Effects of Some Additives on Copper Losses to Matte Smelting Slag

Date

2016-09-01

Author

RÜŞEN, AYDIN
Geveci, Ahmet
Topkaya, Yavuz Ali
Derin, Bora

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Copper is lost to slag between 0.7 and 2.3 wt.% during the industrial copper matte smelting stage. In the present study, the aim was to minimize these losses in the slag phase by adding some fluxing agents like CaO, B2O3 and calcium borate (namely colemanite-2CaO center dot 3B(2)O(3)center dot 5H(2)O). Eti Copper Inc. (EBI) flash furnace smelter slag containing 0.88 wt.%Cu and matte with the addition each of CaO, B2O3 and colemanite up to 10 wt.% of the total charge were melted in a silica crucible placed in a vertical tube furnace at 1250A degrees C under nitrogen atmosphere for 2 h. The experimental results of matte-slag-flux mixtures showed that the addition of all additives up to 4 wt.% led to a gradual decrease of the copper content in the final slags. Beyond this value, the copper losses to slag increased markedly with the increasing CaO and B2O3 additions. On the other hand, the colemanite addition of more than 4 wt.% did not substantially affect the copper losses to slag.

Subject Keywords

Thermodynamic considerations, Viscosity

URI

https://hdl.handle.net/11511/30059

Journal

JOM

DOI

https://doi.org/10.1007/s11837-016-1825-1

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

A. RÜŞEN, A. Geveci, Y. A. Topkaya, and B. Derin, “Effects of Some Additives on Copper Losses to Matte Smelting Slag,” JOM, pp. 2323–2331, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30059.