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内容大纲
本书围绕钒钛磁铁矿(VTM)在烧结与球团过程中的工艺优化、原料替代与强化措施展开,系统整合作者近年在该领域发表的代表性学术论文。主要内容涵盖:硼系助熔剂(如B2O3)对VTM烧结矿与球团矿的高温冶金性能、显微组织与微观强度的影响;含钒钛烧结过程中低品位资源(如海砂)替代高品位精矿的可行性研究;精磨石灰石与白云石在球团配料中的碱度调控与膨胀行为;返矿嵌入技术对烧结透气性、产率和强度的影响规律;富氧烧结条件下,燃烧效率、烧结矿强度与脱硫反应的协同提升机制。
本书通过系统归纳实验研究结果、微观组织分析与烧结锅试等手段,提出了多种提升VTM资源利用效率和烧结产品性能的技术路径。兼具理论深度与工程实用价值,适用于钢铁冶金、资源综合利用及烧结球团工艺研究相关领域的科研人员与工程技术人员参考。 -
作者介绍
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目录
Chapter 1 Introduction to Vanadium-Titanium Magnetite
1.1 Distribution and characteristics of VTM resources
1.1.1 Global distribution and characteristics
1.1.2 Distribution and characteristics in China
1.2 Comprehensive utilization routes for vanadium-titanium magnetite resources
1.2.1 Blast furnace--converter route
1.2.2 Pre-reduction--electric furnace process
1.2.3 Reduction--grinding--separation route
1.2.4 Shaft furnace--electric furnace route
1.2.5 Rotary kiln--electric furnace process
1.2.6 Rotary hearth furnace--electric furnace process
1.3 Summary
References
Chapter 2 Agglomeration for Vanadium.Titanium Magnetite and Metallurgical Performance of Agglomerated Products
2.1 Agglomeration target
2.2 Agglomeration methods
2.2.1 Sintering
2.2.2 Pelleting
2.3 Metallurgical performance of agglomerated products and characterization methods
2.3.1 VTM sinter
2.3.2 VTM pellets
2.4 Summary
References
Chapter 3 Measures to Improve the Metallurgical Performance of Vanadium-Titanium Magnetite Agglomerated Products
3.1 Measures for vanadium-titanium magnetite sinter
3.1.1 Granulation optimization
3.1.2 Ore blend optimization
3.1.3 Additives:boron containing materials
3.2 Measures for vanadium-titanium magnetite pellets
3.2.1 Grinding pre-treatment
3.2.2 Ore blend optimization
3.2.3 Additives : solid fuels, fluxes, and boron-containing compounds
3.3 Application of boron-containing materials in VTM furnace feed
3.3.1 Application of boron-containing materials in sinter
3.3.2 Application of boron-containing materials in pellets
3.4 Summary
References
Chapter 4 Mechanism of B203 in Regulating the Microstructure of Vanadium-Titanium Magnetite Sinter
4.1 Background
4.2 Experimental work
4.2.1 Raw materials
4.2.2 Methods
4.3 The effect of B203 addition on the sintering of vanadium-titanium magnetite concentrates
4.3.1 Performance indicators of H-VTM sinter
4.3.2 Metallurgical properties of H-VTM sinter
4.3.3 Microstructure of H-VTM sinter
4.4 Summary
References
Chapter 5 Mechanism of B203 in Regulating the Microstructure of Vanadium-Titanium Magnetite Pellets
5.1 Background
5.2 Experimental work
5.2.1 Raw materials
5.2.2 Experimental process of pellets
5.2.3 Pores area ratio and fracture toughness
5.3 Changes in the strength of VTM pellets with different B203 additions
5.4 Changes in microstructure of VTM pellets with different BzO3 additions
5.5 Summary
References
Chapter 6 Oxygen-enriched Sintering Technology for Vanadium-Titaniuv~ Magnetite
6.1 Background
6.2 Experimental work
6.2.1 Raw materials
6.2.2 Experimental method-variation of oxygen content
6.2.3 Experimental method-variation of sintering stages with fixed oxygen content
6.2.4 Characterization
6.3 Influence of oxygen enrichment at different concentrations
6.3.1 Mineralogy and microstructure
6.3.2 Sintering index
6.3.3 Desulphurization
6.4 Influence of oxygen enrichment at different stages
6.4.1 Sintering behavior image
6.4.2 Sintering parameters
6.4.3 Mineral composition and microstructure
6.4.4 Metallurgical properties
6.4.5 Correlation mechanism of different oxygen-enriched stages
6.5 Summary
References
Chapter 7 Function of Finely Ground Limestone and Dolomite on the Regulation of Vanadium-Titanium Magnetite Sinter Basicity
7.1 Background
7.2 Experimental work
7.2.1 Raw materials
7.2.2 Experimental methods
7.3 Moisture and drop strength of green pellets
7.4 Cold compression strength of roasted pellets
7.5 Reduction swelling index of pellets
7.6 Summary
References
Chapter 8 The Effect of Embedding Returned Fines on the Sintering Process of High-Proportion Vanadium-Titanium Magnetite
Concentrates
8.1 Background ,
8.2 Experimental work
8.2.1 Raw materials
8.2.2 Metallurgical characterization of VTM sinter
8.3 Effect of particle size range of returned fines for embedding
8.4 Effect of mass ratio of returned fines for embedding
8.5 Effect of layer location of returned fines for embedding
8.6 Effect of mass ratio of returned fines for embedding on sinter bed permeability
8.7 Summary
References
Chapter 9 Effect of Indonesian Sea Sand on Sinter's Quality when
Replacing Vanadium-Titanium Magnetite Concentrate
9.1 Background
9.2 Experimental work
9.2.1 Experimental apparatus and process
9.2.2 Ore blending scheme and test conditions
9.3 Influence of the additive proportion of sea sand on sintering
9.4 Influence of the additive proportion of sea sand on sinter's quality
9.5 Summary
References
Chapter 10 Industrial-Scale Applications and Future Perspectives
10.1 Industrial practice of high-proportion VTM concentrate sintering technology
10.2 Industrial practice of full VTM concentrate pelletizing technology
10.3 Metallurgical properties of vanadium-titanium sinter and pellet products in representative Chinese enterprises
10.4 Future development trends and technological challenges
10.4.1 Maximization and intelligentization of high-proportion pellet smelting
10.4.2 Disruptive breakthroughs in low-carbon and zero-carbon technologies
10.4.3 The multi-element synergistic extraction and value chain extension
10.5 Summary
References
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