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| 老挝某金矿石重选-环保药剂浸金研究 |
| Study on gravity separation and environmental friendly agent leaching of a gold ore in Laos |
| Received:May 07, 2021 |
| DOI： |
| 中文关键词: 有色金属冶金 金矿 尼尔森重选 尾矿浸出 助浸剂 环保药剂 |
| 英文关键词: non-ferrous metallurgy gold ore Knelson gravity separation tailings leaching auxiliary leaching reagent environmental agent |
| 基金项目:天津市“一带一路”科技创新合作项目(18PTWJHZ00080) |
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| 中文摘要: |
| 针对老挝某蚀变岩型金矿石开展了尼尔森重选和重选尾矿环保药剂浸金实验。在磨矿细度-0.074 mm占75%，尼尔森选矿机重力值为60 G’s，水量为3.8 L/min，给矿速度600 g/min条件下，重选精矿可回收原矿中47.2%的金。重选尾矿磨矿至-0.074 mm占90%，矿浆浓度为40%，石灰用量2000 g/t，铁氰化钾助浸剂用量100 g/t，预处理2 h，金蝉环保药剂用量2000 g/t，浸出32 h的条件下，重选尾矿浸出回收率92.0%，可回收原矿中48.6%的金。最终金总回收率95.8%。 |
| 英文摘要: |
| Knelson gravity separation (GS) and gold leaching of GS tailings by environmental friendly agents were conducted to beneficiate an altered rock type gold ore from Laos. The recovery rate of gold in the raw ore is 47.2% of GS under the following conditions: the grinding fineness of -0.074 mm accounting for 75%, a force of 60 G’s Knelson Concentrator, 3.8 L/min of water flow and 600 g/min of feeding speed. The leaching operation recovery rate of GS tailings is 92.0% and the recovery rate of gold in the raw ore is 48.6% under the grinding fineness of -0.074 mm content accounting for 90%, 40% of slurry concentration, pretreatment 2 h after adding 2000 g/t of lime and 100 g/t of auxiliary leaching reagent potassium ferricyanide, 2000 g/t of Jinchan environmental agent, leaching time 32 h. The total gold recovery rate is 95.8%. |
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