The invention relates to a mechanical powder grinder comprising a casing supporting a first rotating grinding member and a second grinding member fixed relative to the casing, each of said first and second members being made of an electrically conductive material. According to the invention, the grinder includes an electrical control circuit providing at least one primary electrical connection between the first and second grinding members, and comprising at least one device for measuring an electrical parameter of said circuit. The grinder further comprises a processing device configured to detect an additional connection between the two grinding members, in particular due to the presence of a foreign body between said members, on the basis of the measured value of said parameter.

An impact reactor for comminuting composite materials having a rotor with impact elements is arranged in a cylindrical casing. An end face of the impact reactor, remote from the rotor, is closed by a cover. A suction opening is assigned to the cover and a classifying device is assigned to the suction opening. Such an impact reactor may be used to process, by way of example, accumulator batteries, mineral wool and raw material.

An impact reactor for comminuting composite materials having a rotor with impact elements is arranged in a cylindrical casing. An end face of the impact reactor, remote from the rotor, is closed by a cover. A suction opening is assigned to the cover and a classifying device is assigned to the suction opening. Such an impact reactor may be used to process, by way of example, accumulator batteries, mineral wool and raw material.

A grinder having a rotor and fan assembly mounted in a housing having one or more of the following features: a cutting shaft and a fan shaft which are concentric and are rotated by separate motors; a housing formed in two sections, with a line of division passing through the axis of rotation of the shafts and mounted on rollers; ping pong shaped cutting hammers; and deflectors attached to the inside of the housing and to a deflector assembly on the outside of the housing. The deflectors are movable vertically and horizontally with first and second motion controllers for adjusting the spacing between the cutting hammers and the deflectors. A programmable logic controller is used for independently controlling the speed at which the cutting shaft and fan shaft are rotated and the spacing between the cutting hammers and the deflectors to produce a desired particle size reduction for a selected material.

A grinder having a rotor and fan assembly mounted in a housing having one or more of the following features: a cutting shaft and a fan shaft which are concentric and are rotated by separate motors; a housing formed in two sections, with a line of division passing through the axis of rotation of the shafts and mounted on rollers; ping pong shaped cutting hammers; and deflectors attached to the inside of the housing and to a deflector assembly on the outside of the housing. The deflectors are movable vertically and horizontally with first and second motion controllers for adjusting the spacing between the cutting hammers and the deflectors. A programmable logic controller is used for independently controlling the speed at which the cutting shaft and fan shaft are rotated and the spacing between the cutting hammers and the deflectors to produce a desired particle size reduction for a selected material.

An anvil adjustment assembly of a vertical shaft impactor includes an anvil ring configured to be disposed within a housing of the vertical shaft impactor. The anvil ring includes a tab which is coupled to an elongate jack bolt having a first end and a second end. A jack bolt housing partially surrounds the bolt and is coupled to the housing. A first locking collar and a second locking collar are coupled to the jack bolt. The first locking nut is coupled to the jack bolt on one side of the tab, and the second locking nut is coupled to the jack bolt on the opposite side of the tab. The jack bolt moves along a longitudinal axis within the jack bolt housing between a first position and a second position, and the movement of the jack bolt along the longitudinal axis induces longitudinal movement of the anvil ring.

An anvil adjustment assembly of a vertical shaft impactor includes an anvil ring configured to be disposed within a housing of the vertical shaft impactor. The anvil ring includes a tab which is coupled to an elongate jack bolt having a first end and a second end. A jack bolt housing partially surrounds the bolt and is coupled to the housing. A first locking collar and a second locking collar are coupled to the jack bolt. The first locking nut is coupled to the jack bolt on one side of the tab, and the second locking nut is coupled to the jack bolt on the opposite side of the tab. The jack bolt moves along a longitudinal axis within the jack bolt housing between a first position and a second position, and the movement of the jack bolt along the longitudinal axis induces longitudinal movement of the anvil ring.

Impact reactor (1) for comminuting composite materials, comprising a cylindrical casing (2), in which a rotor (4) provided with impact elements (5) is arranged, wherein the impact reactor (1) is closed on the end face remote from the rotor (4) by means of a cover (7), wherein an suction opening (8) is assigned to the cover (7), wherein a classifying device (9) is assigned to the suction opening (8), and method of processing accumulator batteries, mineral wool and raw material.

Impact reactor (1) for comminuting composite materials, comprising a cylindrical casing (2), in which a rotor (4) provided with impact elements (5) is arranged, wherein the impact reactor (1) is closed on the end face remote from the rotor (4) by means of a cover (7), wherein an suction opening (8) is assigned to the cover (7), wherein a classifying device (9) is assigned to the suction opening (8), and method of processing accumulator batteries, mineral wool and raw material.

A grinder device is provided with two sets of counter-rotating impact elements that pulverize the material via collisions, which represent impact forces twice as powerful through the doubling of the tip velocity. A continuous self-discharge of harder and heavier particles is provided to assure higher energy efficiency and a cleaner product that subjects the unit to less wear and tear. Outlet ports are provided on flange caps that are removably attached to the grinder device so that the position of the outlet port with relation to the position of a grinder stator is selectively modified. The device of the present invention can be provided in a container for integrating into an existing system or to operate as a standalone unit.