- Tytuł:
- Activation mechanism of tantalum niobium flotation by lead ions in a combined collector flotation system
- Autorzy:
-
He, Mingfei
Li, Shuangke
Cao, Miao
Gao, Yude
Bu, Hao
Meng, Qingbo - Powiązania:
- https://bibliotekanauki.pl/articles/1448361.pdf
- Data publikacji:
- 2021
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
tantalum niobium ore
Pb2+ ions activation
ammonium dibutyl dithiophosphate
coadsorption - Opis:
- The effect of lead ions on the flotation activation of tantalum niobium ore (TNO) was studied by micro-flotation, adsorption capacity experiments, solution chemical composition calculations, and infrared spectral analysis. The experimental demonstrated that the combined collector of salicylhydroxamic acid (SHA) and ammonium dibutyl dithiophosphate (ADDP) resulted in a strong collection capacity for TNO in the presence of lead ions. The solution chemistry calculations determined that the dominant source of lead ions in the aqueous solution was $Pb(OH)^+$ at a pH of 8, which was conducive to the adsorption and interaction of SHA and ADDP anions. In the lead ion activation system, the combined reagent co-adsorbed onto the TNO surface, causing a large negative shift in the zeta potential. The co-adsorption mechanism of the combined collector consisted of complex chemisorption between SHA and the TNO surface active particles, while the main adsorption of ADDP is physisorption.
- Źródło:
-
Physicochemical Problems of Mineral Processing; 2021, 57, 1; 29-38
1643-1049
2084-4735 - Pojawia się w:
- Physicochemical Problems of Mineral Processing
- Dostawca treści:
- Biblioteka Nauki
Artykuł