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›› 2006, Vol. 6 ›› Issue (1): 59-62.

• 过程与工艺 • 上一篇    下一篇

低品位氧化锌矿堆浸实验研究

杨大锦,谢刚,贾云芝,杨德明,彭建蓉   

  1. 云南冶金集团总公司技术中心
  • 出版日期:2006-02-20 发布日期:2006-02-20

Study on Heap Leaching of Low-grade Zinc Oxide Ore

YANG Da-jin,XIE Gang,JIA Yun-zhi,YANG De-ming,PENG Jian-rong   

  1. The Technique Center of Yunnan Metallurgy Co.,Ltd.
  • Online:2006-02-20 Published:2006-02-20

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被引次数

116

摘要： 对含锌11.49%的低品位氧化锌矿以自然粒度筑堆，堆高1 m，浓酸熟化、板结后，采用间歇式喷淋(1/3闲置)，喷淋强度10~12 L/(m2×h)，堆浸温度20~32℃，堆浸浸出液终点pH值控制在1.0~1.5，经过13周的堆浸后，2 t规模低品位氧化锌矿的锌堆浸浸出率大于93%. 堆浸渣石灰乳处理以消除其可能的环境污染. 低品位氧化锌矿堆浸浸出工艺在技术上是可行的.

关键词: 低品位氧化锌, 浓酸熟化, 堆浸, 锌浸出率

Abstract: The heap leaching of zinc oxide ore with the zinc concentration range of 5%~15% is technically feasible. The zinc leaching rate is >93% in 13 weeks when zinc oxide is firstly cured with concentrated sulfurous acid in the heap leaching, the heap is set up with natural granules, heap height is 1 m, solution spraying is intermittent (1/3 time is idle), solution spraying intensity is 10~12 L/(m2×h), heap leaching temperature is 20~32℃, leaching solution is kept at pH=1.0~1.5, and the zinc concentration in low-grade zinc oxide ore is 11.49%. The contamination of slag from heap leaching of zinc oxide ore can be eliminated by method of liming of leaching slag.

Key words: low-grade zinc oxide ore, curing with sulfur acid, heap leaching, zinc leaching rate