| 摘要 |
FIELD: blasting works.SUBSTANCE: invention relates to packaged nitroester-containing explosives of 2nd class to be used for hard rock blasting in flooded heading and second working non-permitted mines at blasting by blast-hole charges. Proposed explosive comprises 7.0-9.0 wt % of nitroester sensitiser, 12.6-14.6 wt % of metallic combustible, 0.7-0.9 wt % of potassium stearate, 0.1-0.14 wt % of nitroester sensitiser thickener, 0.34-0.38 wt % of industrial oil, 0.1-0.14 wt % of soda ash, crystalline and pelletised ammonium nitrate making the rest. Nitroester sensitiser represents nitroglycerine or the mix of 80-90 wt % of nitroglycerine and 10-20 wt % of Ethylene Glycol Dinitrate while nitro cotton is used and sensitiser thickener.EFFECT: lower costs, higher efficiency and safety, zero-oxygen balance.1 tbl |
