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- W2521104008 abstract "Research work has been carried out on the reduction of FeO from liquid slags of the CaO‐FeO‐SiO 2 ternary system using a graphite rotating disc technique. The investigations were conducted on slags with a basicity of CaO/SiO 2 = 1.27 and FeO contents of 20 and 60%, at temperatures of 1350 and 1420°C. The calculated viscosity range for these slags is within 2.53 – 0.43 dPa·s. It has been found that the factor controlling the reduction process is diffusion of FeO towards the disc surface, both in the case of the reduction from the slag with 20% FeO and in the case of the reduction from the slag with 60% FeO fraction. The diffusion coefficient of FeO at the reduction temperature of 1350°C is of the order of magnitudes of 10 −7 cm 2 /s, while at 1420°C it reaches the order of 10 −6 cm 2 /s. The calculated thickness values for the limiting diffusion layers range from 8.54·10 −3 to 0.70·10 −3 cm. It has been found that with increasing reduction rate also Boudouard's reaction starts to be important to the overall reduction rate. The limiting reduction rate at which Boudouard's reaction starts to be important to the entire process is dependent on temperature, being approximately 10.0·10 −6 mol FeO/cm 2 s at 1350°C, and approximately 15.0·10 −6 mol FeO/cm 2 s at 1420°C." @default.
- W2521104008 created "2016-09-30" @default.
- W2521104008 creator A5072459499 @default.
- W2521104008 date "2000-01-01" @default.
- W2521104008 modified "2023-10-05" @default.
- W2521104008 title "Reduction of iron oxides from liquid slags using a graphite rotating disc" @default.
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- W2521104008 doi "https://doi.org/10.1002/srin.200005686" @default.
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