BLASTING FRAGMENT MATERIAL ANALYSIS IN CRUSHER AND EVALUATION OF BLASTING PATTERN OF D QUARRY, PT. X

• Main Author: RIFKY G.M. (NIM 12103050), AKBAR
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/9853
• Institution: Institut Teknologi Bandung

Blasting activity of D Quarry plays significant role to entire mining activity of the Quarry which covers blasting sequence, hauling and crushing. This research is aimed to investigate the percentage of material fragments which enter the crusher bigger than maximum opening size of crusher (80 cm) and may often caused crusher's malfunction, by using a software Split Engineer Desktop 2.0TM. This research was also aimed to evaluate current blasting pattern by using Kuz-Ram equation in order to obtain new blasting pattern to increase the percentage of material which supported by the crusher specification. The average material percentage less than maximum opening size which enter the crusher is 77% each blasting. Evaluation by using Kuz-Ram resulted in increasing of the percentage to 89% each blasting by using new blasting pattern recommendation: 3,5 inch blast hole diameter with 3,5 m x 2,5 m, or 6 inch blast hole diameter with 5 m x 4,5 m.