云南某钛铁矿的工艺矿物学研究

陆显志; 路沛瑶; 陈英杰; 丁湛; 余攀; 柏少军

doi:10.3969/j.issn.1000-6532.2022.02.036

云南某钛铁矿的工艺矿物学研究

1.
昆明理工大学国土资源工程学院，云南　昆明　650093

2.
复杂有色金属资源清洁利用国家重点实验室，云南　昆明　650093

基金项目: 云南省万人计划项目（微细粒级钛铁矿铜组元诱导改性强化浮选机理研究）

详细信息

作者简介: 陆显志（1997-），男，本科生

通讯作者: 柏少军（1983-），男，教授，硕士研究生导师，主要研究方向为浮选理论与资源综合利用，E-mail：baishaojun830829@126.com.

中图分类号: TD951

收稿日期: 2020-04-24

刊出日期: 2022-04-25

Study on Process Mineralogy of Ilmenite in Yunnan Province

1.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China

2.
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, Yunnan, China

More Information

Corresponding author: Bai Shaojun, baishaojun830829@126.com

Received Date: 24 April 2020

Publish Date: 25 April 2022

摘要

摘要:
对云南某钛铁矿进行了工艺矿物学研究。结果表明: 矿石中钛品位为5.62%，主要有用金属矿物为钛铁矿和钒钛磁铁矿，分别占总钛的61.39%和11.03%。脉石矿物主要是斜长石和钛辉石，脉石矿物中主要成分为SiO₂和Al₂O₃，其含量分别为42.35%和12.53%。矿样中粗粒钛铁矿多与钒钛磁铁矿和榍石及硅酸盐紧密共生，其集合体的粒度主要集中在 0.02～0.30 mm。赋存于榍石与硅酸盐矿物中的钛多达27.58%。探索性实验结果表明：弱磁-强磁选可以有效地回收矿石中的强磁性矿物，并抛出大量的脉石矿物，实现钛铁矿的富集。因此，该矿石属于低品位难选钛铁矿，实现钛铁矿物的有效回收对该资源的开发利用具有重要的实践意义。
- 钛铁矿 /
- 钒钛磁铁矿 /
- 钛辉石 /
- 嵌布粒度 /
- 工艺矿物学
Abstract:
The process mineralogy of an ilmenite in Yunnan Province was studied. The results showed that the grade of titanium in the ore sample was 5.62%. The main metal minerals in the ore were ilmenite and vanadium ilmenite, which occupied for 61.39% and 11.03% of the total titanium, respectively. The gangue minerals were plagioclase and titanaugite. The contents of SiO₂ and Al₂O₃ were 42.35% and 12.53%, respectively. Most of the coarse ilmenite minerals in the samples were closely associated with vanadium ilmenite, sphene and silicate. Meanwhile, the particle size of the aggregation was mainly concentrated in 0.02～0.30 mm, whereas, 27.58% of titanium occurred in sphene and silicate minerals. Exploratory experimental results of low intensity-high intensity magnetic separation indicated that the strong magnetic minerals could be recovered and plenty of gangue minerals could be removed effectively, resulting in the concentration of ilmenite minerals. Thus, the ore belonged to a low grade refractory ilmenite and it will be significant importance to recover the ilmenite effectively for the exploitation and utilization of this resource.
- Ilmenite /
- Vanadium ilmenite /
- Titanaugite /
- Dissemination size /
- Process mineralogy

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图 1 钛铁矿（Ilm）呈粒状、板状沿斜长石（pl）、辉石（px）等矿物颗粒隙间分布

Figure 1.

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图 2 黄铁矿(Py)呈残余状分布于黑色孔洞中

Figure 2.

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图 3 辉绿结构由自形柱状斜长石（Pl）、辉石（Px）及钛铁矿（Ilm）组成

Figure 3.

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图 4 矿样中含钛辉石(px)，钛铁矿(Ilm)和斜长石（pl）组成辉绿结构

Figure 4.

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表 1 矿石主要化学成分分析结果/%

Table 1. Main chemical analysis results of the run-of-mine ore

TiO₂	Fe	V₂O₅	SiO₂	A1₂O₃	CaO	Na₂O	S	P
5.62	17.35	0.09	42.35	12.53	3.2	1.35	0.32	0.02

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表 2 钛物相分析结果

Table 2. Analysis results of Ti-distribution among mineralogical phase

钛物相	钛铁矿中钛	钒钛磁铁矿中的钛	榍石中钛	硅酸盐中钛	总钛
含量/%	3.45	0.62	0.42	1.13	5.62
分布率/%	61.39	11.03	7.47	20.11	100.00

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表 3 矿石的矿物组成

Table 3. Mineral composition analysis results of the ore

矿物	钛铁矿	榍石	磁铁矿	角闪石	钛辉石	黑云母
含量/%	9.55	1.45	1.32	2.15	34.85	微量

矿物	斜长石	方解石	黄铁矿	黄铜矿	石英	萤石
含量/%	43.53	1.2	0.78	微量	1.56	1.35

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表 4 矿石中矿物成分和嵌布粒度分析

Table 4. Mineral composition and dissemination size of the ore

矿物名称	分子式	矿物粒度/mm
钛铁矿	FeTiO₃	0. 02～ 0.30
斜长石	NaAlSi₃O₈	0. 02 ～ 0.15
含钛辉石	Ca(Mg,Fe²⁺,Fe³⁺,Ti，Al) [Si，Al)]₂O₆	0. 02～0.30
黄铁矿	FeS₂	0.01 ～ 0.30
角闪石	Ca₂Na(Mg，Fe)₄(Al,Fe³⁺)［(Si，Al)₄O₁₁］₂(OH)₂	＜ 0.006

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表 5 原矿样粒度筛析结果

Table 5. Screen analysis results of the raw ore

粒级/mm	产率/%		TiO₂品位/%	Ti金属分布率/%
粒级/mm	个别	累计	TiO₂品位/%	个别	累计
+0.5	10.54	12.54	2.65	4.94	4.94
-0.5+ 0.2	32.45	42.99	8.45	48.52	53.46
-0.2+0.1	25.25	68.24	7.42	33.15	86.62
-0.1+0.074	10.38	78.62	4.45	8.17	94.79
-0.074+ 0.037	9.13	87.75	1.65	2.67	97.46
-0.037+0.019	8.15	95.9	1.25	1.80	99.26
-0.019	4.10	100.00	1.02	0.74	100.00
合计	100.00		5.65	100.00

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表 6 弱磁-强磁选探索性实验结果

Table 6. Exploratory experimental results of low intensity-high intensity magnetic separation

作业	产品	产率/%	Fe品位/%	Fe回收率/%
	精矿	0.30	54.50	94.29
弱磁	尾矿	99.70	0.99	5.71
	原矿	100.00	17.34	100.00

		产率/%	TiO₂品位/%	TiO₂回收率/%
	精矿	57.20	8.70	85.51
强磁	尾矿	42.50	0.89	6.49
	合计	99.70	5.82	92.00

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