The Transport Stability of Flotation Metal Ore Concentrates which are Liable to Liquefaction

Abstract

Safety of maritime transport of fine-grained materials, e.g. metal ore concentrates depends on the ability to control the properties of these cargoes. The dynamic situation, caused by vibration and pressure of layers of cargo during sea transport, makes it change its physical properties, porosity, bulk density, degree of compaction and mechanical properties, for example shear strength. The new properties of the cargo result in that there is a risk of its movement, as a consequence of the phenomenon of the liquefaction. In the present study were analysed and evaluated parameters that determine the ability to liquefaction of flotation metal ore concentrates characterized by different way of sourcing, chemical composition and fragmentation.

Keywords

• mineral concentrates
• stability
• liquefaction