四乙基溴化铵常温沉钒工艺研究

张蕾; 陈燕; 伍金树; 刘诗园; 高雷章; 余彬; 王宁

doi:10.7513/j.issn.1004-7638.2025.06.007

四乙基溴化铵常温沉钒工艺研究

doi: 10.7513/j.issn.1004-7638.2025.06.007

攀钢集团研究院有限公司, 钒钛资源综合利用国家重点实验室, 四川攀枝花 617000

详细信息

作者简介:
张蕾，1992年出生，女，辽宁丹东人，博士，主要从事钒钛资源提取及钒钛产品开发研究工作，E-mail：zhangleiwood@163.com

中图分类号: TF841.3
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出版历程
- 收稿日期: 2025-04-10
- 录用日期: 2025-05-16
- 修回日期: 2025-05-14
- 网络出版日期: 2025-12-31
- 刊出日期: 2025-12-31

Study on vanadium precipitation by tetraethylammonium bromide at room temperature

Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China

摘要

摘要: 以钙化焙烧—酸浸得到的钒浸出液为沉钒原料，以四乙基溴化铵（TEAB）作沉钒剂进行常温沉钒试验，研究了反应液pH、沉钒剂用量以及沉淀时间对沉钒率及沉淀产物杂质含量的影响，得到最佳试验条件为pH = 2.4、沉钒剂用量n(TEAB):n(V) = 0.5、沉钒时间0.5 h，此时沉钒率为97.1%，沉淀中杂质Mn、Si、P含量均控制在较低水平。对TEAB常温沉钒得到的沉淀物在550 ℃下煅烧3 h，可得到符合行业标准的五氧化二钒（V₂O₅）。
- 四乙基溴化铵 /
- 沉钒 /
- 常温 /
- 钒浸出液
Abstract: A study of vanadium precipitation at room temperature from vanadium leaching solution obtained from calcination roasting and acid leaching was carried out using tetraethylammonium bromide (TEAB) as the precipitation agent. The effects of the pH of the reaction solution, the dosage of the vanadium precipitation agent, and the precipitation time on the vanadium precipitation rate and the impurity content in the precipitate were studied. The optimal experimental conditions were obtained as pH = 2.4, the dosage of vanadium precipitation agent, n(TEAB): n(V) = 0.5, and the vanadium precipitation time of 0.5 h. Under these conditions, the vanadium precipitation rate was 97.1%, and the contents of impurities Mn, Si, and P in the precipitate were controlled at a relatively low level. The precipitate obtained by vanadium precipitation with TEAB at room temperature was calcined at 550 ℃ for 3 h, producing V₂O₅ product that meets the industry standards.
- tetraethylammonium bromide /
- vanadium precipitation /
- room temperature /
- vanadium leaching solution

HTML全文

图 1 反应液pH对沉钒率的影响

Figure 1. Effect of pH of reaction solution on vanadium precipitation rate

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图 2 沉钒剂用量n(TEAB):n(V)对沉钒率的影响

Figure 2. Effect of vanadium precipitation dosage, n(TEAB): n(V) on vanadium precipitation rate

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图 3 沉钒时间对沉钒率的影响

Figure 3. Effect of vanadium precipitation time on vanadium precipitation rate

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图 4 沉淀产物XRD图谱

Figure 4. XRD pattern of precipitate

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图 5 TOMAC、TEAB、NH₄⁺结构

Figure 5. Chemical structures of TOMAC, TEAB and NH₄⁺

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图 6 煅烧产物XRD图谱

Figure 6. XRD pattern of calcined product

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表 1 钒浸出液成分

Table 1. Composition of vanadium leaching solution g/L

V	Mn	Fe	Si	P
24.25	8.20	0.023	0.346	0.028

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表 2 不同pH条件下沉淀产物中V及杂质元素Mn、Si、P含量

Table 2. The contents of V, Mn, Si and P in the precipitate under different pH conditions

pH	Contents/%
pH	V	Mn	Si	P
1.6	35.92	1.44	0.111	0.013
1.8	36.08	1.42	0.116	0.014
2.0	36.06	1.37	0.117	0.010
2.2	36.32	1.52	0.118	0.011
2.4	36.46	0.034	0.113	0.015
2.6	36.24	0.040	0.124	0.015

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表 3 不同沉钒剂用量条件下沉淀产物中V与杂质元素Mn、Si、P含量

Table 3. The contents of V, Mn, Si and P in the precipitate by using different vanadium precipitation dosage, n(TEAB):n(V)

n(TEAB):n(V)	Contents/%
n(TEAB):n(V)	V	Mn	Si	P
0.25	35.85	0.054	0.127	0.015
0.5	36.46	0.034	0.113	0.015
0.75	36.12	0.031	0.159	0.014
1	36.24	0.058	0.175	0.011
1.25	35.98	0.031	0.161	0.014

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表 4 不同沉钒时间条件下沉淀产物中V与杂质元素Mn、Si、P含量

Table 4. The contents of V, Mn, Si and P in the precipitate by different precipitation time

Precipitation time/h	Contents/%
Precipitation time/h	V	Mn	Si	P
0.25	36.32	0.025	0.124	0.012
0.5	36.46	0.034	0.113	0.015
1	36.46	0.026	0.111	0.014
1.5	36.26	0.027	0.131	0.016
2	36.19	0.031	0.128	0.016

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表 5 沉钒试验稳定性验证结果

Table 5. Stability verification results of vanadium precipitation tests

No.	V precipitation rate/%	Contents/%
No.	V precipitation rate/%	Mn	Si	P
1	97.1	0.034	0.115	0.015
2	96.7	0.028	0.111	0.014
3	97.3	0.032	0.118	0.014
Average	97.1	0.031	0.114	0.014

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表 6 煅烧产物成分

Table 6. Composition of calcined product %

V₂O₅	Mn	Si	P	Fe	S	Na	K
99.40	0.048	0.188	0.024	0.044	<0.002	0.029	0.030

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