Contaminants of post-leaching copper solutions and their behavior during extraction with industrial extractants

• Autorzy: Gotfryd L. , Pietek G.
• Języki publikacji: EN

Abstrakty

EN

Several copper extractants have been examined in laboratory glassware with a special attention paid to their behavior towards cations others than copper(II). In the studies 25 vol. percent of hydrocarbon (Exxsol D80 AZ) solutions of six industrial copper extractants have been used. They were mainly rea-gents of hydrooxime type (LIX 860N-IC, LIX 984, LIX 984N, LIX 84-I, Acorga M5640) and diketone type LIX 54-100. Individual isotherms of independent extraction of copper(II) and selected cations (Fe3+, Fe2+, Co2+, Ni2+, Zn2+, Mn2+, Cd2+, Mg2+) versus equilibrium pH have been compared. Investigations have been conducted with synthetic 0.1 mol/L solutions of their sulfates. The values of pH50% − parameter defined as an equilibrium pH at the moment of half-and-half extraction of the investigated cationic spe-cies have been presented. Also ΔpH50%, that is differences between values of pH50% for specific cation Me(II) and copper(II): ΔpH50% = pH50%(Me) − pH50%(Cu), have been given. In addition to that 25% LIX 984 has been used in counter-current pilot trials for copper(II) extraction from naturally contaminated solutions produced by bioleaching of industrial sulfide copper concentrate to observe behavior of investi-gated contaminants such as correlations between their real co-extraction with copper(II) and the position of their extraction on the pH scale. Copper electrolyte/strip solution, working alternately within close loop of coupled stripping - electrowinning system, has been analyzed during consecutive cycles to observe building up of the contaminants concentrations in the course of test.

Słowa kluczowe

EN

industrial copper extractants; copper contaminants; copper extraction isotherms

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2013
• Tom: Vol. 49, iss. 1
• Strony: 133--143
• Opis fizyczny: Bibliogr. 9 poz., tab., wykr.

Twórcy

autor

Gotfryd L.

• Institute of Non-Ferrous Metals, Sowińskiego 5; 44-100 Gliwice, Poland

autor

Pietek G.

• Institute of Non-Ferrous Metals, Sowińskiego 5; 44-100 Gliwice, Poland,

Bibliografia

• 1. AGERS D.W. et al, 1972, The evaluation of new LIX reagents for the extraction of copper and sugges-tions for the design of commercial mixer-settler plants; AIME Annual Meeting, San Francisco, Calif. TMS Paper Selection A72-87.
• 2. Cytec Industries technical brochures; www.cytec.com/specialty-chemicals, (accessed Sept. 30, 2011), Acorga Extractants; Acorga OPT Series Solvent Extraction Reagents.
• 3. JENKINS J. et al: Electrolytic copper – leach, solvent extraction and electrowinning world operating data, Proc. of Copper 99 – Cobre 99 International Conference; Vol. IV – Hydrometallurgy of Copper; Ed. by S.K. Young.
• 4. KORDOSKY G.A., 2003, Copper SX circuit design and operation - current advances and future possi-bilities; Technical Proceedings ALTA 2003 SK/IX World Summit, Perth, Australia.
• 5. KORDOSKY G.A. et al, 1983, The LIX 860 series: Unmodified copper extraction reagents, Proc. of the International Solvent Extraction Conf., Denver, Colorado,
• 6. MERIGOLD C.R., 1996, Copper extractants – modified and unmodified oximes, a comparison, MID, CNNMIEC – Yunnan Company, BGRIMM Annual Technical Seminar, Kunming, Yunnan Province, PR of China,
• 7. MTC Redbook technical brochure; Solvent Extraction Reagents and Applications. Mining Chemicals Technology Division, Cognis Corporation /Cognis Group/; (from www.cognis.com, accessed Sept. 30, 2011);
• 8. RITCEY G.M., 2006, Solvent Extraction – Principles and applications to process metallurgy, 2nd ed., Hong Kong,
• 9. Tech. Bull. 1996-2000; LIX 860N-I, LIX 984, LIX 984N, LIX 84-I, LIX 54-100 particular Blue Line Technical Bulletins (accessed Sept. 30, 2011 at www.cognis-us.com )