共查询到20条相似文献,搜索用时 812 毫秒
1.
2.
3.
4.
5.
6.
烧结过程主要借助配入烧结料中的固体燃料的燃烧而产生的高温下进行的。烧结过程温度的高低,燃烧速度,燃烧带的宽度及烧结料的气氛等,都影响到烧结矿的产质量及燃耗水平。燃料的燃烧性能主要取决于燃料的种类及粒度。燃料的适宜粒度,对于每一种烧结原料既取决于燃料的燃烧速度,同时又与烧结料中其他成份的粒度组成、导热性能等因素有关。燃料的种类主要取决于生产单位的供料情况,调整受到很大局限。而燃料的粒度则 相似文献
7.
8.
1前言
柳钢110m^2烧结机工程对燃料粒度的要求非常严格,燃料粒度过大或过小,都将增加煤粉用量,使烧结固体燃耗升高,烧结矿质量变坏。当烧结混合料中煤粉粒度过大(〉3mm)时,将造成燃烧带变宽,料层透气性变差,燃料在料层中的分布亦不均匀,大颗粒周围过熔,离大颗粒远的地方则不能充分固结;在布料时还易形成偏析而使燃烧集中于料层下部,造成烧结料层上下温差加大,导致上层烧结矿结构疏散,强度不好, 相似文献
9.
10.
提高厚料层烧结燃料燃烧性的试验研究 总被引:1,自引:1,他引:0
厚料层烧结是烧结技术发展的重要方向,但料层增厚引起一系列烧结行为的变化,如自动蓄热加强,导致料层高温区变厚,气体体积膨胀量增加,透气性恶化,氧气的质量含量降低,燃料燃烧速度减慢,高温区宽度进一步增加,还使得残碳和无益燃烧增加,下部烧结矿过熔,影响烧结矿的产、质量,进而降低厚料层的节能效果。为了解决这些问题,采用粒度为1.00~3.15 mm的高燃烧性燃料,选择燃料的配加方式为"燃料分加"或"燃料、熔剂共同分加"等方案提高厚料层烧结固体燃料的燃烧性,并对各试验方案下的透气性和烧结指标进行研究,结果表明上述3个措施均有利于厚料层烧结的实施。 相似文献
11.
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。 相似文献
12.
13.
14.
<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 相似文献
15.
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, 相似文献
16.
《China Nonferrous Metals Monthly》2014,(10)
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 相似文献
17.
《China Nonferrous Metals Monthly》2014,(10)
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 相似文献
18.
《China Nonferrous Metals Monthly》2014,(10)
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, 相似文献
19.
《China Nonferrous Metals Monthly》2014,(12)
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. 相似文献
20.
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. 相似文献