Adsorption kinetics and thermodynamics of sodium butyl xanthate onto bornite in flotation

Autor:	Qianyu Sun, Jin Yao, Shaohang Cao, Donghui Wang, Yuan Tang, Bin Yang, Haoran Sun, Wanzhong Yin
Rok vydání:	2019
Předmět:	Sodium Inorganic chemistry Metals and Alloys General Engineering chemistry.chemical_element engineering.material chemistry.chemical_compound Adsorption chemistry Adsorption kinetics Dixanthogen Chemisorption medicine Bornite engineering Ferric Xanthate medicine.drug
Zdroj:	Journal of Central South University. 26:2998-3007
ISSN:	2227-5223 2095-2899
DOI:	10.1007/s11771-019-4231-3
Popis:	In this paper, the effect of sodium butyl xanthate (NaBX) adsorption on the surface of bornite at different pH on flotation was studied by adsorption kinetic and thermodynamic. The flotation results demonstrated that the recovery was the highest when pH was 9 in NaBX solution (4×10−5 mol/L). The adsorption kinetics showed the reaction of NaBX on the bornite conformed to the second order kinetic equation; it belonged to the multimolecular layer adsorption of Freundlich model; the maximum adsorption rate constant was 0.30 g/(10−6 mol·min), and the equilibrium adsorption capacity was 2.70×10−6 mol/g. Thermodynamic calculation results indicated that the adsorption process was spontaneous chemisorption, and the adsorption products of NaBX on bornite surface were cupric butyl xanthate, ferric butyl xanthate and dixanthogen, which were confirmed by infrared spectrum measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::240a0d3f8ca9b4fe2f8f23db6699fd03 https://doi.org/10.1007/s11771-019-4231-3 Zobrazit plný text záznamu Full text from SpringerLink