公开(公告)号：US4274864A

公开(公告)日：1981-06-23

申请号：US010146

申请日：1979-02-07

申请人： Dieter Bernhardt ,  Norbert Dautzenberg ,  Richard Lummer ,  Georg Huber

发明人： Dieter Bernhardt ,  Norbert Dautzenberg ,  Richard Lummer ,  Georg Huber

IPC分类号： B22F1/00 ,  B22F9/00 ,  B22F9/08 ,  B22F1/04

CPC分类号： B22F9/082

摘要： Iron powder of high compressibility and low bulk density is made by atomizing a stream of molten steel by means of a conical jet of water at a rate in excess of 10 cubic meters water per metric ton of steel, the half cone angle is between 40.degree. and 60.degree., preferably 45.degree.; and air suction is provided in a region upstream from the cone, adjacent to the stream at a pressure of 0.02 to 0.20 bars below ambient, by means of a length adjustable tube extending down from the nozzle chamber. The powder is reduced at 1,000.degree. C. to 1,200.degree. C., and the resulting cake is broken up to obtain a powder having a particle size distribution with a higher content of larger particles than the powder immediately resulting from the atomization.

摘要翻译： 通过以每公吨钢量超过10立方米水的速度的锥形喷射水雾化钢水流而制成高压缩性和低堆积密度的铁粉，半锥角在40° 60°，优选45°; 并且借助于从喷嘴室向下延伸的长度可调节管，在锥体的上游区域中与气流相邻地在0.02至0.20巴的压力下设置空气抽吸。 将粉末在1000℃下还原至1200℃，将得到的饼破碎，得到粒径分布比粉末立即产生的粒子大的粒子的粉末。