DRUM MILL REHABILITATION METHOD Russian patent published in 2011 - IPC B23P6/00 

FIELD: mining.

SUBSTANCE: mill rehabilitation is performed at industrial site of the company. After the mill is removed, flanges of mill trunnions and drum are installed in series. Planes of flanges of loading and unloading trunnions are installed horizontally. Axis of rotation body with cantilever guide is arranged and fixed in each hole of flange, and support platform is fixed on the guide with possibility of circular rotation. First, welding equipment is arranged on platform and surfacing and recovery of worn-out circular and cylindrical parts of mouths and flanges of trunnions, as well as drum of mill is performed. Milling equipment is installed on support platform and excess surfaced metal is cut on annular and cylindrical surfaces and initial geometrical parameters of flanges of mill trunnions and drum are recovered. Then, grinding equipment is arranged on platform and surfaces of flanges are ground. In order to connect unloading and loading trunnions to the appropriate flanges of mill drum, coaxial mounting holes are drilled in them.

EFFECT: lower costs of repair and rehabilitation operations.