A turret includes a generally frusto-conical shaped body and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes.

The invention relates to a grinding roller device for a roller mill having a sleeve-like mount for securing the spindle of the grinding roller, wherein the grinding roller is rotatively mounted in axial direction in a stationary way at the end region of the spindle, and wherein the sleeve-like mount features at least one clamping means in order to secure the spindle in the mount against rotation and axial movement. The invention is characterized in that the sleeve-like mount features an inner eccentric sleeve to provide for adjustability of the spindle of the grinding roller, and in that the eccentric sleeve is arranged in the sleeve-like mount to provide at least rotary adjustment of the spindle, and/or in that the eccentric sleeve is displaceably accommodated in the sleeve-like mount to provide axial displacement in axial direction of the spindle of the grinding roller.

A method for drive control of a vertical mill having a grinding plate rotatable about the vertical axis by a drive train composed of an electric motor and a gearbox is disclosed. At least the electric motor and the grinding plate represent inertia elements in a system that can oscillate and are connected by the gearbox operating as a torsion spring element. A variation in the rotation speed of at least one of the inertia elements is measured, and the electric motor is governed by a controller that minimizes the measured variation in the rotation speed. The controller is parameterized for governing the electric motor so as to minimize maximum reaction torques resulting in the gearbox when applying a sinusoidal excitation.

A planet carrier arrangement includes a bearing assembly having first and second roller bearings and a traction element having a first end supported by the bearing assembly such as to enable the traction element to oscillate. A planet carrier is mounted in a suspended manner to the traction element, wherein one of the roller bearings of the bearing assembly is configured to absorb an axial force seeking to lift the planet carrier.

A turret includes a generally frusto-conical shaped body and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes.

A mill, in particular a pendulum mill or roller mill, having a classifier, wherein the mill has a mill housing with an interior in which there is situated a milling space B1 in which a milling device having at least one milling tool is arranged. The classifier is arranged above the milling device in a classifying space B3. At least one drop device is provided which connects the classifying space B3 to the milling space B1. Arranged below the classifier is at least one distribution plate which has at least one drop opening on which the at least one drop device is arranged.

The invention relates to a method and an apparatus for comminuting grinding stock with a roller mill, wherein a grinding plate cooperates with at least two grinding rollers and the grinding stock supplied in the mass flow is comminuted between grinding plate and grinding roller. At least two grinding rollers are driven via dedicated drives, wherein a power compensation control is carried out for the drives of the grinding rollers, such that the power of the drives is controlled in a predefined ratio to one another. The power control is then effected by changing the mass flow of the grinding stock supplied to at least one of the grinding rollers.

A turret includes a generally frusto-conical shaped body and a plurality of static vanes arranged interior to the body and extending inwardly from an interior sidewall of the body. The vanes are configured to guide a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of controlled flows that are communicated to a plurality of coal outlet pipes.

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.