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黄金科学技术 ›› 2018, Vol. 26 ›› Issue (5): 682-688.doi: 10.11872/j.issn.1005-2518.2018.05.682

• • 上一篇    

环保药剂“金蝉”取代氰化钠处理夏家店金矿的研究

李和付1,孙皞1,叶国华2,阙潇丰1,王亚伟1,陈阳1,陈斌1   

  1. 1 山阳秦鼎矿业有限责任公司,陕西 商洛 726400
    2 昆明理工大学国土资源工程学院,云南 昆明 650093
  • 收稿日期:2018-06-16 修回日期:2018-08-28 出版日期:2018-10-20 发布日期:2018-10-31
  • 作者简介:李和付(1986-),男,四川会东人,工程师,从事黄金提取研究工作。361109923@qq.com|叶国华(1981-),男,河南虞城人,副教授,从事稀贵金属选冶研究工作。ghye581@163.com
  • 基金资助:
    国家自然科学基金地区基金项目“有色金属复杂矿强化分选过程的交互作用理论与调控机制”(51764024)

Treatment of Xiajiadian Gold Mine with Environment-friendly Reagent Jinchan as a Substitute for Sodium Cyanide

Hefu LI1,Hao SUN1,Guohua YE2,Xiaofeng QUE1,Yawei WANG1,Yang CHEN1,Bin CHEN1   

  1. 1 Shanyang Qinding Mining Co.,Ltd.,Shangluo 726400,Shaanxi,China
    2 Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
  • Received:2018-06-16 Revised:2018-08-28 Online:2018-10-20 Published:2018-10-31

摘要:

采用环保药剂“金蝉”处理夏家店金矿,并与NaCN处理效果进行了对比研究。结果表明:当“金蝉”药剂用量为200 g/t时,金浸出率为88.55%,与NaCN浸金的浸出率(88.73%)基本相同;当“金蝉”药剂用量为300 g/t时,可获得金浸出率为89.87%的良好指标,明显优于最佳条件下NaCN浸金效果(88.73%);使用“金蝉”药剂处理金矿石后,金吸附效果及载金炭解吸效果与氰化法接近(金解吸率分别为98.99%和98.97%),无不良影响;“金蝉”取代NaCN,可明显提高技术经济指标,此外,由于“金蝉”的低毒性,可在运输、管理、环保和安全等方面产生更多隐形效益。

关键词: 金, 氰化, 非氰, 环保药剂, 浸出, 吸附, 解吸

Abstract:

Environmental-friendly reagent Jinchan was used as a substitute for sodium cyanide to treat Xiajiadian gold mine,and the leaching effect of Jinchan and sodium cyanide was compared.The results showed that the leaching rate of Jinchan and sodium cyanide was 88.55% and 88.73% respectively,which was basically the same when the dosage of reagents was 200 g/t;When Jinchan dosage was 300 g/t,the leaching rate of 89.87% could be obtained,which was obviously better than the leaching effect of sodium cyanide under the optimal conditions;When using Jinchan,the adsorption and desorption effects were the same as that of sodium cyanide,with gold desorption rate of 98.99% and 98.97%, respectively;Jinchan as a substitute for sodium cyanide,could significantly improve technical and economic indicators,and moreover,in view of the non-toxicity of Jinchan,the invisible benefits of transportation,management,environmental protection and safety also would be obtained.

Key words: gold, cyanidation, non-cyanidation, environment-friendly reagent, leaching, absorption, desorption

中图分类号: 

  • TD953

表1

原矿多元素化学分析"

成分 质量分数 成分 质量分数
Au 1.42 Na2O 0.28
Ag 3.6 S 0.026
Cu 0.014 P 0.36
Pb 0.008 TFe 2.30
Zn 0.043 TC 0.18
Ni 0.011 V2O5 0.58
Co 0.006 SiO2 89.51
As 0.0115 Al2O3 2.06
Sb 0.0078 TiO2 0.14
Mo 0.013 CaO 1.30
Mn 0.16 MgO 1.34
K2O 0.78 LOI 0.86

表2

原矿金物相分析"

相别 质量分数/×10-6 分布率/%
合计 1.42 100.00
裸露及半裸露金 1.30 91.59
硫化物中包裹金 0.02 1.41
碳酸盐中包裹金 0.05 3.52
硅酸盐中包裹金 0.03 2.12
铁氧化物中包裹金 0.02 1.36

图1

碳化三聚氰酸钠化学结构图"

表3

实验室试验浸出效果对比"

药剂名称 药剂用量/(g·t-1 矿浆浓度/% 磨矿(-200目占比)/% 浸出时间/h 浸出率/%
NaCN 200 40 65 24 88.73
NaCN 300 40 65 24 88.73
金蝉 200 40 65 24 88.55
金蝉 300 40 65 24 89.84
金蝉 400 40 65 24 89.84

表4

工业试验浸出效果对比"

工业试验编号 “金蝉”用量/(g·t-1 NaCN用量/(g·t-1 磨矿细度(-200目占比)/% 矿浆质量浓度/% 原矿品位/(×10-6 浸出率/%
- 300 64.86 40 1.46 88.80
- 200 64.25 40 1.43 88.75
- 200 64.66 40 1.46 88.77
200 - 65.02 40 1.46 88.50
300 - 65.81 40 1.44 89.87
300 - 66.02 40 1.32 89.82
400 - 66.05 40 1.44 89.87

表5

“金蝉”浸金与NaCN浸金的炭吸附效果对比"

药剂名称 吸附时间/h 炭密度/(g·L-1 尾液品位/(g·m-3 吸附率/%
NaCN 16 15 0.017 98.51
金蝉 16 15 0.019 98.32

表6

“金蝉”浸金与NaCN浸金的载金炭解吸指标对比"

药剂名称 载金炭品位/(×10-6 解吸时间/h 解吸贫碳品位/(×10-6 解吸率/%
NaCN 3 295.51 11 33.78 98.97
金蝉 3 270.01 11 32.87 98.99

表7

“金蝉”浸金与NaCN浸金的技术经济对比"

药剂名称 年处理矿石量/(×104t) 药剂用量/t 药剂价差/万元 节约药剂成本/万元 金回收增加效益/万元 合计增效/万元
NaCN 10 20 - - - -
金蝉 10 30 1.25 9.6 33.23 42.83
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