Optimization of roller teeth based on the analysis of the crushing mechanism of sintered ore

ABSTRACT

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.

KEYWORDS:

• Sintered ore
• single roll crusher
• crushing mechanism
• JH-2 constitutive model
• roll tooth optimization

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The authors are grateful for financial support from the Zhongye Changtian Research and Development Fundamental Research Fund Project [Grant No. 2021JCYJ03], the National Natural Science Foundation of China [Grant Nos. 12072309] and the Key project of Hunan Provincial Department of Education [Grant No. 22A0133].