公开(公告)号：US4662937A

公开(公告)日：1987-05-05

申请号：US737406

申请日：1985-05-24

申请人： Hiroyuki Katayama ,  Hidetake Ishikawa ,  Masatoshi Kuwabara ,  Hiroyuki Kajioka ,  Masaki Fujita ,  Kenji Shibata ,  Yoshiaki Tamura ,  Takashi Shimanuki

发明人： Hiroyuki Katayama ,  Hidetake Ishikawa ,  Masatoshi Kuwabara ,  Hiroyuki Kajioka ,  Masaki Fujita ,  Kenji Shibata ,  Yoshiaki Tamura ,  Takashi Shimanuki

IPC分类号： C21C5/35 ,  C22C33/00 ,  C22B47/00

CPC分类号： C22C33/003 ,  C21C5/35

摘要： There is provided a process for producing a high-manganese iron alloy from a manganese ore and/or a pre-reduced product thereof in a top and bottom blown converter type reaction vessel holding molten iron or a molten manganese iron alloy, together with a molten slag, said molten iron or alloy and said molten slag being the products of a separate smelting furnace, gas being blown into said vessel through a bottom blowing nozzle, said process comprising charging said vessel with a supply of raw materials including at least one source of manganese and iron selected from a manganese ore containing manganese oxide and iron oxide and a pre-reduced product thereof, a solid carbonaceous substance and a slag forming agent, while simultaneously blowing gas selected from oxygen and a gas containing oxygen into said vessel through a top blowing lance to burn said carbonaceous substance so as to heat, melt and reduce said raw materials to form a melt containing manganese oxide and iron oxide; supplying an additional carbonaceous substance into said melt to reduce said manganese oxide and said iron oxide to form a molten high-manganese iron alloy and a molten slag, discontinuing said blowing of gas through said top blowing lance, and removing said molten high-manganese iron alloy and said molten slag from said vessel, said molten alloy being used for casting.

摘要翻译： 本发明提供一种在含有铁水或熔融锰铁合金的顶部和底部转化型反应容器中从锰矿石和/或其预还原产物生产高锰铁合金的方法，以及熔融 熔渣，所述熔融铁或合金，所述熔融炉渣是单独熔炼炉的产物，气体通过底吹喷嘴吹入所述容器中，所述方法包括向原料供应原料，该原料包括至少一种 选自含有锰氧化物和氧化铁的锰矿及其预还原产物，固体碳质物质和成渣剂的锰和铁，同时通过顶部将从氧气和含氧气体中选出的气体吹入所述容器中 吹枪吹烧所述碳质物质，以加热，熔化和还原所述原料以形成含有氧化锰和氧化铁的熔体; 向所述熔体中提供另外的碳质物质以减少所述氧化锰和所述氧化铁以形成熔融的高锰铁合金和熔渣，停止通过所述顶吹喷枪吹入气体，并且除去所述熔融的高锰铁 合金和来自所述容器的所述熔渣，所述熔融合金用于铸造。

公开(公告)号：US3999978A

公开(公告)日：1976-12-28

申请号：US617441

申请日：1975-09-29

申请人： Mitsuo Furuya ,  Shigehiro Kimura ,  Hiroyuki Kajioka ,  Hiroyuki Katayama ,  Kiyomi Shio ,  Arata Tanaka

发明人： Mitsuo Furuya ,  Shigehiro Kimura ,  Hiroyuki Kajioka ,  Hiroyuki Katayama ,  Kiyomi Shio ,  Arata Tanaka

IPC分类号： C21C7/076 ,  C21C7/04

CPC分类号： C21C7/076 ,  Y02P10/242

摘要： A quicklime is treated by CO.sub.2 gas so as to form a CaCO.sub.3 film on the surface of the particle thereof. It serves to prevent moisture absorption so that a steel making process, especially for the production of low hydrogen steel, can be done very effectively with low cost by the use of this CO.sub.2 -treated lime.

