Effects of Liquidus Temperature and Liquid Amount on the Fluidity of Bonding Phase and Strength of Sinter

Jiang, Xin; Zhao, J. Z.; Wang, Lin; An, Haiwei; Gao, Qiuzhi; Zheng, Haiyan; Shen, Fengman

doi:10.2355/isijinternational.isijint-2020-243

Cited by 13 publications

(2 citation statements)

References 26 publications

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“…[30][31][32] The formation characteristics of SFCA is mainly dominated by the factors such as the chemical compositions of iron ores, sinter basicity, gas atmosphere and cooling rate. [33][34][35][36][37] Normally, the higher sinter basicity, iron grade and SiO 2 content of iron ores and oxygen partial pressure contribute to the formation of SFCA while the excessive Al 2 O 3 and MgO contents of iron ores and overquick cooling rate during sintering are adverse to the formation of SFCA. In general, SFCA can be divided into two types on the basis of the composition, morphology and crystal structure, i.e.…”

Section: Strength Of Bonding Matrixmentioning

confidence: 99%

Distinct Difference in High-temperature Characteristics between Limonitic Nickel Laterite and Ordinary Limonite

et al. 2022

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In order to achieve the effective utilization of limonitic nickel laterite for stainless steel production at lower cost, the distinct difference in high-temperature characteristics between limonitic nickel laterite and ordinary limonite has been systematically expounded via compact sintering method and the comparative analysis of the relevant sintering performance at the suitable basicity has also been conducted through sinter pot tests. The results indicate that limonitic nickel laterite possesses much poorer assimilability and liquid phase fluidity due to the abundant high-smelting minerals compared with ordinary limonite. The strength of bonding matrix of limonitic nickel laterite is relatively better as the basicity is not exceed 1.4 while that of ordinary limonite is maintained at a higher level with the basicity of no less than 1.8. Meanwhile, the former is far weaker than the latter due to the much less amount of liquid phase, rather higher porosity and looser microstructure of the bonding matrix. Limonitic nickel laterite is identified as a far more refractory ore for sintering compared with ordinary limonite, further supported by sinter pot tests. It is essential to strengthen limonitic nickel laterite sintering from the standpoints of how to promote the liquid phase formation and densification of the sinter.

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Section: Strength Of Bonding Matrixmentioning

confidence: 99%

Distinct Difference in High-temperature Characteristics between Limonitic Nickel Laterite and Ordinary Limonite

et al. 2022

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“…Research by a large number of scholars on the mathematical model of the sintering process provides guidance for the optimization of the sintering process, saves the production cost of enterprises, and maximizes the benefits of enterprises. − The new contribution is that this article simulates the temperature field (burning zone position, temperature, sintering time, etc.) and the changing trend of O 2 and CO 2 concentrations in sintering tail gas in the single-layer and double-layer sintering processes of the sintering machine.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Internal Temperature Field and Flow Field in a Double-Layer Sintering Bed

et al. 2022

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To meet the requirements of Angang’s blast furnace smelting for sintering output, improve the double-layer sintering process, and determine the appropriate parameters for the double-layer sintering process, this article established a mathematical model and simulated the temperature field in the burden bed and the changing trends of O2 and CO2 concentrations in the sintering tail gas during the single-layer and double-layer sintering processes of the sintering machine. The simulation results show that (1) compared with the sintering time of single-layer sintering in the baseline period, the error of the single-sintering model is only about 2.5%, and the model’s accuracy is high. (2) Two combustion zones of double-layer sintering increase O2 consumption, and the O2 concentration in the tail gas decreases significantly. (3) The thickness of the upper and lower feeding layers of double-layer oxygen supplement sintering is 650 + 300 mm better than that of 600 + 350 mm. (4) The optimal secondary ignition time is 15 min.

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Effects of High-Temperature Characteristics of Calcium Ferrites on the Sinter Strength

Rocha

Cho

Kim

et al. 2022

Metall Mater Trans B

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Effects of Liquidus Temperature and Liquid Amount on the Fluidity of Bonding Phase and Strength of Sinter

Cited by 13 publications

References 26 publications

Distinct Difference in High-temperature Characteristics between Limonitic Nickel Laterite and Ordinary Limonite

Distinct Difference in High-temperature Characteristics between Limonitic Nickel Laterite and Ordinary Limonite

Simulation of the Internal Temperature Field and Flow Field in a Double-Layer Sintering Bed

Effects of High-Temperature Characteristics of Calcium Ferrites on the Sinter Strength

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