The invention provides a heat insulating agent for hot metal quenching and dust removal as raw material, and its manufacturing and using method. According to the weight percentage calculation, it includes the following components: dry quenching coke ash dust 50% ~ 100%, water quenched blast furnace slag 0 ~ 50%, expanded perlite 0 ~ 10%. Compared with the prior art, the invention has the advantages of: 1) iron heatpreservation agent 90% ~ 100% by metallurgical waste metallurgical enterprises, without machining or grinding, the cost is obviously superior to the similar metal insulation agent, in accordance with the formula and continuously reduce costs, enterprises meet the different levels of the demand. 2) the hot metal insulation agent can be tightly integrated with the blast furnace slag on the surface of molten iron, which is easy to slagging, the thermal conductivity is small, the heat preservation effect is stable and reliable, no sulfur increase is added, and the cost of steelmaking is not increased. 3) the effect of slag gathering is good, the shell phenomenon of the iron water tank is reduced, and the workload and difficulty of the artificial slag cleaning are reduced. 4) the invention has obvious economic and environmental benefits, and has obvious economic and practical value in the industry.
【技术实现步骤摘要】
一种以干熄焦除尘灰为原料的铁水保温剂及其制造、使用方法
本专利技术涉及一种冶金熔体保温领域,尤其涉及一种以干熄焦除尘灰为原料的铁水保温剂及其制造、使用方法。
技术介绍
铁水罐、鱼雷罐作为炼铁厂中的一种基本设备,在将高炉生产的铁水送往下一道工序过程中,不可避免地会有铁损和温度降低,即热量的损失。相对来说,敞口铁水罐由于保温条件较差,同等条件下铁水温降明显高于鱼雷罐。铁水温度的高低对炼钢的影响很大。根据转炉冶炼工艺,转炉冶炼的热量基本来源于铁水的物理热和化学热。在化学热一定的条件下,铁水的物理热是决定冶炼能否顺行的关键因素。铁水温度低会造成转炉吹损大、钢铁料消耗高、钢水质量无保障以及炉龄下降等后果。铁水温度不仅对炼钢工艺十分重要,对于铁水输送也有影响。如果铁水在输送过程中温度过低,会造成铁水罐车的结壳、结瘤,直接影响正常生产作业。为充分利用铁水热量,保证品种钢正常冶炼,同时达到降低能耗的目的,冶金企业通过向铁水加入各类保温剂,如碳化稻壳、粉煤灰、复合保温剂等,明显降低了铁水温降幅度,满足了炼钢对铁水温度的要求。国内外有较多此方面的专利和论文,如申请号为20151095 ...
【技术保护点】
一种以干熄焦除尘灰为原料的铁水保温剂,其特征在于,按重量百分比计算包括以下组分:干熄焦除尘灰50%~100%、水淬高炉渣0~50%、膨胀珍珠岩0~10%。
【技术特征摘要】
1.一种以干熄焦除尘灰为原料的铁水保温剂,其特征在于,按重量百分比计算包括以下组分:干熄焦除尘灰50%~100%、水淬高炉渣0~50%、膨胀珍珠岩0~10%。2.根据权利要求1所述的一种以干熄焦除尘灰为原料的铁水保温剂,其特征在于,所述干熄焦除尘灰的粒度为0.5mm~3mm,其中碳的重量百分比含量为70%~88%,硫的重量百分比含量0.5%~1.2%,灰分的重量百分比含量8.8%~27%,其余为不可避免的杂质;灰分中SiO2+Al2O3的重量百分比含量合计≥80%。3.根据权利要求1所述的一种以干熄焦除尘灰为原料的铁水保温剂,其特征在于,所述水淬高炉渣的粒度为0.5mm~4mm,玻璃化率≥95%。4.根据权利要求1所述的一种以干熄焦除尘灰为原料的铁水保温剂,其特征...
【专利技术属性】
技术研发人员:王向锋,马光宇,孙金铎,陆云,刘常鹏,徐鹏飞,李卫东,孙守斌,张天赋,王东山,
申请(专利权)人:鞍钢股份有限公司,
类型:发明
国别省市:辽宁,21
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