Shellsol 2325). KONKOLA DEEPS EXPANSION PROJECT A hydrometallurgical flowsheet (Figure 4) for the combined treatment of the Konkola Deeps sulphide deposit and Chingola refractory ore (CRO) has been proposed.

Read More
US4039405A Leaching copper ores and solvent extraction

This invention relates to a process whereby recovery of copper from copper ores using leaching and solvent extraction techniques can be increased. The process generally comprises leaching to obtain a pregnant leach liquor, washing ore residues with an extra quantity of water to obtain extra dissolved copper values, recovering said copper values, combining the extra wash water with the pregnant

Read More
Improved Copper/Iron Selectivity in Solvent Extraction

Copper solvent extraction (SX) from an acidic aqueous solution is typically accomplished using a the stripping stage. To avoid a build-up of iron in electrolyte, which negatively affects current to excessive consumption of reagents, such as cobalt added to the EW process, and thus increases operational cost. 282 Copper ore bodies are

Read More
US5849172A Copper solvent extraction and electrowinning

An improved method and apparatus is provided for the production of copper using a solvent extraction electrowinning process. Process streams formed during the process containing entrained liquids are fed to a cyclone to remove either organic extractant or water (aqueous solutions) from the stream. A raffinate stream fed to a cyclone removes entrained organic phase which organic phase may be

Read More
Solvent extraction and separation of copper from base

Mar 01, 2016· Trans. Nonferrous Met. Soc. China 26(2016) 874−881 Solvent extraction and separation of copper from base metals using bifunctional ionic liquid from sulfate medium Niharbala Devi Department of Chemistry, Institute of Technical Education and Research, Siksha ‘O’Anusandhan Deemed University, Khandagiri Square, OR 751030, India Received 2 April 2015; accepted 17

Read More
Solvent extraction: the coordination chemistry behind

Jul 26, 2013· Controlling the pH can allow selective stripping of phenolic oximes which have been loaded with more than one metal, e.g. the more weakly bound Ni(II) can be completely transferred from a Cu(II)/Ni(II)-loaded solution of LIX 84 at pH 3, whereas the copper remains in the organic phase until the pH of the aqueous phase is lowered further. 19

Read More
How Hydrometallurgy and the SX/EW Process Made Copper

Beginning in the mid 1980s a new technology, commonly known as the leach-solvent extraction-electrowinning process or, SX/EW Process, was widely adopted. This new copper technology utilizes smelter acid to produce copper from oxidized ores and mine wastes. Today, worldwide, approximately 20% of all copper produced is produced by this is process.

Read More
Copper Mining and Extraction: Oxide Ores

Copper Mining and Extraction: Oxide Ores. Copper is refined from ores in the ground, either through underground or open-pit mines. Most of the copper ores mined today are oxide or sulfide ores. Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an

Read More
Copper Mining and Processing: Processing Copper Ores

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

Read More
Chapter 7 Energy Use in the Copper Industry

also use diesel fuel for surface hauling of ore to the mill. Approximately 155 pounds of explosives are used for every short ton of copper produced in underground mines.s The average grade of the ore mined, the ratio of overlying dirt and rock (overburden) to the ore body (stripping ratio), and the depth of the pit 5Gaines, supra note 3.

Read More
Extraction of Copper at Elevated Feed Concentrations

stripping takes place. A solution is to use . a stronger copper extractant, one which will continue to extract copper at higher acidity, but which in turn requires more acid to be stripped. In order to extract more copper, one can increase the concentration of extractant . to give more capacity. This can in turn result in more viscous organic

Read More