Scholarlink

<p>This study evaluates the use of a grooved surface spiral separator as a preconcentration step for low-grade copper ore from the Miduk flotation plant (Kerman, Iran) to improve flotation efficiency. The 0.41% Cu feed was treated in four spiral stages at 30% solids, producing concentrates, middlings, and tailings. Spiral concentrates showed copper grades of 2.7, 2.0, 1.7, and 1.0% with a cumulative recovery of 55.6%, while middling and tailing grades were 0.17 and 0.27%. Flotation of spiral concentrates raised rougher concentrate grade from 1.3 to 5.2% and recovery from 65 to 85%. In contrast, flotation of middlings and tailings (d₈₀ = 40 µm) was poor due to fine particle size. Overall, spiral preconcentration rejected 87.76% of the feed into middling and tailing streams, potentially increasing flotation plant throughput nearly eightfold. Mineralogical analysis further suggests spiral tailings may be suitable for other processing techniques like bioleaching.</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

Novel Use of Grooved Spiral Separation for Preconcentration of a Low-Grade Mixed Oxide-Sulfide Copper Ore

  • 期刊论文

  • 发表日期：

    2026年5月22日

查看全文
  • Reza Rastegarfar,
  • Mehdi Shabani,
  • Fatemeh Badri Behnoo,
  • Javad Ghadami,
  • Faraz Soltani

摘要

This study evaluates the use of a grooved surface spiral separator as a preconcentration step for low-grade copper ore from the Miduk flotation plant (Kerman, Iran) to improve flotation efficiency. The 0.41% Cu feed was treated in four spiral stages at 30% solids, producing concentrates, middlings, and tailings. Spiral concentrates showed copper grades of 2.7, 2.0, 1.7, and 1.0% with a cumulative recovery of 55.6%, while middling and tailing grades were 0.17 and 0.27%. Flotation of spiral concentrates raised rougher concentrate grade from 1.3 to 5.2% and recovery from 65 to 85%. In contrast, flotation of middlings and tailings (d₈₀ = 40 µm) was poor due to fine particle size. Overall, spiral preconcentration rejected 87.76% of the feed into middling and tailing streams, potentially increasing flotation plant throughput nearly eightfold. Mineralogical analysis further suggests spiral tailings may be suitable for other processing techniques like bioleaching.