Zincex process

The use of D2EHPA to purify and concentrate ZnS04 electrolytes from which the majority of the iron has been removed by precipitation has received much attention, forming the basis of the ZINCEX processes.165,190 These processes have been developed to treat a range of primary and... 

Zinclor A development of the Zincex process which uses di-pentylpentylphosphonate (DPPP) as the extractant. Developed by Tecnicas Reunidas. 

Zinc exports U.S., 26 579 Zincex process, 26 578 Zinc Ferrite Brown... 

Spent domestic batteries cause environmental repercussions for a number of reasons the presence of soluble heavy metals the increase in their use the short life cycle, and the low efficiency of their recovery and recycling procedures. To improve the situation, a solvent extraction process plant has been built and operated in Spain [15]. It is based on the modified Zincex process (MZP) and has a capacity of processing 2800t/year of batteries in a continuous operation. 

The British company Reunion Mining Pic (RM) performed a techno-economical feasibility study for the Skorpion mine (Namibia) during 1S 7 and 1998. At that time, RM entered in contact with the R D Division of Tunicas Reunidas S.A. (TR). The objective was to apply the modified ZINCEX process (MZP) to the treatment of Skorpion ore to produce SHG zinc. One of the most important stages of the feasibility study was the piloting of key sections of the process namely, leaching, solvent extraction and electrowinning. 

Based oh the original ZINCEX process developed by TR during the 1970 s, two industrial plants (8,000 and 11,500 tonnes of zinc per year) were built in 1975 and 1979. These plants were successfully commissioned and each of them operated for about 15 years (1-3). 

During the eighties and the begiiuiing of the nineties, the original ZINCEX process was refined and simplified (4,5), resulting in the modified ZINCEX process, MZP. The MZP was experimentally confirmed and demonstrated within an European Union research project called Recuperation of Zinc from Secondary Materials that was carried out in collaboration with other European companies. In the early 90 s the application of the MZP to the treatment of electric arc furnace dusts produced by members of the Elansa consortium of Spanish steel companies was explored (6-12). 

The ZINCEX process was further improved with additional industrial design data, scale-up factors, materials, etc. through 15 years of operating demonstration plants, prototype installations and industrial models of the critical equipment in the R D Centre of TR. 

Figure 1 - Conceptual Block Diagram of the Modified ZINCEX Process...

G. Di az and D. Martin, The Modified Zincex Process The Clean, Safe and Profitable Solution to the Zinc Secondaries Treatment , Paper presented at the 3rd European East-West Conference on Materials. Svmnosium E Recycling of Materials in Industry. 

G. Diaz, D. Martin and C. Lombera, Zinc Recycling Through The Modified Zincex Process , Paper presented at 6th hitemational Conference on Recycling Lead and Zinc into the 21st Century. Madrid, Spain, 1995. 

Ttoiicas Reunidas R D Division, Modified ZINCEX Process Applied on Skorpion Zinc Ore .Report 1TR/P-4S01/1998 and ITR/P-4694/1998. Cli it Reunion Mining, Namibia, 1998. 

Tecnicas Reunidas R D Division, SHG Zinc Plant by the Modified ZINCEX Process and Modified ZINCEX Process Applied on Sanyati Copper PLS , Report ITRyP4696/1998. Client Munyati Mining, 1998. 

Zincex [Zinc extraction] A process for extracting zinc from pyrite cinder leachate, using organic solvents. The chloride leachate is first extracted with a secondary amine, and then with di(2-ethylhexyl)phosphoric acid to remove iron Developed by Tecnicas Reunidas, first commercialized in 1976, and now used in Spain and Portugal. 

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