对于生产轻金属粉,特别是铝粉,实际上采用两种喷射法。第一种是旧式方法,使熔融铝和空气一起喷射,铝粉在很大的粉尘室中被分离出来。这种方法具有如下缺点:即粉末和空气的混合体分离时能形成爆炸性的混合物。该喷射装置所发生的爆炸性事故几乎每年不断,因此为消除事故需要把此喷射装备装设在宽大的厂房内。尽管如此工人在操作此设备时不可避免遭到人身伤亡。此外所得到粉末一般不合乎质量要求,即粉末粒度分布极广,初 For the production of light metal powders, especially aluminum powder, two injection methods are actually used. The first is the old-fashioned method of spraying molten aluminum with air and the aluminum powder is separated in a large dust chamber. This method has the disadvantage that an explosive mixture can form when the mixture of powder and air is separated. The explosive device accident occurred in the continuous almost every year, so to eliminate the need for the injection equipment installed in the large plant. However, workers are inevitably killed or injured while operating the equipment. In addition, the resulting powder generally does not meet the quality requirements, that is, a very wide distribution of powder particle size, early