P元素在倾翻炉FeV50冶炼中的走向与控制

叶明峰; 余彬; 黄云; 景涵

doi:10.7513/j.issn.1004-7638.2022.04.006

P元素在倾翻炉FeV50冶炼中的走向与控制

doi: 10.7513/j.issn.1004-7638.2022.04.006

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:
叶明峰（1992—），湖北黄冈人，硕士，工程师，主要从事粉状物料造块及钒铬资源增值化加工方面的研究，E-mail：csuymf@163.com

中图分类号: TF841.3
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出版历程
- 收稿日期: 2022-01-12
- 刊出日期: 2022-09-14

Trend and control of P in FeV50 smelting process of large-scale tilting furnace

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

摘要

摘要: 结合理论分析、元素平衡统计和工业试验，研究了大型倾翻炉冶炼FeV50流程P元素的走向、分布与控制措施。结果表明：大型倾翻炉FeV50冶炼过程中原料带入的磷氧化物（P₂O₅）能充分被金属铝还原并进入合金中；三氧化二钒和球磨铁粒是P元素的主要输入源，有85.71%的P进入成品合金，13.41%的P进入残合金与细粉，进入金属相的P高达99.12%。控制三氧化二钒中P含量不超过0.0326%和采用钢屑替代球磨铁粒60%以上能控制FeV50中P含量符合A级品要求。
- 钒铁 /
- 倾翻炉 /
- P元素 /
- 走向 /
- 钢屑
Abstract: Combined with theoretical analysis, element balance statistics and industrial tests, the trend, distribution and control measures of P in FeV50 smelting process of large-scale tipping furnace were studied. The results show that P₂O₅ brought in by raw materials during FeV50 smelting in large-scale tilting furnace can be fully reduced by metallic aluminum and enter the alloy. Vanadium trioxide and ball-milled iron particles are the main input sources of P, with 85.71% of P entering the finished alloy, 13.41% of P entering the residual alloy and fine powder, and 99.12% of P entering the metal phase. The most effective method to control the P content in FeV50 is the control of P content in vanadium trioxide not exceeding 0.0326% and the replacement of more than 60% of the ball-milled iron particles with steel scraps.
- tilting furnace /
- tilting furnace /
- P element /
- trend /
- steel scraps

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图 1 P-Fe和P-Al二元合金相图

Figure 1. Phase diagram of P-Fe and P-Al binary alloys

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图 2 铝热还原反应$\Delta {{G - T}}$图与固定P含量的Fe-V-Al-P伪三元相图

Figure 2. Phase diagram of Gibbs free energy of aluminothermic reduction reaction and Fe-V-Al-P quaternary alloy with fixed P content

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图 3 冶炼现场及锭模刚玉渣的成分分布

Figure 3. Smelting site and the composition distribution of corundum slags in ingot moulds

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图 4 P元素在输入物料（左）和输出物料（右）中的分布情况

Figure 4. Distribution of P element in input materials (left) and output materials (right)

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图 5 钒氧化物中P含量对应FeV50合金中P含量的关系式

Figure 5. The relationship between P content in vanadium oxide and P content in FeV50 alloy

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图 6 钢屑替代球磨铁粒的工业试验中FeV50中的P含量变化

Figure 6. Industrial test of replacing ball-milled iron particles with steel scraps

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表 1 现场输入物料中的平均P元素含量及物料平均消耗情况

Table 1. Average P element content and average material consumption in field input materials

物料名称		平均P元素含量/%	现场9+1配料模式下平均消耗/(kg·炉⁻¹)
耐火材料	镁砂	0.022	1417.8
	镁火泥	0.036
	镁砖	0.024
球磨铁粒		0.048	5414
三氧化二钒		0.040	9000
片钒		0.052	1000
石灰		＜0.01	2700

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表 2 现场输入物料中的平均P元素情况

Table 2. Average total P element amount in field input materials

物料名称	总P/(kg·炉⁻¹)
三氧化二钒	4.14
片钒	0.30
球磨铁粒	2.60
耐火材料	0.31
总计	7.35

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表 3 现场输出物料中的P元素含量及平均物料产出情况

Table 3. The P content in field output materials and average material output

物料名称	化学元素成分/%				现场9+1配料模式下平均产出/(kg·炉⁻¹)
物料名称	P	MgO	CaO	Al₂O₃	现场9+1配料模式下平均产出/(kg·炉⁻¹)
成品FeV50	0.062				10156
锭模渣	<0.005	21.92	12.67	62.61	3500
渣盆渣	<0.005	10.40	24.34	62.30	7500
锅巴渣	0.016	64.32	4.71	14.58	270
黑边渣	0.050	12.57	2.92	27.31	23
旋风除尘灰	0.034	16.64	3.14	5.98	20
布袋除尘灰	0.028	35.54	1.68	5.88	25

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表 4 现场输出物料中的平均P元素总量

Table 4. Average total P element amount in field output materials

物料名称	总P/(kg·炉⁻¹)
成品FeV50	6.30
锭模渣
渣盆渣
锅巴渣	0.04
黑边渣	0.01
旋风除尘灰	0.007
布袋除尘灰	0.007
残合金与细粉	0.986
总计	7.35

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表 5 球磨铁粒筛下物的元素赋存形式的分析

Table 5. Analysis of the form of elements in the sieved ball-milled iron particle

矿物	杂质元素含量/%
矿物	Al	C	Ca	Cl	Cr	Cu	Fe	K	Mg	P
金属铁	0.00	0.00	0.00	0.00	0.00	0.00	39.02	0.00	0.00	0.00
钒尖晶石	6.78	0.00	0.07	0.00	55.15	0.00	16.12	0.00	2.21	0.00
铁橄榄石	0.65	0.00	15.70	0.00	8.49	0.00	15.56	1.12	34.13	0.00
辉石	12.84	0.00	11.05	4.96	0.00	0.00	0.14	2.67	7.37	0.00
磷灰石	26.27	0.00	36.02	0.00	0.00	0.00	4.08	40.26	4.94	98.99
氧化铁	19.28	0.00	8.17	79.60	32.73	100.00	21.29	2.30	11.19	0.00
方镁石	0.89	0.00	0.66	15.04	0.00	0.00	0.05	0.00	27.20	0.00
玻璃质	12.23	0.00	9.84	0.00	0.39	0.00	1.27	50.12	1.53	0.00
钒酸钙	0.31	0.00	0.83	0.00	0.00	0.00	0.03	0.00	0.33	0.00

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