A pyramid lining insert/element for mill drum of a grinding mill, comprising of a structural and positional formation of pyramid inserts configured with a front lifter part that extends a first side of the liner member with a defined height and a real lifter part that extends to the rear side conforming shape of pyramid of the said liner member; wherein both the front and rear lifter part having an height; and wherein the said front and rear lifter part are adjacent to each other along the side of the said pyramid shaped lining member and have a front and rear support plate beneath the said front and rear lifter part in order to support the lifter plate and also to provide a robust and solid lining member.

The present invention provides a system and method for more efficient utilization of comminution mills. Sensors are provided in the liners placed within the mill shell. The sensors may include RFID tags, liner wear profile sensors (e.g., such as an ultrasonic sensor), an inertial sensor (preferably included both an inclinometer and an accelerometer, and an acoustic sensor, among others. When the liners are installed in the shell, the RFID tag is used to register the location of the liner within the shell. In operation, the information provided by the sensors is collected by a data transmission unit and sent by transmitter over the air to a computer having an antenna and receiver for such data. The data is correlated and the data is reviewable in real time while the mill is in running.

This invention consists of a new analyzer system of the sounds generated in mills that capture the signals issued by the mineral and steel balls cascade that perform grinding. These signals are processed in an embedded system (2) formed by a field programmable gates array (FPGA) and a processor. The system is comprised of an industrial microphone array (1) that captures the sound signals that are converted from analog to digital through and acquisition system (3) specialized in sound signals, processed by a FPGA capable of performing parallel operations at high speed due to the customized hardware developed for this application, and sent to the processor through a high-speed data bus.

The invention relates to a method of predicting a level of wear of a wear component of a vertical mill, whereby the vertical mill is used for grinding feed material. The method includes, while the mill is in operation, (i) capturing/obtaining a thermal profile of the mill from outside a grinding chamber of the mill, and (ii) determining an indication as to a level of wear of at least one wear component of the mill which is located inside the grinding chamber, based on the thermal profile of the mill. The step of capturing/obtaining a thermal profile may include performing a thermographic analysis of the mill from outside the grinding chamber of the mill. The determining step may include determining whether the wear component requires changing/replacement based on the thermographic analysis of the mill.

A wear indication device comprises an outer body and a sensor configured to detect and indicate wear to the outer body. The outer body exhibits an opening extending at least partially therethrough and comprises a stem region, and a head region integral with the stem region and extending outwardly beyond a lateral periphery of the stem region. The sensor is positioned within the opening and comprises an output device. An assembly, and a method of detecting wear to a component of an assembly are also described.

A process for producing a casing for a roller press for subjecting particulate matter to be ground to high pressure treatment, the casing having a profiling defined by profile comb, wherein the process includes the steps of casting a cylindrical hollow body and introducing axial longitudinal grooves onto the surface of the cylindrical hollow body. The material for casting is of a particular composition, where that composition includes, among other components, between 0.0012% and 0.0027%, by weight, of phosphorus (P).

A wear indication device comprises an outer body and a sensor configured to detect and indicate wear to the outer body. The outer body exhibits an opening extending at least partially therethrough and comprises a stem region, and a head region integral with the stem region and extending outwardly beyond a lateral periphery of the stem region. The sensor is positioned within the opening and comprises an output device. An assembly, and a method of detecting wear to a component of an assembly are also described.

A method of monitoring both liner wear and charge impact in an industrial mill uses a sensor mounted on an elongated element deployed through a shell into a liner of the mill. The elongated element wears at a same rate as the liner under conditions within the shell. Liner wear is related to a reduction in length of the elongated element as measured by travel time of an ultrasound wave, while location and strength of charge impact is related to change in amplitude of vibrations caused by the charge impact. Liner wear measurement can be improved by using shear ultrasound waves instead of conventional longitudinal ultrasound waves. A mill monitoring apparatus has a means for acquiring ultrasonic waves and audible sound waves using the same digitizer; a means for determining the angular position of the monitoring apparatus; and a means for supplying electric power to the apparatus.

A wear protection component includes an elastic material layer and a reinforcing support. The elastic material layer is bonded to the reinforcing support, and the wear protection component is bent into a curved shape. In an area delimited by an outer periphery of the reinforcing support, the wear protection component includes one or more local stress relief areas in which the elastic material layer is not bonded to the reinforcing support.

The invention relates to a jet mill comprising a milling chamber with a longitudinal axis, an inlet at one end of the axis and an outlet at the opposite end of the axis, the milling chamber comprising a multitude of pins arranged in the free flow cross-section of the milling chamber, wherein the pins are arranged in at least two planes perpendicular to the longitudinal axis, the planes being distant to each other in the longitudinal direction, and the pins of one plane being laterally offset to the pins of the subsequent plane, wherein the milling chamber is divided into alternate pin segments and acceleration segments, the pin segments each having at least two planes of pins, and the acceleration segments having no pins.