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摘要:
新疆某金矿位于北准噶尔成矿带卡拉麦里成矿亚带，金成矿地质条件优越。其原生矿石由于碳、砷、锑含量较高，且易泥化，属较难选矿石。在实验室中原生矿采用制粒浸出，直接浸出率仅为16.99%，但原生矿采用浮选精矿焙烧-氰化工艺，金总回收率可达73.14%。本次实验结果表明，采用选冶联合工艺流程，可以在合理的成本范围内使该金矿达到较高的选冶指标。
Abstract:The gold deposit in Xinjiang is located in the Kalamailimetallogenic subzone of the northern Junggarmetallogenic belt, with superior geological conditions for gold mineralization. The primary ore is difficult to separate due to its high carbon, arsenic and antimony contents and easy mudding. In the laboratory experiment, the primary ore is leached by granulationand the direct leaching rate is only 16.99%. However, by adopting flotation concentrate- roasting-cyanidation process, a total gold recovery of 73.14% is achieved. The study results show that the combined beneficiation and metallurgy process can make the gold mine reach a higher beneficiation and metallurgy index at areasonable cost.
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Key words:
- Gold Mine /
- Flotation /
- Calcination /
- Combined Process of Beneficiation and Metallurgy
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表 1 原矿多元素分析/%
Table 1. Multi-element analysis of raw ore
Pb Zn Au* Ag* Fe C S As Sb SiO2 Al2O3 MgO CaO 0.15 0.012 3.47 1.97 5.69 2.47 1.03 0.65 0.41 63.33 12.62 2.10 4.52 *单位为g/t。 
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表 2 矿物含量及各粒径组成
Table 2. Mineral content and composition of each particle size
矿物名称 含量/% 粒度/mm 矿物名称 含量/% 粒度/mm 石英 70.00 0.5~3
0.05~0.3黄铁矿 1.00 0.03~0.15 绿泥石 20.00 鳞片状 毒砂 2.00 0.01~0.3 白云母-绢云母 2.00 鳞片状 自然金 4粒 0.07~0.02 方解石 5.00 0.05~0.2
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表 3 开路探索实验指标汇总
Table 3. Summary of open circuit exploration test indicators
变量名称 数值 混精产率 /% 混精品位 /(g·t-1) 混精回收率/% I磨矿细度
-0.074 mm/%52 11.16 23.00 69.83 62 15.90 18.25 81.01 72 17.84 16.25 80.11 82 16.98 16.50 73.88 II 纯碱用量
/(g·t-1)500 12.44 20.75 70.30 1000 12.56 23.00 77.90 2000 12.94 21.25 74.93 III 硫酸铜用量
/(g·t-1)0 12.56 23.00 77.90 100 16.80 18.39 86.80 200 10.76 29.03 83.42 300 9.20 28.90 83.13 IV 水玻璃用量
/(g·t-1)0 16.80 18.39 86.80 500 12.70 25.94 86.98 1000 11.68 24.50 89.38 1500 11.66 21.92 79.50 丁黄/丁铵黑药
/(g·t-1)粗选I60/30
粗选II 40/209.70 26.59 75.22 粗选I 80/40
粗选II 40/2011.68 24.50 89.38 粗选I 100/50
粗选II 40/2013.72 20.77 83.82 粗选I 120/60
粗选II 40/2013.72 18.57 75.44
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表 4 闭路加权平均指标
Table 4. Closed-circuit weighted average index
产品名称 产率/% 品位/(g·t-1) 回收率/% 精矿 7.15 39.96 86.75 尾矿 92.85 0.47 13.25 原矿 100.00 3.29 100.00
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表 5 浮选精矿多元素分析结果/%
Table 5. Multi-element analysis results of flotation concentrate
Cu Pb Zn Au * Ag * S C 0.044 0.030 0.071 35.03 47.77 11.94 10.66 As Sb SiO2 Al2O3 MgO CaO 7.86 0.47 37.17 11.96 1.49 3.97 *单位为 g/t。
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表 6 浮选精矿焙砂多元素分析结果
Table 6. Multi-element analysis results of flotation concentrate calcine
产物焙砂/g 焙砂化学分析/% 指标/% Au* S As Sb C 烧失率 脱S率 脱As率 脱Sb率 脱C率 881.50 40.60 1.34 0.98 0.27 1.05 15.98 88.78 87.53 42.55 90.15 *单位为 g/t。
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表 7 焙烧过程金属平衡系数计算
Table 7. Calculation of metal balance coefficient during roasting
投料
量/gAu/(g·t-1) 金属
量/g焙砂
量/gAu/(g·t-1) 金属
量/g金属平
衡系数/%1040 35.03 0.03643 881.50 40.60 0.03579 98.24
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表 8 不同矿浆浓度浸出实验指标
Table 8. Leaching test indexes of different pulp concentrations
矿浆浓度/% 浸原品位Au/(g·t-1) 浸渣品位Au/(g·t-1) 浸出率/% 33.33
40.0040.60
40.605.56
8.3086.31
79.56
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表 9 不同矿浆浓度浸出实验指标
Table 9. Leaching test indexes of different pulp concentrations
时间 /h 浸原品位Au/(g·t-1) 浸渣品位Au/(g·t-1) 浸出率/% 16 40.60 5.90 85.47 24 40.60 5.63 86.13 32 40.60 6.04 85.12
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[1] 陈成运. 黄金难选冶矿石预氧化技术研究现状及发展前景[J]. 世界有色金属, 2020(6):51-52. doi: 10.3969/j.issn.1002-5065.2020.06.025
CHEN C Y. Research status and development prospects of gold refractory ore pre-oxidation technology[J]. Non-ferrous Metal of World, 2020(6):51-52. doi: 10.3969/j.issn.1002-5065.2020.06.025
[2] 顾雪祥, 章永梅, 葛战林, 等. 新疆东准噶尔卡拉麦里造山型金成矿系统与区域构造演化[J]. 地学前缘, 2020, 27(2):254-275.
GU X X, ZHANG Y M, GE Z L, et al. The orogenic Au mineralization system and regional tectonic evolution in the Kalamaili Area[J]. Earth Science Frontiers, 2020, 27(2):254-275.
[3] 田庆华, 王浩, 辛云涛, 等. 难处理金矿预处理方法研究现状[J]. 有色金属科学与工程, 2017, 8(2):83-89.
TIAN Q H, WANG H, XIN Y T, et al. Research status of pretreatment of refractory gold ore[J]. Nonferrous Metals Science and Engineering, 2017, 8(2):83-89.
[4] 邓元良, 明平田, 王广伟, 等. 某金精矿焙烧氧化-氰化尾矿工艺矿物学研究[J]. 矿产综合利用, 2020(4):121-125. doi: 10.3969/j.issn.1000-6532.2020.04.020
DENG Y L, MING P T, WANG G W, et al. Research on process mineralogy of roasting oxidation-cyanide tailings of a gold concentrate[J]. Multipurpose Utilization of Mineral Resources, 2020(4):121-125. doi: 10.3969/j.issn.1000-6532.2020.04.020
[5] 王梅君, 谢洪珍. Solomon某金矿浸出工艺探索研究[J]. 矿产综合利用, 2020(2):71-74. doi: 10.3969/j.issn.1000-6532.2020.02.012
WANG M J, XIE H Z. Study on leaching technology of a gold ore in Solomon[J]. Multipurpose Utilization of Mineral Resources, 2020(2):71-74. doi: 10.3969/j.issn.1000-6532.2020.02.012
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