国外某原生钛铁矿选矿工艺试验研究

钟森林; 谢宝华; 王丰雨; 梁焘茂; 张超达

doi:10.7513/j.issn.1004-7638.2022.03.016

国外某原生钛铁矿选矿工艺试验研究

doi: 10.7513/j.issn.1004-7638.2022.03.016

钟森林^{1, 2, 3,},
谢宝华^{1, 2, 3, ,},
王丰雨^{1, 2, 3},
梁焘茂^{1, 2, 3},
张超达^{1, 2, 3}

1.
广东省科学院资源利用与稀土开发研究所, 广东广州 510651
2.
稀有金属分离与综合利用国家重点实验室, 广东广州 510651
3.
广州粤有研矿物资源科技有限公司, 广东广州 510651

基金项目: 广东省科学院发展专项资金项目（2020GDASZH-2022010104）。

详细信息

作者简介:
钟森林（1984—），男，汉，工程师，主要从事选矿工艺、设备开发及资源综合利用方面的研究，E-mail：13316129197@qq.com

通讯作者:
谢宝华（1989—），男，汉，工程师，主要从事矿物加工工程及资源综合利用方面的研究，E-mail：xie19890411@qq.com

中图分类号: TD922
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出版历程
- 收稿日期: 2022-03-29
- 刊出日期: 2022-06-30

Experimental study on beneficiation of a foreign primary ilmenite ore

Zhong Senlin^{1, 2, 3
,},
Xie Baohua^{1, 2, 3
, ,},
Wang Fengyu^{1, 2, 3},
Liang Taomao^{1, 2, 3},
Zhang Chaoda^{1, 2, 3}

1.
Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510651, Guangdong, China
2.
State Key Laboratory of Separation and Comprehensive Utilization of Rare Metal, Guangzhou 510651, Guangdong, China
3.
Guangzhou Yueyouyan Mineral Resources Technology Co., Ltd., Guangzhou 510651, Guangdong, China

摘要

摘要: 国外某原生钛铁矿中TiO₂品位8.23%、Fe₂O₃品位16.47%；主要含钛矿物为钛铁矿、少量金红石和榍石，微量含钛的磁铁矿，脉石矿物主要是角闪石、长石，其次绿泥石、金云母、石英、高岭土等。有价矿物之间嵌布关系复杂，且钛铁矿嵌布粒度细，同时钛铁矿和磁铁矿包裹体包含于角闪石间，增强角闪石磁性，不利于钛铁矿磁选分离。试验采用磁选-粗精矿再磨-浮选工艺流程获得TiO₂品位为47.41%、回收率为50.32%的钛精矿。
- 钛铁矿 /
- 磁选 /
- 角闪石 /
- 浮选
Abstract: A primary ilmenite ore from overseas has a TiO₂ grade of 8.23% and a Fe₂O₃ grade of 16.47%. The mainly titanium-containing minerals contain ilmenite, a small amount of rutile and sphene, and a trace amount of titanium-containing magnetite. The gangue minerals are mainly hornblende and feldspar, followed by chlorite, flogopite, quartz and kaolinite. There exist complex embedded relationship among the valuable minerals and fine disseminated grain size of ilmenite. Ilmenite and magnetite inclusions are contained in hornblende resulting in enhancing the magnetism of hornblende, which is not conducive to the magnetic separation of the ilmenite. In this paper, a flow chart of magnetic separation-rougher concentrate regrinding-flotation was adopted to obtain ilmenite concentrate with a TiO₂ grade of 47.41% as well as a recovery of 50.32%.
- ilmenite /
- magnetic separation /
- hornblende /
- flotation

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图 1 钛铁矿中赤铁矿片晶

Figure 1. Hematite lamellae in ilmenite

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图 2 磁选粗选磨矿细度条件试验结果

Figure 2. Results of grinding fineness condition test in rough magnetic separation

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图 3 粗选磁场强度条件试验结果

Figure 3. Results of magnetic field intensity condition test in rough magnetic separation

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图 4 粗精矿再磨磁选精选试验流程

Figure 4. Flow chart of regrinding–cleaner magnetic separation test

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图 5 粗精矿再磨矿细度试验结果

Figure 5. Results of regrinding fineness condition test in cleaner magnetic separation

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图 6 精选磁场强度试验结果

Figure 6. Results of background magnetic field intensity test in cleaner magnetic separation

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图 7 浮选条件试验流程

Figure 7. Flow chart of flotation condition test

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图 8 捕收剂用量试验结果

Figure 8. Results of dosage of YTB collector condition test

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图 9 水玻璃用量试验结果

Figure 9. Results of dosage of water glass condition test

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图 10 全流程闭路试验流程

Figure 10. Flow chart of closed-circuit flotation test

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表 1 原矿多元素分析

Table 1. Spectral analysis results of run-of-mine %

TiO₂	Fe₂O₃	Mn	Cu	Zn	Pb	Bi	CaF₂
8.23	16.47	0.026	0.011	0.006	0.012	0.0047	0.32

SiO₂	MgO	CaO	Na₂O	K₂O	Al₂O₃	P	S
36.83	5.59	6.53	1.92	0.47	16.87	0.076	0.13

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表 2 原矿的矿物组成及含量

Table 2. Mineral compositions and contents in run-of-mine %

钛铁矿	金红石	榍石	磁铁矿	斜长石	白云母	金云母	角闪石	绿泥石	绿帘石
10.44	0.09	1.00	0.12	25.00	0.51	5.45	38.38	9.79	0.44

高岭石	石英	方解石	萤石	黄铁矿	褐铁矿	磷灰石	锆石	其他	合计
2.90	5.24	0.02	0.01	0.01	0.30	0.07	0.02	0.21	100.00

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表 3 钛在主要矿物中的分配

Table 3. Phase analysis of titanium in run-of-mine

矿物	含量/%	含TiO₂量/%	分配率/%
钛铁矿	10.44	51.25	65.01
金红石	0.09	96.97	1.06
榍石	1.00	36.18	4.40
磁铁矿	0.12	1.35	0.02
石英/长石等	30.29	0.98	3.61
角闪石	38.82	3.75	17.69
绿泥石/高岭土	12.69	4.17	6.43
金云母	5.96	2.35	1.70
褐铁矿	0.30	0.35	0.01
其他	0.29		0.07
合计	100.00		100.00

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表 4 全流程闭路试验结果

Table 4. Results of closed-circuit flotation test

产品名称	产率/%	TiO₂品位/%	TiO₂回收率/%
精矿	8.74	47.41	50.32
尾矿	91.26	4.48	49.68
原矿	100.00	8.23	100.00

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