马钢1号300m^2烧结机无动方热风系统烧结的生产实践

马钢1号300m^2烧结机通过采用无动力热风烧结技术，烧结过程发生了明显变化，烧结矿质量改善，固体燃料消耗下降，烧结机利用系数有所降低。     

德国HKM烧结机尾烟气循环LEEP技术

<正>在烧结过程中,各种烧结废气的含量在烧结机长度方向上并不是均匀分布的,烧结料中的水分主要在烧结机前半部排出,较高浓度的硫氧化物、氯化物和PCDD/F主要在烧结机的后半部排出,CO、CO_2和NO_x沿烧结机均匀分布。LEEP技术是将烧结机后半部排放的所有废气收集,沿整个烧结机身返回到系统,循环废气中的氧气提供燃料燃烧所     

烧结燃料预筛分系统改造生产实践

鞍钢股份有限公司炼铁总厂新烧分厂为提高燃料利用效果、解决燃料过粉碎和能源浪费的问题,烧结燃料预筛分采用了悬臂筛分震动筛。实践表明,烧结燃料粒度组成得到了优化,烧结机台时产量提高了5 t/h,烧结固体燃耗下降0.75㎏/t。     

降低3#烧结机固体燃耗的实践

烧结工序的能耗约占钢铁生产总能耗的10%,这其中,固体燃料消耗占到70%~80%,所以,降低烧结固体燃料消耗是降低烧结工序能耗的主攻方向。介绍了安钢3#烧结机在降低固体燃料消耗方面所采取的措施和取得的进展。     

1#2#烧结机蒸汽预热生产实践

选烧厂1#2#烧结机蒸汽预热的使用,对提高混合料料温起到一定积极作用,同时对烧结机固体燃料消耗、能源消耗、烧结成本等造成一定的波动,本文主要通过对烧结技术经济指标的分析研究,摸索蒸汽预热的使用对实际烧结生产的影响。     

宏阳钢厂42m2烧结机生产中存在的问题及解决方案

随着高炉对烧结矿质量要求的提高,原燃料及烧结工艺方面的问题成为制约烧结生产发展的主要因素。针对宏阳钢厂 42m2烧结机存在的影响烧结生产因素进行了分析,并采取相应技术措施加以改进,使烧结机利用系数得到提高,保证了为高炉提供优质结烧矿。     

降低360m~2烧结机固体燃耗的实践

为了发挥大型烧结机的效能,进一步降低铁前成本。通过采取稳定烧结用原燃料结构、改进工艺技术、改造设备、推行标准化操作等措施,促进了烧结操作水平的提高,在入烧原料较差的条件下,360m2烧结机固体燃耗大幅度降低。     

控制烧结机烟气NOx超标排放的方法及措施

针对105 m2烧结机烟气NOx(氮氧化物)排放量超标的情况,通过4座烧结机连续生产的工业性试验,探索了在正常生产工艺装备和原燃料条件下降低烟气NOx排放量的措施.在烧结产能富裕的前提下,通过降低烧结机机速,提前烧结终点,减小烧结机燃烧带面积,以减少NOx的生成量.工艺优化后,烟气NOx含量由最高273 mg/m3以上...     

梅钢四号烧结机配加氧化铁皮的生产试验

由于烧结工序产生的NOx主要为燃料型NOx[1](90％以上是由烧结燃料燃烧产生[2]).氧化铁皮中的FeO在烧结过程中放热,可替代部分焦粉,对降低固耗有一定效果,因此,理论上烧结生产添加氧化铁皮,通过降低固体燃料消耗也可以达到降低烧结烟气NOx浓度的目的.为实现烧结烟气NOx源头治理[3]和减少排放,在梅钢四号烧结机...     

宣钢提高1#烧结机利用系数的实践

分析总结了保障1#烧结机利用系数的过程和方法。近几年宣钢利用设备定修机会保证烧结机较低的漏风率,烧结机台车挡板高度增加至800 mm,利用厚料层烧结原理操作,提高烧结矿的产量和成品率,降低燃料消耗。根据原料条件变化制定相应的工艺操作制度,细化操作方法。经过工艺、设备的改进,1#烧结机的利用系数明显提高,进一步降低了烧结工序成本。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

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.