锰对钒渣钙化提钒的影响分析

叶露; 杜光超; 李月鹏; 彭毅; 刘严

doi:10.7513/j.issn.1004-7638.2022.06.006

锰对钒渣钙化提钒的影响分析

doi: 10.7513/j.issn.1004-7638.2022.06.006

叶露^{1, 2, ,},
杜光超^{1, 2},
李月鹏³,
彭毅^{1, 2},
刘严³

1.
钒钛资源综合利用国家重点实验室, 四川攀枝花 617000
2.
攀钢集团攀枝花钢铁研究院有限公司, 四川攀枝花 617000
3.
攀钢集团西昌钒制品科技有限公司, 四川西昌 615000

详细信息

作者简介:
叶露，1988年出生，男，湖北荆门人，大学本科，化工工程师，主要从事钒资源综合利用方面的研究工作，E-mail：yelu-jm@163.com

通讯作者:
叶露，1988年出生，男，湖北荆门人，大学本科，化工工程师，主要从事钒资源综合利用方面的研究工作，E-mail：yelu-jm@163.com

中图分类号: TF841.3
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出版历程
- 收稿日期: 2022-04-12
- 刊出日期: 2023-01-13

Effect of manganese on vanadium extraction by calcification from vanadium slag

Ye Lu^{1, 2
, ,},
Du Guangchao^{1, 2},
Li Yuepeng³,
Peng Yi^{1, 2},
Liu Yan³

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
3.
Pangang Group Xichang Vanadium Products Technology Co., Ltd. , Xichang 615000, Sichuan, China

摘要

摘要: 以Mn含量不同的两批钒渣为研究对象，利用XRD和SEM-EDS分析方法探究钒渣物相组成和微观结构，查明不同Mn含量钒渣钙化焙烧熟料的物相变化及对钒浸出率的影响。结果表明：钒渣主要由钒铁尖晶石、铁橄榄石及透辉石物相构成，在一定范围内，渣中V、Mn、Fe等主要成分的小幅波动不影响钒渣的主要物相组成；钒渣焙烧熟料均由赤铁矿Fe₂O₃、铁板钛矿Fe₂TiO₅、硅酸盐SiO₂及钒酸盐相组成，其中，钒酸盐成分主要为Mn₂V₂O₇与Ca₂V₂O₇复盐，钒主要赋存于钒酸盐复盐中，钒渣中Mn含量变化对熟料物相组成未产生明显影响；在较低钙钒比以及相同焙烧-浸出条件下，Mn对钙化提钒的焙烧-浸出效果有一定的促进作用，MnO含量分别为6.98%和8.26%的钒渣焙烧熟料钒的浸出率分别为93.66%和94.51%。
- 钒渣 /
- 锰含量 /
- 钙化提钒 /
- 物相转变 /
- 微观结构
Abstract: In this paper, two batches of vanadium slag with different Mn content were taken as the research object. XRD and SEM-EDS were used to explore the phase composition and microstructure of vanadium slag, and to find out the phase change of calcified roasted clinker with different Mn content and its effect on vanadium leaching rate. The results show that the vanadium slag is mainly composed of vanadium iron spinel, iron olivine and diopside. In a certain range, the small fluctuation of main components such as V, Mn and Fe in the slag does not affect the composition of the main phase of vanadium slag. Both roasting clinkers consist of Fe₂O₃, Fe₂TiO₅, silicate and vanadate. Of these phases, vanadate mainly refers to the double salt of Mn₂V₂O₇ and Ca₂V₂O₇, vanadium mainly occurs in this salt. The change of Mn content in vanadium slag has no obvious effect on the clinker phase composition. Mn can promote the roasting-leaching effect of calcified vanadium extraction under the same roasting-leaching conditions and low calcium-vanadium ratio. The leaching rates of vanadium from roasted clinkers with MnO content of 6.98% and 8.26% are 93.66% and 94.51%, respectively.
- vanadium slag /
- manganese content /
- vanadium extraction by calcification /
- phase transformation /
- microstructure

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图 1 钒渣XRD图谱(A、B分别对应表1中的样品编号)

Figure 1. XRD patterns of vanadium slag (A and B respectively corresponds to the samples in Table 1)

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图 2 钒渣A的元素微观分布

Figure 2. The elemental distribution of vanadium slag A

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图 3 钒渣B的元素微观分布

Figure 3. The elemental distribution of vanadium slag B

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图 4 钒渣A的形貌及矿相分布(红色标记为选定成分分析点)

Figure 4. The microstructure and phase distribution of vanadium slag A (the red symbols are selected points for EDS analysis)

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图 5 钒渣B的形貌及矿相分布(红色标记为选定成分分析点)

Figure 5. The microstructure and phase distribution of vanadium slag B (the red symbols are selected points for EDS analysis)

