A device for separating material composites to be disposed of, including at least two material fractions with differing material properties, and a method for separating such material composites are provided. The device, in a region of an upper cover plate, has a bowl-shaped dispensing channel having at least one opening facing toward an impact chamber, and a dispenser arranged in the channel and designed to receive material fractions of a second type from the region of the chamber above a first separating screen and/or near the upper cover plate. Individual material fractions of a material composite, such as a material fraction of the second type to be comminuted and having a lower density than a first material fraction, may be separated in larger pieces from remaining material, to facilitate the transport of individual material fractions and further processing as part of raw material recovery.

A device and a plate-like grinding tool for grinding feed material that has a housing extending along an axis of rotation, in which a rotor rotationally driven about the rotation axis is arranged and includes a plurality of axially parallel grinding tools that are surrounded by a stator with stator tools. The effective edges of the grinding tools are arranged radially spaced from the stator tools by forming a grinding gap extending over an axial length of the grinding gap. The material is fed into the grinding gap on an inlet side and exits from the grinding gap on an outlet side. The axially extending effective edges of the grinding tools are divided in the axial direction into at least two first sections, each with a first radial distance from the rotational axis and into at least one second section with a second radial distance from the axis of rotation.

A device and a plate-like grinding tool for grinding feed material that has a housing extending along an axis of rotation, in which a rotor rotationally driven about the rotation axis is arranged and includes a plurality of axially parallel grinding tools that are surrounded by a stator with stator tools. The effective edges of the grinding tools are arranged radially spaced from the stator tools by forming a grinding gap extending over an axial length of the grinding gap. The material is fed into the grinding gap on an inlet side and exits from the grinding gap on an outlet side. The axially extending effective edges of the grinding tools are divided in the axial direction into at least two first sections, each with a first radial distance from the rotational axis and into at least one second section with a second radial distance from the axis of rotation.

A device (10) for mechanically comminuting material conglomerates. The device includes a comminuting chamber (14) having a feed side and an outlet side, surrounded by a chamber wall with rotors (26, 28, 30) each including a rotor shaft and striking tools (38) extending radially into the comminuting chamber. The directions of rotation of the rotors (26, 28, 30) are opposite in at least two consecutive segments. An air stream device (31, 37, 39, 41) for leading a particle/air mixture out of the comminuting chamber (14) is arranged in connection with the comminuting chamber.

A device (10) for mechanically comminuting material conglomerates. The device includes a comminuting chamber (14) having a feed side and an outlet side, surrounded by a chamber wall with rotors (26, 28, 30) each including a rotor shaft and striking tools (38) extending radially into the comminuting chamber. The directions of rotation of the rotors (26, 28, 30) are opposite in at least two consecutive segments. An air stream device (31, 37, 39, 41) for leading a particle/air mixture out of the comminuting chamber (14) is arranged in connection with the comminuting chamber.

A glass/quartz composite structure comprises quartz grit, quartz powder and glass grit wherein the glass grit is in an amount greater than 50% by weight of the composite structure, and a binding resin. The glass/quartz composite structure may be formed into a 1.2-1.5 cm thick slab for countertops using standard cabinet perimeter support. The slab may be made by mixing the quartz grit, the quartz powder, the glass grit, and the binding resin, pouring the mixture in a mold, and compacting the mixture in the mold. Specific natural mineral components may be added to the glass/quartz/resin composite structure to provide aesthetics of specific natural stones.

A glass/quartz composite structure comprises quartz grit, quartz powder and glass grit wherein the glass grit is in an amount greater than 50% by weight of the composite structure, and a binding resin. The glass/quartz composite structure may be formed into a 1.2-1.5 cm thick slab for countertops using standard cabinet perimeter support. The slab may be made by mixing the quartz grit, the quartz powder, the glass grit, and the binding resin, pouring the mixture in a mold, and compacting the mixture in the mold. Specific natural mineral components may be added to the glass/quartz/resin composite structure to provide aesthetics of specific natural stones.

The present disclosure relates to the treatment of streams derived from construction and/or demolition (C&D) debris, such as C&D fines streams, asphalt shingles, drywall, or wood. The process can include a kinetic pulverization stage through a kinetic pulverizer where the frangible materials are size-reduced and the ductile materials are liberated and remain as an oversized fraction. The feedstock can include infrangible materials that also remains as an oversized fraction. The pulverized material is then subjected to a separation stage, which may include mechanical and/or magnetic screening, to separate the oversized material comprising the ductile material, and optionally larger particles of the infrangible material, from the size-reduced material comprising the frangible material, and optionally small particles of infrangible material.

The present disclosure relates to the treatment of streams derived from construction and/or demolition (C&D) debris, such as C&D fines streams, asphalt shingles, drywall, or wood. The process can include a kinetic pulverization stage through a kinetic pulverizer where the frangible materials are size-reduced and the ductile materials are liberated and remain as an oversized fraction. The feedstock can include infrangible materials that also remains as an oversized fraction. The pulverized material is then subjected to a separation stage, which may include mechanical and/or magnetic screening, to separate the oversized material comprising the ductile material, and optionally larger particles of the infrangible material, from the size-reduced material comprising the frangible material, and optionally small particles of infrangible material.

An impact reactor for comminuting material to be comminuted, comprising a cylindrical casing, a bottom, wherein the casing, the bottom and the cover enclose an impact reactor chamber, wherein a rotor is arranged in the impact reactor chamber, wherein the rotor is provided with impact elements, wherein at least one feed opening is provided for feeding material to be comminuted into the impact reactor chamber, and wherein at least one removal opening is provided for removing comminuted material and/or gaseous comminuted products from the impact reactor chamber, wherein the feed opening and/or the removal opening are closable.