In this paper, relevant mechanical tests were conducted on sintered ore specimens, and found that the ultimate strength of sintered ore under different strain rates had significant differences. The JH-2 constitutive model of sintered ore was obtained based on relevant tests and theoretical derivation, and used finite element method to reveal the crushing mechanism of sintered ore, and found that the maximum stress was mainly concentrated near the tooth root and tooth tip. By analyzing the variation rate of the fitted nonlinear surfaces about the stress of the tooth root and tooth tip versus the width of the tooth root and tooth tip and considering the engineering reality, it was found that the best choice of the roll tooth parameters was found when the tooth tip and root widths were both 160 mm.
Get full access to this article
View all access options for this article.
References
1.
KouM, ZhangZ, ZengW, et al.Research progress on optimization technology and its model of ore-blending for sinter process. Iron Steel (Beijing, China). 2022;57(2):1–11.
2.
GuoZ, ZhanR, ZhuD, et al.Experimental study on iron ore powder pelletizing sintering. Sinter Pell. 2022;47(1):87–94 + 103.
3.
NiuL, LiuZ, ZhangJ, et al.Effect of mineral composition of iron ore on metallurgical properties of sinter. Iron Steel (Beijing, China). 2019;54(9):27–32 + 38.
4.
KangY.A practical study on improving the quantity and quality of sintered minerals in sintering machines. Metall Mater. 2022;42(6):104–106.
5.
WenZ, YuS, CenM.Study on metallurgical properties of sinter with different sizes. Res Iron Steel. 2015;43(1):5–8.
6.
ZhaoJ.Improving of wear resistance of sintering machine discharge device metallurgical equipment. Metall Equip. 2020;257(1):59–62.
7.
LiJ.Analysis and application of wear-resistant welding materials for single-tooth roller. J Hubei Adult Edu Inst. 2019;25(4):69–71.
8.
JunW.Restoration of Sinosteel sintered single roll crusher. Constr Mach Dig. 2021;227(2):9–11.
9.
GuanL, YangT, RenX.Influence of shearer drum crown wheel cutting pick angle to cutting loading characteristic. J Min Strata Control Eng. 2018;23(2):15–17.
10.
ZhaoL, LiuH, ZhouW.A study on the dynamic transmission law of spiral drum cutting coal rock based on ANSYS/LS-DYNA simulation. Complexity. 2019;2019:1482051.
11.
WangJ.Research on optimization design of key parameters of spiral drum pick of mine shearer. Mach Manage Dev. 2021;36(7):112–114.
12.
JingY, YuanX, JiangL, et al.Numerical simulation and field experimental study on rock breaking in high speed rotating percussion drilling. J China Univ Pet, Ed Nat Sci. 2019;43(1):75–80.
13.
ZhaoL, ChenL, SuM, et al.Modeling and simulation on crushing process of impact crusher. J China Coal Soc. 2013;38(8):1496–1502.
14.
LiQ, FuW, HuangZ, et al.Rock breaking characteristics of a single cone-PDC combined drill bit in hard formation. China Mech Eng. 2019;30(22):2683–2690.
15.
ZhuX, GuoG.Effects of ratio of dynamic load to static one on rock-breaking efficiency. J Vib Impact. 2019;38(1):22–28.
16.
MenezesPL.Influence of cutter velocity, friction coefficient and rake angle on the formation of discontinuous rock fragments during rock cutting process. Int J Adv Manuf Technol. 2017;90(9):3811–3827.
17.
ZhaoY, ZhangC, ZhangZ, et al.The rock breaking mechanism analysis of axial ultra-high frequency vibration assisted drilling by single PDC cutter. J Pet Sci Eng. 2021;205:108859.
18.
WangM.Dynamic compression constitutive model and numerical analysis of ultra-high temperature ceramic composites [master’s thesis]. Guizhou (Guangdong): Guizhou University; 2021.
19.
GradyDE.Dynamic failure in brittle solids. Europe-U.S. Workshop on Fracture and Damage in Quasibrittle Structures: Experiment, Modeling and Computer Analysis; 1994 September 21–23; Prague, Czech Republic. United States: [Publisher Unknown]; 1994.
20.
LangeMA, AhrensTJ.The dynamic tensile strength of ice and ice-silicate mixtures. J Geophys Res Solid Earth. 1983;88(B2):1197–1208.
21.
TongZ, YeL, XiaZ, et al.Simulation analysis on collision performance of polar cruise vessel based on JH-2 sea ice model. Chin J Ship Res. 2021;16(5):87–94.
22.
LiY, ZhangL.Experimental study of low-pressure Hugoniot properties of two metallic materials. Proceedings of the Sixth National Conference on Experimental Techniques of Explosive Mechanics; 2010 July 23; Changsha, Hunan, China. [Publisher Unknown], pp. 424–428.
23.
Brown ET, HoekE.Underground excavations in rock. Boca Raton, FL: CRC Press; 1980.
24.
QinW, JiangZ, XuM, et al.Research on construction optimization of small spacing tunnel based on Hoek-Brown elastoplastic damage model. J. Guangxi Univ Nat Sci Ed.2022;47(4):843–853.
25.
BanadakiMMD, MohantyB.Numerical simulation of stress wave induced fractures in rock. Int J Impact Eng. 2011;40:16–25.
26.
WangZ, LiY, HuangY.Parameter determination of JH-2 model and numerical analysis of repeated penetration of granite. J. Harbin Inst. Technol. 2020;52(11):127–136.
27.
PanW, ZhaoZ, FengL, et al.Research on mineralization characteristic of sinter. Sinter Pell. 2020;45(03):1–7 + 12.
28.
BaohuaD.Optimization of sintering process for low-silica ore production. China Steel Focus. 2021;427(17):9–10.
29.
ShiH, GaoY, ZengS.Application of combination of electrostatic precipitator and sack dust remover in sintering machine tail. J Wuhan Eng Inst. 2020;32(2):39–41.
