Diagnosis of the rock crushing modes to increase the efficiency of one-roll crusher operation

International Scientific and Research Conference on Knowledge-based Technologies in Development and Utilization of Mineral Resources 2017

矿业工程;地球科学

Nikitin, A.G.^1 ; Laktionov, S.A.^1 ; Medvedeva, K.S.^1

Siberian State Industrial University, 42 Kirova Street, Novokuznetsk

654007, Russia^1

关键词: Comparative analysis;    Crushed materials;    Energy capacity;    Energy cost;    Frictional forces;    Inclined surface;    Rock crushing;    Roll crushers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/84/1/012033/pdf
DOI  :  10.1088/1755-1315/84/1/012033

来源: IOP

【 摘 要 】

In the paper the hypotheses of destruction of brittle materials are given, as well as the analysis of energy costs for crushing. The methods of crushing are considered and a comparative analysis of their energy capacity and quality of the product is carried out. The parameters of the crushing process are determined from the point of view of their productivity and, accordingly, their energy efficiency. It is shown that the process of crushing in the one-roll crushers is due to the frictional forces acting between the surfaces of the roll and a piece of the crushed material, and also between the piece and the immovable jaw. The comparison of initial sizes of the crushed pieces in the crushes with the vertical and inclined surfaces of immovable jaw, which shows that with the increase in the bend angle of the immovable jaw the degree of crushing increases. Based on the analysis of forces acting on the crushed material in the one-roll crusher with the inclined surface of the jaw, the calculation of maximal possible value of the bend angle of the immovable jaw is performed.