| 摘要 |
<p>The invention relates to emulsified aqueous explosive b asting compositions having a discontinuous aqueous phase, a continuous oil or water-immiscible liquid organic phase, and an emulsifier. The emulsifier of the invention comprises a fatty acid amine or ammonium salt having a chain length ranging from 14 to 22 carbon atoms. The emulsifier of the invention not only provides effective emulsification but also provides crystal habit modification, which enhances stability and sensitivity and which is a function not provided heretofore by known emulsifiers. The invention also provides a method in which the emulsifier is predissolved in the liquid organic phase to enhance the ease of emulsification. The emulsified blasting compositions can be used as commercial blasting agents in mining and other activities.</p><p>One exemplary composition according to the invention comprises from 3% to 6% fuel oil, from 8% to 12% water, both percentages being by weight based on the total composition, and an alkylammonium acetate emulsifier.</p> |
