| Summary: | 碩士 === 國立雲林科技大學 === 工業工程與管理研究所碩士班 === 97 === We take electronic manufacturing process after the sputtering material, through melting, acid-soluble, extraction, denitration, electrolytic processes, etc., and use the physical and chemical methods, including solvent extraction method and the principle of electrolysis, etc., to recycle a precious metals - indium. And use ICP to test the purity of Indium before the final ingot products.
After collect the purity and cost date information, we use Taguchi Methods to explore the SN ratio of product purity and cost. And take the best two experimental parameters, then using ANOVA to verify, confirm the data and variance Analysis of the results derived from the same as before and then standardized to product purity and cost on the same level.
Then use principal component method analysis to obtain vector formula, and the relevant values into the formula to find the , then the factor of the individual compare with the get the best level of factors. At the same time, use of additive models to forecast the results for SN rate of the best level of factor.
Finally, use the the best of factor level to do the experiment. The NaCl 20% of the total liquor, adjusted pH value to 3, temperature of 40 degrees, 32 percent concentration of hydrochloric acid, with the exception of iron for one hour, Electrolytic pH value is set to 10, electrolytic temperature of 40 degrees to experimen conditions. We do three experiments, and have the value is 0.371 that in the confidence interval, so verify the exact set of parameters feasible.
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