高钙钒渣空白焙烧碳酸化浸出工艺研究

王俊; 刘双; 闫蓓蕾; 李玉龙; 朱学军; 邓俊; 曾成华; 杨涛; 陈丹丹; 张毅

doi:10.7513/j.issn.1004-7638.2022.04.003

高钙钒渣空白焙烧碳酸化浸出工艺研究

doi: 10.7513/j.issn.1004-7638.2022.04.003

王俊^1,,
刘双¹,
闫蓓蕾¹,
李玉龙²,
朱学军^{1, 3},
邓俊^{1, 3},
曾成华¹,
杨涛¹,
陈丹丹¹,
张毅¹

1.
攀枝花学院生物与化学工程学院, 四川攀枝花 617000
2.
绿色催化四川省高校重点实验室, 四川自贡 643033
3.
过程装备与控制四川省高校重点实验室, 四川自贡 643033

基金项目: 国家自然科学基金青年基金项目(42107260); 绿色催化四川省高校重点实验室开放基金(LYJ2001) ；过程装备与控制工程四川省高校重点实验室开放基金(GK201903、GK201916) ; 钒钛资源综合利用四川省重点实验室开放基金(2020 FTSZ13)。

详细信息

作者简介:
王俊（1989—），男，四川德阳人，博士研究生，研究方向：钒钛资源综合利用，E-mail：296832920@qq.com

中图分类号: TF841.3
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- 被引次数: 0
出版历程
- 收稿日期: 2022-05-17
- 刊出日期: 2022-09-14

Study of high-calcium vanadium slag with blank roasting carbonation leaching process

1.
College of Biological and Chemical Engineering, Panzhihua University, Panzhihua 617000, Sichuan, China
2.
Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Zigong 643033, Sichuan, China
3.
Sichuan Provincial Key Laboratory of Process Equipment and Control, Zigong 643033, Sichuan, China

摘要

摘要: 针对高钙高磷钒渣钙含量高，现有提钒工艺难以有效提钒的现状，采用空白焙烧-碳酸化浸出工艺进行了试验研究，并采用响应曲面法进行了优化。考察了高钙钒渣中CaO/V₂O₅(质量比)、焙烧温度、焙烧时间、浸出搅拌速度、浸出温度、浸出时间和碳酸钠溶液浓度等条件对高钙钒渣中钒浸出率的影响。结果表明：钒渣中的CaO/V₂O₅(质量比)=0.6、899 ℃钙化焙烧160 min，熟料在浸出温度95 ℃、浸出时间140 min、碳酸钠浓度168 g/L、搅拌速度为300 r/min等条件下浸出，钒浸出率平均为92.22%。相比于传统的提钒工艺，空白焙烧碳酸化浸出工艺对于高钙钒渣具有钒浸出率高的优势。
- 高钙钒渣 /
- 空白焙烧 /
- 碳酸化浸出 /
- 响应曲面法 /
- 浸出率
Abstract: In view of the high-calcium content of high calcium and high-phosphorus vanadium slag and the existing vanadium extraction process difficult to effectively extract vanadium, blank roasting-carbonation leaching process is investigated, and the response surface method is used for optimization. The effects of CaO/V₂O₅ mass ratio, roasting temperature, roasting time, leaching stirring speed, leaching temperature, leaching time and sodium carbonate solution concentration on the leaching rate of vanadium from high-calcium vanadium slag were investigated. The results show that the average vanadium leaching rate is 92.22% when the mass ratio of CaO/V₂O₅ in vanadium slag is 0.6, calcination at 899 ℃ for 160 min, clinker leaching temperature at 95℃, leaching time of 140 min, sodium carbonate concentration of 168 g/L and stirring speed of 300 r/min. Compared with the traditional vanadium extraction process, the blank roasting-carbonation leaching process has the advantage of high vanadium leaching rate for high-calcium vanadium slag.
- high-calcium vanadium slag /
- blank roasting /
- carbonation leaching /
- response surface methodology /
- leaching rate

HTML全文

图 1 CaO/V₂O₅对钒浸出率的影响

Figure 1. Effect of CaO/V₂O₅ on vanadium leaching rate

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图 2 焙烧温度对钒浸出率影响

Figure 2. Effect of roasting temperature on vanadium leaching rate

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图 3 焙烧时间对钒浸出率影响

Figure 3. Effect of roasting time on vanadium leaching rate

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图 4 浸出温度对钒的浸出率的影响

Figure 4. Effect of leaching temperature on vanadium leaching rate

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图 5 浸出时间对钒浸出率的影响

Figure 5. Effect of leaching time on vanadium leaching rate

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图 6 碳酸钠浓度对钒浸出率的影响

Figure 6. Effect of sodium carbonate concentration on vanadium leaching rate

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图 7 搅拌速度对钒浸出率的影响

Figure 7. Effect of stirring speed on vanadium leaching rate

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图 8 实际值与预测值分布

Figure 8. Distribution of actual and predicted values

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图 9 验证试验熟料、浸出渣的XRD图谱

Figure 9. XRD patterns of clinker and leach residue under optimum conditions

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表 1 钒渣精粉主要化学成分

Table 1. Main chemical constituents of vanadium slag fine powder %

V₂O₅	CaO	P	MgO	MnO	TFe	Na₂O	SiO₂	TiO₂	Al₂O₃
14.16	2.30	0.051	2.92	7.35	35	0.45	14.96	9.98	4.35

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表 2 试验因素水平编码

Table 2. Test factor level codes

水平	因素
水平	A:焙烧温度/°C	B:浸出温度/°C	C:浸出剂浓度/(g·L⁻¹)
+1	900	95	180
0	860	90	160
−1	820	85	140

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表 3 响应曲面试验设计及实际试验结果

Table 3. Response surface test design and actual test results

编号	因素			浸出率 /%
编号	A	B	C	浸出率 /%
1	−1.000	−1.000	0.000	84.1
2	1.000	−1.000	0.000	85.5
3	−1.000	1.000	0.000	87.5
4	1.000	1.000	0.000	91.2
5	−1.000	0.000	−1.000	83.3
6	1.000	0.000	−1.000	84.2
7	−1.000	0.000	1.000	85.5
8	1.000	0.000	1.000	88.6
9	0.000	−1.000	−1.000	85.1
10	0.000	1.000	−1.000	87.5
11	0.000	−1.000	1.000	87
12	0.000	1.000	1.000	91.8
13	0.000	0.000	0.000	87.2
14	0.000	0.000	0.000	87.6
15	0.000	0.000	0.000	87.6
16	0.000	0.000	0.000	87.8
17	0.000	0.000	0.000	87.1

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表 4 方差分析

Table 4. Variance analysis

来源	平方和	自由度	均方	F值	P值	显著性
Model	82.22	9	9.14	65.62	< 0.0001	显著
A-T	10.35	1	10.35	74.35	< 0.0001
B-t	33.21	1	33.21	238.56	< 0.0001
C-C	20.48	1	20.48	147.11	< 0.0001
AB	1.32	1	1.32	9.50	0.0191
AC	1.21	1	1.21	8.69	0.0226
BC	1.44	1	1.44	10.34	0.0149
A²	8.46	1	8.46	60.77	0.0001
B²	4.49	1	4.49	32.24	0.0008
C²	1.74	1	1.74	12.49	0.0096
残差	0.9745	7	0.1392
失拟项	0.6225	3	0.2075	2.36	0.2128	不显著
纯误差	0.3520	4	0.0880
综合	83.19	16

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