Test of Comprehensive Recovery of Cyanide Residue
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摘要:
这是一篇矿物加工工程领域的论文。某金矿的全泥氰化尾渣含金0.45 g/t，金主要以硫化物包裹金形式存在，且主要分布于+0.037 mm粒级中。经过分级预处理后，对+0.037 mm矿样，在磨矿细度-0.037 mm 15%条件下，采用一次粗选两次扫选三次精选闭路实验流程，获得含金21.25 g/t，作业回收率72.27%的金精矿产品。
Abstract:This is an essay in the field of mineral processing engineering. Cyanide tailings of a gold mine contain gold 0.45 g/t, and the gold mainly exists in the form of vulcanized gold and is mainly distributed in coarse particles. After the classification treatment, for the +0.037 mm ore sample, under the condition of grinding fineness -0.037 mm content of 15%, by using floatation flowsheet “one roughing-two scavenging-three cleaning”, the gold concentrate with the grade of 21.25 g/t, and the operation recovery 72.27%. The Result shows that the cyanide tailings can be comprehensively recovered.
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表 1 实验矿样化学成分分析结果/%
Table 1. Results of chemical composition analysis of the test ore samples
Au* Ag* Ni Ti REO Cu Pb Zn S As 0.45 6.80 0.20 0.11 0.12 0.031 0.0050 0.015 3.42 0.27 Fe Mn Co Sb Ta Nb CaO Al2O3 SiO2 C 7.25 0.081 0.0040 0.035 0.002 0.001 2.56 8.54 71.56 1.68 *单位为：g/t。 
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表 2 实验矿样中金的化学物相分析结果
Table 2. Results of chemical phase analysis of gold in the test ore samples
金相态 Au含量/(g/t) Au分布率/% 单体金+连生金 0.040 8.70 硫化物包裹金 0.270 58.70 铁等氧化物包裹金 0.100 21.74 硅酸盐中金 0.050 10.86 总金 0.460 100.00
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表 3 实验矿样粒度分析结果
Table 3. Results of particle size analysis of the test ore samples
粒级/mm 产率/% 品位/% 分布率/% 正累计分布率/% Au* S Au S Au S +0.048 9.26 1.42 1.54 29.08 4.12 29.08 4.12 -0.048+0.037 25.51 0.86 2.25 48.52 16.59 77.61 20.72 -0.037+0.023 38.28 0.18 3.89 15.24 43.05 92.85 63.77 -0.023 26.95 0.12 4.65 7.15 36.23 100.00 100.00 合计 100.00 0.45 3.46 100.00 100.00 — — *单位为：g/t。
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表 4 磨矿产品-0.037 mm 15%粒度分布结果
Table 4. Grinding products 15% particle size distribution results of -0.037 mm content
粒级/mm 产率/% 品位/% 分布率/% 正累计分布率/% Au* S Au S Au S +0.074 5.27 1.02 1.82 5.43 4.70 5.43 4.70 -0.074+0.048 50.28 1.21 2.33 61.49 57.36 66.92 62.05 -0.048+0.038 29.33 0.92 2.05 27.27 29.44 94.19 91.49 -0.038 15.12 0.38 1.15 5.81 8.51 100.00 100.00 合计 100.00 0.99 2.04 100.00 100.00 — — *单位为g/t
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表 5 ＋0.037 mm矿样浮选捕收剂实验结果
Table 5. +0.037 mm flotation collector test results
产品名称 产率/% 品位/(g/t) 作业回收率/% 捕收剂种类
及用量/(g/t)粗精矿 16.33 2.72 44.96 戊黄药 100
丁铵黑药 100尾矿 83.67 0.65 55.04 合计 100.00 0.99 100.00 粗精矿 23.45 2.59 60.87 戊黄药 200
丁铵黑药 100尾矿 76.55 0.51 39.13 合计 100.00 1.00 100.00 粗精矿 25.41 2.52 65.61 戊黄药 300
丁铵黑药 100尾矿 74.59 0.45 34.39 合计 100.00 0.98 100.00 粗精矿 26.84 2.23 61.60 戊黄药 160
苯甲羟肟酸 40
丁铵黑药 100尾矿 73.16 0.51 38.40 合计 100.00 0.97 100.00 粗精矿 29.50 2.08 62.15 戊黄药 120
苯甲羟肟酸 80
丁铵黑药 100尾矿 70.50 0.53 37.85 合计 100.00 0.99 100.00 粗精矿 33.24 1.93 67.63 戊黄药 160
氧化石蜡皂 40
丁铵黑药 100尾矿 66.76 0.46 32.37 合计 100.00 0.95 100.00
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表 6 ＋0.037 mm矿样浮选开路实验结果
Table 6. +0.037 mm ore flotation open circuit test results
产品名称 产率/%
品位/(g/t)作业回收率/% 金精矿 1.24 28.51 36.91 中矿 5.74 4.54 27.21 扫选精矿 4.43 2.76 12.76 尾矿 88.59 0.25 23.12 合计 100.00 0.96 100.00
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表 7 ＋0.037 mm矿样浮选闭路实验结果
Table 7. +0.037 mm ore flotation closed circuit test results
产品名称 产率/%
品位/(g/t)作业回收率/% 金精矿 3.32 21.25 72.27 尾矿 96.68 0.28 27.73 合计 100.00 0.98 100.00
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