为配合金属矿山散装多孔粒状铁油炸药机械化装药的推广应用，并实现光面爆破，金川镍钴研究设计院研制了适用于机械化装药的光面爆破专用炸药-LD型低密度散装铵油炸药，并应用于在井下，实践表明，该种炸药爆破性能良好，威力适中，适合于风动机械化装药，与铵油炸药配合使用．可大大提高爆破质量，减小爆破成本。 In line with the popularization and application of mechanized charge of porous iron granular explosive in bulk metal mines and the realization of smooth blasting, Jinchuan Research Institute of Nickel and Cobalt has developed a series of low-density bulk ammonium amines Explosives, and applied to the underground, the practice shows that the explosion of explosives good performance, moderate power, suitable for pneumatic mechanized charge, and the use of ammonium oil explosives. Can greatly improve the quality of blasting, reducing blasting costs.