公开(公告)号：US4661151A

公开(公告)日：1987-04-28

申请号：US835554

申请日：1986-03-03

申请人： Koichi Endoh ,  Toshiyuki Kaneko ,  Hideo Yaoi ,  Seiji Aso ,  Yasuo Obana ,  Hideyuki Takahama

发明人： Koichi Endoh ,  Toshiyuki Kaneko ,  Hideo Yaoi ,  Seiji Aso ,  Yasuo Obana ,  Hideyuki Takahama

IPC分类号： C21C7/064 ,  C21C7/02

CPC分类号： C21C7/0645

摘要： A treating agent of molten steel according to the present invention is used for desulfurization molten steel for desulfurizing it in a reaction vessel which is lined with a basic refractory containing MgO, and consists of CaO, CaF.sub.2 and MgO and unavoidable impurities contains from 10 to 60% by weight of MgO, and has a weight ratio of {(% CaF.sub.2)/((% CaO)+(% CaF.sub.2))}.times.100(%) of from 20 to 80%.Said agent is injected with the aid of inert carrier gas into the molten steel and floats toward a portion of the molten steel bath essentially free of slag. Another treating agent essentially consisting of CaO and CaF.sub.2 may be also injected prior and/or subsequent to injection of said agent, so as to decrease inclusions. The inert gas may also be injected after injection of said agent(s).

摘要翻译： 根据本发明的钢水处理剂用于脱硫用的脱硫钢水，该反应容器内衬有含有MgO的碱性耐火材料，由CaO，CaF 2和MgO组成，不可避免的杂质含有10〜60 重量％的MgO，重量比为{（CaF2）/（（CaO）+（％CaF2））}×100（％）为20〜80％。 所述试剂借助于惰性载气注入钢水中，并向基本上不含渣的钢水浴的一部分漂浮。 基本上由CaO和CaF 2组成的另一种处理剂也可在注入所述试剂之前和/或之后注入，以便减少夹杂物。 惰性气体也可以在注入所述试剂之后注入。

公开(公告)号：US5204298A

公开(公告)日：1993-04-20

申请号：US795950

申请日：1991-11-21

申请人： Hideo Yaoi ,  Toshihiro Isobe ,  Yukihiro Suekawa

发明人： Hideo Yaoi ,  Toshihiro Isobe ,  Yukihiro Suekawa

IPC分类号： B22D41/02 ,  C04B35/043 ,  C04B35/66 ,  F27D1/00

CPC分类号： F27D1/0006 ,  B22D41/02 ,  C04B35/0435 ,  C04B35/66 ,  C04B2111/00887 ,  C04B2111/10 ,  C04B2235/3206 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/72 ,  C04B2235/9676

摘要： Basic monolithic refractories of which the chemical composition consists essentially of, in oxide equivalence, 65%-96% by weight of MgO, 2.6%-20% by weight of ZrO.sub.2, 1.3-10% by weight of SiO.sub.2, 2% or less by weight of CaO, 0.5% or less by weight of Fe.sub.2 O.sub.3 and 1% or less by weight of Al.sub.2 O.sub.3, and with a mineral composition containing periclase as the main component and cubic zirconia and forsterite as sub-components, and with apparent porosity of 7% or less and bulk density of 3.2 g/cm.sup.3 or more.Basic monolithic refractories under this invention possess excellent slaking resistance, slag erosion resistance, slag penetration resistance and spalling resistance. They exhibit an excellent service life, especially as lining material for steel-making furnaces.

摘要翻译： 基本的整体耐火材料，其化学组成基本上由以氧化物当量计为65重量％-96重量％的MgO，2.6重量％-20重量％的ZrO 2，1.3-10重量％的SiO 2，2重量％以下由 CaO，0.5重量％以下，Fe 2 O 3：1重量％以下，Al 2 O 3：1重量％以下的矿物组合物和作为主要成分的立方氧化锆和镁橄榄石的矿物组合物，表观孔隙率为7％ 或更小，堆积密度为3.2g / cm 3以上。 本发明的基本整体耐火材料具有优异的耐干燥性，耐渣蚀性，耐熔渣渗透性和抗剥落性。 它们表现出优异的使用寿命，特别是作为炼钢炉的衬里材料。