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图 6 钒渣焙烧熟料的XRD图谱(A、B分别对应表1中的钒渣编号)

Figure 6. XRD patterns of the roasted clinlers(A and B respectively corresponds to the samples in Table 1)

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图 7 钒渣A的熟料微观形貌(红色标识为选定EDS成分分析点)

Figure 7. The microstructure of vanadium slag A after roasting (the red symbols are selected points for EDS analysis)

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图 8 钒渣B的熟料微观形貌(红色标识为选定EDS成分分析点)

Figure 8. The microstructure of vanadium slag B after roasting (the red symbols are selected points for EDS analysis)

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表 1 原料的主要化学成分

Table 1. Main chemical compositions of raw materials %

编号	V	MnO	TFe	TiO₂	SiO₂	CaO	MgO	P
钒渣A	7.87	6.98	33.38	11.39	16.69	2.05	3.23	0.061
钒渣B	8.37	8.26	37.38	10.98	14.39	2.01	0.823	0.054
石灰石			0.451			52.00	0.645

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表 2 图3中选定点的EDS成分

Table 2. The EDS content of selected points in Fig.3 %

位置	Fe	Mn	Cr	V	Ti	Ca	Mg	Si	Al
Sp1	32.45	5.38	4.33	20.84	9.85	0.09	1.34	0.06	1.84
Sp2	32.96	9.10	0.14	0.56	0.75	0.51	3.50	13.44	0.02
Sp3	9.71	3.41	0.19	0.24	2.27	8.34	0.27	20.67	5.66

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表 3 图5中选定点的EDS成分

Table 3. The EDS compositions of selected points in Fig.5 %

位置	Fe	Mn	Cr	V	Ti	Ca	Mg	Si	Al
Sp1	35.67	6.19	3.03	19.85	12.60		0.26	0.03	0.58
Sp2	16.16	10.81		0.24	0.35	8.62	0.74	21.51	0.24
Sp3	2.17	0.96		0.06	0.30	2.92		31.28	6.69

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表 4 图7中选定点EDS分析结果

Table 4. The EDS compositions of selected points in Fig.7 %

元素	C	O	Mg	Al	Si	Ca	Ti	V	Cr	Mn	Fe
Sp1	4.65	24.27	1.19	0.43	1.66		3.53	0.73		7.53	56.01
Sp2	5.13	23.91	1.27	0.56	0.29		3.93	0.63	0.61	7.64	56.04
Sp3	3.94	24.34	0.80	0.50		0.21	19.92	2.37		4.53	43.38
Sp4	4.76	26.58	1.17	0.50		1.24	19.89	4.54		5.71	35.61
Sp5	7.88	40.81	0.25	1.24	32.26	3.28	0.59	4.97		2.82	5.91
Sp6	8.37	38.28	0.85	5.91	26.49	6.41	2.10	0.20		3.10	7.76
Sp7	7.33	27.52	2.28	3.03	5.31	10.58	0.93	26.50	0.38	11.91	3.65
Sp8	4.57	26.82	6.52	0.38	6.53	10.88	0.72	28.81		12.40	2.37
Sp9	3.38	17.62	2.01		0.77	13.59	0.47	39.29		20.10	2.76
Sp10	3.24	19.55	2.40		0.35	13.27	0.88	38.83		18.82	2.66
Sp11	3.68	12.88	1.94		0.91	13.43	0.31	38.68		18.05	1.72
Sp12	4.67	19.88	2.47		0.41	13.02		38.61		18.60	2.34

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表 5 图8中选定点EDS分析结果

Table 5. The EDS compositions of selected points in Fig.8 %

元素	C	O	Mg	Al	Si	Ca	Ti	V	Cr	Mn	Fe
Sp1	5.60	25.67				0.15	1.16	0.84	0.25	1.46	64.86
Sp2	4.62	27.52	0.46	0.85		0.17	20.31	2.17	2.95	3.71	37.24
Sp3	3.88	28.24	0.50	1.00		0.23	20.45	1.73	2.91	3.68	37.37
Sp4	8.16	40.37		4.67	29.12	4.30	0.58	3.76		2.04	5.97
Sp5	5.19	16.91	0.76		0.45	15.36	0.48	38.95		18.61	3.28
Sp6	4.21	15.08	0.67		0.51	14.11	0.34	36.31		17.78	1.55
Sp7	4.18	20.58	0.82		0.33	14.76	0.91	37.33		18.35	2.74
Sp8	4.28	20.67	0.85		0.66	15.13	0.94	37.20		17.82	2.46
Sp9	3.29	19.52	0.73		0.17	15.64	1.04	38.40		18.59	2.62
Sp10	4.41	20.62	0.87		0.21	15.58	0.40	37.92		17.87	2.11
Sp11	5.00	21.07	0.78		0.22	15.09	0.45	37.56		18.04	1.77

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