公开(公告)号：US3253067A

公开(公告)日：1966-05-24

申请号：US21875662

申请日：1962-08-22

申请人： YOSHIMORI TOMITA ,  KIKUO ARIGA

发明人： YOSHIMORI TOMITA ,  KIKUO ARIGA

IPC分类号： C04B35/18 ,  C04B35/565

CPC分类号： C04B35/565 ,  C04B35/18

公开(公告)号：US4735859A

公开(公告)日：1988-04-05

申请号：US903681

申请日：1986-09-04

申请人： Susumu Ushigome ,  Kikuo Ariga

发明人： Susumu Ushigome ,  Kikuo Ariga

IPC分类号： C04B35/043 ,  C04B35/047 ,  C04B33/32 ,  C04B35/04

CPC分类号： C04B35/0476 ,  C04B35/043 ,  C04B35/0435 ,  Y10T428/2993

摘要： A magnesia aggregate for a refractory article, which comprises: a core portion comprising magnesia; a covering layer excellent in slag penetration resistance, which comprises a refractory material excellent in slag penetration resistance and covers the surface of said core portion; and an intermediate layer excellent in slag penetration resistance, formed between said core portion and said covering layer through combination thereof. Said magnesia aggregate is manufactured by: forming, on the surface of a core portion which comprises magnesia and has a particle size of from 40 .mu.m to 10 mm, a covering layer which comprises a powdery refractory material excellent in slag penetration resistance and has a covering thickness of from 20 .mu.m to 2.0 mm, to prepare a green aggregate; and firing said green aggregate at a temperature of from 1,700.degree. to 2,200.degree. C. for a period of time of 4 to 10 hours, to form an intermediate layer excellent in slag penetration resistance between said core portion and said covering layer through combination thereof, thereby manufacturing a magnesia aggregate comprising said core portion, said covering layer and said intermediate layer.

摘要翻译： 一种用于耐火制品的氧化镁骨料，其包括：包含氧化镁的芯部分; 具有优异的耐熔渣性的覆盖层，其包括耐熔渣性优异且覆盖所述芯部表面的耐火材料; 以及通过其组合在所述芯部和所述覆盖层之间形成的耐熔渣性优异的中间层。 所述氧化镁骨料通过以下方法制造：在包含氧化镁的核心部分的表面上形成具有40μm至10mm的粒径的覆盖层，该覆盖层包括耐熔渣性优异的粉末耐火材料，并且具有 覆盖厚度为20〜2.0mm，制成绿色骨料; 并在1700〜2200℃的温度下焙烧所述生坯组合物4〜10小时，通过其组合形成所述芯部与所述覆盖层之间的耐熔渣性优异的中间层， 从而制造包括所述芯部分，所述覆盖层和所述中间层的氧化镁骨料。

公开(公告)号：US5244130A

公开(公告)日：1993-09-14

申请号：US998406

申请日：1992-12-29

申请人： Hidekichi Ozeki ,  Takafumi Aoki ,  Kikuo Ariga

发明人： Hidekichi Ozeki ,  Takafumi Aoki ,  Kikuo Ariga

IPC分类号： B22D11/10 ,  B22D41/54 ,  C04B35/48

CPC分类号： B22D41/54

摘要： A molten steel pouring nozzle having, along the axis thereof, a bore through which molten steel flows. At least part of an inner portion of the molten steel pouring nozzle, which inner portion forms the bore, is formed of a refractory consisting essentially of:______________________________________ zirconia clinker comprising calcium from 40 to 89 wt.%, zirconate where, a content of calcium oxide in the zirconia clinker being within a range of from 6 to 35 weight parts relative to 100 weight parts of the zirconia clinker; graphite from 10 to 35 wt.%, and crystal stabilized calcium silicate from 1 to 30 wt.%. comprising dicalcium silicate (2CaO.SiO.sub.2) and tricalcium silicate (3CaO.SiO.sub.2) ______________________________________

摘要翻译： 一种钢水浇注嘴，其沿其轴线具有钢水流过的孔。 钢水浇注嘴的内部至少部分形成孔，由基本上由以下组成的耐火材料形成： - 包含40至89重量％的钙的氧化锆熟料， - 锆酸盐，其中含量 在氧化锆熟料中的氧化钙相对于100重量份的氧化锆熟料在6至35重量份的范围内; 的10至35重量％的晶体稳定的硅酸钙，其含量为1至30重量％。 - 包括硅酸二钙（2CaO·SiO 2）和硅酸三钙（3CaO·SiO 2）