公开(公告)号：US06521040B2

公开(公告)日：2003-02-18

申请号：US09984038

申请日：2001-10-26

申请人： Hisahiro Matsunaga ,  Masato Kumagai ,  Hiroyuki Tobo ,  Yasuo Kishimoto ,  Toshikazu Sakuraya

发明人： Hisahiro Matsunaga ,  Masato Kumagai ,  Hiroyuki Tobo ,  Yasuo Kishimoto ,  Toshikazu Sakuraya

IPC分类号： C04B1814

CPC分类号： C22B7/006 ,  C22B5/08 ,  C22B7/04 ,  C22B34/32 ,  Y02P10/234

摘要： A method of rapidly reducing chromium oxide-containing slag and the like in large quantities, in a simplified manner and without requiring high temperatures. Chromium oxides are reduced with at least one of elementary sulfur and compounds of sulfur having a valence less than 6. For an aqueous solution of the sulfur component, desirably, its sulfur content is more than 0.03% by weight. As the sulfur source, preferred is blast furnace slag (e.g., non-aged, gradually-cooled blast furnace slag) that is discharged in large quantities in the iron industry. Cr6+ in chromium oxides is reduced in one of the following ways: (a) Chromium oxide-containing substances are sprayed with or immersed in blast furnace slag-released water that has been used in cooling blast furnace slag. (b) Chromium oxide-containing substances are mixed with blast furnace slag, and then kept in an air atmosphere. Optionally, the mixture is sprayed with blast furnace slag-released water. (c) Chromium oxide-containing substances are mixed with blast furnace slag, and then steamed. (d) Prior to the reduction treatment, chromium oxide-containing substances are preferably steamed. 100 parts by weight of reduced chromium oxide-containing compounds are mixed with from 0.1 to 90 parts by weight of sulfur-containing slag, and used in various civil engineering works.

公开(公告)号：US06336967B1

公开(公告)日：2002-01-08

申请号：US09047411

申请日：1998-03-25

申请人： Hisahiro Matsunaga ,  Masato Kumagai ,  Hiroyuki Tobo ,  Yasuo Kishimoto ,  Toshikazu Sakuraya

发明人： Hisahiro Matsunaga ,  Masato Kumagai ,  Hiroyuki Tobo ,  Yasuo Kishimoto ,  Toshikazu Sakuraya

IPC分类号： C04B1814

CPC分类号： C22B7/006 ,  C22B5/08 ,  C22B7/04 ,  C22B34/32 ,  Y02P10/234

摘要： A method of rapidly reducing chromium oxide-containing slag and the like in large quantities, in a simplified manner and without requiring high temperatures. Chromium oxides are reduced with at least one of elementary sulfur and compounds of sulfur having a valence less than 6. For an aqueous solution of the sulfur component, desirably, its sulfur content is more than 0.03% by weight. As the sulfur source, preferred is blast furnace slag (e.g., non-aged, gradually-cooled blast furnace slag) that is discharged in large quantities in the iron industry. Cr6+ in chromium oxides is reduced in one of the following ways: (a) Chromium oxide-containing substances are sprayed with or immersed in blast furnace slag-released water that has been used in cooling blast furnace slag. (b) Chromium oxide-containing substances are mixed with blast furnace slag, and then kept in an air atmosphere. Optionally, the mixture is sprayed with blast furnace slag-released water. (c) Chromium oxide-containing substances are mixed with blast furnace slag, and then steamed. (d) Prior to the reduction treatment, chromium oxide-containing substances are preferably steamed. 100 parts by weight of reduced chromium oxide-containing compounds are mixed with from 0.1 to 90 parts by weight of sulfur-containing slag, and used in various civil engineering works.

摘要翻译： 以简化的方式大量快速还原含铬氧化物的炉渣等的方法，而不需要高温。 氧化铬与元素硫和价态小于6的硫化合物中的至少一种一起还原。对于硫成分的水溶液，理想的是其硫含量大于0.03重量％。 作为硫源，优选在铁工业中大量排放的高炉矿渣（例如，未老化，逐渐冷却的高炉渣）。 铬氧化物中的Cr6 +以下列方式之一进行还原：（a）将含氧化铬的物质喷洒或浸入已用于冷却高炉矿渣的高炉排渣水中。 （b）将含氧化铬的物质与高炉矿渣混合，然后保存在空气中。 任选地，混合物用高炉渣释放的水喷洒。 （c）将含氧化铬的物质与高炉矿渣混合，然后蒸。 （d）在还原处理之前，优选蒸去含氧化铬的物质。 将100重量份的含还原氧化铬的化合物与0.1至90重量份的含硫渣混合，并用于各种土木工程中。

公开(公告)号：US06334885B1

公开(公告)日：2002-01-01

申请号：US09417053

申请日：1999-10-13

申请人： Yasumasa Fukushima ,  Hisahiro Matsunaga ,  Hiroyuki Tobo ,  Makiko Nakagawa ,  Masato Takagi ,  Masato Kumagai

发明人： Yasumasa Fukushima ,  Hisahiro Matsunaga ,  Hiroyuki Tobo ,  Makiko Nakagawa ,  Masato Takagi ,  Masato Kumagai

IPC分类号： C22B704

CPC分类号： C04B18/142 ,  C04B7/153 ,  C04B28/18 ,  C21B3/06 ,  C22B7/04 ,  Y02P10/212 ,  Y02P40/143 ,  Y02W30/543 ,  Y02W30/92 ,  Y02W30/94 ,  Y10S106/01 ,  C04B18/08 ,  C04B22/062 ,  C04B40/024 ,  C04B18/141

摘要： A method of solidifying a steel-making slag is performed by subjecting a mixture of a steel-making slag containing at least about 50% by weight of a powdery steel-making slag having a particle size not greater than about 5 mm and a substance containing at least about 30% by weight of SiO2 (e.g., a fly ash and/or the fine powder of a granulated blast furnace slag) to a hydration reaction. The resulting solidified material contains at least about 20% of a tobermorite phase, has high strength and is suitable as an inorganic material useful as a roadbed material, building and civil engineering materials, etc.

摘要翻译： 一种固化炼钢渣的方法是通过对含有至少约50重量％的粒径不大于约5mm的粉末冶炼炉渣的炼钢渣和含有 至少约30重量％的SiO 2（例如，粉煤灰和/或造粒高炉炉渣的细粉）达到水合反应。 所得到的固化材料含有至少约20％的硅橡胶相，具有高强度，适合作为路基材料，建筑和土木工程材料等的无机材料。