镁基粉剂脱硫工艺优化与实践

通过对本钢铁水预处理站镁基粉剂脱硫工艺优化的理论研究和生产初中，探索出适合生产要求的喷吹压力、喷吹速度，钙镁比等工艺参数，喷史工艺优化满足现行生产工艺要求，可保证脱硫效果，提高脱硫剂的利用率，降低钢的成本。     

钒钛铁水脱硫工艺分析及实践

简述了钒钛铁水的物理特性和我国大多数冶炼钒钛铁水的钢厂在脱硫工艺上的选择;概括了镁基复合喷吹脱硫法的工艺原理和其应用于钒钛铁水脱硫的优势;对比国内常用的2种提钒脱硫工艺流程,分析并得出了先提钒后脱硫的工艺优势。通过对某钢厂生产数据的分析得出,采用镁基复合喷吹法对提钒后的半钢脱硫在脱硫剂的消耗、喷吹时间的长短与镁基复合喷吹脱硫法应用于常规高炉铁水脱硫时相当,且镁粉的消耗量随着半钢温度升高而增大,脱硫剂喷入量和喷吹时间对半钢温降的影响相对不明显。     

铁水脱硫剂的特点及镁基脱硫剂在包钢的应用

文章介绍了电石系脱硫剂、苏打粉系脱硫剂、石灰系脱硫剂和金属镁系脱硫剂等常用的铁水预脱硫剂的脱硫机理和特点,重点阐述了镁基脱硫剂的工艺及其在包钢炼钢厂生产中的应用.包钢炼钢厂采用镁-石灰二元复合喷吹脱硫工艺,在镁粉、石灰消耗量分别为0.40 kg/t和1.60 kg/t的条件下,可将高炉铁水脱硫量降至0.012%～0.013%,脱硫率在90%以上.     

二钢钙镁脱硫剂脱硫工艺的应用

本文重点介绍了钙镁混合粉剂喷吹脱硫工艺在二钢的应用,并通过与原钙系脱硫粉剂的对比以及与国内外钢厂采用镁基脱硫剂脱硫工艺的比较,表明采用单喷镁脱硫工艺具有脱硫效率高、粉剂低的优点,建议炼钢厂应采用单喷镁粉工艺进行铁水预处理,以降低炼钢成本,提高炼钢质量,进而取得一定的经济效益和社会效益。     

镁基脱硫剂铁水炉外脱硫的工艺研究

针对镁基脱硫剂铁水炉外的脱硫工艺进行研究,对工业生产的铁水预处理中使用Mg/CaO复合脱硫处理的脱硫数据进行分析。研究表明:脱硫效果取决于铁水初始硫含量、Mg占脱硫剂比率、粉剂喷吹速率等因素,而且与其呈成正比的关系。     

铁水预处理脱硫剂应用试验

采用顶喷吹工艺,试验应用CaO基、CaC2基两种脱硫剂进行铁水预处理。分析了脱硫率、铁水降温、处理后铁水[S]等与脱硫剂单耗的关系,认为选择CaC24 5kg/t、CaO10 5kg/t可以满足济钢铁水预处理工艺要求。     

铁水预处理在钢铁生产中的作用

介绍了铁水预处理工艺发展过程，通过对铁水预处理方法和效果的比较与分析，阐明了铁水预处理在我国钢铁生产中的重要地住，优先推荐采用铁水罐顶喷镁基铁水脱硫和采用转炉法铁水脱磷。     

镁基脱硫剂铁水预脱硫工业优化研究与应用

通过对攀枝花新钢钒公司铁液预处理站镁基脱硫剂脱硫工艺优化的工业试验和生产实践，探索出适合生产要求的喷吹压力、喷吹速度、钙镁比等工艺参数。试验结果表明，喷吹工艺优化后满足了现行生产工艺的要求，保证了脱硫效果，提高了脱硫剂的利用率，降低了吨钢生产成本。     

喷吹镁粉和石灰粉铁水脱硫的统计模型研究

镁粉和石灰粉喷吹脱硫是目前铁水预处理脱硫的重要方法之一。利用某厂大量现场生产数据应用冶金学和统计学基本原理进行多元回归分析,得出了几种主要的操作参数(铁水温度、铁水初始硫含量以及脱硫剂喷吹速度和镁粉吨钢耗量)与铁水脱硫率相关的数学模型。同时,应用该方程讨论了镁粉和CaO粉剂喷吹铁水脱硫时各操作工艺参数对脱硫率的影响,提出提高铁水脱硫率的基本措施。     

镁粒钝化剂的研制

通过对包钢铁水预处理站镁基粉剂脱硫工艺优化的理论研究和生产实践,探索出适合生产要求的低成本镁粒钝化剂,该镁粒钝化剂在钝化生产过程中,无污染,低能消耗,喷吹工艺满足现行生产工艺要求,可保证脱硫效果,降低脱硫粉剂的成本。     

