The properties of the powder that makes the basis of hard alloys used in the crushing of underground resources

Abstract

Today, many countries are extraction the underground resources (non-ferrous and rare metals) by having a leading processing plants. In Uzbekistan, metals such as gold, silver, copper, uranium, rhenium, and tungsten are mined from underground resources and produced as finished products. A significant part of the costs of the extraction of underground resources is spent on the processes of crushing and grinding crushing minerals. Hard alloys used in the process of crushing and grinding ores are produced based on metals such as tungsten and cobalt. This article presents scientific-practical research on the properties of powders that form the basis of tungsten carbide-cobalt-based hard alloys used in crushing underground resources. During the research, the chemical composition of tungsten and cobalt carbide powders chosen as raw materials, the location of the powders in the raw materials, the granulometric sizes of the powders, and their morphology were studied. In all conducted studies, tungsten carbide powders produced at the JSC “Almalyk MMC” were used as a raw material to prepare samples of tungsten carbide-cobalt-based hard alloys and also as a binder. Cobalt powder produced in this enterprise was selected. All studies were carried out on a scanning electron microscope, JSM-IT200 (JEOL, Japan), at the Uzbekistan-Japan Youth Innovation Center.