有关我国链箅机-回转窑球团对标挖潜指标的探讨

1国内外链箅机-回转窑球团技术发展状况 1．1国外链箅机-回转窑球团技术发展情况 1960年世界上第一套生产铁精矿球团的链箅机-回转窑生产线于美国亨博尔特球团厂建成投产，链箅机宽2．84m，长21．64m；回转窑直径3．05m，长36．6m，单机产量33万t／a。国外链算机-回转窑球团生产系统经过几十年的发展，通过对链一回球团厂焙烧过程的气体系统进行数代的改进，采用完美的焙烧模型控制整个球团焙烧工艺过程。到     

链算机—回转窑球团工艺的开发与应用

球团矿是炼铁高炉不可缺少的优质炉料，北京首钢设计院率先开发适合我国国情的、以煤为燃料的链算机—回转窑球团工艺技术，并进行其工艺和设备技术的研究、设计和推广应用，为利用我国自有知识产权、主机设备完全立足于国内制造，建设大中型球团生产线创出了一条新路。链箅机—回转窑球团工艺在我国的起步和发展较晚，有关的工艺和设备技术仍需要进一步研究和探讨。     

链箅机-回转窑系统中的氧化球团冷却

1链箅机-回转窑系统概述 铁矿球团目前在世界范围内已被广泛采用，氧化球团矿早已成为高炉炉料的重要组成部分。铁矿球团经过几十年的发展至今形成了三种主要的球团工艺方法，即竖炉球团法、链箅机-回转窑球团法、带式焙烧机球团法。其中竖炉球团法除在中国外已逐渐走向衰落，其产量在整个球团矿产量中所占的比例已经很低，因此目前用于工业生产的主要是链箅机-回转窑球团法和带式焙烧机球团法。根据美国Allis Mineral System（以下简称AMS，现在已并入METSO）公司的统计，采用链箅机-回转窑法生产的球团矿产量占整个铁矿球团产量的百分之五十左右。     

500万t链箅机-回转窑球团工艺及装备

钢铁行业是耗能大户,为实现节能减排,设备的大型化已经成为发展的必然趋势。在湛江500万t链箅机-回转窑球团的设计过程中,避免了以往链箅机-回转窑球团厂遇到的一些实际问题,开发的大型造球机提高了效率、降低了单耗,成功实现大型链箅机头尾双传动,应用先进的焙烧监控技术防止结圈,实现球团添加内配煤技术,膨润土拆袋全自动技术,以及耐火材料烘烤等先进技术,为推动大型链箅机-回转窑球团工艺的发展迈出了重要的一步。     

我国链算机-回转窑球团工艺有关技术问题探讨

近几年，我国链箅机-回转窑球团发展很快，从2000年首钢球团厂截窑改造成功，至今仅5年时间就建成20多条生产线。目前，有10条以上生产线正在建设中。在链箅机-回转窑球团日趋发展的今天，     

链箅机-回转窑工艺生产碱性球团矿工业试验

在实验室研究的基础上,开展了链箅机-回转窑工艺生产碱性球团矿工业试验.结果表明,生产二元碱度(CaO/SiO2)为1.0左右的球团矿时,与酸性球团矿生产工艺相比,将预热段温度提高30℃左右,回转窑窑头温度降低10℃左右,链箅机的机速降低0.3m/min左右,成品球团矿的抗压强度可达到或稍高于酸性球团矿.碱性球团的还原膨...     

对球团竖炉技术发展的几点设想

1 前言 国内目前球团矿生产的主要工艺方法有带式焙烧法、链箅机-回转窑法、竖炉法三种。以前由于带式焙烧机和链箅机-回转窑建设投资和制造要求相对较高，一般都适宜于生产规模较大的钢铁企业或矿山，而对于生产规模适中的中小型企业来讲，则采用竖炉法生产球团矿。但目前随着竖炉大型化技术的突破，竖炉法球团生产仍将会占有一席之地。     

链箅机-回转窑技术提升实践

针对河钢宣钢链箅机-回转窑生产中存在的工序能耗高、球团质量流动大、回转密结圈等问题,通过开展产线对标、工艺测定研究,找到了问题症结所在,并通过制定实施生球造球优化、辊筛筛分优化、链箅机三段温度压力优化、回转窑环冷机用风优化四大工艺优化方案,回转密结圈时间由1.5个月延长到4个月,产量达3145 t/d,链箅机-回转窑生...     

200 万t链箅机-回转窑球团生产线快速达产实践

介绍了邯钢200万t链箅机-回转窑酸性氧化球团生产线的工艺特点和主要设备,以及建成投产后试生产的有关情况。通过周密的部署和安排,该生产线实现了40天快速达产的目标。     

链篦机-回转窑-环冷机氧化球团工艺设计及实践

探究链篦机-回转窑-环冷机氧化球团工艺设计过程中的设备选型。通过分析某公司180万t链篦机-回转窑-环冷机氧化球团工程中干燥机、高压辊磨机、混合机、圆盘造球机等设备的选型优化,使类似生产规模链篦机-回转窑-环冷机氧化球团工程的工艺设备选型更好地服务于生产。     

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.