This paper examines the design of comminution circuits and the issues that impact on comminution circuit efficiency. Circuit efficiency is discussed, principally from the perspective of power efficiency. However, operating efficiency, maintenance efficiency, capital expenditure and return on investment are often the key efficiency factors in project development outweighing power efficiency cons...

after harvesting, pistachio nuts are generally kept in storage before being exported. during handling, thenuts are exposed to external forces that cause mechanical damage to them. the increase of the mechanicaldamage is a function of storage conditions, especially temperature. this research investigated the effect ofstorage temperature (25, 5, -5, -15°c), on the mechanical properties of pistach...

The modeling of high velocity impact into brittle or quasibrittle solids is hampered by the unavailability of a constitutive model capturing the effects of material comminution into very fine particles. The present objective is to develop such a model, usable in finite element programs. The comminution at very high strain rates can dissipate a large portion of the kinetic energy of an impacting...

Microwave heating stands as a strong candidate for selective liberation of multiphase materials like concrete. It takes advantage of the differences in thermal, dielectric and mechanical properties of each of the components to create stress gradients that can lead to grain boundary fracture and embrittlement. The work and results reported are concerned with selective liberation of concrete’s ra...

The comminution process, particularly grinding, is very important in the mineral processing industry. Some characteristics of ore particles, which occur as a product of grinding process, have a significant impact on the effects of further ore processing. At the same time, this process requires a significant amount of energy which significantly affects the overall processing costs. Therefore, in...

Quantitatively predicting the dynamic response and energy partition of granular fault gouges under shear remains a major challenge in seismology. Earthquake laboratory experiments are limited by capacity of equipments and thus cannot provide similar conditions in real earthquake ruptures. This motivates the development of computational models of granular fault gouge that accurately predict thei...

1. Significance of Mineral Beneficiation 2. Overview of Mineral Processing Systems 3. Components of Mineral Beneficiation Technology 4. Comminution System 5. Gravity Separation 6. Flotation 7. Magnetic Separation 8. Electrostatic Separation 9. Solid-Liquid Separation and Waste Treatment 10. Other Methods of Mineral Extraction 11. Disposal of Solid Wastes and Waste Water Treatment 12. Conclusion...