Rate of Reduction of Chromium Ore by Liquid Iron Containing Carbon and Silicon

Recovery Rate of Chromium from Stainless Slag by Iron Melts

“…The same experimental apparatus (SiC resistance furnace) as in the previous work 6) was used. At first, about 0.12 kg of Fe-C-Al-Si alloy was contained in an alumina crucible (0.036 m I.D.)…”

“…Hitherto, many works [1][2][3][4][5][6][7] have been made on the decarburization of stainless steel by the addition of mixtures of various powders or previously melted slag in flowing oxygen atmosphere and the smelting reduction of chromium ore by carbon and silicon in iron melts. Miyamoto et al 2) have investigated the effect of slag properties on the Cr 2 O 3 reduction by carbon in steel and reported that the reduction rate was improved by lowing the basicity of the slag or adding Al 2 O 3 or CaF 2 , which improvement was caused by the increase of liquid phase fraction of the slag.…”

Reduction Behavior of Chromium Oxide in Molten Slag Using Aluminum, Ferrosilicon and Graphite.

“…In recent years, smelting reduction processes of chromium ore, in which chromium oxide is reduced in a converter by silicon or carbon in liquid iron, were introduced to cut operation costs. [3][4][5][6][7] However, it is unavoidable that a few mass% of chromium oxide will remain in the slag in these processes. Since the sales value of stainless steel converter slag is low, most is landfilled at present.…”

Interfacial tension between molten iron and CaO–SiO2–MgO–Al2O3–FeO slag system

“…The interfacial tensions of slag and steel have been measured by several authors. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] However, disagreements on the interfacial tension among different investigations are observed because of the experimental difficulty and the requirement of careful experimentation. X-ray source has frequently been used to investigate the interfacial tension between molten steel and slag.…”