A classifier for separating particles is provided. The classifier includes a rotor having a direction of rotation defined by a rotational axis of the rotor, and a plurality of blades disposed on the rotor around the rotational axis. At least one blade of the plurality has a swept orientation in the direction of rotation. The at least one blade is arranged to contact and direct the particles away from the classifier and thereby restrict the particles from concentrating in areas adjacent to the classifier.

A head assembly can be operationally mounted to the outlet of a conventional harvester extractor, such as a sugarcane harvester. The ancillary fan assemblies can generally direct suspended trash materials (that would otherwise be expelled from an extractor outlet) in a substantially upward and laterally outboard directionthat is, toward both lateral sides of a harvester. A duct assembly having an inlet and an outlet generally extends from each ancillary fan assembly to a position generally above a track of a harvester. Trash material expelled by a harvester extractor enters the head assembly and is directed by the ancillary fan assemblies into the duct assemblies, through the duct assemblies, and onto the upper surfaces of the tracks of the harvesters. The trash material is then conveyed by the tracks toward the front or forward portion of the harvester, where it falls off of the tracks generally in the path of the harvester. As the harvester continues moving forward, the harvester runs over the deposited organic trash material, plowing the organic trash material into the underlying terrain.

Provided is a vertical roller mill equipped with a rotary classifier for causing a plurality of classification blades provided above a rotary table and positioned around an axis to rotate about the axis, wherein: of a solid fuel pulverized by a roller, the rotary classifier guides solid fuel fine powder from an outer-circumferential-side space to an inner-circumferential-side space surrounded by the plurality of classification blades, and suppresses, by collision with the plurality of classification blades, an intrusion of solid fuel coarse powder into the inner-circumferential-side space; and each of the plurality of classification blades is shaped in a manner such that there is no interference between a scattering direction in which the coarse powder that collided with the classification blades scatters and an intake direction in which the fine powder is guided to the inner-circumferential-side space, and the scattering direction is oriented upward relative to a horizontal direction.

Provided is a vertical roller mill equipped with a rotary classifier for causing a plurality of classification blades provided above a rotary table and positioned around an axis to rotate about the axis, wherein: of a solid fuel pulverized by a roller, the rotary classifier guides solid fuel fine powder from an outer-circumferential-side space to an inner-circumferential-side space surrounded by the plurality of classification blades, and suppresses, by collision with the plurality of classification blades, an intrusion of solid fuel coarse powder into the inner-circumferential-side space; and each of the plurality of classification blades is shaped in a manner such that there is no interference between a scattering direction in which the coarse powder that collided with the classification blades scatters and an intake direction in which the fine powder is guided to the inner-circumferential-side space, and the scattering direction is oriented upward relative to a horizontal direction.

The invention relates to a method and system for the environmental remediation of materials that are contaminated with heavy minerals, such as heavy metals. The invention finds utility in removing heavy minerals from materials such as soils, sediments, mine tailings and ores. The invention provides a means for removing heavy minerals from contaminated materials without the use of water while reducing the generation of dust. