公开(公告)号：US4129437A

公开(公告)日：1978-12-12

申请号：US690289

申请日：1976-05-26

申请人： Kazumasa Taguchi ,  Tsutomu Nishida ,  Masaharu Kitajima ,  Kan Aketa ,  Isao Fujita ,  Mamoru Onoda ,  Nobuyuki Imanishi ,  Ryo Watanabe

发明人： Kazumasa Taguchi ,  Tsutomu Nishida ,  Masaharu Kitajima ,  Kan Aketa ,  Isao Fujita ,  Mamoru Onoda ,  Nobuyuki Imanishi ,  Ryo Watanabe

IPC分类号： C22B1/24 ,  C21B1/10

CPC分类号： C22B1/2406

摘要： In the present invention, after a powdered iron ore has been subjected to granulation and firing into spherical pellets, a further crushing is applied while adjustment of the particle size of the crushed pellets is made so that the outer surface of the pellets is composed of spherically formed surfaces and crushed surfaces. By doing so, improvements are made in the angle of repose and in the reducing characteristic of iron ore pellets, and eventually an efficient and highly economical blast furnace operation is attained.

摘要翻译： 在本发明中，在粉状铁矿石经过造粒和焙烧成球形颗粒之后，进行进一步的粉碎，同时调整压碎颗粒的粒径，使得颗粒的外表面由球形构成 形成表面和破碎表面。 通过这样做，可以改善铁矿石颗粒的休止角和还原特性，最终实现高效高效的高炉操作。