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JP2008056986A Method for manufacturing reduced briquette 有权
标题翻译：制造减速机的方法
公开(公告)号：JP2008056986A
公开(公告)日：2008-03-13
申请号：JP2006234816
申请日：2006-08-31
申请人： Hamada Heavy Industries Ltd , Nippon Steel & Sumikin Stainless Steel Corp , 新日鐵住金ステンレス株式会社 , 濱田重工株式会社
发明人： KAWASAWA TAKEO , MORISHIGE HIROAKI
IPC分类号： C22B1/16 , C22B1/244 , C22B7/02
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a reduced briquette, which can sufficiently secure the strength of the briquette after having baked when manufacturing the reduced briquette by using collected dust which is formed in a steel smelting process as a raw material and reducing the dust in a reductive baking furnace. SOLUTION: A raw material blend mixture is prepared by the steps of: blending 2 to 15 mass% of neutralized sludge, which is produced in a pickling waste liquid treatment process and contains a CaF 2 component, and 10 to 15 mass% of carbonaceous material with a collected dust which is produced in the steel-smelting process; adding an organic binder of 5 to 10 mass% by outer percentage to the blend; and further adding a lime source to the blend so that the basicity (CaO/SiO 2 ) in the blent raw material can be in a range of 0.3 to 1.0. The method for manufacturing the reduced briquette comprises the steps of: kneading the raw material blend mixture; molding the kneaded mixture into a briquette; and then reducing the briquette while baking the briquette in a reductive baking furnace in an atmosphere of 1,250°C or higher for 25 minutes or longer. A steel to be smelted is preferably a stainless steel. Quicklime or hydrated lime can be used as the lime source. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种制造还原型团块的方法，其可以通过使用以钢冶炼方法形成的收集的灰尘作为原料，在制造还原型团块时，能够充分确保烧结后的团块的强度还原烘烤炉中减少粉尘。解决方案：通过以下步骤制备原料混合物混合物：混合2〜15质量％的中和污泥，其在酸洗废液处理工艺中生产并含有CaF 2 SBB组分和10〜15质量％的在钢铁冶炼工序中生成的收集灰尘的碳质材料; 向混合物中以外部百分比加入5〜10质量％的有机粘合剂; 并进一步向混合物中添加石灰源，使得在原料中的碱度（CaO / SiO 2 / SB> 2 ）可以在0.3〜1.0的范围内。制造还原型团块的方法包括以下步骤：捏合原料混合物; 将捏合的混合物成型为团块; 然后在还原烘烤炉中在1250℃以上的气氛中烘烤25〜25分钟以上的同时还原压块。要熔炼的钢优选为不锈钢。生石灰或熟石灰可用作石灰源。版权所有（C）2008，JPO＆INPIT

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