Experimental Study on the Flotation of a Low Lead and High Zinc Polymetallic Sulfide Ore in Northwest China
-
摘要:
西北某矿石铅品位2.56%，锌品位9.17%，伴生银品位18.60 g/t，属于低铅高锌硫化矿。为解决铅锌混合严重，铅精矿中含锌高的问题，对该矿石进行了大量的实验研究。结合工艺矿物学，进行了大量的抑锌药剂的探索，最终确定采用复合抑制剂T122具有较好的效果。根据条件实验及开路实验确定的较佳工艺条件，进行闭路流程实验，获得最终指标为铅精矿铅品位62.22%，回收率为92.42%，含锌5.79%的铅精矿。锌精矿中锌品位57.07%，回收率92.45%。伴生元素得到了较好的富集、回收，铅精矿中银品位390.90 g/t，银回收率76.50%。铅、锌及其伴生银均得到了较好的回收，实现了矿产资源的综合利用。
Abstract:An ore has a lead grade of 2.56%, a zinc grade of 9.17%, and an associated silver grade of 18.60 g/t in Northwest China, which is a low-lead and high-zinc sulfide ore. In order to solve the problem of serious lead-zinc mixing and high zinc contented in the lead concentrate, a large number of experimental studies have been done on the ore. Combined with process mineralogy, a large number of zinc-inhibiting agents were explored, and finally the composite inhibitor T122 was determined to have a good effect. According to the optimum process conditions determined by conditional test and open-circuit test, the closed-circuit process test was carried out, and the final index of the lead concentrate was 62.22%, the recovery rate was 92.42% and the lead concentrate containing 5.79% zinc. The grade of zinc in zinc concentrate is 57.07% and the recovery rate is 92.45%. The associated elements were well enriched and recovered, and the silver grade in lead concentrate was 390.90 g/t, and the silver recovery rate was 76.50%. Lead, zinc and their associated silver have been well recovered and the comprehensive utilization of mineral resources has been realized.
-
Key words:
- Lead sulfide /
- Zinc sulfide /
- T122 /
- Silver
-
-
表 1 原矿化学多元素分析结果/%
Table 1. Chemical analysis results of multi-elements of the run-of-mine ore
Cu Pb Zn Fe S As Hg SiO2 CaO MgO Al2O3 Cd Au* Ag* 0.019 2.56 9.17 3.32 4.96 0.011 0.001 33.19 35.75 5.26 4.87 0.026 0.01 18.60 *单位为g/t。 
下载: 导出CSV
表 2 铅物相分析结果
Table 2. Analysis results of lead phase
名称 硫化铅 氧化铅 总铅 含量/% 2.26 0.30 2.54 占有率/% 88.98 11.02 100.00
下载: 导出CSV
表 3 锌物相分析结果
Table 3. Analysis results of zinc phase
名称 硫化锌 氧化锌 总锌 含量/% 8.84 0.33 9.17 占有率/% 96.50 3.50 100.00
下载: 导出CSV
表 4 新药剂实验研究结果
Table 4. Results of new reagent test
药剂种类及
用量/（g·t−1）产品
名称产率
/%品位/% 回收率/% Pb Zn Pb Zn 硫酸锌 3000 铅精矿 3.56 58.23 12.64 80.66 4.91 中矿 7.32 1.68 18.42 4.77 14.72 尾矿 89.12 0.42 8.26 14.56 80.36 原矿 100.00 2.57 9.16 100.00 100.00 硫化钠 800
硫酸锌 2200铅精矿 3.29 60.45 9.42 77.69 3.39 中矿 6.58 4.02 13.54 10.34 9.73 尾矿 90.13 0.34 8.82 11.97 86.88 原矿 100.00 2.56 9.15 100.00 100.00 T122 3000 铅精矿 2.89 67.14 5.64 76.39 1.78 中矿 6.14 5.62 7.44 13.58 4.98 尾矿 90.97 0.28 9.41 10.03 93.25 原矿 100.00 2.54 9.18 100.00 100.00 亚硫酸钠1500
硫酸锌 1500铅精矿 2.87 59.43 10.13 66.89 3.17 中矿 7.07 7.61 13.25 21.10 10.21 尾矿 90.06 0.34 8.83 12.01 86.63 原矿 100.00 2.55 9.18 100.00 100.00
下载: 导出CSV
表 5 闭路实验结果
Table 5. Results of closed-circuit test
产品名称 产 率/% 品 位/% 回收率/% Pb Zn Ag* Pb Zn Ag 铅精矿 3.64 62.22 5.79 390.90 92.42 2.33 76.50 锌精矿 14.68 0.43 57.07 23.60 2.58 92.45 18.63 尾矿 81.68 0.15 0.58 1.11 5.00 5.22 4.87 原矿 100.00 2.45 9.06 18.60 100.00 100.00 100.00 *单位为g/t。
下载: 导出CSV
-
[1] 胡晓星, 朱阳戈, 郑桂兵. 含银硫化铅锌矿浮选工艺研究[J]. 中国矿业, 2020, 29(9):110-115.
