The invention relates to a
production line,
mechanical equipment and a technique method for preparing high-grade
zinc oxide by utilizing
cast iron dust. The method for making the high-grade
zinc oxide by utilizing the
cast iron dust is characterized in that the traditional Webster furnace
production line is modified, a
cyclone dust collector of a unique structure is combined with a multi-stage
cyclone dust collector to substitute part of cooling pipes of a Webster furnace, the
cyclone dust collector as well as a fixed
exhaust pipe and a movable
exhaust pipe divided by an
exhaust pipe cause the length of the exhaust
pipe to be adjustable, the length of the exhaust
pipe is adjusted by virtue of three sets of lead screws and nuts which are uniformly distributed, the lead screws are fixed on the movable exhaust
pipe, and the nuts are fixed on the upper surface of the cyclone dust collector; a cooling
water jacket is additionally arranged outside, so that separating and
settling effects are achieved, and a
cooling effect of a
cooling pipe is also achieved. According to the method for making the high-grade
zinc oxide by utilizing the
cast iron dust, the cast iron dust is utilized, the high-grade zinc oxide is prepared according to a production technology process comprising briquetting, reducing, oxidizing, cooling, separating,
settling, cooling and dust collecting, the content of zinc oxide is more than 98% and is increased by more than 10% compared with that of the zinc oxide produced by the traditional Webster furnace
production line, the whiteness of the zinc oxide is also greatly improved, and the whiteness of the zinc oxide can be 93.