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1. 发明专利

JP2011036827A Method for treating substance containing chromium oxide 有权
标题翻译：用于处理含有氧化铬的物质的方法
公开(公告)号：JP2011036827A
公开(公告)日：2011-02-24
申请号：JP2009188864
申请日：2009-08-18
申请人： Jfe Mineral Co Ltd , Jfe Steel Corp , Jfeスチール株式会社 , Jfeミネラル株式会社
发明人： OGAWA HISASHI , TOFUSA HIROYUKI , TAKAHIRA TAKUYA
IPC分类号： B09B3/00 , A62D3/37 , A62D101/43 , C02F11/00
摘要： PROBLEM TO BE SOLVED: To provide a method for treating substance containing chromium oxide, a method capable of preventing elution of Cr
+6 from the substance containing chromium oxide industrially, easily and also inexpensively.
SOLUTION: In treating the substance containing chromium oxide, an elution quantity is preliminarily measured of Cr
+6 from the substance containing chromium oxide. If the elution quantity of Cr
+6 is a prescribed value or above, the substance containing chromium oxide is made a mixture with a substance that contains sulfur and/or sulfur having oxidation number +5 or less, and a steam aging treatment for blowing in water vapor is performed thereon. Meantime, if the elution quantity of Cr
+6 is less than the prescribed value, the substance containing chromium oxide is subjected to an immersion aging treatment in which the substance containing chromium oxide is immersed in a liquid containing sulfur and/or sulfur having oxidation number +5 or less. As a substance containing sulfur and/or sulfur having oxidation number +5, unaged air-cooled blast furnace slag is desirable. In the immersion aging treatment, it is desirable that the water vapor drain of the steam aging treatment is used as the liquid for the immersion.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种处理含有氧化铬的物质的方法，可以容易且廉价地从含有氧化铬的物质中预防Cr +6 的洗脱的方法。解决方案：在处理含有氧化铬的物质时，从含有氧化铬的物质中初步测量Cr +6 的洗脱量。如果Cr +6 的洗脱量为规定值以上，则含有氧化铬的物质与含有氧化值为+5以下的硫和/或硫的物质形成混合物，在其上进行用于吹入水蒸气的蒸汽老化处理。同时，如果Cr +6 的洗脱量小于规定值，则将含有氧化铬的物质进行浸渍时效处理，将含有氧化铬的物质浸渍在含硫的液体中和/或具有+5以下氧化值的硫。作为含有氧化值为+ 5的硫和/或硫的物质，期望未老化的风冷高炉矿渣。在浸渍时效处理中，优选将蒸汽时效处理的水蒸气排出用作浸渍液。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2005272275A Method for reforming chrome ore melting reduction furnace slag 有权
标题翻译：用于改造铬矿粉末还原炉渣的方法
公开(公告)号：JP2005272275A
公开(公告)日：2005-10-06
申请号：JP2004091965
申请日：2004-03-26
申请人： Jfe Mineral Co Ltd , Jfe Steel Kk , Jfeスチール株式会社 , Jfeミネラル株式会社
发明人： TOUBOU HIROYUKI , OGAWA HISASHI , TAKAHIRA TAKUYA
IPC分类号： C04B5/06 , C21C7/00 , F27D15/00
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a method for reforming chrome ore melting reduction furnace slag capable of drastically reducing the load of crushing and eliminating the problem of boron elution from the Cr ore melting reduction furnace slag by recycling the ladle slag containing boron produced during melting of molten steel in a converter etc., as a boron source and solidifying the Cr ore melting reduction furnace slag in such a manner that the state after cooling is nearly approximate to the state of the grain size distribution of bottoming. SOLUTION: The method is an improvement of technology to perform melting reduction of the chrome ore with a carbonaceous material by using an iron bath furnace and to reform the slag produced in melting the chromium-containing ore. The method comprises adjusting the slag composition after the end of the melting reduction with a slag making material so as to attain CaO/SiO 2 =2.0 to 3.0, MgO/CaO=0.42 to 0.60 during the melting reduction, and recycling and adding the ladle slag containing the boron oxide separately generated in melting of the molten steel into the slag in the molten state after the end period of the melting reduction in such a manner that the boron concentration thereof attains 0.01 to 0.05 mass%. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：提供一种重铬酸盐熔融还原炉渣的方法，其能够显着降低破碎负荷，并通过再循环含有硼的钢包渣除去Cr矿石熔融还原炉渣的硼溶出问题在转炉等熔融时产生的硼源，并使Cr矿石熔融还原炉渣固化，使得冷却后的状态接近于底部的晶粒度分布状态。解决方案：该方法是通过使用铁浴炉进行利用碳质材料进行铬矿的熔融还原的技术的改进，并且改性在熔化含铬矿石时产生的炉渣。该方法包括在熔融还原结束后利用造渣材料调节炉渣组成，以便在熔融还原期间获得CaO / SiO 2 SB2 = 2.0-3.0，MgO / CaO = 0.42-0.60 ，并且在熔融还原结束后，以硼浓度达到0.01〜0.05质量％的方式，将熔融状态下分解产生的含有熔融钢液的氧化硼的钢包渣再循环添加到熔融状态的炉渣中，。版权所有（C）2006，JPO＆NCIPI

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