The leaching kinetics and mechanism of potassium from phosphorus-potassium associated ore in hydrochloric acid at low temperature
The leaching kinetics and mechanism of potassium from phosphorus-potassium associated ore in hydrochloric acid at low temperature
复制标题
磷钾伴生矿低温盐酸浸出动力学及机理
DOI:
10.1080/01496395.2016.1250776
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发表时间:
2017-01
影响因子:
2.8
通讯作者:
Cunwen Wang
中科院分区:
文献类型:
--
作者:
Renliang Lv;Weiguo Wang;Yuanhang Qin;Cunwen Wang
ABSTRACT The leaching kinetics of potassium from phosphorus-potassium associated ore in hydrochloric acid/fluorite (CaF2) system was studied. HCl concentration, liquor/solid ratio, CaF2 dosage, and temperature were found to be the main factors. The leaching rate of potassium can be reached more than 92% under the optimum operation conditions. A classic shrinking core model with the mixed chemically diffusion as the rate-controlling step was successfully modeled the leaching kinetics of potassium, and the activation energy was found to be 30.7 kJ·mol−1. The leaching mechanism of potassium was also elucidated based on the experimental results.
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2004-03
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