3 results about "Erosiveness" patented technology

This invention discloses a method for calculating and evaluating the erosiveness of slag used for converter slag splashing protection, relating to the field of metallurgical technology. The method includes: obtaining the chemical composition of the slag; thermodynamically calculating the Gibbs free energy of the reaction between each component and magnesia-carbon bricks, classifying components as strongly / weakly erosive; and calculating the oxidative erosion capacity Q. ox (Total oxygen content of highly corrosive components) and structural erosion ability Q st (low melting point liquid phase content × basicity coefficient); and a temperature correction factor is introduced. T Finally, the erosivity index Q is calculated. 侵蚀 = T ×[a1×Q ox +a2×Q st ]. Q 侵蚀 Compared with thresholds of 30 and 60, the slag is determined to be low, medium, or high corrosivity, and suggestions are given for direct slag splashing, adjusted slag splashing, or slag dumping. Industrial verification has confirmed that Q... 侵蚀 The corrosion rate was significantly positively correlated with the actual furnace lining corrosion rate (r=0.93), and the corrosion rate decreased by 70-80% after adjusting the slag composition. This invention fills the gap in the quantitative evaluation of slag corrosivity and provides a scientific and simple operational basis for slag splashing protection of the furnace.