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Microflotation and adsorption studies with an N-arylhydroxamic acid: Developing environmentally friendly collectors for sphalerite flotation - Couverture souple

Sharma, Jatin; Natarajan, Ramanathan; Nirdosh, Inderjit

 
9783845432670: Microflotation and adsorption studies with an N-arylhydroxamic acid: Developing environmentally friendly collectors for sphalerite flotation
Couverture souple
ISBN 10 : 3845432675 ISBN 13 : 9783845432670
Editeur : LAP LAMBERT Academic Publishing, 2011

Synopsis

A study was conducted to understand the adsorption of N-hydrocinnamoyl-N-phenylhydroxyl- amine (HCNPHA) on the surfaces of various pure minerals: sphalerite, pyrite, galena, chalcopyrite and quartz. HCNPHA is a member of the N-arylhydroxamic acids that are good base metal mineral collectors and HCNPHA gave the most promising results within the group.In this work, equilibrium studies were conducted at pH 9 and 10, using pure minerals and some microflotation studies were also undertaken. Chemisorption appears to be the most probable mechanism of adsorption on metal sulphide minerals. Microflotation studies were also conducted to understand the flotation of various minerals to HCNPHA at a pH range of 7 to 11. Optimum pH for sphalerite flotation was 9. Sphalerite was floated without the need for copper sulphate (CuSO4), which is very significant, as xanthates are unable to float sphalerite without CuSO4 (which is the costliest reagent). HCNPHA also required less CuSO4 than xanthates for reactivation of sphalerite.Xanthates are the collector of choice for mineral processing; therefore HCNPHA provides a promise in developing an environmentally friendly alternative for xanthates.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

A study was conducted to understand the adsorption of N-hydrocinnamoyl-N-phenylhydroxyl- amine (HCNPHA) on the surfaces of various pure minerals: sphalerite, pyrite, galena, chalcopyrite and quartz. HCNPHA is a member of the N-arylhydroxamic acids that are good base metal mineral collectors and HCNPHA gave the most promising results within the group.In this work, equilibrium studies were conducted at pH 9 and 10, using pure minerals and some microflotation studies were also undertaken. Chemisorption appears to be the most probable mechanism of adsorption on metal sulphide minerals. Microflotation studies were also conducted to understand the flotation of various minerals to HCNPHA at a pH range of 7 to 11. Optimum pH for sphalerite flotation was 9. Sphalerite was floated without the need for copper sulphate (CuSO4), which is very significant, as xanthates are unable to float sphalerite without CuSO4 (which is the costliest reagent). HCNPHA also required less CuSO4 than xanthates for reactivation of sphalerite.Xanthates are the collector of choice for mineral processing; therefore HCNPHA provides a promise in developing an environmentally friendly alternative for xanthates.

Biographie de l'auteur

Jatin Sharma, Masters of Science in Environmental Engineering and Bachelors of Engineering in Chemical Engineering from Lakehead University, Thunder Bay, Ontario (Canada).

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2011
Langue
anglais
ISBN 10 
3845432675
ISBN 13 
9783845432670
Reliure
Broché
Nombre de pages
100
Coordonnées du fabricant
non disponible
Personne responsable
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