关于高效率、低成本洁净钢平台的讨论——21世纪钢铁工业关键技术之一

高效率、低成本洁净钢平台建设仍是今后几年钢厂科技创新中一项具有普适性、基础性、事关钢厂效率、质量、成本的共性关键技术,对提高企业市场竞争力具有重要意义。洁净钢平台建设需抓好铁水预处理、转炉冶炼、二次冶金、全连铸4项基础支撑型技术和优化-简捷的流程网络和动态-有序运行的物流技术这2项集成技术。当前中国洁净钢平台建设的重点是:认清协同-稳定是洁净钢平台动态运行的核心,高效恒速的连铸生产是洁净钢平台动态运行的有序之源,也是优质、节能、低成本的关键;深入进行各种铁水预处理工艺、装备的适用性研究及技术经济比较;深入研究和优化规范适用范围广、运行效率高、易于协同、成本低廉的钢水吹氩精炼工艺;大力推进真空精炼装备和技术(尤其是高效RH)优化;在炼钢厂新建或改造的设计过程中要高度重视平面布置图(流程网络)的合理化,为稳定、经济地生产高质量钢材打好基础。     

Practice of Hot Metal Full Pretreatment and Less-slag Steelmaking in ShouGangJingTang

The hot metal full pretreatment and less-slag steelmaking process constituted a platform to produce clean steel with low cost and rapid pace and also realized a professional production line. The w_[P] can be less than 0.030% at the end of De-P converter and 0.006% at the end of De-C converter. The w_[N] in steel can be less than 15×10⁻⁶ at the stirring station. This production line can make clean steel steadily used for auto sheet or pipeline, for example X65MS. The De-C slag was left in the converter for the next heat and recycled to De-P converter to reduce lime consumption, which has a great benefit for the cost saving.     

高碳洁净钢热轧盘条的开发实践

高效低成本洁净钢生产技术,是国家钢铁产业政策提倡的冶金技术之一。安阳钢铁股份有限公司在高碳洁净钢生产中,以转炉高拉碳技术为基础,降低增碳剂加入量,同时不断深入研究连铸、轧钢等后道工序的工艺控制参数,钢水纯净度大幅度提高。在没有铁水预处理和钢水真空脱气的条件下,以较低的成本,成功开发出C72DA和C82DA热轧盘条。性能完全满足用户要求,获得了市场的良好评价。     

Desulphurization of Hot Metal and Ferronickel With Calcium Aluminate Fluxes

Traditionally, fluxes containing calcium fluoride and other additives are used for the treatment of hot metal and molten steel. Recently, magnesium powder or lime-Mg mixture is used more popularly in hot metal desulphurization. However, the use of calcium fluoride has been restricted due to environmental concerns, and the supply of magnesium is uncertain for the countries, which are short of magnesium resource. For those reasons, calcium aluminate fluxes are a possible alternative to replace slags containing calcium fluoride or magnesium. Calcium aluminate fluxes can be produced from three different raw materials: (1) high-quality bauxite, (2) residuals from aluminum dross treatment processes and (3) waste products from alumina production. Due to the limited amount and high cost associated with high-quality bauxite, the other two sources are preferred based on both economic and environmental considerations. The objective of this paper is to examine the use of waste slags and by-products from the aluminum industry as potential refining fluxes for the steel industry so that waste disposal from the aluminum industry can be reduced with economical and environmental benefits for both industrial sectors.     

影响铁水预处理镁粉消耗因素探讨

结合本钢铁水预处理生产实际,对影响铁水预处理镁粉消耗的铁水条件、钢种要求、粉剂质量、喷吹模型等因素进行探讨和分析,阐述了降低镁粉消耗的措施,对降低生产成本、提高预处理能力意义较大。     

铁水炉外脱硫的新进展

综述了近年来高炉铁水炉外脱硫的发展现状和进展。对几种常用炉外脱硫剂的脱硫效果和利弊进行了对比分析,提出了目前采用镁基脱硫剂进行深度脱硫是我国发展优质钢材、提高企业竞争力的良好机遇。     

单吹颗粒镁铁水脱硫工艺及应用

介绍了铁水脱硫的几种方法。详细描述了单吹颗粒镁铁水脱硫技术应用于铁水预处理工艺,从而使生产中脱硫时间被缩短,降低了成本,提高了生产效率,钢铁制品质量得到保证,同时对环境的保护起到非常重要的作用。     

Oxygen and Iron-and Steelmaking:Best Friends and Arch-Enemies

Ironmaking is the art of removal the arch-enemy oxygen from iron ore by means of carbon reduction and thus producing hot metal.Steelmaking is the art of removing carbon from liquid hot metal by means of best friend pure oxygen,followed by alloying and deoxidation-where oxygen returns to be the arch-enemy.Non-metallic particles in steel such as oxides can have a detrimental effect on the steel product properties in terms of formability,strength and surface properties.An overview of the battle for clean steel production is given based on the experience of the author in industry as well as university research.     

Control of Sulfur Content in the Production of Clean Steel in Panzhihua Steel

This article mainly introduced the process of clean steel with different ways in Panzhihua Steel based on high sulfur content hot metal. With the development and application of sulfur control technologies in hot metal pretreatment, converter steel-making and refining processes, Panzhihua Steel had achieved the production of clean steel such as 350km/h steel for high speed railway, electric steel, etc.