- Tytuł:
- Utilization of N-carboxymethyl chitosan as a selective depressant for talc in flotation of chalcopyrite
- Autorzy:
-
Liu, Cheng
Feng, Qiming
Shi, Qing
Zhang, Wencai
Song, Shaoxian - Powiązania:
- https://bibliotekanauki.pl/articles/110512.pdf
- Data publikacji:
- 2019
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
chalcopyrite
talc
flotation separation
N-carboxymethyl chitosan - Opis:
- Flotation separation of chalcopyrite from talc is difficult because of the natural hydrophobicity of two minerals. In this work, the flotation separation of chalcopyrite from talc using N-carboxymethyl chitosan as a depressant for talc was studied. The micro-flotation results indicated that the flotation separation of chalcopyrite from talc cannot be realized effectively at pH 9 with low concentration of N-carboxymethyl chitosan, in the presence of calcium ions, talc was more efficiently depressed by N-carboxymethyl chitosan, while the chalcopyrite recovery was not influenced. Contact angle, zeta potential and adsorption results showed that Ca2+ and CaOH+ absorbed on the talc surface and increased the absorption amount of N-carboxymethyl chitosan on the mineral surface, and increased hydrophilicity of talc surface, resulting the selective depression for talc in chalcopyrite flotation.
- Źródło:
-
Physicochemical Problems of Mineral Processing; 2019, 55, 1; 108-115
1643-1049
2084-4735 - Pojawia się w:
- Physicochemical Problems of Mineral Processing
- Dostawca treści:
- Biblioteka Nauki
Artykuł