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公开(公告)号：US20060096420A1
公开(公告)日：2006-05-11
申请号：US10541457
申请日：2003-12-26
IPC分类号： C21B15/00
CPC分类号： C22B5/10 , C21B13/10 , C22B1/244 , C22B34/32 , Y02P10/136
摘要： An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.6° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C.
摘要翻译： 本发明的目的是提供一种在高铬还原度下还原含铬材料的方法。 在本发明的方法中，通过在移动的炉床炉中的辐射加热来加热和还原含有氧化铬和碳质还原剂的原料的混合物。 在混合物的辐射加热开始到混合物达到1114℃之间的时间内，还原中混合物的温度升高的平均速率优选为13.6℃/秒或更高。
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公开(公告)号：US08088195B2
公开(公告)日：2012-01-03
申请号：US11936549
申请日：2007-11-07
申请人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
发明人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
CPC分类号： C21B13/0006 , C21B13/006 , C21B13/008 , C21B13/105 , C21B13/14 , C21B13/143 , C21C5/54 , C22B34/1218 , C22B34/1281 , Y02P10/136 , Y02P10/216 , Y02P10/23
摘要： The present invention provides a method for efficiently manufacturing a titanium oxide-containing slag from a material including titanium oxide and iron oxide, wherein a reduction of titanium dioxide is suppressed and the electric power consumption is minimized. The method includes the steps of: heating a raw material mixture including titanium oxide, iron oxide, and a carbonaceous reductant, or the raw material mixture further including a calcium oxide source, in a reducing furnace; reducing the iron oxide in the mixture to form reduced iron; feeding the resultant mixture to a heating melting furnace; heating the resultant mixture in the heating melting furnace to melt the reduced iron and separate the reduced iron from a titanium oxide-containing slag; and discharging and recovering the titanium oxide-containing slag out of the furnace.
摘要翻译： 本发明提供了一种从包含氧化钛和氧化铁的材料有效地制造含氧化钛的炉渣的方法，其中抑制了二氧化钛的还原并使电力消耗最小化。 该方法包括以下步骤：在还原炉中加热包括氧化钛，氧化铁和碳质还原剂的原料混合物，或进一步包含氧化钙源的原料混合物; 减少混合物中的氧化铁以形成还原铁; 将所得混合物送入加热熔化炉; 在加热熔融炉中加热所得混合物以熔化还原铁并将还原铁与含氧化钛的炉渣分离; 并将含氧化钛的炉渣从炉中排出和回收。
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公开(公告)号：US20100037728A1
公开(公告)日：2010-02-18
申请号：US12543798
申请日：2009-08-19
CPC分类号： C22B5/10 , C21B13/10 , C22B1/244 , C22B34/32 , Y02P10/136
摘要： An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.96° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C.
摘要翻译： 本发明的目的是提供一种在高铬还原度下还原含铬材料的方法。 在本发明的方法中，通过在移动的炉床炉中的辐射加热来加热和还原含有氧化铬和碳质还原剂的原料的混合物。 在从混合物的辐射加热开始到混合物达到1114℃之间的时间内，还原中混合物的温度升高的平均速率优选为13.96℃/秒或更高。
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公开(公告)号：US08262766B2
公开(公告)日：2012-09-11
申请号：US12543798
申请日：2009-08-19
IPC分类号： C21B11/00
CPC分类号： C22B5/10 , C21B13/10 , C22B1/244 , C22B34/32 , Y02P10/136
摘要： An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.96° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C.
