FEATURES OF DISINTEGRATION OF LUMPY GEOMATERIALS IN CRUSHING UNDER DYNAMIC EFFECTS

The article presents the experimental research data on determination of disintegration characteristics of lumpy geomaterials in crushing under dynamic effects using DKD-300 crusher designed at the Mineral Dressing Laboratory of the Institute of Mining of the North, SB RAS. The experimentally revealed interconnection between the grain-size compositions of the initial and crushed materials shows that disintegration of smaller size lumps results in the higher yield of larger particles while crushing of larger size ore produces the increased yield of fines. The studies demonstrate that larger particles disintegrate more intensively under impact crushing. The studies into the nature of failure of gold-bearing quartz ore and dolomite limestone under the impact crushing reveals differences in disintegration of geomaterials of uniform and complex texture.

Keywords

Сrushing, crusher, design, dressing, distribution, granulometric characteristic, ore pretreatment, size, gold.

Issue number: 11
Year: 2018
ISBN:
UDK: 622.233
DOI: 10.25018/0236-1493-2018-11-0-154-160
Authors: Lvov E. S.

About authors: Lvov E.S., Junior Researcher, e-mail: lvoves@bk.ru, Chersky Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, 677018, Yakutsk, Republic of Sakha (Yakutia), Russia.

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