云南卡房铜钨浮选尾矿回收萤石

赵荣; 宋宝旭; 普久然; 吴杰; 陈明波; 周永星

doi:10.3969/j.issn.1000-6532.2023.05.023

云南卡房铜钨浮选尾矿回收萤石

1.
云南锡业股份有限公司卡房分公司，云南　个旧　661000

2.
辽宁科技大学矿业工程学院，辽宁　鞍山　114001

详细信息

作者简介: 赵荣（1988-），男，高级工程师，从事矿物加工工程方面的工作

通讯作者: 宋宝旭（1987-），男，博士，研究方向为矿产资源综合利用

中图分类号: TD97

收稿日期: 2022-10-27

刊出日期: 2023-10-25

Recovering Fluorite from Kafang Copper-Tungsten Flotation Tailings, Yunnan Province

1.
Kafang Branch of Yunnan Tin Company Group Ltd, Gejiu, Yunnan, China

2.
School of Mining Engineering, University of Science and Technology Liaoning, Anshan, Liaoning, China

More Information

Corresponding author: Song Baoxu, winsbx@163.com

Received Date: 27 October 2022

Publish Date: 25 October 2023

摘要

摘要:
这是一篇矿物加工工程领域的论文。云锡集团卡房分公司新探获矿体除有价元素铜、钨以外，仍有价值不容小视的萤石资源。铜钨浮选尾矿中CaF₂品位高达31.98%，萤石矿物整体属粗中粒嵌布，单体解离度在95%以上，脉石矿物以钙铁辉石、石英、长石为主。选矿小型实验首先采用强磁选预选脱除了钙铁辉石等磁性脉石矿物，减少了对萤石浮选的干扰，然后采用“一粗两扫六精”的浮选工艺，选择酸化水玻璃做调整剂，选择油酸钠做捕收剂，对中矿产率较大的精选1中矿返回至扫选1作业，最终获得了CaF₂品位为96.27%、回收率为88.85%的萤石精矿产品，实现了卡房矿区萤石资源的高效综合利用。
- 矿物加工工程 /
- 萤石 /
- 钨浮选尾矿 /
- 强磁选 /
- 钙铁辉石
Abstract:
This is an essay in the field of mineral processing engineering. In addition to the valuable elements copper and tungsten, there are still valuable fluorite resources in the newly discovered ore bodies of Kafang Branch of Yunnan Tin Group. The grade of fluorite in copper and tungsten flotation tailings is as high as 31.98%, the fluorite is coarse medium grain embedded, and the liberation degree is more than 95%. Besides quartz and feldspar, the gangue minerals are mainly hedenbergite with weak magnetism. During beneficiation tests, magnetic separation has been first conducted to remove the hedenbergite into magnetic gangue minerals, which reduces the interference on fluorite flotation process. Then flotation tests have been conducted using “one roughing- two scavenging- six cleaning” process, during which acidified sodium silicate as collector, sodium oleate as collector and return the middlings to scavenging 1, and a fluorite concentrate assaying 96.27% CaF₂ with operation recovery of 88.85% has been obtained, which realized the efficient and comprehensive utilization of fluorite resources in Kafang mining area.
- Mineral processing engineering /
- Fluorite /
- Tungsten flotation tailings /
- Magnetic separation /
- Hedenbergite

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图 1 原矿中萤石的嵌布粒度测定结果

Figure 1.

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图 2 预处理方案对比实验流程

Figure 2.

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图 3 磁场强度条件实验流程

Figure 3.

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图 4 调整剂种类及用量实验结果

Figure 4.

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图 5 捕收剂种类及用量实验结果

Figure 5.

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图 6 中矿返回方案对比实验流程

Figure 6.

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图 7 全工艺流程

Figure 7.