摘要翻译： 本发明的目的是提供一种在高铬还原度下还原含铬材料的方法。 在本发明的方法中，通过在移动的炉床炉中的辐射加热来加热和还原含有氧化铬和碳质还原剂的原料的混合物。 在从混合物的辐射加热开始到混合物达到1114℃之间的时间内，还原中混合物的温度升高的平均速率优选为13.96℃/秒或更高。
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公开(公告)号：US20080069763A1
公开(公告)日：2008-03-20
申请号：US11936549
申请日：2007-11-07
申请人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
发明人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
IPC分类号： C01G23/08
CPC分类号： C21B13/0006 , C21B13/006 , C21B13/008 , C21B13/105 , C21B13/14 , C21B13/143 , C21C5/54 , C22B34/1218 , C22B34/1281 , Y02P10/136 , Y02P10/216 , Y02P10/23
摘要： The present invention provides a method for efficiently manufacturing a titanium oxide-containing slag from a material including titanium oxide and iron oxide, wherein a reduction of titanium dioxide is suppressed and the electric power consumption is minimized. The method includes the steps of: heating a raw material mixture including titanium oxide, iron oxide, and a carbonaceous reductant, or the raw material mixture further including a calcium oxide source, in a reducing furnace; reducing the iron oxide in the mixture to form reduced iron; feeding the resultant mixture to a heating melting furnace; heating the resultant mixture in the heating melting furnace to melt the reduced iron and separate the reduced iron from a titanium oxide-containing slag; and discharging and recovering the titanium oxide-containing slag out of the furnace.
摘要翻译： 本发明提供了一种从包含氧化钛和氧化铁的材料有效地制造含氧化钛的炉渣的方法，其中抑制了二氧化钛的还原并使电力消耗最小化。 该方法包括以下步骤：在还原炉中加热包括氧化钛，氧化铁和碳质还原剂的原料混合物，或进一步包含氧化钙源的原料混合物; 减少混合物中的氧化铁以形成还原铁; 将所得混合物送入加热熔化炉; 在加热熔融炉中加热所得混合物以熔化还原铁并将还原铁与含氧化钛的炉渣分离; 并将含氧化钛的炉渣从炉中排出和回收。
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6.发明申请公开(公告)号：US20070113708A1
公开(公告)日：2007-05-24
申请号：US11627165
申请日：2007-01-25
IPC分类号： C21B13/10
CPC分类号： C21B13/143 , C21B13/0046 , C21B13/006 , C21B13/105 , C21C5/5264 , Y02P10/216
摘要： The present invention provides a process that is useful in producing ferronickel having a high Ni content at low cost with high efficiency and reproducibility even if a low-grade feedstock containing nickel oxide is used. In particular, a feedstock containing nickel oxide and iron oxide is mixed with a carbonaceous reductant, the mixture is formed into agglomerates with an agglomerator, and the agglomerates are heated and reduced in a moving hearth furnace, whereby reduced agglomerates in which the Ni metallization degree is 40% or more and the Fe metallization degree is at least 15% less than the Ni metallization degree are prepared by adjusting the retention time of the agglomerates placed in the moving hearth furnace. The reduced agglomerates, in which the Ni component has been primarily reduced as compared with the Fe component, are smelted in a smelting furnace, whereby ferronickel having a high Ni content is obtained.
摘要翻译： 本发明提供了即使使用含有氧化镍的低品位原料，也可以以低成本，高效率，再现性高的Ni含量制造镍铁的方法。 特别地，将含有氧化镍和氧化铁的原料与碳质还原剂混合，将该混合物与附聚物形成凝聚体，并在移动的炉床炉中加热和还原附聚物，由此减少附着物，其中Ni金属化度 为40％以上，通过调整放置在移动的炉底炉中的凝聚体的保留时间来制备Fe金属化度比Ni金属化度小至少15％。 与Fe成分相比，Ni成分主要还原的还原附聚物在冶炼炉中熔炼，得到Ni含量高的镍铁。
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7.发明申请公开(公告)号：US20050211020A1
公开(公告)日：2005-09-29
申请号：US10508546
申请日：2003-09-19
CPC分类号： C21B13/143 , C21B13/0046 , C21B13/006 , C21B13/105 , C21C5/5264 , Y02P10/216
摘要： The present invention provides a process that is useful in producing ferronickel having a high Ni content at low cost with high efficiency and reproducibility even if a low-grade feedstock containing nickel oxide is used. In particular, a feedstock containing nickel oxide and iron oxide is mixed with a carbonaceous reductant, the mixture is formed into agglomerates with an agglomerator, and the agglomerates are heated and reduced in a moving hearth furnace, whereby reduced agglomerates in which the Ni metallization degree is 40% or more and the Fe metallization degree is at least 15% less than the Ni metallization degree are prepared by adjusting the retention time of the agglomerates placed in the moving hearth furnace. The reduced agglomerates, in which the Ni component has been primarily reduced as compared with the Fe component, are smelted in a smelting furnace, whereby ferronickel having a high Ni content is obtained.
