高钛型高炉渣中Ca、Mg、Al元素浸出特性研究

皇甫林; 姜洋; 邱正秋; 王奎

doi:10.7513/j.issn.1004-7638.2023.04.003

高钛型高炉渣中Ca、Mg、Al元素浸出特性研究

doi: 10.7513/j.issn.1004-7638.2023.04.003

皇甫林^{1, 2,},
姜洋^{1, 2},
邱正秋¹,
王奎^{1, 2}

1.
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
2.
成都先进金属材料产业技术研究院股份有限公司先进功能材料研究所, 四川成都 610305

详细信息

作者简介:
皇甫林，1992年出生，男，四川泸州人，博士，工程师，研究方向为固废资源化利用，E-mail：l_huangfu@163.com

中图分类号: X757,TD989
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出版历程
- 收稿日期: 2023-05-12
- 刊出日期: 2023-08-30

Research on the leaching characteristics of Ca, Mg, Al elements in high titanium blast furnace slag

Huangfu Lin^{1, 2
,},
Jiang Yang^{1, 2},
Qiu Zhengqiu¹,
Wang Kui^{1, 2}

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
2.
Department of Advanced Functional Materials, Chengdu Institute of Advanced Metallic Material Technology and Industry Co., Ltd., Chengdu 610305, Sichuan, China

摘要

摘要: 为了充分利用高钛型高炉渣中的价值元素，通过对其理化性质进行分析，提出采用盐酸水热浸出的方式分离出高钛型高炉渣中Ca、Mg元素，重点考察了反应条件参数对高钛型高炉渣中元素浸出特性的影响。试验结果显示，随着盐酸浓度、盐酸量、反应温度和反应时间的增加，高钛型高炉渣中Ca、Mg、Al元素浸出率均呈上升趋势。其中，Mg、Al元素浸出率在高于95%后基本保持稳定，而Ca元素浸出率最高可接近100%。在盐酸浓度为4 mol/L、盐酸量为理论计算可完全溶解高钛型高炉渣中Ca、Mg、Al元素的1.5倍、反应温度为150 ℃、反应时间为10 h的条件下，可使高钛型高炉渣中Ca、Mg元素完全解离，浸出残渣中MgO、CaO含量均在1%以下，而TiO₂、SiO₂、Al₂O₃总含量则高于95%，可满足制备多孔吸附材料的要求。该研究成果有望为高钛型高炉渣的资源化高效利用提供数据支撑。
- 高钛型高炉渣 /
- 资源化利用 /
- 盐酸 /
- 水热浸出 /
- 多孔吸附材料
Abstract: To make full use of the valuable elements in high titanium blast furnace slag, the physical and chemical properties were analyzed. The method of hydrochloric acid hydrothermal leaching was proposed to separate Ca and Mg elements from high titanium blast furnace slag. And the influence of reaction condition parameters on the leaching characteristics of elements in high titanium blast furnace slag was studied. The results reveal that with the increase of hydrochloric acid concentration, hydrochloric acid amount, reaction temperature and reaction time, the leaching efficiency of Ca, Mg and Al elements in high titanium blast furnace slag all increase. Among them, the leaching efficiency of Mg and Al remain stable when they are higher than 95%, while the leaching efficiency of Ca can raise to nearly 100%. The Ca and Mg elements in high titanium blast furnace slag can be entirely dissociated when the concentration of hydrochloric acid is 4 mol/L, the amount of hydrochloric acid is 1.5 times of theoretical acid amount required for the entire dissolution of Ca, Mg and Al elements in high titanium blast furnace slag, the reaction temperature is 150 ℃, the reaction time is 10 h. Meanwhile, the amounts of both MgO and CaO in the leaching residue are all below 1%, and the aggregate amounts of TiO₂, SiO₂ and Al₂O₃ are higher than 95%, which can fulfill the requirements of preparing porous adsorption materials. The results of this research are anticipated to provide data support for the efficient utilization of high titanium blast furnace slag.
- high titanium blast furnace slag /
- resource utilization /
- hydrochloric acid /
- hydrothermal leaching /
- porous adsorption materials

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图 1 高钛型高炉渣的XRD谱（a）和SEM形貌（b）

Figure 1. XRD pattern (a) and SEM image (b) of high titanium blast furnace slag

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图 2 高钛型高炉渣中各元素浸出率随盐酸浓度的变化

Figure 2. Variations in leaching efficiency of Ca, Mg, Al elements under different hydrochloric acid concentrations

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图 3 不同盐酸浓度时高钛型高炉渣中Ca、Mg、Al元素浸出率随盐酸量的变化

Figure 3. Variations in leaching efficiency of Ca, Mg and Al elements under different hydrochloric acid amounts with different hydrochloric acid concentrations

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图 4 高钛型高炉渣中Ca、Mg、Al元素浸出率随反应温度的变化

Figure 4. Variations in leaching efficiency of Ca, Mg and Al elements under different reaction temperatures

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图 5 高钛型高炉渣中Ca、Mg、Al元素浸出率随反应时间的变化

Figure 5. Variations in leaching efficiency of Ca, Mg and Al elements under different reaction time

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表 1 高钛型高炉渣的主要化学组成

Table 1. Main chemical composition of high titanium blast furnace slag %

MgO Al₂O₃ SiO₂ SO₃ K₂O CaO TiO₂ MnO Fe₂O₃

8.44 13.49 22.84 1.55 0.71 28.36 20.46 0.80 1.74

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