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Evaluating electricfurnace smelting variables using
Optimizing electricfurnace smelting processes using
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23 design 2Where 50 percent silicon Analysis of variance ascent for second Average Responses Bureau of Mines calculating path calculations for path Canonical Analysis carbon in mix Coal-to-coke ratio coefficients confidence limits conventional method Data for calculating eight tests ELECTRIC-FURNACE SMELTING PROCESSES electrode penetration electrode spacing equations estimate evaluated F-ratio factorial design Variable foldover design follows fractional factorial design given in table kilowatts least-squares main effects mathematical model matrix and responses number of tests number of variables Order of trials path of steepest production rate region of interest response-surface methodology Responses Using Variables Results of calculations second series series of eight series of trials shown in table significance signs Spironello standard deviation statistical coding method steepest ascent surface table 12 table 9 Table of Average tions transforming equa trials randomized two-factor interactions two-level factorial design Two-Way Table Units of change units of step Variables and levels voltage and electrode