Effect of Leaching Conditions on Dissolution Rate of Potassium from K-Feldspar Calcined Sample

Abstract:

Potassium feldspar, phosphogypsum and coke are used as raw materials to obtain soluble salts of calcined sample through mechanical grinding, roasting activation and leaching with acid. A study has been conducted on the factors that affect the leaching ratio of K₂O of calcined samples, such as the type and concentration of leaching medium, temperature, time, liquid-solid ratio. The experiments show under the conditions that concentration of citric acid of 2% (wt%), liquid-solid ratio of 4, leaching for 4 hours at room temperature, potassium dissolution rate can reach 76.81%.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 911-915
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.911
• Online since: August 2013
• Authors: Xue Jiao Ren, Ju Pei Xia, Gui Qin Zi, Chao Qin Yang, Zhao Shu Zhang, Guo Bin Li, Jing Xia Chao
• Keywords: Activation, K-Feldspar, Leaching Conditions, Potassium Dissolution Rate

References

[1] Weitang Yao, Xiaozhao Han, Bo Hu, etal. Geology of Chemical Minerals (in Chinese), vol. 24 (2002 ), pp.151-155.

[2] Longhui Qiu, Zuomei Jin, Li-sheng Wang. Journal of The Chemical Fertilizer Industry(in Chinese), vol. 27 (2000), pp.19-21.

[3] Bo Hu, Xiaozhao Han, Zhenghui Xiao, etal. Geology of Chemical Minerals(in Chinese), vol. 27 (2005), pp.25-31.

[4] Shiding Miao, Hongwen Ma, Pan Zhang. Non -Metallic Mines(in Chinese), vol. 27 (2004), pp.5-7.

[5] Longhui Qiu, Lisheng Wang, Zuomei Jin. Journal of The Chemical Fertilizer Industry (in Chinese), vol. 26 (1999), pp.29-32.

[6] Lin Shi, Dingsheng Chen. Journal of South China University of Technology (in Chinese),vol. 35 (2007), pp.94-99.