Scholarlink

<p>The flotation separation of high pyrite content secondary copper ores faces challenges including elevated pH levels, poor xanthate selectivity, and higher costs associated with its combination with Z-200. In this work, a composite thionocarbamate collector (TJ-215), with low-cost raw materials and a short synthetic route, showed a better selectivity for chalcocite than Z-200 when pH&gt;8. Zeta potential analysis indicated a stronger interaction between TJ-215 and chalcocite. These results were achieved through the synergistic coordination of NH—C=S and C=N—OH in TJ-215 molecule, compared with the single thiourea group, NH—C=S, in Z-200 molecule. At low-alkaline condition, the NH—C=S in TJ-215 formed Cu—S, Cu—N bonds with Cu atoms, and the C=N—OH combined with Cu to form a Cu—O bond. The results of this study provide guidance on the replacement of Z-200 by TJ-215 in the separation of chalcocite from pyrite in weak alkaline conditions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Selectivity of composite thionocarbamate collector in flotation separation of chalcocite from pyrite in low-alkaline pH pulp

  • 期刊论文

  • 发表日期：

    2026年4月28日

查看全文
  • Xin-miao Zhao,
  • Xiang Yao,
  • Yan-ming Wu,
  • Yuan-kun Yang,
  • Sheng-li Yu,
  • Chong-zhong Ou-Yang,
  • Bing-chao Lü,
  • Guo-hua Gu,
  • Yan-hong Wang

摘要

The flotation separation of high pyrite content secondary copper ores faces challenges including elevated pH levels, poor xanthate selectivity, and higher costs associated with its combination with Z-200. In this work, a composite thionocarbamate collector (TJ-215), with low-cost raw materials and a short synthetic route, showed a better selectivity for chalcocite than Z-200 when pH>8. Zeta potential analysis indicated a stronger interaction between TJ-215 and chalcocite. These results were achieved through the synergistic coordination of NH—C=S and C=N—OH in TJ-215 molecule, compared with the single thiourea group, NH—C=S, in Z-200 molecule. At low-alkaline condition, the NH—C=S in TJ-215 formed Cu—S, Cu—N bonds with Cu atoms, and the C=N—OH combined with Cu to form a Cu—O bond. The results of this study provide guidance on the replacement of Z-200 by TJ-215 in the separation of chalcocite from pyrite in weak alkaline conditions.