Biomodulation of mineral surfaces for selective separation of pyrite from chalcopyrite: a ftir study

Chandraprabha, M N and Natarajan, K A (2010) Biomodulation of mineral surfaces for selective separation of pyrite from chalcopyrite: a ftir study. In: Proceedings of the XI International Seminar on Mineral Processing Technology (MPT-2010), Dec 2010, NML Jamshedpur, India.

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

121Kb

Abstract

This paper discusses the utility of FTIR spectra in understanding the mechanism of selective separation of chalcopyrite from pyrite after biomodulation using Acidithiobacillus ferrooxidans cells. Consequent to interaction with bacterial cells, pyrite remained depressed even in presence of collector while chalcopyrite exhibited significant flotability. FTIR spectra indicated that the major species formed when pyrite and chalcopyrite were interacted with an aqueous solution of potassium ethyl xanthate was dixanthogen and copper (I)alkyl xanthate respectively. The observed difference in the flotability of the two minerals after interaction with the cells and collector is explained based on FTIR studies.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/2650
Uncontrolled Keywords:Biomodulation, Mineral, Acidithiobacillus ferrooxidans, FTIR.
Divisions:Mineral Processing
ID Code:2650
Deposited By:INVALID USER
Deposited On:16 Mar 2011 17:44
Last Modified:15 Nov 2011 14:41
Related URLs:

Repository Staff Only: item control page