螺旋排料机的设计分析

介绍了设备螺旋排料机的设计结构,根据排料机的工作特点,重点讨论了排料机水冷结构的设计特点,以及螺旋轴基本参数的确定。     

新型螺旋刃碎边机结构及计算

本文介绍了新型螺旋刃碎边机的结构及性能特点,并进行了设计计算方法的搪塞 。     

基于DEM法的竖炉螺旋排料机对物料下行速度的影响

位于直接还原竖炉底部的螺旋排料装置直接影响着炉料的下行速度,进而影响直接还原的反应进程及得到的海绵铁的金属化率。为了得到类似活塞流的炉料下行速度,本文利用离散单元软件EDEM建立了六种改变螺旋叶片直径和螺距的螺旋排料机模型。结果显示:缩小螺距虽然能使炉料下行速度沿着竖炉径向分布变得更加均匀,但其影响程度没有缩小螺旋叶片直径大。当最小片螺旋叶直径为500 mm时,炉料下行速度分布近似为一条水平线,但此时竖炉中心炉料下行速度过慢,容易增大死料堆的高度,故综合考虑竖炉的实际生产,在本模型中螺旋叶片的最小直径应不小于600 mm。     

GL—600型系列螺旋选矿机的研制

本文简要介绍了国内外螺旋选矿机的发展概况，叙述了ＧＬ－６００型系列螺旋选矿机的结构特点、选别原理及工艺参数对选别的影响。最后给出了工业试验结果。     

包钢焦化厂选煤再洗机技术改造

结合主洗机技改成功的经验,经过研究论证,跳汰系统再洗机技术改造依然选用数控电磁风阀,筛下空气室,液压自动排料跳汰机,结构采用1段4室。改造后取得了很好的效果,经济效益明显。     

加压浸出过程检测与控制

针对红土镍矿浸出工艺特点,论述了该工艺控制方案和检测仪表选型要求,重点阐述了加压釜排料工艺设计方案及排料控制阀的选型特点,介绍了加压釜排料闪蒸器的工艺特点、控制要求和闪蒸器液位检测方法.     

焙烧短窑研制浅谈

介绍了红土镍矿资源现状、红土镍矿的处理工艺方法及焙烧短窑的研发背景。焙烧短窑作为新兴的环保设备,具有螺旋往返快速均匀给料、液压倾翻排料、还原时间可控、热效率高、利用率高的特点,在稀有贵重金属冶炼方面具有非常广泛的应用前景。     

宝钢原料煤筒仓操作设计与探索

详细介绍了宝钢煤筒仓的工艺特点以及筒仓进料排料操作管理、筒仓进料排料程序优化设计,通过系统测试,满足设计要求。煤筒仓于2016年12月29日正式进料,并于2017年4月正式向用户输出。运行半年来,进料排料、库存控制、沉降检测均达到了预期效果。宝钢煤筒仓的建设和投用,为改善料场环境、提高自动化水平创造了较好的条件,对同行料场改造有较好的指导意义。     

旋转螺旋溜槽

旋转螺旋溜槽是一种高效率的重选设备,它综合了螺旋选矿机、螺旋溜槽、摇床和离心选矿机的特点,设计制作了使螺旋溜槽旋转,并在螺旋溜槽工作面上设有特殊的楔形条或刻槽,且使条或刻槽与螺旋溜槽直径成一定角度。从而强化了选别过程,改善了选别效果,提高了有用矿物的精矿品位和回收率。该设备还配有连续给矿、连续得精矿、连续排尾矿和均匀给入洗涤水的装置,是我国首创的一种重选设备,与国外先     

圆筒混合机排料端支架结构强度计算

圆筒混合机主要用于钢铁和有色金属冶炼烧结物料的混合和制粒作业。排料端支架设置于圆筒混合机筒体排料侧,主要起支撑排料口罩及溜槽的作用。本文对排料端支架结构强度进行理论分析与计算,为优化设计支架结构提供理论参考。     

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.