On the determination of specific work of coal crushing
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2015, Vol 4, Issue 4
Abstract
Mathematical Rittinger, Kirpichev-Kick and Bond laws for relations of crushing energy and linear sizes of a crushed piece of rock are analyzed. It has been found that the disadvantage of the formulae describing these laws is in unknown coefficients of proportionality without developing the corresponding technique of their determination. It has been suggested that crushing work for grinding be measured using formulae of the mechan-ics of rigid deformable bodies. Dependencies of ultimate strength and crushing work on an index of size reduction and those of crushing work on specific surface energy of coal crushing under various values of specific surface energy are derived.
Authors and Affiliations
V. Poshyvalov
Keywords
Related Articles
- EP ID EP355887
- DOI -
- Views 88
- Downloads 0
Assessment of demand of national market for information on Earth remote sensing.
The work aim is to analyze the feasibility of the tasks of economic activities in Ukraine through the Earth remote sensing data with spatial resolution of 5 m and more. The potential of the national market of the Earth r...
. Parametric determination of hydrodynamic processes in feed system of space stage in stopping and starting the cruise engine
A methodic approach to a parametric determination of hydrodynamic processes in the feed system of the launch vehicle space stage in starting and stopping the cruise engine for a complex mission is developed. The approach...
Effects of changes in form of wheel profiles in operation on stable running freight cars
The work purpose was to study the effects of changes in the form of profiles of the railway wheels in opera-tion on stable running the freight cars. Methods for mathematical modeling and computer simulation, the theory o...
Results of studies of kinematic and power parameters of transmission for mine diesel locomotive with differential at output
The work is devoted to the problem of a complex study of variations in the power, kinematic and energy parameters of a hydrostatic mechanical transmission "with a differential at output" during its operation in traction...
Numerical simulation of axially symmetric flow around bodies of simple configurations using hierarchy grids
A variation of the statistic Monte-Carlo method for the stationary statement, namely test particles method (TPM), is considered. The study objective is to develop the TPM using computations on hierarchy grids. The replac...