My Research Papers

Papers

I have completed two papers so far, with a third in preparation. For copyright reasons I cannot publish the complete documents but these abstracts and references should help you find them.

The Development of a Database of Rock Properties to Assist in the Design and Development of Crushing Plant
K Jackson, DJ Reddish and LR Stace

School of Chemical, Environmental and Mining Engineering
University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom

ABSTRACT: Although there has been a considerable amount of research into comminution, especially since the Second World War, manufacturers still depend heavily on the experience of their staff when deciding if a crushing plant is suitable for a particular site. Making a poor selection can lead to operational problems that may ultimately make the difference between profitability and closure for an operation. Nowadays, contracts are issued with strict performance requirements and severe penalty clauses, which reflects the importance of the equipment to the companies. The results of conventional rock-property tests have been shown not to correlate adequately and reliably to a rock's crushability. Any tests that do show a correlation often apply only to a particular type of machine. This paper describes research to develop a suite of tests to improve this correlation.

This deals with my work on compression tests where the complete stress/strain curve can be captured at much higher strain rates than usual and, more important, very cheaply. It is being presented at the International Conference on Geomechanics/Ground Control in Mining & Underground Construction to be held at the University of Wollongong, New South Wales in July 1998. If you would like details of this conference, please click here .

Research Towards a Rock Classification System for Crushing Purposes
K Jackson and DJ Reddish

ABSTRACT: Although there has been much research into rock fragmentation, crusher manufacturers still rely heavily on the experience of their engineers when preparing a specification. Operators are in a similar position when selecting a machine. The economic balances of modern mines and quarries mean that a poor choice of plant can make the difference between success and failure. Clearly, the establishment of a scientific approach to rock classification in this field would be of considerable benefit. Research has been carried out to develop a suite of laboratory tests for use in a rock classification system for crushing purposes. The work described in this paper is one strand of this programme, which covers work both in the laboratory and at operating sites.

This one is being presented at the Ninth European Symposium on Comminution to be held at the Ecole des Mines d'Albi, in the South of France, between the 8th and 10th September 1998. Details are available from this site. The paper describes research into the relationship between energy and fragment distributions on a laboratory-scale jaw crusher.