交流变频调速装置控制皮带张力

详细介绍一种新型皮带输送机张力自动控制装置的原理。该装置采用PLC控制和变频调速电机驱动，有友好的人机界面，全自动控制，具有控制精度高、功能完善、运行可靠、维护简单等优点。     

变频器在大型皮带输送机上的应用

皮带输送机是露天铜矿中重要输送矿石的机械设备,针对大型皮带输送机在长距离运送矿石的过程中,采用电机直接启动方式运转会对电器设备、机械装置、及胶带产生很大的冲击大,且无法进行皮带输送机输送矿量的调节和控制。采用变频器驱动控制皮带输送机运转,通过改变变频器频率可以调节皮带输送机运矿速度,可以很容易地实现胶带慢动及满负载启停,通过控制程序的优化可以实现节约电能的目的。结合PLC系统编程控制变频器运行,能增加更多的自动控制和保护功能,还能实现皮带输送机运送矿量大小的自动调控。     

利用电磁感应式限位开关监测输送皮带打滑的方法

利用安装在皮带输送机从动轮上的电磁感应式开关,并配合PLC控制程序或继电器联锁控制对输送机的皮带打滑现象进行监测。     

粉状物料皮带输送机回转式取样机的研制

阐述了粉状物料皮带输送机回转式取样机的研制,通过对皮带输送机输送物料的卸料轨迹的分析计算,确定回转式取样机主要参数:取样回转中心、取样条回转半径、取样轴转速,实现皮带输送机回转式取样机取样的公平、公正、合理。     

矿山机械皮带输送机故障及其防护措施

由于社会不断发展进步,矿山工业同样获得很大程度发展,综合性机械化程度同样在持续提高,所以,在生产中皮带输送机的使用频率也日益增多。矿山企业作业中,皮带输送机往往会发生故障,本文主要对皮带输送机应用过程中的一些问题进行了探讨分析,而且针对于皮带输送机所出现事故寻找其原因,进而提出了相应的应对措施。     

矿石料场管状带式输送机的应用分析

介绍柳钢烧结厂管状带式输送机的应用特点,总结管带机皮带的张紧调整、皮带接头的维护管理、皮带扭曲与跑偏处理、皮带管状成型压带轮调整、输送物料的均匀控制及大块物料预防等应用经验。     

皮带机跑偏原因分析与解决办法

介绍了皮带输送机皮带跑偏的危害,分析了皮带跑偏的原因,并论述了解决常见的各种皮带跑偏故障的纠正措施。     

皮带输送机上清扫器改进

皮带输送机是广泛用于矿山、冶金、码头等输送散料的运输设备,清扫器是安装在皮带机上用来及时清理皮带附着物的辅助设施,对于保护皮带和滚筒有着重要的作用。本文介绍了目前广西钢铁炼铁厂高炉皮带输送机上清扫器存在的不足,并结合实际进行改进。     

浅析煤矿皮带输送机

通过分析了皮带机经常出现的跑偏和断带故障的原因,重点针对皮带输送机事故,从生产管理和技术管理上采取有力措施,减少或避免皮带输送机事故发生.     

一种皮带输送机用断带保护系统的设计

介绍了一种广泛用于冶金、煤炭、矿山、轻工等行业的皮带输送机胶带断带保护系统。实验和实践证明,该系统能有效防止或减轻胶带输送机断裂时因皮带倒滑造成的堆料、撒料等问题,大大缩短了胶带输送机故障处理时间,有效提高了生产效率。     

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.     

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.