摘要翻译： 本发明提供了即使使用含有氧化镍的低品位原料，也可以以低成本，高效率，再现性高的Ni含量制造镍铁的方法。 特别地，将含有氧化镍和氧化铁的原料与碳质还原剂混合，将该混合物与附聚物形成凝聚体，并在移动的炉床炉中加热和还原附聚物，由此减少附着物，其中Ni金属化度 为40％以上，通过调整放置在移动的炉底炉中的凝聚体的保留时间来制备Fe金属化度比Ni金属化度小至少15％。 与Fe成分相比，Ni成分主要还原的还原附聚物在冶炼炉中熔炼，得到Ni含量高的镍铁。
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公开(公告)号：US20050028643A1
公开(公告)日：2005-02-10
申请号：US10495577
申请日：2003-08-29
申请人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
发明人： Hidetoshi Tanaka , Itsuo Miyahara , Hiroshi Uemura , Takao Harada , Hiroshi Sugitatsu , Isao Kobayashi
IPC分类号： C01G23/04 , C21B5/02 , C21B11/08 , C21B13/00 , C21B13/10 , C21B13/14 , C21B15/02 , C21C5/54 , C22B7/04 , C22B34/12 , F27B9/02 , C21B3/04
CPC分类号： C21B13/0006 , C21B13/006 , C21B13/008 , C21B13/105 , C21B13/14 , C21B13/143 , C21C5/54 , C22B34/1218 , C22B34/1281 , Y02P10/136 , Y02P10/216 , Y02P10/23
摘要： The present invention provides a method for efficiently manufacturing a titanium oxide-containing slag from a material including titanium oxide and iron oxide, wherein a reduction of titanium dioxide is suppressed and the electric power consumption is minimized. The method includes the steps of: heating a raw material mixture including titanium oxide, iron oxide, and a carbonaceous reductant, or the raw material mixture further including a calcium oxide source, in a reducing furnace; reducing the iron oxide in the mixture to form reduced iron; feeding the resultant mixture to a heating melting furnace; heating the resultant mixture in the heating melting furnace to melt the reduced iron and separate the reduced iron from a titanium oxide-containing slag; and discharging and recovering the titanium oxide-containing slag out of the furnace.
摘要翻译： 本发明提供了一种从包含氧化钛和氧化铁的材料有效地制造含氧化钛的炉渣的方法，其中抑制了二氧化钛的还原并使电力消耗最小化。 该方法包括以下步骤：在还原炉中加热包括氧化钛，氧化铁和碳质还原剂的原料混合物，或进一步包含氧化钙源的原料混合物; 减少混合物中的氧化铁以形成还原铁; 将所得混合物送入加热熔化炉; 在加热熔融炉中加热所得混合物以熔化还原铁并将还原铁与含氧化钛的炉渣分离; 并将含氧化钛的炉渣从炉中排出和回收。
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公开(公告)号：US20100180723A1
公开(公告)日：2010-07-22
申请号：US12678533
申请日：2008-09-18
申请人： Hideaki Fujimoto , Tsuyoshi Mimura , Itsuo Miyahara , Takao Harada , Masataka Tateishi , Hiroshi Sugitatsu
发明人： Hideaki Fujimoto , Tsuyoshi Mimura , Itsuo Miyahara , Takao Harada , Masataka Tateishi , Hiroshi Sugitatsu
IPC分类号： C21B13/12
CPC分类号： F27B3/08 , C21B11/10 , C21B13/004 , C21B13/008 , C21C7/0025 , C21C7/0087 , C21C7/072 , C21C2007/0062 , Y02P10/136
摘要： A method for manufacturing molten iron includes a step of charging a carbonaceous material, a flux, and solid reduced iron obtained by thermally reducing carbon composite iron oxide agglomerates into an arc melting furnace and melting the solid reduced iron using arc heating in the melting furnace while an inert gas is blown into a molten iron layer contained in the melting furnace from a bottom blowing tuyere disposed on a bottom of the melting furnace to stir the molten iron layer, wherein the carbonaceous material is charged so that a carbonaceous material suspending slag layer in which the carbonaceous material is suspended is formed in an upper portion of a slag layer formed on the molten iron layer by slag produced when the solid reduced iron is melted into the molten iron and so that a carbonaceous material coating layer composed of only the carbonaceous material is further formed on the carbonaceous material suspending slag layer, and the molten iron and the slag stored in the melting furnace are tapped from a tap hole formed in a lower portion of a furnace wall of the melting furnace.
