Multiple bolts on the liner of the overflow type ball mill in the grinding device of WPA plant have leaked,resulting in low continuous operation rate,severe leakage,short service life of small gears,etc.The main factors affecting bolt leakage are analyzed,through technological improvements such as changing the liner structure,reducing leakage points,and changing the sealing structure of the liner bolts,the leakage of the liner bolts is reduced,the operating rate of the ball mill is increased to above 90%,and the maintenance cost is reduced by about 300 000 RMB Yuan/a.
wet-process phosphoric acid(WPA)ball millleakage of liner bolttechnical transformation
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