外文翻译--在非圆柱辊式破碎机中粉碎.doc

（ 二 〇 一 三 年 六 月 原文： COMMINUTION IN A NON-CYLINDRICAL ROLL CRUSHER* P. VELLETRI ~ and D.M. WEEDON ~ ~[ Dept. of Mechanical Materials Engineering, University of Western Australia, 35 Stirling Hwy, Crawley 6009, Australia. E-mail piero@mech.uwa.edu.au § Faculty of Engineering and Physical Systems, Central Queensland University, PO Box 1319 Gladstone, Qld. 4680, Australia (Received 3 May 2001; accepted 4 September 2001) Velletri and Weedon, 2000 P. Velletri and D.M. Weedon, Preliminary investigations into a roll crusher with non-cylindrical rolls, Proc. Minprex 2000 International Congress on Mineral Processing and Extractive Metallurgy, AIMM, Melbourne (2000), pp. 321–328. ABSTRACT Low reduction ratios and high wear rates are the two characteristics most commonly associated with conventional roll crushers. Because of this, roll crushers are not often considered Jor use in mineral processing circuits, and many of their advantages are being largely overlooked. This paper describes a novel roll crusher that has been developed in order to address these issues.Referred to as the NCRC (Non-Cylindrical Roll Crusher), the new crusher incorporates two rolls comprised of an alternating arrangement of plane and convex or concave surfaces. These unique roll profiles improve the angle of nip, enabling the NCRC to achieve higher reduction ratios than conventional roll crushers. Tests with a model prototype have indicated thar even for very hard ores, reduction ratios exceeding l0:l can be attained. In addition, since the comminution process in the NCRC combines the actions of roll and jaw crushers there is a possibility O that the new profiles may lead to reduced roll wear rates. ? 2001 Elsevier Science Ltd. All rights reserved. Keywords: Comminution; crushing INTRODUCTION Conventional roll crushers suffer from several disadvantages that have led to their lack of popularity in mineral processing applications. In particular, their low reduction ratios (typica