Preparation and Characterization of Surface Modification of Sphalerite Concentrate with Sodium Lignosulfonate

摘要：

In order to prevent sphalerite particles from coming together in leaching solution, and to reduce the loss of organic solvent, the surface modification of sphalerite concentrate with sodium lignosulfonate was investigated. The modified sphalerite concentrate particles were characterized by dispersion experiments, determination of adsorption rate of oil, determination of contact angle,FT-IR spectra and X-ray photoelectron spectra. The results showed that the modified sphalerite concentrate particles exhibited good dispersibility in water. The sedimentation volume reduced from 0.85 ml.g-l to 0.61 ml.g-1. The adsorption rate ofoil reduced from 0.15 ml.g1 to 0.06 mlg-1.The contact angle between sphalerite concentrate particles and water changed from 86.9* before modification to 32.7* after modification with sodium lignosulfonate. The checking results of FT-IR and XPS spectra indicated that some modification regents were coated on the particle surface. The modifier combined to sphalerite concentrate particle surface through the chemical bond, resulting in the comprehensive stability action of static and steric effect.

关键词： Surface modification Sulphide ores Mineral processing Hydrometallurgy

作者: Peng PENG Jiaxiong KE Lianghua ZHANG Pingfeng FU Xiaohua LIU

作者单位: Engineering Command Institute of Chemical Defence,Beijing 102205,P.R.China Department of Environmental Science,College of Arts & Sciences of Beijing Union University,Beijing 1 College of Materials and Engineering,Inner Mongolia University of Technology,Hohhot 010062,P.R.China

会议类型: 国际会议

会议名称: 2008国际粉体技术与应用论坛暨全国粉体产品与设备应用技术交流大会

会议地点: 北京

会议语种:英文

页码: 91-96

在线出版日期: 2008-04-01（万方平台首次上网日期，不代表论文的发表时间）