煤气加压系统优化改造

由于历史原因导致莱钢小型区域煤气加压站存在设备分散及加压前煤气管道腐蚀严重的缺陷，分别采取了加压机移机改造和加压前焦炉煤气管道异地改造的措施，实现了加压机的统一管理，提高了设备运行的安全性。     

JX-300X DCS在包钢煤气加压站中的应用

3C章采用了浙大中控推出的全数字化的新一代集散控制系统JX-300x。利用集散控制系统JX-300x实现了对包钢宽厚板混合煤气加压站的自动化控制。包钢煤气加压站的基本组成包括工程师站（Es）、操作站（oS）、控制站（cS）和通讯网络SCnetⅡ。该系统保证控制站、操作站与电气设备之间的协调工作，实现软、硬件、关外设施共享，地址互访。     

安钢1#煤气混合加压站的单加压改造实践

阐述了煤气混合加压站运行中的不足，提出了单加压焦炉煤气和叶轮两方面改造的措施，并取得了良好的效果。     

PCS7在煤气混合加压站控制系统中的应用

描述了采用西门子PCS7实现煤气混合、加压站仪表控制系统的实施方案。着重介绍了煤气混合加压站的控制功能和采用分布式控制系统对传统仪表控制系统改造的实施过程。     

混合煤气热值调控不稳的原因与对策

介绍了邯钢东区钢后煤气加压站采用"先加压后混合"工艺为不同用户供应不同热值的混合煤气或单种煤气。分析了加压混合站煤气供应热值、压力不稳以及酸再生灭火的原因。采用变频调节技术,开发了"参照、给定、跟踪"调控技术,解决了混合站煤气热值、压力不稳的问题,保证了相关生产线的安全稳定生产。     

交流变频调速在转炉煤气回收中的应用

在济钢第一炼钢厂转炉煤气回收加压站系统改造中，采用交流变频器对煤气加压机进行调速，控制煤气流量，实现了回收煤气与总管煤气并网，年节电效益19．35万元。     

泰钢煤气混合控制系统的改造

泰钢30万t冷轧薄板项目配套的煤气混合加压站因原设计未充分考虑实际生产的波动性,煤气流量、压力波动大,热值不稳定,煤气混合加压站无法正常运行。采取先加压、后混合的工艺,并引入了热值调节系统,对煤气混合加压系统进行改造,最终实现了混合煤气品质的相对稳定,热值稳定在8368kJ,压力稳定在11kPa,保证了正常生产。     

煤气混合加压站技术改进实践

介绍了安钢新建1#煤气混合加压站独特的工艺及控制特点,针对设备调试及运行中出现的问题,提出了相应对策,为钢铁行业同类型混合加压站的设计、调试及运行提供了借鉴。     

金属矿山井下破碎站设计浅谈

文章对金属矿山井下破碎站设计进行了分析与总结，将破碎站的布置归结为五种形式，并指出了各种形式的优缺点和适应条件。     

155m~3气烧窑煤气管道恒压控制系统改造

1前言柳钢3座155m3气烧窑使用的燃料是高炉煤气。煤气从管网传送到气烧窑的煤气加压站,经过3台加压机的二次加压达到工艺要求的压力后才输送到炉窑。由于煤气管网压力变化比较大(压力低时只有7kPa,高时达到13kPa),如加压机的转速不调整,管道的出口压力也会     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

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.