Sammanfattning

The combined effect of dissolved ions and water temperature on the adsorption of a xanthate collector on chalcopyrite and pentlandite was investigated using multiple linear regression. Cationic species improved the adsorption of the collector on sulphide minerals through xanthate adsorption activation. Thiosulphate ions generally had a negative effect on collector adsorption, and the interaction of thiosulphate ions and cations effectively reduced collector adsorption on the sulphide minerals. With regards to temperature variation caused by seasonal variation, this study suggests that temperature can influence the adsorption of collectors in the flotation process and this should be approached on a case by case basis as it seems to differ with the type of mineral under investigation. These fundamental results prompt a discussion on how complex water matrices can affect interactions of reagents and sulphide minerals at the solid-liquid interface and the possible effect on flotation performance.

Nyckelord

pentlandite; chalcopyrite; adsorption; multiple linear regression; temperature; passivation

Publicerad i

Minerals
2020, Volym: 10, nummer: 9, artikelnummer: 733
Utgivare: MDPI

SLU författare

• Mäkelä, Mikko

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    
  • Teknologian Tutkimuskeskus VTT

UKÄ forskningsämne

Geokemi


Publikationens identifierare

DOI: https://doi.org/10.3390/min10090733

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/108678