Oxidation Activity Evaluation of Sulfide Ores Based on Weight Gain Rate Fusion under Different Oxidation Conditions

摘要：

　　To investigate the new evaluation method of oxidation activity of sulfide ores, nine different sulfide ore samples were taken from a pyrite mine in China, and low temperature oxidation experimental under different oxidation conditions was carried out in the laboratory.The measured weight gain rate was studied by integrating wavelet de-noising and fuzzy comprehensive evaluation.The results show that mass trend of ore samples during the low temperature oxidation process includes three stages: rapidly increasing, slowly increasing and basically unchanged.Content of water-soluble iron ion and sulfate ion of ore samples increase after oxidation.The surface of ore samples is relatively smooth and the particles are relatively uniform before oxidation.After oxidation, the surface of ore samples is loose and porous, and moreover, there is obvious agglomeration on the surface of ore samples.The oxidation activity order of ore samples according to comprehensive evaluation results is: sample 2, sample 8, sample 5, sample 4, sample 9, sample 7, sample 1, sample 6 and sample 3.

关键词： sulfide ores oxidation activity low temperature oxidation weight gain rate comprehensive evaluation

作者: PAN Wei WU Chao LI Zijun WU Zhiwei YANG Yueping

作者单位: School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China School of Nuclear Resources Engineering, University of South China, Hengyang 421001, Hunan, China

会议类型: 国际会议

会议名称: The 2016 International Symposium on Safety Science and Technology(2016安全科学与技术国际会议)

会议地点: 昆明

会议语种:英文

页码: 525-533

在线出版日期: 2016-10-17（万方平台首次上网日期，不代表论文的发表时间）