- Tytuł:
- Dissolution kinetics of malachite in ethylene diamine phosphate solutions
- Autorzy:
-
Shen, Peilun
Liu, Ruizeng
Liu, Dianwen
Zhan, Xiaolin
Jia, Xiaodong
Song, Kaiwei - Powiązania:
- https://bibliotekanauki.pl/articles/110214.pdf
- Data publikacji:
- 2019
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
malachite
organic amine
ethylene diamine phosphate
dissolution
kinetic - Opis:
- Ethylene diamine phosphate (EDP), as a synthetic organic reagent, was used for the first time to leach malachite, and a new method of using organic amine to leach copper oxide ore was developed. The effects of stirring speed, particle size, reagent concentration, and reaction temperature on EDP-dissolution malachite were investigated. Results showed that malachite rapidly dissolved in EDP solution. The malachite-dissolving rate also increased with increased reagent concentration, increased reaction temperature, and decreased particle size. Stirring speed exhibited nearly no effect on EDP-induced malachite dissolution. The leaching kinetics was found to follow the shrinking-core model, and dissolution was controlled by surface chemical reaction with an activation energy of 52.63kJ×mol−1. A semiempirical rate equation was obtained to describe the dissolution process expressed as 1-(1-XCu)1/3=0.0149(CEDP)0.7814 × (Pmalachite)−0.7982×exp(−6.3308/T) ×t.
- Źródło:
-
Physicochemical Problems of Mineral Processing; 2019, 55, 4; 1039-1048
1643-1049
2084-4735 - Pojawia się w:
- Physicochemical Problems of Mineral Processing
- Dostawca treści:
- Biblioteka Nauki
Artykuł