The extraction of potassium from K-feldspar ore by low temperature molten salt method

Zhao Wang; Quanyou Zhang; Ying Yao; Yongzhong Jia; Bingjun Xie

doi:10.1016/j.cjche.2017.09.006

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The extraction of potassium from K-feldspar ore by low temperature molten salt method

Energy, Resources and Environmental Technology | Updated：2026-01-06

- The extraction of potassium from K-feldspar ore by low temperature molten salt method
- Chinese Journal of Chemical Engineering Vol. 26, Issue 4, Pages: 845-851(2018)
- Affiliations：
  
  1. 2 Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,China,810008
  2. 3 University of Chinese Academy of Sciences,Beijing,China,100049
  3. 4 Mangya Xingyuan Potash Corporation Ltd., Haixi,China,817500
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.09.006
  CLC：
- Published：2018
- Accepted：
Scan QR Code
Zhao Wang, Quanyou Zhang, Ying Yao, Yongzhong Jia, Bingjun Xie. The extraction of potassium from K-feldspar ore by low temperature molten salt method[J]. Chin.J.Chem.Eng., 2018, 26(4): 845-851.
DOI：

Zhao Wang, Quanyou Zhang, Ying Yao, Yongzhong Jia, Bingjun Xie. The extraction of potassium from K-feldspar ore by low temperature molten salt method[J]. Chin.J.Chem.Eng., 2018, 26(4): 845-851. DOI： 10.1016/j.cjche.2017.09.006.

摘要

Abstract

The low temperature molten salt method was used to extract potassium from K-feldspar ore

and some related factors including mass ratio between NaNO

NaOH

O and K-feldspar ore

particle size of K-feldspar ore

reaction temperature and time were investigated

respectively. In addition

the optimum condition for this method was determined by a series of condition experiments. What was more

the K-feldspar ore and the leach residue after reaction based on the above optimum condition were analyzed by XRD

SEM and EDS

separately. The results of which indicated that the mechanism of extraction of potassium for this method was according to the ion exchange reaction between sodium ion and potassium ion

and the extraction ratio of potassium had an obvious improvement than that of traditional methods

which could reach up to 96.25%. Therefore

this method can be a feasible solution to extract potassium from K-feldspar ore for its low energy consumption and high efficiency.

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