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公开(公告)号：EP3156509B1
公开(公告)日：2019-08-28
申请号：EP15821709.1
申请日：2015-06-30
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
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2.发明公开
公开(公告)号：EP3173496A1
公开(公告)日：2017-05-31
申请号：EP15827988.5
申请日：2015-06-30
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
摘要： Provided is a method for producing pellets by which, when nickel oxide ore is being pelletized and smelted to produce ferronickel, which is an iron-nickel alloy, it is possible to allow the smelting reaction to proceed effectively and to prevent the ferronickel obtained after the smelting reaction from becoming small in size. A method for producing pellets according to the present invention is for producing pellets which are used in producing iron-nickel alloy and which are produced by mixing raw materials including nickel oxide ore and agglomerating the resulting mixture, wherein the method comprises: a mixing step S11 for mixing at least nickel oxide ore, a carbonaceous reducing agent, and iron oxide to generate a mixture; and a pellet formation step S12 for agglomerating the resulting mixture and forming pellets. In the mixing step S11, the mixture is generated such that the total weight of nickel and iron accounts for 30 wt% or more of the total weight of the pellets formed.
摘要翻译： 本发明提供一种生产由，当氧化镍矿石被造粒并熔炼以产生镍铁粒料，所有这一切是在铁 - 镍合金的方法，可以以允许熔炼反应有效地进行，并防止之后所获得的镍铁 变小的尺寸熔炼反应。 一种用于生产雅丁粒料在本发明的方法是用于生产在生产铁 - 镍合金使用并且通过混合包含氧化镍矿原料和凝聚所得到的混合物中制得的颗粒，worin该方法包括：混合步骤S11 用于混合至少氧化镍矿石，碳质还原剂和氧化铁以产生混合物; 和粒料形成步骤S12为附聚所得到的混合物并形成粒料。 在混合步骤S11，将混合物生成检查那样的镍和铁的帐户的总重量为形成的颗粒的总重量的30重量％或更多。
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公开(公告)号：EP3222737B1
公开(公告)日：2019-11-27
申请号：EP15872381.7
申请日：2015-09-15
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
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公开(公告)号：EP3222737A1
公开(公告)日：2017-09-27
申请号：EP15872381.7
申请日：2015-09-15
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
摘要： Provided is a smelting method capable of effectively promoting a reduction reaction on pellets formed using nickel oxide ore as starting material to obtain a ferronickel alloy with a high nickel grade of at least 4%. The present invention is a method for smelting nickel oxide ore wherein ferronickel alloy with a nickel grade of at least 4% is obtained by reduction-heating of pellets formed from nickel oxide ore, the method comprising a pellet-producing step S1 for producing pellets from nickel oxide ore, and a reducing step S2 for reduction-heating of the obtained pellets in a smelting furnace. In the pellet-producing step S1, the pellets are produced by mixing nickel oxide ore with a specified amount of a carbonaceous reducing agent as starting materials. In the reducing step S2, the produced pellets are charged in a smelting furnace in which a carbonaceous reducing agent (furnace bottom carbonaceous reducing agent) has been spread over the entire furnace bottom and reduction-heating is performed.
摘要翻译： 本发明提供一种能够有效促进使用氧化镍矿作为原料而形成的粒料的还原反应以获得具有至少4％的高镍品位的镍铁合金的熔炼方法。 本发明是一种用于冶炼氧化镍矿石的方法，其中通过还原加热由氧化镍矿石形成的粒料而获得镍级别为至少4％的镍铁合金，所述方法包括粒料制备步骤S1，用于从 氧化镍矿石和还原步骤S2，用于在熔炼炉中对所得颗粒进行还原加热。 在颗粒生产步骤S1中，通过将氧化镍矿石与指定量的碳质还原剂作为起始材料混合来生产颗粒。 在还原工序S2中，将制造出的颗粒装入在炉底整体上铺设了碳质还原剂（炉底碳质还原剂）并进行还原加热的熔炼炉中。
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公开(公告)号：EP3165619A1
公开(公告)日：2017-05-10
申请号：EP15828220.2
申请日：2015-06-30
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
CPC分类号： C22B23/021 , C22B1/00 , C22B1/16 , C22B1/2406 , C22B1/2413 , C22B1/245 , C22B5/10 , C22B23/005 , C22B23/02 , C22C33/04
摘要： Provided is a method for smelting nickel oxide ore by which the occurrence of cracking due to heat shock can be suppressed when nickel oxide ore is pelletized and charged into a smelting step (reduction step). A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore, the method being characterized by comprising a pellet production step S1 for producing pellets from nickel oxide ore, and a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace, the reduction step S2 comprising preheating the pellets obtained in the pellet production step S1 to a temperature of 350 to 600°C in the reduction furnace and thereafter charging the pellets into the reduction furnace and raising the temperature of the reduction furnace to the reduction temperature.
