Crushing Cavity Design
The crusher liners which compromise the Gyradisc crushing cavity design are made up of an upper liner which is assembled to the bowl and a lower liner which is mounted on the head or main shaft assembly. Due to the wide range of feed and product requirements, the availability of variations in cavity design becomes [...]
Primary Crushing Operation
This module describes basic job steps, potential hazards and accidents, and recommended safe job procedures for primary crushing operations. This job is normally done by the crusher operator, but may be done by other occupations. Crusher operators must protect themselves, and other people in the area, from accidents and injuries resulting from operation of the [...]
Mineral processing: crushing
Crushing is the first stage in the comminution unit operation. Two very different crushing methods are used depending on the type of rock to be crushed. As a broad principle, hard abrasive rocks are crushed by compression between wear-resistant surfaces, and softer less-abrasive materials are crushed by impact, shear, or also by compressive mechanisms. Hard-rock, run-of-mine material has to [...]
Talvivaara primary crushing capacity boosted by crusher cavity optimization
It is reported that Talvivaara mine, located in Northern Finland, is today the biggest sulfide nickel ore mine in Europe. In close cooperation with Metso, and with crusher cavity optimization, Talvivaara recently boosted its primary crushing capacity annually by up to 3.5 million tonnes. An open pit nickel deposit with 0.22% average content, Talvivaara is [...]
Australia’s largest in-pit crushing system taking shape
Four giant in-pit crushers are taking shape at Citic Pacific Mining’s Sino Iron project at Cape Preston in north west WA. They are being manufactured by ThyssenKrupp, with components being fabricated in Australia, Germany and China. In terms of installation progress, a spokesman from owner Citic Pacific Mining (CPM) told the AJM in mid- February [...]
Crushing the stereotype
Crushing the stereotype Ction Low costs and increased efficiency. The phrase sounds simple enough, but it is easier said than done. Mining companies want lower capital costs with fewer pieces of equipment and higher capacity from each unit even if the equipment is disposable after a reasonable service life. Operating cost efficiency is an important [...]