转炉终点钢水残锰质量分数及其影响因素分析

通过对转炉终点生产数据和铁水成分的统计分析,研究了影响转炉终点钢水残锰含量的因素及其变化规律。研究表明,转炉终点碳含量和铁水硅含量对转炉终点钢水残锰含量及其收得率影响最大;提高转炉终渣碱度和终渣FeO含量对转炉终点钢水残锰含量及锰收得率产生不利影响。铁水初始锰含量升高有利于提高转炉终点钢水残锰含量,但锰的收得率反而下降;在高拉碳条件下转炉终点钢水温度对锰收得率的影响不明显。     

转炉冶炼终点钢水残锰影响因素

通过对铁水成分和转炉冶炼终点生产数据的统计分析,研究了影响转炉终点钢水残锰含量的因素及其变化规律,并以此优化转炉操作,提高终点残锰含量,降低生产成本。     

转炉终点残锰量控制及优化

通过对铁水的锰元素在转炉冶炼过程中的反应机理进行研究,分析各因素对转炉终点残锰质量分数的影响及其变化规律,形成了以终点温度1635～1655℃、碳质量分数0.06%～0.08%、少渣冶炼等为核心的转炉冶炼工艺,转炉终点残锰质量分数提高0.032%,吨钢降低生产成本1.5元以上。     

转炉炼钢加锰矿提高终点锰含量的试验研究

介绍了锰矿还原的机理和转炉吹炼过程中加入锰矿的试验情况和效果,对影响终点残锰含量的因素进行了分析研究,提出了在转炉吹炼过程中加入锰矿来提高终点残锰的技术措施。     

150t转炉终点钢水锰含量分析及控制

阐述了转炉冶炼过程中锰的变化规律,分析了终点钢水锰含量的影响因素,结果表明在实际生产中铁水锰含量和转炉终点温度对终点钢水锰含量无显著影响,转炉终点钢水氧化性和渣量是影响转炉终点钢水锰含量的2个关键因素。通过采取渐增式供氧、枪位控制、顶底复吹效果控制、终点成分控制、转炉模型应用、加料制度调整等措施,终点钢水锰质量分数提高至0.081%,节约锰铁合金约0.32kg/t。     

影响转炉钢水收得率因素分析

钢水收得率是转炉生产的一项重要生产考核指标。本文从铁水条件、终点氧和转炉喷溅等以下几个方面分析转炉钢水收得率的影响因素。     

转炉终点锰含量影响因素的模型分析

分析了转炉钢水终点残锰量的影响因素,针对150 t转炉生产实际数据,研究表明终点残锰量与铁水Si、Mn含量和钢水终点C含量成正相关,并建立了150 t转炉钢水终点残锰量的数学模型。将该模型用于现场检验,其预估值与分析值的偏差值≤0.02%的准确率达到90%,可以把预估残锰值用于配加含锰合金计算,达到减少合金加入量,降低成本的目的。     

转炉冶炼IF钢终点氧含量控制分析

转炉冶炼终点钢水中的氧是产生钢中夹杂物的根源,对钢的洁净度有着不利的影响。为了加强转炉终点氧含量的控制水平,提高产品的内部质量。通过对某厂转炉冶炼IF钢现场试验研究,分析了转炉终点碳氧含量的分布状态,研究了碳含量、炉龄、终点温度和氧耗量等因素对终点氧含量的影响规律,并提出了降低转炉终点氧含量的技术措施。     

提高转炉终点残锰效果的探讨

转炉冶炼低碳钢水时终点残锰控制着钢水和炉渣的氧化性,对提高转炉终点残锰进行了工业试验的研究。结果表明在低锰铁水条件下,转炉冶炼终点前5min加入含锰渣料,终点残锰量可达到0.20%（质量分数）以上;终点残锰每提高0.01%（质量分数）,可降低钢水中氧的质量分数为0.0006%~0.0008%;终点钢水残锰量从0.06%（质量分数）提高到0.25%（质量分数）,炉渣中的（FeO）的质量分数下降约5%~7%。     

脱磷炉冶炼工艺研究与技术指标分析

阐述了脱磷炉相关工艺研究以及与常规转炉冶炼时的主要技术指标对比情况。主要工艺有少渣高效冶炼工艺、底吹系统优化,底吹深脱磷工艺、底吹可视化工艺,转炉终点静止脱碳工艺。技术指标对比分析结果显示：脱磷炉终点平均磷含量为O．014％,常规转炉终点平均磷含量为0．019％,脱磷炉脱磷效果明显;脱磷炉石灰消耗控制在41．45kg／t,常规转炉石灰消耗控制在53．27kg／t;脱磷炉终点渣中平均TFe含量为11．73％,常规转炉终点渣中平均TFe含量为14．38％,脱磷炉金属收得率高;脱磷炉平均终点钢水残锰0．102％,常规转炉平均出钢残锰0．075％,脱磷炉合金消耗少;脱磷炉平均喷溅渣量为3．93kg／t,常规转炉平均喷溅渣量为13．23kg／t,脱磷炉过程控制平稳,金属损耗少;脱磷炉冶炼钢水终点碳氧积为0．002129,常规转炉冶炼钢水终点平均碳氧积为0．002659。脱磷炉控制水平较好。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.