新疆某含羟硅铍石矿分选实验

郑惠敏; 李丽匣; 马嘉; 刘志超

doi:10.3969/j.issn.1000-6532.2024.05.004

新疆某含羟硅铍石矿分选实验

1.
东北大学资源与土木学院，辽宁　沈阳　110819

2.
核工业北京化工冶金研究院，北京　101149

基金项目: 核技术创新联合基金项目资助（U2067201）

详细信息

作者简介: 郑惠敏（1996-），女，硕士研究生，研究方向为矿物加工工程

通讯作者: 李丽匣（1980-），女，教授，主要研究方向为破碎磨矿理论与技术、金属矿选矿理论与技术

中图分类号: TD954

收稿日期: 2022-01-12

刊出日期: 2024-10-25

Beneficiation of Bertrandite Ores in Xinjiang

1.
School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China

2.
Beijing Research Institute of Chemical Engineering Metallurgy, Beijing 101149, China

More Information

Corresponding author: LI Lixia, lilixia@mail.neu.edu.cn

Received Date: 12 January 2022

Publish Date: 25 October 2024

摘要

摘要:
这是一篇矿物加工工程领域的论文。以新疆某次火山岩型铍矿石为研究对象，进行矿物组成、元素组成分析，查明有用矿物的嵌布粒度及赋存状态，并进行系统的浮选实验。在磨矿过程加入活化剂氟化钠，对磨矿细度、浮选药剂制度进行了优化，当磨矿细度为-0.074 mm 85%、pH值调整剂碳酸钠、抑制剂硅酸钠、捕收剂油酸钠用量分别为1 500、1 000、2 000 g/t时，可以获得粗选精矿BeO品位6.03%、回收率97.02%的粗选指标。将粗选精矿再磨至-0.045 mm 90%，通过两次精选实验，精矿BeO品位达到8.40%，精矿BeO回收率为78.09%，粗选尾矿经过一次扫选实验，尾矿BeO含量可降至0.003%。“一粗一扫三精、中矿集中返回粗选”的浮选闭路实验，获得了精矿BeO品位8.12%、回收率80.99%的浮选指标，可以实现羟硅铍石的较好富集，满足我国当今铍冶炼工艺对原料BeO含量的要求。
- 矿物加工工程 /
- 羟硅铍石 /
- 浮选药剂 /
- 品位 /
- 富集 /
- 磨矿细度
Abstract:
This is an article in the field of mineral processing engineering. The volcanic bertrandite ore used in this study was obtained from Xinjiang, China. Mineral and multi-elemental compositions were characterized to identify the disseminated grain size and occurrence of valuable minerals, and systematic flotation tests were carried out. In the presence of activator sodium fluoride in the grinding process, grinding fineness and reagents dosages were optimized. It was shown that with grinding fineness of -0.074 mm 85%, dosages of pH regulator sodium carbonate, inhibitor sodium silicate, and collector sodium oleate of 1 500 g/t, 1 000 g/t, and 2 000 g/t respectively, a coarse concentrate was generated with BeO grade of 6.03% and recovery of 97.02%.This coarse concentrate was reground to -0.045 mm 90% and enriched by two cleaning stages yielding a clean concentrate assaying 8.40% BeO with a BeO recovery of 78.09%, while BeO content of the coarse tailing was degraded to 0.003% after one scavenger flotation. The closed-circuit flotation test of "one-coarse, one-scavenger, three-cleaning separation, and integrated middling recirculated to coarse separation" has generated a concentrate with BeO grade of 8.12% and recovery of 80.99%, meeting the requirements of beryllium process for BeO content in raw materials .
- Mineral processing engineering /
- Bertrandite /
- Flotation reagents /
- Grade /
- Beneficiation /
- Grinding fineness

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图 1 羟硅铍石背散射图像

Figure 1.

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图 2 羟硅铍石与各矿物共生情况

Figure 2.

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图 3 矿石不同磨矿细度对样品的浮选实验结果的影响

Figure 3.

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图 4 矿浆pH值对浮选实验结果的影响

Figure 4.

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图 5 捕收剂用量对浮选实验结果的影响

Figure 5.

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图 6 活化剂用量对浮选实验结果的影响

Figure 6.

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图 7 抑制剂用量对浮选实验结果的影响

Figure 7.

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图 8 浮选开路实验流程及药剂制度条件

Figure 8.

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图 9 中矿集中返回粗选闭路流程数质量流程

Figure 9.

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表 1 原矿的矿物组成分析结果/%

Table 1. Mineral composition of the raw samples

羟硅铍石	金红石	赤铁矿	方铅矿	独居石	黄铁矿	氟碳铈镧矿	锆石	萤石
2.78	0.24	0.14	<0.01	0.01	0.01	0.01	0.01	1.40

石英	钠长石	钾长石	伊利石	绿泥石	方解石	闪石类	其他	—
38.34	29.22	15.19	8.64	2.85	0.10	0.21	0.84	—

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表 2 原矿化学多元素分析结果/%

Table 2. Multi-elemental compositionn of the raw samples

Be	SiO₂	TFe	Al₂O₃	MgO	CaO	Mn	K	Na	F
0.42	63.80	2.72	14.68	0.35	3.05	0.19	2.81	2.69	1.5

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表 3 浮选开路实验结果

Table 3. Flotation open-circuit test results

样品名称	产率/%	BeO品位/%	BeO回收率/%
精矿	10.97	8.40	78.09
中矿2	3.01	2.23	5.69
中矿1	5.85	2.67	13.24
扫精	2.67	1.23	2.78
尾矿	77.50	0.003	0.20
原矿	100.00	1.18	100.00

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