HU X X, ZHU Y G, ZHENG G B. Flotation technology research on a silver bearing lead zinc sulfide ore[J]. China Mining Magazine, 2020, 29(9):110-115.
[2] 张磊, 戴惠新, 杜五星. 铜锌硫化矿分离工艺现状[J]. 矿产综合利用, 2019(1):1-6. doi: 10.3969/j.issn.1000-6532.2019.01.001
ZHANG L, DAI H X, DU W X. Research progress of copper-zinc sulfide ore separation technology[J]. Multipurpose Utilization of Mineral Resources, 2019(1):1-6. doi: 10.3969/j.issn.1000-6532.2019.01.001
[3] 曾维伟, 阳俊. 郴州某复杂硫化铅锌矿阶段磨浮试验研究[J]. 矿冶工程, 2020, 40(4):53-56. doi: 10.3969/j.issn.0253-6099.2020.04.013
ZENG W W, YANG J. Experimental study on staged grinding and staged flotation of a complex lead-zinc sulfide ore in Chenzhou[J]. Mining and Metallurgical Engineering, 2020, 40(4):53-56. doi: 10.3969/j.issn.0253-6099.2020.04.013
[4] 王自学, 冯帅. 钒钛烧结矿性能及矿物组成和结构的研究[J]. 矿产综合利用, 2020(1):71-75. doi: 10.3969/j.issn.1000-6532.2020.01.015
WANG Z X, FENG S. Study on metallurgical properties and phase of vanadium titanium sinter[J]. Multipurpose Utilization of Mineral Resources, 2020(1):71-75. doi: 10.3969/j.issn.1000-6532.2020.01.015
[5] 温凯, 陈建华. 某含银复杂铜铅锌多金属硫化矿浮选试验[J]. 矿产综合利用, 2019(6):28-32. doi: 10.3969/j.issn.1000-6532.2019.06.006
WEN K, CHEN J H. Experimental study on flotation of copper, lead and zinc polymetallic sulfide ore containing silver[J]. Multipurpose Utilization of Mineral Resources, 2019(6):28-32. doi: 10.3969/j.issn.1000-6532.2019.06.006
[6] 田树国, 崔立凤, 王军荣, 等. 国外某铜铅锌多金属矿工艺矿物学特性及影响浮选的因素[J]. 矿产综合利用, 2019(1):78-82. doi: 10.3969/j.issn.1000-6532.2019.01.017
TIAN S G, CUI L F, WANG J R, et al. Process mineralogy and factors affecting mineral processing for a foreign copper-lead-zinc polymetallic ore[J]. Multipurpose Utilization of Mineral Resources, 2019(1):78-82. doi: 10.3969/j.issn.1000-6532.2019.01.017
[7] 董艳红, 陈代雄. 某铜铅锌多金属矿硫化矿石的浮选试验[J]. 金属矿山, 2019(7):92-96.
DONG Y H, CHEN D X. Study on flotation test for copper-lead-zinc polymetallic ore[J]. Metal Mine, 2019(7):92-96.
-
图(8)
表(5)
计量
- 文章访问数: 418
- PDF下载数: 119
- 施引文献: 0