초록

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Abstract ▼ AI-Helper

The main purpose of the present study is to reduce quality variation of iron oxide for soft ferrite produced at hydrochloric acid facility )HAF) in a cold rolled mill factory. We investigated the factor of iron oxide quality variation, the operating condition of hydrochloric acid facility and the ir...

The main purpose of the present study is to reduce quality variation of iron oxide for soft ferrite produced at hydrochloric acid facility )HAF) in a cold rolled mill factory. We investigated the factor of iron oxide quality variation, the operating condition of hydrochloric acid facility and the iron oxide quality with the production lot. Based on this information, we liad developed proper working plan for the diminution of iron oxide quality variation. To reduce iron oxide quality variation, the first priority is to control the picking steels, which seriously affect iron oxide quality variation, and then to separate generated waste acid. theretore, it was possible to reduce iron oxide quality variation with the proper operation of various kinds of waste acid tanks. We could produce iron oxide below 20 ppm SiO$_{2}$ content variation by operation after separation waste acid generated at TCM line.

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