摘要翻译： 生石灰用二氧化碳气体处理，以在其颗粒表面上形成CaCO 3膜。 为了防止吸湿，可以通过使用这种二氧化碳处理的石灰，以低成本，非常有效地进行特别是生产低氢钢的炼钢工艺。

公开(公告)号：US4198229A

公开(公告)日：1980-04-15

申请号：US855265

申请日：1977-11-28

申请人： Hiroyuki Katayama ,  Makoto Inatomi ,  Hiroyuki Kajioka ,  Yasushi Nakamura ,  Michihisa Ito ,  Kazuumi Harashima ,  Takamasa Ohno

发明人： Hiroyuki Katayama ,  Makoto Inatomi ,  Hiroyuki Kajioka ,  Yasushi Nakamura ,  Michihisa Ito ,  Kazuumi Harashima ,  Takamasa Ohno

IPC分类号： C21C7/064 ,  C22B9/10 ,  C21C7/02

CPC分类号： C21C7/064 ,  C22B9/10

摘要： A carbon-unsaturated molten metal or molten alloy containing elements more oxidizable than iron such as chromium and silicon is dephosphorized by addition of a flux composition comprising calcium carbide and a halide of alkali earth metal such as calcium fluoride in a non-oxidizing atmosphere, and thereafter the slag as a by-product is stabilized against formation of undesirable gases. This method when employed in refining ferrochromium or crude stainless steel makes feasible dephosphorization, and it is particularly suited for economical production of low phosphorus stainless steel.

摘要翻译： 通过在非氧化性气氛中加入包含碳化钙和碱土金属卤化物如氟化钙的助熔剂组合物，含有比铁，硅和硅更可氧化的元素的碳 - 不饱和熔融金属或熔融合金脱磷， 此后，作为副产物的炉渣被稳定以防止不期望的气体的形成。 该方法用于精炼铬铁或粗不锈钢时，可以实现脱磷，特别适用于经济生产低磷不锈钢。

公开(公告)号：US4887662A

公开(公告)日：1989-12-19

申请号：US247691

申请日：1988-09-22

申请人： Shigenori Tanaka ,  Yasuo Itoh ,  Michiya Hayashida ,  Kenichi Hara ,  Keiichi Yamamoto ,  Hikotaro Itani ,  Atsumu Yamane ,  Akio Kasama ,  Isao Suichi ,  Hiroyuki Kajioka ,  Kunimasa Sasaki

发明人： Shigenori Tanaka ,  Yasuo Itoh ,  Michiya Hayashida ,  Kenichi Hara ,  Keiichi Yamamoto ,  Hikotaro Itani ,  Atsumu Yamane ,  Akio Kasama ,  Isao Suichi ,  Hiroyuki Kajioka ,  Kunimasa Sasaki

IPC分类号： B21B27/00 ,  B22D11/06

CPC分类号： B21B27/005 ,  B22D11/0651

摘要： A cooling drum for continuous-casting machines, for manufacturing thin metallic strips, and having a surface composing part of a casting mold wall in contact with molten metal, wherein the surface has numerous dimples disposed uniformly thereon and not in contact with each other, and each of the dimples has an opening portion in the form of a circle or an oval with a diameter of from 0.1 to 1.2 mm and a depth of from 5 to 100 .mu.m.

公开(公告)号：US5052467A

公开(公告)日：1991-10-01

申请号：US560361

申请日：1990-07-31

申请人： Shigenori Tanaka ,  Takashi Furuya ,  Hiroyuki Kajioka ,  Shigeru Ogawa ,  Kunimasa Sasaki ,  Atsumu Yamane

发明人： Shigenori Tanaka ,  Takashi Furuya ,  Hiroyuki Kajioka ,  Shigeru Ogawa ,  Kunimasa Sasaki ,  Atsumu Yamane

IPC分类号： B22D11/06

CPC分类号： B22D11/0622

摘要： A control device for a twin-roll continuous caster, comprising a plurality of maps, each of which teaches a relationship between a thickness of a cast strip and a roll separating force under a fixed casting speed, and teaches stable casting conditions under which bulging and surface cracks do not occur. The device detects a cast thickness and a height of the molten pool and selects an appropriate map from among the plurality of maps, by the detected height, and controls the casting conditions such that a target thickness of the cast strip is obtained under stable casting conditions by using the selected map.