On left is a showing of the “standard gyratory with straight concaves” is a section through any vertical, radial plane in the crushing chamber of one of the intermediate sizes of the crusher. In order to understand the crushing action in such a chamber it is helpful to consider the process as though each step took … Read more
On a 11’-6” x 22’-0” Ball Mill, the trunnion bearing lubrication system provides continuous low pressure flood oil for cooling and lubrication of the bearings, and high pressure oil for hydrostatic lift of the feed and discharge trunnions during start-up of the mill. System monitors including pressure switches and flow monitors are provided, along with temperature … Read more
Schedule Compliance Definition: “Schedule Compliance” measures scheduled maintenance jobs against unscheduled jobs. It is the total maintenance work hours scheduled divided by the total scheduled and unscheduled hours worked for a given period of time. Scheduled Work is defined as: Any maintenance job or task that has a start date and time formally agreed to by … Read more
Maintenance Supervisor Definition: The principal activities of the Front Line Maintenance Supervisor (FLMS) is the direct supervision of the maintenance crews and the successful completion of assigned tasks. The title Front Line Maintenance Supervisor shall define either a mechanical or electrical supervisor. Responsibility: The FLMS is responsible for carrying out the daily routines of conducting, applying and … Read more
Computerised Maintenance Management System (CMMS) DefinitionThe Computerized Maintenance Management System (CMMS) is a tool used to collect field data and convert it into useful information such that maintenance can determine work needs, control the work and measure effectiveness in carrying out. The CMMS has three basic functions: To determine what work must be accomplished … Read more
The Mission of a Maintenance Group The mission of the Maintenance Team is to support and enhance the profitability of the treatment and infrastructure Facilities by the preservation of the physical assets and thus assuring their operability. This is accomplished through planned, scheduled, efficiently executed and quality controlled preventive and predictive maintenance of the equipment and … Read more
Most Marcy Rod/Ball Mills are provided with a discharge housing mechanism mounted independently of the mill. This unit consists of the housing proper, plug door, plug shaft, arm and various hinge pins and pivot and lock pins. The door mechanism is extra heavy throughout and is subject to adjustment as regard location. Place the housing … Read more
The following equation is used to determine the power that wet grinding overflow ball mills should draw. For mills larger than 3.3 meters (10 feet) diameter inside liners, the top size of the balls used affects the power drawn by the mill. This is called the ball size factor S. Rod and Ball Mills … Read more
