Study on Flotation Separation of High Sulfur Lead-zinc Ore from Yunnan
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摘要:
对云南某高硫铅锌矿进行选矿实验研究。原矿铅品位2.98%、锌品位2.79%、银品位114.95 g/t，在磨矿细度为-0.074 mm 76.19%条件下，采用优先浮选工艺流程，以硫酸锌+碳酸钠作为组合抑制剂，以新型捕收剂HQ-Pb作为铅捕收剂，最终获得铅品位56.62%、银品位1915.38 g/t的铅精矿，铅回收率82.36%，银回收率73.44%；获得锌品位45.92%、银品位171.38 g/t的锌精矿，锌回收率82.29%，银回收率7.58%。
Abstract:Study on the mineral processing of a high sulfur lead-zinc ore in Yunnan Province were conducted. Grades of lead, zinc and silver were 2.98%, 2.79% and 114.95 g/t, respectively. Ore was ground to -0.074 mm 76.19% and under the condition of selective flotation process, the combined reagents ZnSO4 and Na2CO3 used as the depressant and HQ-Pb and HQ-Zn were used as a novel galena and sphalerite collector. From the results of closed circuit tests, the lead concentrate, containing 56.62% Pb and 1915.38 g/t Ag, was produced, at recovery of 82.36% Pb and 73.44% Ag. And zinc concentrate of 45.92% Zn and 171.38 g/t Ag, was obtained, at recovery of 82.29% Zn and 7.58% Ag.
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Key words:
- Pb/Zn separation /
- Selective flotation /
- Collector
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表 1 主要化学成分分析/%
Table 1. Analysis of main chemical components
Cu Zn Pb Fe As S Au* Ag* SiO2 Al2O3 MgO CaO In* K2O 0.09 2.79 2.98 24.83 0.55 27.79 0.40 114.95 18.62 11.05 2.01 3.99 31.80 1.16 *单位为g/t。 
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表 2 原矿铅物相和锌物相结果
Table 2. Results of lead phase and zinc phase of raw ore
名称 硫酸铅中的铅 白铅矿中的铅 方铅矿中的铅 铅铁矾及其他 总铅 含量/% 0.16 0.29 2.39 0.14 2.98 分布率/% 5.49 9.82 79.86 4.83 100.00 名称 硫化锌 氧化锌 硫酸锌和砷酸锌中的锌 硅酸盐及锌铁尖晶石中的锌 总锌 含量/% 2.400 0.045 0.162 0.180 2.790 分布率/% 86.11 1.62 5.77 6.50 100.00
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表 3 开路实验结果
Table 3. Open circuit test results
产品 产率/% 品位/% 回收率/% Pb Zn Pb Zn 铅精矿 3.11 59.32 2.66 62.38 2.93 锌精矿 3.08 1.65 46.70 1.72 50.80 中矿1 0.93 24.72 3.36 7.80 1.11 中矿2 1.47 13.29 9.42 6.61 4.91 中矿3 5.54 2.13 7.21 3.99 14.12 中矿4 2.16 3.87 5.98 2.83 4.57 中矿5 0.88 2.98 5.42 0.88 1.68 中矿6 0.71 2.43 14.39 0.58 3.59 中矿7 0.95 1.82 7.89 0.59 2.66 中矿8 3.36 1.08 3.98 1.23 4.73 中矿9 1.22 1.02 2.91 0.42 1.26 中矿10 0.56 1.01 1.48 0.19 0.29 尾矿 76.02 0.42 0.27 10.79 7.35 给矿 100.00 2.96 2.83 100.00 100.00
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表 4 闭路实验结果
Table 4. Closed circuit test results
产品 产率/% 品位/% 回收率/% Ag* Pb Zn Ag Pb Zn 铅精矿 4.38 1915.38 56.62 3.34 73.44 82.36 5.19 锌精矿 5.05 171.38 1.72 45.92 7.58 2.89 82.29 尾矿 90.57 23.83 0.49 0.39 18.98 14.75 12.52 原矿 100.00 114.13 3.01 2.82 100.00 100.00 100.00 *单位为g/t。
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