recovery of copper from copper smelter slag

[PDF] Recovery of copper from the copper slag and copper

Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were

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Recovery of metal values from copper smelter slags by

copper to be recovered from a secondary smelting slag. Under optimum conditions, more than 95% of copper could be recovered by only a limited recovery of cobalt, nickel and zinc could be achieved by roasting the preroasted slag with pyrite at 550°C for 1 h with a 0.25 pyrite/slag ratio. Around 2%

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(PDF) Recovery of metal values from copper

Subsequently, an attempt was made to recover the copper from a secondary smelting slag by roasting the material together with the pyritic waste from a copper ore bene- fication plant. Using this technique it may be possible to leach valuable met- als from the calcines and simultaneously to produce H2SO4 from the gaseous product.

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COBALT RECOVERY FROM SOUTHERN AFRICAN COPPER SMELTERS

More than six decades of copper mining and smelting at the Nkana smelter site near Kitwe, 250 km north of Lusaka, Zambia, left behind about 20 million tons of fayalitic slag grading between 0.3 and 2.6% cobalt, with an average of approximately 0.75% Co and 1.2% Cu.

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Characterization of copper smelter slag and

Arslan and Arslan [7] focused on the recovery of copper, cobalt, and zinc from copper smelter and converter slags by roasting with sulfuric acid. This study used leaching experiments to investigate the effects of roasting time, acid/slag ratio, and roasting temperature on the dissolution extents of metals, achieving a total of 88 % Cu, 87 % Co

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Copper Recovery Through Smelter Slag

The capacity of this smelter is 300 kt/y, it and entails concentrate smelting in one Teniente Converter (TC) of 4 x 15 m, the converting of copper matte in two Peirce-Smith converters (PSC), and the recovery of some valuable metals from slag in one electric slag cleaning furnace (SCF) Devia, Parra, Queirolo, Sánchez, and Wilkomirsky, 2019).

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(PDF) Recovery of metal values from copper smelter slags

Procedure For the sulphation roasting study, 5 g of slag or slag-pyrite mixture in a silica dish were placed in a muffle furnace which was preheated to the re- RECOVERY OF METALVALUESFROM COPPER SMELTER SLAGS 319 TABLE 1 Chemical analyses of slags and pyrite Constituent Amount Slag 1 Slag 2 Slag 3 Slag 4 Pyrite Cu (%) 4.10 10.10 1.70 3.40 2570 Co (mg/kg) 3950 3390 1830 - 2430 Ni (mg/kg)

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