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表 1 铜钨浮选尾矿主要元素分析结果/%

Table 1. Analysis results of major elements of copper and tungsten flotation tailings

CaF₂	SiO₂	CaCO₃	MgO	Al₂O₃	Cu	S	WO₃
31.98	26.51	10.67	1.57	5.79	0.05	0.13	0.03

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表 2 铜钨浮选尾矿矿物组成测定结果

Table 2. Results of mineral composition of copper tungsten flotation tailings

矿物	含量%	矿物	含量%	矿物	含量%
萤石	32.350	绿泥石	1.793	钛铁矿	0.011
钙铁辉石	23.425	角闪石	0.381	方解石	6.834
石英	9.169	透闪石	0.055	菱铁矿	0.266
长石	14.513	钙铁榴石	0.365	方柱石	0.905
黑云母	6.390	钙铝榴石	0.302	绿泥石	1.793

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表 3 铜钨浮选尾矿粒度组成分析结果

Table 3. Analysis results of particle size composition of copper tungsten flotation tailings

粒级/mm	产率/%	CaF₂品位/%	CaF₂占有率/%
+0.074	18.63	23.00	13.40
-0.074+0.043	30.53	33.00	31.50
-0.043+0.020	30.55	34.00	32.48
-0.02+0.01	12.68	35.00	13.88
-0.01	7.61	36.73	8.74
给矿	100.00	31.98	100.00

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表 4 预处理方案对比实验结果

Table 4. Comparative test results of pretreatment programmes

方案	产品名称	产率/%	CaF₂品位/%	CaF₂回收率/%
方案一直接浮选	萤石粗精矿	32.50	79.27	78.43
	萤石扫选中矿	7.18	40.16	8.78
	尾矿	60.32	6.96	12.79
	给矿	100.00	32.84	100.00
方案二磁选-浮选	萤石粗精矿	32.01	88.20	86.01
	萤石扫选中矿	2.05	38.22	2.39
	浮选尾矿（A）	38.57	4.06	4.77
	磁性脉石矿物（B）	27.37	8.19	6.83
	总尾矿（A+B）	65.94	5.77	11.60
	给矿	100.00	32.54	100.00
方案三脱药-浮选	萤石粗精矿	34.49	84.97	90.06
	萤石扫选中矿	3.45	39.16	4.15
	浮选尾矿（A）	57.33	2.01	3.54
	脱药尾泥（B）	4.73	15.42	2.25
	总尾矿（A+B）	62.06	3.03	5.79
	给矿	100.00	32.54	100.00

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表 5 磁场强度条件实验结果

Table 5. Test results of magnetic field strength conditions

产品名称	产率/%		CaF₂品位/%		CaF₂回收率/%
产品名称	个别	累积	个别	平均	个别	累积
磁选产品1	8.87		7.62		2.07
磁选产品2	7.60	16.47	8.36	7.96	1.95	4.02
磁选产品3	11.40	27.87	8.51	8.19	2.97	6.99
磁选产品4	9.88	37.75	18.16	10.80	5.50	12.49
非磁产品	62.25	100.00	45.87	32.63	87.51	100.00
给矿	100.00		32.63		100.00

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表 6 中矿返回方案对比实验结果

Table 6. Comparison test results of the medium ore return scheme

流程	产品名称	作业产率/%	CaF₂品位/%	CaF₂作业回收率/%
方案一返回粗选	萤石精矿	43.22	90.79	95.91
	选萤石尾矿	56.78	2.95	4.09
	给矿	100.00	40.91	100.00
方案二返回扫选1	萤石精矿	40.64	96.27	95.55
	选萤石尾矿	59.36	3.07	4.45
	给矿	100.00	40.94	100.00

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表 7 全流程综合实验指标

Table 7. Comprehensive test indicators for the whole process

产品名称	产率/%	CaF₂品位/%	CaF₂回收率/%
萤石精矿	29.51	96.27	88.85
浮选尾矿	43.12	3.07	4.14
磁性脉石矿物	27.37	8.19	7.01
给矿	100.00	31.98	100.00

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