LKD-3对内蒙古某钼矿的浮选实验

李颖; 刘鸿; 王舰; 马艺闻; 姜效军; 张琦; 崔波

doi:10.3969/j.issn.1000-6532.2025.01.021

LKD-3对内蒙古某钼矿的浮选实验

1.
辽宁科技大学矿业学院，辽宁　鞍山　114051

2.
辽宁科技大学化工学院，辽宁　鞍山　114051

详细信息

作者简介: 李颖（1997-），女，硕士研究生，研究方向为浮选药剂与应用

通讯作者: 王舰（1980-），男，教授，博士生导师，研究方向为浮选药剂研究与应用。

中图分类号: TD912

收稿日期: 2022-03-23

刊出日期: 2025-02-25

Experimental Study on Flotation of a Molybdenum Mine in Inner Mongolia by LKD-3

1.
School of Mineral Processing Engineering, University of Science & Technology, Anshan, Liaoning, China

2.
Chemical Engineering Institute, University of Science & Technology, Anshan 114051, Liaoning, China

More Information

Corresponding author: WANG Jian, Wangjian72800@163.com

Received Date: 23 March 2022

Publish Date: 25 February 2025

摘要

摘要:
针对内蒙古某钼矿存在嵌布状态复杂、泥化现象严重、降低尾矿品位难等问题，采用LKD-3捕收剂对其进行浮选实验研究。实验分析结果表明，LKD-3对辉钼矿具有良好的选择性，LKD-3中2,3,5-三甲基萘与碳十醇发生协同作用，可更有效地吸附在钼矿物表面，增强钼矿物表面疏水性，稳定其与药剂的吸附作用，显著提高钼精矿的品位与回收率；浮选实验结果表明，采用LKD-3对钼品位0.164%的原矿进行一粗五精二扫的闭路浮选实验，获得钼品位53.44%，钼回收率91.79%的钼精矿，比同流程、同药剂制度下采用现场煤油为捕收剂浮选闭路实验时钼精矿品位增加6.48个百分点，回收率增加4.17个百分点。研究结果对提高难选钼矿生产指标、减少资源浪费等具有理论指导意义和实践价值。
- 泥化钼矿 /
- 复合捕收剂 /
- 协同作用
Abstract:
In view of the problems of complex dissemination state, serious argillization and difficult to reduce tailings grade of a molybdenum mine in Inner Mongolia, LKD-3 collector was used to conduct the flotation test. The experimental results show that LKD-3 has good selectivity to molybdenite, and the synergistic effect of 2,3,5 - trimethylnaphthalene and carbon decanol in LKD-3 can more effectively adsorb on the surface of molybdenum minerals, enhance the hydrophobicity of molybdenum minerals, stabilize its adsorption with the reagent, and significantly improve the grade and recovery of molybdenum concentrate. Flotation test results show that the molybdenum concentrate with molybdenum grade of 53.44% and recovery of 91.79% is obtained by using LKD-3 to conduct a closed-circuit flotation test of one roughing, five cleaning and two scavenging for the raw ore with molybdenum grade of 0.164%. The grade of molybdenum concentrate increased by 6.48 percentage points and the recovery increased by 4.17 percentage points compared with the closed-circuit test using kerosene as collectors at the same process and reagent system. Research results have theoretical guiding significance and practical value for improving the production index of refractory molybdenum ore and reducing the waste of resources.
- Muddy molybdenum ore /
- Compound collector /
- Synergistic effect

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图 1 实验室开路实验工艺流程

Figure 1.

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图 2 磨矿细度实验结果

Figure 2.

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图 3 原矿显微镜分析

Figure 3.

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图 4 捕收剂种类对辉钼矿浮选精矿的影响（a）和捕收剂种类对辉钼矿浮选尾矿的影响（b）

Figure 4.

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图 5 石灰用量实验

Figure 5.

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图 6 Ca²⁺溶液中各组分的LogC-pH值关系

Figure 6.

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图 7 捕收剂用量实验

Figure 7.

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图 8 2^#油用量实验

Figure 8.

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图 9 LKD-3与矿物作用前后红外光谱变化

Figure 9.

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图 10 浮选闭路实验流程

Figure 10.

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表 1 原矿多元素分析结果/%

Table 1. Multielement analysis of the raw ore

Au*	Ag*	Mo	Cu	Pb	Zn	Fe	As	MgO	K₂O	CaO	SiO₂	Al₂O₃	S
0.07	1.36	0.164	0.001 7	0.024	0.011	0.85	0.0353	0.073	3.33	0.75	80.14	11.52	0.77
*单位为g/t。

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表 2 原矿矿物相对含量检测结果

Table 2. Determination of the relative mineral content of the raw ore

矿物	黄铁矿	辉钼矿	方铅矿	闪锌矿等	石英	长石	高岭土	云母及其他
含量/%	1.21	0.21	0.01	0.01	73.92	16.37	5.74	2.53

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表 3 给矿粒度筛析实验结果

Table 3. Screening test results of feeding particle size

粒级/mm	品位/%	产率/%	筛上累计产率/%	分布率/%
+0.10	0.20	42.37	42.37	51.67
-0.10+0.074	0.14	10.36	52.73	8.84
-0.074+0.045	0.12	12.25	64.98	8.96
-0.045+0.038	0.11	5.37	70.35	3.60
-0.038	0.15	29.65	100.00	26.93
合计	0.164	100.00	/	100.00

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表 4 实验室药剂筛选实验结果

Table 4. Laboratory drug screening test results

	捕收剂种类	药剂用量/(g/t)	产品名称	产率/%	品位/%	回收率/%
	现场煤油	煤油：80 2^#油：60	钼粗精矿	3.86	3.450	80.31
			尾矿	96.14	0.034	19.69
			给矿	100.00	0.166	100.00
优化前	LKD-1	LKD-1：68 煤油：12 2^#油：25	钼粗精矿	3.58	3.610	81.33
			尾矿	97.09	0.032	18.67
			给矿	100.00	0.165	100.00
	LKD-2	LKD-2：68 煤油：12 2^#油：25	钼粗精矿	3.79	3.570	81.45
			尾矿	96.21	0.032	18.55
			给矿	100.00	0.166	100.00
优化后	LKD-3	LKD-3：80 2^#油：40	钼粗精矿	3.58	3.860	83.15
			尾矿	97.42	0.029	16.85
			给矿	100.00	0.166	100.00
	LKD-4	LKD-4:120	钼粗精矿	3.50	3.920	82.56
			尾矿	97.50	0.030	17.44
			给矿	100.00	0.166	100.00

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表 5 接触角测试结果

Table 5. Contact angle test results

名称	天然辉钼矿	煤油	LKD-3
接触角/°	63.50	77.43	92.10

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表 6 闭路实验结果

Table 6. Closed - circuit test results

名称	产率/%	品位/%	回收率/%
精矿	0.28	53.44	91.79
尾矿	99.72	0.0135	8.21
原矿	100.00	0.164	100.00

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