The progress of reactions in roasting of chalcopyrite by thermoanalytical studies

Prasad, Sanjay and Pandey, B D (1997) The progress of reactions in roasting of chalcopyrite by thermoanalytical studies. NML Technical Journal, 39 (4). pp. 229-238.

[img]PDF
Restricted to NML users only. Others may use ->

1888Kb

Abstract

The sulphation roasting is an important technique to recover copper from chalcopyrite. In order to study the progress of reaction during the sulphation step, chalcopyrite as well as binary sulphides of copper and iron have been subjected to thermal treatment. The role of catalytic addition of ferric oxide, sodium sulphate and ferrous sulphate with the chalcopyrite was investigated. TG/DTA plots were used to find the coarse of reactions and nature of products formed at varying temperature. A weight gain of 8% (TG) for chalcopyrite corresponding to copper sulphate formation was observed in the temperature range 628-738K. The TG plots showed respective weight gain of 14%, 17% and 12% in presence of 10% Fe2O3, 10% Na2SO4 and 20% FeSO4 with chalcopyrite in the wider temperature range 698-923K. The reaction products were confirmed by XRD analysis.

Item Type:Article
Official URL/DOI:http://library/articleDetails.jsp?recordid=941
Uncontrolled Keywords:Chalcopyrite roasting; Thermo analytical studies; Sulphation roasting; Copper ferrite formation
Divisions:Metal Extraction and Forming
ID Code:1710
Deposited By:INVALID USER
Deposited On:24 Sep 2010 15:47
Last Modified:02 Aug 2012 17:07
Related URLs:

Repository Staff Only: item control page