| 陈彩霞,席海龙,贺来荣,杨粉娟,马晶.加压酸浸法回收红土矿中的镍、钴[J].有色金属材料与工程,2014,35(3):119-122. |
| 加压酸浸法回收红土矿中的镍、钴 |
| Recovery of Nickel and Cobalt from Laterite with High Pressure Acid Leaching Technology |
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| DOI：10.13258/j.cnki.snm.2014.03.006 |
| 中文关键词: 红土矿 加压酸浸 湿法冶金 氢氧化镍钴 |
| 英文关键词:laterite high pressure acid leachin hydrometallurgy nickel and cobalt hydroxide |
| 基金项目: |
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| 摘要点击次数: 2471 |
| 全文下载次数: 1895 |
| 中文摘要: |
| 研究了某褐铁矿层红土矿加压酸浸处理工艺，通过小试确定了各工艺过程的最佳条件.加压酸浸：温度为255 ℃，加酸量为250 kg/t，时间为60 min，矿浆体积分数为30%，镍、钴浸出率分别为98.23%和98.77%；矿浆中和：终点pH为1.5～2.0，时间为60 min，温度为90 ℃；溶液处理采用两段除杂法：用氢氧化钠进行镍、钴沉淀，终点pH为7.6，得到了氢氧化镍钴中间产品；用氧化钙沉淀废水中的金属离子，使废水达到排放要求. |
| 英文摘要: |
| This paper mainly studied the technology of recovery of nickel and cobalt from laterite with high pressure acid leaching.The optimum conditions were determined.In the processing of pressure acid leaching,the nickel and cobalt leaching rate reached 98.23%,98.77%,respectively,in the condition of temperature 255 ℃,the acid consumption 250 kg/t ore,the reaction time 60 min and pulp density 30%.The best conditions for pulp neutralization are:the end point pH 1.5-2.0,the reaction time 60 min,the temperature 90 ℃.The solution was treated by two-stage process and end pH is 7.6.Intermediate products of nickel and cobalt hydroxide were produced.After treating with calcium oxide,the wastewater could be discharged eligibly. |
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