摘要翻译： 本发明提供一种镍氧化物矿石的冶炼方法，通过将氧化镍矿粒子化并投入到熔炼工序（还原工序）中，可抑制因热冲击而产生裂纹。 根据本发明的用于熔炼氧化镍矿石的方法使用氧化镍矿石的颗粒，所述方法的特征在于包括用于从氧化镍矿石生产颗粒的颗粒生产步骤S1和用于将所得颗粒在 还原炉中的预定还原温度，还原步骤S2包括在还原炉中预热在粒料生产步骤S1中获得的粒料至350-600℃的温度，然后将粒料装入还原炉中并升高温度 还原炉到还原温度。
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公开(公告)号：EP3162906B1
公开(公告)日：2018-12-05
申请号：EP15824974.8
申请日：2015-06-30
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
CPC分类号： C22B23/021 , C22B1/2406 , C22B5/02 , C22B5/04 , C22B5/10 , C22B23/005 , C22B23/02 , C22B23/023
摘要： Provided is a nickel oxide ore smelting method for forming pellets from a nickel oxide ore and performing smelting by reducing and heating the pellets in a smelting furnace, wherein it is possible to make the smelting reaction in the reduction step progress effectively while maintaining the strength of the pellets. This method for smelting a nickel oxide ore comprises: a pellet production step S1 for producing pellets from a nickel oxide ore; and a reduction step S2 for reducing and heating the obtained pellets in a smelting furnace at a predetermined reduction temperature. In the pellet production step S1, a mixture is formed by mixing materials including said nickel oxide ore without mixing a carbonaceous reducing agent, and the pellets are formed by agglomerating said mixture. In the reduction step S2, in charging the obtained pellets into the smelting furnace, a carbonaceous reducing agent is spread in advance over the furnace floor of the smelting furnace and the pellets are placed on the carbonaceous reducing agent, and the pellets are reduced and heated in a state where the pellets are covered by the carbonaceous reducing agent.
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公开(公告)号：EP3162904B1
公开(公告)日：2019-10-02
申请号：EP15824513.4
申请日：2015-06-30
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
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公开(公告)号：EP3252178B1
公开(公告)日：2019-08-07
申请号：EP15883358.2
申请日：2015-12-01
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
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公开(公告)号：EP3252178A1
公开(公告)日：2017-12-06
申请号：EP15883358.2
申请日：2015-12-01
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
CPC分类号： C22B23/023 , C21B13/10 , C22B1/16 , C22B5/10 , C22B23/02
摘要： Provided is a smelting method whereby a reaction for reducing pellets, said pellet being formed by using a saprolite ore as a starting material, can be effectively conducted and thus an iron/nickel alloy having a nickel grade of, for example, 16% or greater that satisfies Japanese Industrial Standards for ferronickel can be obtained. The method according to the present invention for smelting a saprolite ore, whereby an iron/nickel alloy having a nickel grade of 16% or greater can be obtained by heating and reducing pellets formed from the saprolite ore, comprises: a pellet production step (S1) for producing the pellets from the saprolite ore; and a reduction step (S2) for heating and reducing the obtained pellets in a smelting furnace. In the pellet production step (S1), at least the saprolite ore and a preset amount of a carbonaceous reducing agent are mixed together to produce the pellets. In the reduction step (S2), a hearth carbonaceous reducing agent is preliminarily spread on the hearth of the smelting furnace and the pellets produced above are placed on the hearth carbonaceous reducing agent and then subjected to a heat reduction treatment.
摘要翻译： 本发明提供一种熔炼方法，其中通过使用腐泥土矿石作为原材料形成的所述颗粒的还原反应可以有效地进行，并且因此具有例如16％或更高的镍品位的铁/镍合金 可以获得满足日本工业标准的镍铁。 根据本发明的用于熔化腐泥土矿石的方法，由此通过加热和还原由腐泥土矿石形成的球粒可以获得具有16％或更高镍品位的铁/镍合金，该方法包括：球粒生产步骤（S1 ）用于从腐泥土矿石生产颗粒; 和在熔炼炉中加热和还原得到的颗粒的还原步骤（S2）。 在颗粒生产步骤（S1）中，至少将腐泥土矿石和预定量的碳质还原剂混合在一起以生产颗粒。 在还原步骤（S2）中，将炉底碳还原剂预先涂布在熔炼炉的炉床上，将上述制得的颗粒置于炉底碳还原剂上，然后进行加热还原处理。
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公开(公告)号：EP3187602A1
公开(公告)日：2017-07-05
申请号：EP15826891.2
申请日：2015-07-10
发明人： TAKAHASHI, Junichi , INOUE, Taku , OKADA, Shuuji
CPC分类号： C22B23/021 , C22B1/2406 , C22B1/2413 , C22B1/245 , C22B5/10 , C22B23/023
摘要： Provided is a method for smelting nickel oxide ore by which, even if the size of lumps is small in a mixture of metal and slag obtained by reducing and heating pellets of nickel oxide ore, it is still possible to effectively separate the metal and slag and easily recover only the metal at a high recovery rate. A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore and is characterized by comprising: a pellet production step S1 for producing pellets from nickel oxide ore; a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace to obtain a mixture of iron-nickel alloy and slag; and a separation step S3 for separating out and recovering the iron-nickel alloy form the resulting mixture, the separation step S3 comprising the creation of pulverized matter by pulverizing the mixture so that at least the slag becomes smaller than 2 mm, and sorting the resulting pulverized matter with a magnetic force of 300 to 600 gauss.
摘要翻译： 本发明提供一种氧化镍矿石的冶炼方法，即使在通过还原和加热氧化镍矿石的粒料而得到的金属和矿渣的混合物中块体的尺寸较小，仍然可以有效地分离金属和矿渣， 容易以高回收率回收金属。 根据本发明的用于熔炼氧化镍矿石的方法使用氧化镍矿石的粒料，并且其特征在于包括：用于由氧化镍矿石生产粒料的粒料生产步骤S1; 还原步骤S2，用于在还原炉中以预定的还原温度加热所得的粒料以获得铁镍合金和炉渣的混合物; 以及分离步骤S3，用于从所得到的混合物中分离并回收铁镍合金;分离步骤S3，包括通过粉碎混合物使得至少炉渣变得小于2mm而产生粉碎物质， 用300〜600高斯的磁力粉碎物质。
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