摘要翻译： 一种制造铁水的方法包括：将通过将碳复合氧化铁附聚物热还原成电弧熔化炉而获得的碳质材料，助熔剂和固体还原铁的步骤，并且在熔融炉中使用电弧加热熔化固体还原铁， 将惰性气体从设置在熔炉的底部的底吹风口吹入熔融炉内所含的铁水层中，搅拌铁水层，其中将碳质材料加入到含碳材料中， 通过在固体还原铁熔融到铁水中时产生的炉渣形成在铁水层上形成的炉渣层的上部，由此，碳质材料涂层仅由碳质材料构成 进一步形成在碳质材料悬浮渣层上，并将铁水和渣储存在炉渣中 熔融炉从形成在熔炉的炉壁的下部的抽头孔中抽出。
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公开(公告)号：US07993428B2
公开(公告)日：2011-08-09
申请号：US12678533
申请日：2008-09-18
申请人： Hideaki Fujimoto , Tsuyoshi Mimura , Itsuo Miyahara , Takao Harada , Masataka Tateishi , Hiroshi Sugitatsu
发明人： Hideaki Fujimoto , Tsuyoshi Mimura , Itsuo Miyahara , Takao Harada , Masataka Tateishi , Hiroshi Sugitatsu
CPC分类号： F27B3/08 , C21B11/10 , C21B13/004 , C21B13/008 , C21C7/0025 , C21C7/0087 , C21C7/072 , C21C2007/0062 , Y02P10/136
摘要： A method for manufacturing molten iron comprises charging a carbonaceous material, a flux, and solid reduced iron obtained by thermally reducing carbon composite iron oxide agglomerates into an arc melting furnace and melting the solid reduced iron using arc heating in the melting furnace while an inert gas is blown into a molten iron layer from a bottom blowing tuyere on a bottom of the melting furnace, wherein: a carbonaceous material suspending slag layer is formed in an upper portion of a slag layer formed on the molten iron layer when the solid reduced iron is melted into the molten iron; a carbonaceous material coating layer having the carbonaceous material is formed on the carbonaceous material suspending slag layer; and the molten iron and the slag stored in the melting furnace are tapped from a tap hole formed in a lower portion of a furnace wall of the melting furnace.
摘要翻译： 一种制造铁水的方法包括将通过将碳复合氧化铁附聚物热还原成电弧熔化炉而获得的碳质材料，助熔剂和固体还原铁，并在熔融炉中使用电弧加热熔化固体还原铁，同时将惰性气体 从熔炉的底部的底吹风口吹入铁水层，其中：当固体还原铁为铁素体时，在铁水层上形成的渣层的上部形成有碳质的悬浮渣层 熔化成铁水; 在碳质材料悬浮渣层上形成具有碳质材料的碳质材料涂层; 并且熔融炉中熔融的铁和熔渣中的炉渣从形成在熔炉的炉壁下部的抽水孔中抽出。
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