轧钢加热炉能耗模糊变权重组合预测

基于已有的轧钢加热炉的能耗数据,引入了各预测方法的预测相对误差、预测对象的变化趋势和灰色基本权重等概念,建立了轧钢加热炉的能耗模糊变权重组合预测模型。结果表明,此组合预测平均误差和预测平方根误差均较小。     

基于加热机理与XGBoost算法的加热炉板坯能耗预测及影响因素分析

收集了某钢厂生产数据,通过机理分析得出10个与加热炉板坯能耗相关的影响因素,同时通过XGBoost算法,快速分析出各影响因素的贡献度,并对加热炉板坯进行了能耗预测,预测效果较好,并对其中贡献度大的因素进行了单独的分析.结果表明,出炉温度从1220℃升高到1244℃,单耗从1.37 GJ/t升高至1.43 GJ/t,平均...     

加热炉炉温神经网络预测模型的开发

针对加热炉系统非线性、大滞后、大惯性,炉温难以有效预测的问题,以山东钢铁莱芜分公司宽厚板加热炉为研究对象,通过神经网络训练获得充分逼近仿真对象的系统参数,最后使用该方法对莱钢宽厚板加热炉炉温进行预测,结果说明该方法预测准确,具有较强的实践意义,为炉温控制提供了可靠依据,提高了生产效率,降低了能耗。     

热轧1号加热炉改造燃烧系统的选择

加热炉是热轧产线上的关键设备之一，属于高耗能设备，其能耗通常占到整条产线能耗的60％左右，因此，如果能够降低加热炉的能耗水平，将对降低整条热轧产线的能耗起到重要作用。不同的加热炉燃烧系统其能耗水平也有显著差异，降低加热炉能耗的关键是选择合适的燃烧系统。通过对不同型式燃烧系统能耗水平、投资、运行成本等方面的比较，最终确定在梅钢1号加热炉大修改造时选择空气、煤气双预热式燃烧系统。     

热连轧加热炉控制系统及升温曲线的优化研究

为解决当前热连轧加热炉在实际生产中由于对温度控制精度不够而导致的轧制产品质量不好和能耗偏高的问题,在对热连轧加热炉进行综合概述的基础上,采用可兼容通讯模块对控制系统进行改造,对加热炉升温曲线进行优化。优化改造后,对在炉时间、装炉温度和能耗等指标进行综合评估,不仅提升了产品质量,而且降低了能耗。     

步进式加热炉中不同滑块高度的板坯加热方式的优化

<正>为了在步进式加热炉中以最小的能耗获得钢坯的最佳加热方式,本文建立了适用于不同滑块高度的、可用于预测钢板温度历史的三维传热模型。研究了滑块高度对板坯加热能耗、炉口滑道黑印温度均匀性和板坯出炉温度设计要求的影响。模型描述和数学分析物理模型本文以中钢公司(CSC)的加热炉为研究对象,采用与炉内板坯前进(纵向)方向横向的准稳态三维传热模型,对加热炉加热板坯的过程进行了数值模拟。     

加热炉节能降耗技术研究及效益分析

主要介绍了加热炉节能降耗的两个方面:一方面是直接节能,即降低加热炉的燃料消耗和氧化烧损;另一方面是对加热炉排出的烟气余热进行有效回收,回收的余热可以用来预热空气或者燃料降低加热炉的能耗,也可以用来产生蒸汽进行外送产生经济效益。     

GH中小型系列煤气锻造加热炉

一、前言锻造加热炉是锻造行业的关键设备之一,并拥有相当的数量,仅上海地区就有各类锻造加热炉2000余台,其中90％是中小型锻造加热炉。长期以来一直没有引起足够重视,从而造成相同锻造设备的加热炉结构形式,规格尺寸比较混乱,导致加热炉能耗高、热效率低、寿命短、外观差、污染严重的状况。为了改变这种落后面貌,我厂86年经上海市经委,科委立题“优化研制中小型煤气锻造加热炉系列”,针对上述问题,首先对中小型锻造加热炉的结构、规格、定型进行了广泛的调研及系列化、标准化工作,在设计中采用了贯通式半连续加热炉型,设有加     

宝钢条钢加热炉燃烧模型计算机控制系统

介绍宝山钢铁股份有限公司新建条钢步进式加热炉燃烧控制模型的计算机控制系统.加热炉是保证加热物料的加热质量、节约燃料能耗和确保后继工序物料供给的一个重要生产工序.步进式加热炉一般多应用在热轧生产线,此次宝钢前次在条钢生产线新建大方坯步进式加热炉.文中针对条钢加热炉的特殊工艺要求,着重描述加热炉控制模型中的特殊控制部分,包括:加热制度、热跟踪模型、控制模型细分段控制、待轧控制、结合调度模型预测加热时间及模糊逻辑控制等.宝钢条钢加热炉燃烧控制模型的计算机控制系统稳定运行至今,预测计算和模型控制结果令人满意.     

涟钢φ300/φ250轧钢车间加热炉节能改造实践

涟钢φ300/φ250轧钢车间自1980年6月建成投产以来,加热炉能耗一直较高,主要原因是加热炉结构不合理。因此1982年4月利用停产机会,对加热炉进行了改造,取得     

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.