The thermodynamic behavior of sulfur in BaO-BaF2 slags

A gas-slag-metal equilibration technique was used to determine the sulfide capacity of the BaO-BaF₂ system at 1473 and 1573 K. The dependence of carbonate capacity on the slag composition was also measured at these temperatures. It was found that the BaO-BaF₂ system has the highest sulfide capacities among the fluxes which are of metallurgical interest. The dependence of sulfide and carbonate capacities on the partial pressure of O₂ and CO₂ was also investigated. The partial pressure of CO₂ proved to have a strong effect on these values at the investigated temperatures. The influence of temperature on the sulfide and carbonate capacities was studied in the temperature range between 1423 and 1623 K. The data for sulfide and carbonate capacities were correlated in order to check if the carbonate capacity can be used as a measure of basicity of slags. It was found that the carbonate capacity can be used as a representative measure of the slag basicity at low contents of BaO and at temperatures higher than 1623 K when the carbonate dissolution into the slag is low and the ratio of the activity coefficient of a sulfide ion to that of a carbonate ion is independent of slag composition. on leave from the Department of Metallurgy, Higher Institute of Chemical Technology, Sofia, Bulgaria     

The composition and temperature dependence of the sulfide capacity of metallurgical slags

The concept of optical basicity and its applicability as a means of correlating the available data on the sulfide capacity of metallurgical slags has been reviewed. An excellent correlation based on very extensive data at 1500 °C, which was discussed in a previous paper, is combined with good correlations based on considerably less data at 1550 °C and 1650 °C to quantify the effect of temperature on the sulfide capacity of slags. The combined effects of slag composition and temperature have been expressed in the equation, logC _s = [(22690 – 54640A)/7] + 43.6A − 25.2. Use of this equation permits the calculation of the sulfide capacity of a slag at any temperature between 1400 °C and 1700 °C simply from a knowledge of its chemical composition, and can be employed for virtually any oxide slag of interest in the field of iron and steelmaking. This, in turn, permits calculation of the equilibrium distribution of sulfur between this slag and iron or steel, provided that the oxygen potential is known or can be calculated from the degree of deoxidation applied.     

钢包炉(LF)预熔精炼渣的研究

预熔精炼渣具有成分均匀，性能稳定，储存时不吸水等特点，钢包炉中使用预熔精炼渣时成渣均匀且速度快，具有较强的吸附钢中非金属夹杂的能力。综合脱硫率高等冶金效果。有显著净化钢液作用。     

梅钢连铸中间包系统技术改造

梅山炼钢厂通过对中间包的扩容改造，提高中间包及水口的烘烤效率；增加中间包冶金稳流器，改进中间包水口座砖、挡渣墙等耐火材质；进行中间包气幕挡墙控制技术的开发等一系列技术改造，大大提升了中间包的冶金功能，实现有效控制钢水的成分、温度和夹杂物含量，提高钢质量的目的．     

有色冶金废渣中有价金属回收的技术及现状

分析了我国金属资源及有色冶金废渣现状,提出有色冶金废渣中有价金属的综合回收是我国有色冶金、金属资源可持续发展的必然选择,同时提出多层次、多元化综合利用有色冶金废渣的概念,文章还介绍了我国有色冶金废渣中回收有价金属的主要技术。     

有色冶金废渣中有价金属回收的技术及现状

分析了我国金属资源及有色冶金废渣现状，提出有色冶金废渣中有价金属的综合回收是我国有色冶金、金属资源可持续发展的必然选择，同时提出多层次、多元化综合利用有色冶金废渣的概念，文章还介绍了我国有色冶金废渣中回收有价金属的主要技术。     

冶金炉渣氮化物容量研究的进展

本文总结了近年冶金炉渣氮酸盐容量的研究方法，氮在炉渣中存在形态与炉渣氧分压的关系，炉渣氮化物容量与温度及炉渣成分的关系，并给出设计钢液脱氮渣系的基本原则。     

Waste-free processing of steel-smelting slag

The MAGMA multipurpose continuous coated smelter with liquid-metal cooling of the housing has been developed. Waste-free processing systems for steel-smelting slag and other metallurgical wastes have been developed and tested. The test results confirm the feasibility of such waste-free processing systems, permitting the extraction of iron and slag melts with the required composition and properties (Portland cement clinker, etc.).     

复吹转炉炉底控制技术应用实践

介绍了复吹转炉炉底上涨的影响因素,通过造渣工艺制度控制冶炼过程温度控制及溅渣工艺控制等技术应用,有效地预防了炉底上涨,使复吹转炉冶炼效果得到改善。     

复吹转炉炉底控制技术应用实践

介绍了复吹转炉炉底上涨的影响因素,通过造渣工艺制度控制冶炼过程温度控制及溅渣工艺控制等技术应用,从而有效地预防了炉底上涨,使复吹转炉冶炼效果得到改善。