ZHANG Xianmei¹,HE Zhenquan²,SU Zhongxiao³,MENG Fanrong^2,5, LU Chang’ai¹,GAI Guosheng^4,5,HUANG Zhaohui⁶

(1.Key Laboratory of Arable Land Quality Monitoring and Evaluation of Ministry of Agriculture and Rural Affairs,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China;2.Shandong Qingda Ecological Sci-Tech Co.,Ltd.,Dongying 257300,China;3.Juxian Support River Development Service Center,Rizhao 276500,China; 4.School of Chemical Engineering,Shandong Institute of Petroleum and Chemical Technology,Dongying 257061,China; 5.Wuxi Research Institute of Applied Technologies,Tsinghua University,Wuxi 214100,China;6.School of Materials Science and Technology; Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes,China University of Geosciences (Beijing),Beijing 100083,China)

Abstract：The method of mechanical activation and adding alkaline additives were used to grind potassium feldspar and potassium feldspar particle size distribution,specific surface area,surface roughness,particle morphology and their relationship were studied.The particle size and surface area were determined by laser particle size analyzer and BET method,and the surface roughness was calculated to quantitatively characterize the particle characteristics.The relationship between surface area and particle size during mechanical activation and the influence of different alkaline additives on the characteristics of potassium feldspar powder were analyzed.The process,controlling factors and influencing mechanism of enhancing the activity of potassium feldspar particles were studied.The results show that the specific surface area and roughness of potassium feldspar can be improved by both dry and wet grinding processing,but the wet processing is more efficient to improve the specific surface area and roughness,and the addition of alkaline additives and salts can reduce the specific surface area and roughness.

Keywords：mechanical activation;potassium feldspar;specific surface area;roughness;additive

Get Citation: ZHANG X M,HE Z Q,SU Z X,et al.Effect of mechanical activation on surface characteristic of potassium feldspar particle[J].China Powder Science and Technology,2023,29(3)：145-154.

Received： 2022-12-03,Revised：2023-01-20,Online：2023-05-05 09:46。

Funding Project： 山东省农业重大应用技术创新项目,编号：SD2019ZZ021;中国农业科学院基本科研业务费专项所级统筹项目,编号：1610132020008。

First Author：张仙梅(1984—),女,助理研究员,博士,研究方向为矿物矿物土壤改良剂和肥料的制备及应用和矿物服料制备。E-mail：zhangxianmei@caas.cn。

Corresponding Author：何振全(1969—),男,农艺师,硕士,研究方向为土壤肥料及调理剂的应用。E-mail：593099606@qq.com。