A method of upgrading a vertical spindle pulverizer includes the steps of removing a cover from a journal opening in a housing of the pulverizer to access a grinding zone of the pulverizer, removing a first journal assembly having a toroidal grinding roll from the pulverizer through the journal opening, removing a plurality of toroidal table segments from a grinding table of the pulverizer, installing a plurality of inclined bull ring segments on the grinding table, installing a second journal assembly having a conical grinding roll in the pulverizer, and replacing the cover over the journal opening. The inclined bull ring segments are configured to register with a grinding surface of the conical grinding roll.

The present invention relates to tilting a wet stone grinder of capacity in the 125-300 liter size. Tilting is accomplished by a gear driven, manual or motorized tilting mechanism.

The present invention relates to tilting a wet stone grinder of capacity in the 125-300 liter size. Tilting is accomplished by a gear driven, manual or motorized tilting mechanism.

A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.

A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.

A classifier comprising deflector ring having an interior sidewall liner affixed to an interior sidewall of deflector ring and an exterior sidewall liner affixed to an exterior sidewall of deflector ring, outlet housing, a base region formed on a top surface of deflector ring, outlet housing sidewalls, each extending away from an edge of deflector ring, and a top region parallel to base region joined with each angled sidewalls, top region having an upper surface with one or more openings formed therein corresponding to one or more outlet channels, wherein outlet housing further comprises an interior sidewall liner affixed to each of opposing angled sidewalls, each interior sidewall liner extending from a corresponding edge of deflector ring to a respective portion of top region, and an upper wall liner extending along all of inner wall between one or more openings.

A classifier comprising deflector ring having an interior sidewall liner affixed to an interior sidewall of deflector ring and an exterior sidewall liner affixed to an exterior sidewall of deflector ring, outlet housing, a base region formed on a top surface of deflector ring, outlet housing sidewalls, each extending away from an edge of deflector ring, and a top region parallel to base region joined with each angled sidewalls, top region having an upper surface with one or more openings formed therein corresponding to one or more outlet channels, wherein outlet housing further comprises an interior sidewall liner affixed to each of opposing angled sidewalls, each interior sidewall liner extending from a corresponding edge of deflector ring to a respective portion of top region, and an upper wall liner extending along all of inner wall between one or more openings.

A system for detecting a combustion-related condition in a pulverizer includes a pulverizer configured to receive coal chunks via an inlet, to grind the coal chunks into coal powder and to output the coal powder via an outlet. The system includes sensors configured to detect heat input characteristics supplied to the pulverizer and heat output characteristics emitted from the pulverizer. The system also includes a controller configured to determine, based on signals from the sensors, whether a combustion-related condition exists in the pulverizer based on a heat balance function including the heat input characteristics and the heat output characteristics.

A system for detecting a combustion-related condition in a pulverizer includes a pulverizer configured to receive coal chunks via an inlet, to grind the coal chunks into coal powder and to output the coal powder via an outlet. The system includes sensors configured to detect heat input characteristics supplied to the pulverizer and heat output characteristics emitted from the pulverizer. The system also includes a controller configured to determine, based on signals from the sensors, whether a combustion-related condition exists in the pulverizer based on a heat balance function including the heat input characteristics and the heat output characteristics.

A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.