By adopting the transformation of three-way type ventilation structure and hydraulic adjustment valve control for the flaps of 1#and 2#bellows air pipes of 3#500 m2 sintering machine,the problems of straight-through flap butterfly valve easy material blocking,trolley wearing caused by bellows material accumulation,cracking and failure of flap adjustment device are completely solved.The effective control of the sintering process under the condition of micro-negative pressure operation in the ignition hearth is realized,and the consumption of sintering gas is reduced by 15.7%year-on-year,which is conducive to reducing the cost of sinter ore.
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