ANALYSIS OF THE EFFECT OF BASELINE TEMPERATURE ON THE REACTIVITY OF ROCKS CONTAINING SULFIDE MINERAL WITH AMMONIUM NITRATE-BASED EXPLOSIVE

• Main Author: Faris Adinata Harisman, Banu
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/67747
• Institution: Institut Teknologi Bandung

In mining activities, the explosives that are commonly used are ammonium nitrate (AN) based explosives. When AN is filled into the blast hole and the surrounding rock contains sulfide minerals, the AN will decompose and be accompanied by an increase in temperature. The reaction between AN and sulfide minerals is known as reactive ground which has the potential to cause premature detonation which is dangerous for safety. One of the reactive ground testing methods is the Isothermal Reactive Ground Test method developed by the Australian Explosive Industry and Safety Group (AEISG). Based on the AEISG (2017) standard, one of the test standards is carried out at a temperature of 55°C. In reality, the blast hole temperature is not always in that range. This study aims to determine the effect of the baseline temperature on the reactivity of rocks containing sulfide minerals and ammonium nitrate, by testing at a constant temperature of 55°C, 50°C, 47.5°C, 45°C, and 40°C. This study was also conducted to determine the temperature limit at which reactivity does not occur. After testing with a time limit of 4 hours, it is known that the relationship between the constant temperature and the rock reactivity is that the sample will become less reactive as the constant temperature decreases. Another result is that the rock has become unreactive at 45°C.