A research of the effect of an underwater electric explosion on the selectivity of destruction of quartz raw materials

Abstract

The work is devoted to the study of the effect of an electric explosion on the selectivity of the destruction of quartz raw materials. The object of the study is quartz ore of the Nadyrbay deposit of the Republic of Kazakhstan. An electrohydroimpulse plant for crushing and grinding quartz raw materials has been developed and assembled. Using the electrohydroimpulse method, the granulometric composition of quartz can be adjusted. This makes it possible to adjust the magnitude of the voltage in the discharge channel and time. In this technology, quartz ore processing was carried out with an increase in the discharge voltage of the storage from 14 kV to 25 kV, the length of the interelectrode distance from 8 to 12, the capacitance of the capacitor 0.5 µF, 0.75 µF and the processing time of 5 min. Using the electrohydroimpulse method, quartz ore particles with an initial fraction of 5 mm, 10 mm and 1 mm were crushed to 0.8. The results of the grinding of quartz raw materials with the influence of an underwater electric explosion in a liquid medium allowed us to determine the degree of grinding of the material. The obtained results can be used in the course of studying the characteristics of crushing and grinding of ores. In the food industry, quartz sand within 0.25–0.5 millimeters can be used as a filler to create filters for water purification, as well as products from oil, industrial effluents, etc. Particles ranging in size from 0.5 to 1 millimeter can be used for rough processing of metal, stone and glass. The structural and quantitative analysis of powdered quartzite samples was made using a scanning electron microscope and the stoichiometry of the elements was calculated

Identification of the impact of electric pulse action on the disintegration of a natural mineral

“…During the experimental work, a working cell of an electric pulse installation and a method for selective destruction of the quartzite mineral were developed. From the features of electric pulse crushing processes, it follows that the efficiency of the crusher itself will be higher, the smaller the material fractions [12]. This is explained by the fact that an underwater spark gives off energy with its surface, and therefore, the denser the material surrounding the discharge zone (the finer it is), the more rational the energy released by the discharge channel [13][14][15].…”

Identification of the effect of electric pulse discharges on the recycling of household glass

“…Since the research work is devoted to the processing of cullet using the electric pulse method, an experimental stand has been assembled for the production of glass powder. The basis of the developed electric pulse technology is the electrohydraulic Yutkin effect, widely used in the chemical industry [16]. The electric pulse installation is made in the form of functional blocks, consisting of a control panel, a generator with a spark gap, and a protection unit with a capacitor (Fig.…”