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简介了煤固体热载体干馏新技术(简称DG技术)。DG技术工艺简单,操作容易,条件温和。分析了本项技术应用于钢铁企业的可行性。半焦用于高炉喷吹,煤气补充钢铁企业内冶金燃气不足。DG技术是解决未来钢铁企业能源平衡的一条可行途径。 相似文献
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高炉喷煤是替代昂贵的冶金焦,降低生产成本,提高生产效率的有效手段之一。作为能源密集型的钢铁企业,随着优质喷吹煤资源的日益枯竭及采购成本持续高位运行,高炉发掘高比例低阶煤喷吹技术一方面能够降低企业的生产成本,提高行业内竞争力;另一方面可以消纳大量的低阶煤资源,保障冶金行业的用能安全。粒煤喷吹技术作为众多低阶煤应用的代表性技术之一,已经在国内外的高炉上进行了充分的实践论证。首先介绍了高炉高比例烟煤喷吹的发展状况,接着分析了高炉喷吹粒煤技术的关键难题、国内外应用案例、国内外操作实践对比及经济效益,最后展望了其在钢铁行业的应用前景,并进行了可行性分析。 相似文献
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焦炉煤气利用途径分析 总被引:1,自引:0,他引:1
通过对焦炉煤气用于加热、发电,制造氢气、甲醇,生产直接还原铁和高炉喷吹进行比较,结合钢铁企业的实际情况,得出钢铁企业焦炉煤气的合理应用是用于高炉喷吹。 相似文献
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"碳中和"、"碳达峰"背景下,钢铁企业实现节能减排以铁前工序最为关键,低碳冶金现存多种工艺路径,主要分为非高炉炼铁和低碳高炉炼铁两大门类.高炉喷吹焦炉煤气的工业化应用为高炉富氢冶炼实现了良好的开端.未来,高炉仍将作为炼铁工业的核心装备,高炉低碳冶炼、全氧高炉、氢冶金的发展将为我国实现碳达峰碳中和作出积极贡献.非高炉炼铁... 相似文献
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高炉喷吹废塑料是一项新型环保技术,德国和日本的一些钢铁企业已成功地采用了该项技术,国内的一些学者也提出了我国高炉喷吹废塑料的设想,以鞍钢为例,通过对废塑料的收集、分类、除氯、投资及经济效益的分析,阐述了鞍钢高炉喷吹废塑料的可行性。 相似文献
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从二氧化碳在钢铁冶金流程的资源化应用出发,介绍了近年来二氧化碳在烧结、高炉、转炉、电炉、炉外精炼、连铸和冶炼不锈钢等流程的应用研究现状和发展情况。结合国内外应用研究现状和本课题组的研究情况,分析了二氧化碳在钢铁冶金各流程应用的可行性和冶金效果。主要介绍的新工艺有烟气循环烧结、高炉风口喷吹CO_2及CO_2作为高炉喷煤载气、转炉顶底吹CO_2、LF炉和电弧炉底吹CO_2、CO_2作为连铸保护气、CO_2用于冶炼不锈钢和循环CO_2燃烧。CO_2在钢铁冶金各流程的应用,合计使用量有望达到吨钢100kg,应用前景非常广阔。 相似文献
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高炉喷吹煤粉是降低炼铁生产成本的重要措施之一,许多钢铁企业都在设法不断提高喷煤化。分析了欧洲和美国的一些钢铁企业的高炉的喷煤工艺及近年的技术经济指标情况。 相似文献
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本文简介了鞍钢采用“CR50型移动式喷粉装置”进行中注管喷稀土粉的试验情况。该方法使稀土收得率达到65%以上,降低稀土合金消耗,提高了成坯率和成材率,并取得了明显的经济效益。 相似文献
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“八五”期间,武钢在保证喷量逐年增长的情况下。对原有喷煤工艺和设备进行了改造,投资少,见效少,使喷煤综合配套生产能力明显提高,满足了现阶段主炉喷吹煤粉的需要,取得了较好的经济和社会效益。提出了“九五”期间进一步强化喷煤的设想。 相似文献
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《钢铁冶炼》2013,40(2):116-119
AbstractAt the Mizushima Works of Kawasaki Steel Corporation, a new deep desulphurisation technology to produce ultralow sulphur steels has been developed to replace the conventional process that comprised ladle furnace treatment followed by flux injection. In the new process, the use of a double plug gas injection system in the ladle furnace to promote desulphurisation, and optimisation of the ladle slag composition by thermodynamic calculations to maximise sulphide capacity, have enabled the flux injection stage to be omitted and shortened the desulphurisation time. As a result of these modifications, 35min after treatment start the sulphur content can be reduced to 5·3 ppm. On average, the time from tapping at converter until teeming start at caster has been reduced by 20·8min enabling production schedules to be synchronised and the maximum number of sequential casting heats to be increased from 3 to 10. There have also been economic benefits: the total steelmaking cost of ultralow sulphur steel has been reduced by 25·5%. 相似文献
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A micellar electrokinetic capillary chromatography (MECC) method has been developed and validated to allow the analysis of a wide range of water soluble and insoluble acidic, basic and neutral drugs and excipients. An electronic database has been established to demonstrate the wide applicability of the method. The method has been validated and is now in routine use. In particular, acceptable injection precision is obtained through use of internal standards. Optimal sensitivity was obtained by using low UV wavelength detection. The method allows a number of cost and time saving benefits. 相似文献
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强广德 《有色金属材料与工程》2012,33(2):81-85
对于大批量、小规格的永磁粘接磁环大多采用注射成型工艺,其模具设计是产品制造的重要环节之一,模具设计的合理与否直接关系到制品的生产效率、成品质量和经济性等.文章分析了多种注射成型模的方案后,结合小规格钕铁硼稀土永磁粘接薄壁磁环的材料特性,设计了一种32型腔圆隙浇口的薄壁磁环注射成型模.该模具具有自动化程度高、尺寸一致性好、能大批量生产等特点,有较佳的经济效益和进一步行业推广的价值. 相似文献
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本文阐述了金川集团有限公司依靠科技进步,狠抓节电技改,强化用电管理,取得了显著的节电效益,为企业降成本,增效益作出了积极贡献。 相似文献
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Percutaneous ethanol injection therapy performed with sonographic visualization is a steadily growing therapeutic method that can be used in the ablation of solid and cystic masses in a variety of anatomic locations. Ethanol has been used for many years as an angiographically administered agent for vascular embolization of tumors such as hepatic and renal neoplasms. It was first used as a percutaneously injected agent for the sclerosis of renal cysts. Local infiltration or intravascular injection of ethanol leads to cell death by causing cell membrane lysis, protein denaturation, and vascular occlusion. Because of the initial success in the sclerosis of renal cysts, percutaneously injected ethanol is now used in the ablation of hepatic cysts and solid tumors, such as hepatocellular carcinomas. As a treatment agent, ethanol combines the benefits of being widely available, inexpensive, efficacious, and relatively easy to administer. Optimal results require that the radiologist have considerable experience in ultrasonographic scanning techniques and facility with percutaneous needle insertion under real-time visualization. Alternatively, the radiologist may choose CT as a method to visualize needle placement. Percutaneous ethanol injection therapy usually is an effective alternative to conventional surgical resection of liver lesions and has a low complication rate. We present two patients in whom hypotensive complications occurred during percutaneous ethanol injection therapy and discuss the likely causative mechanisms. 相似文献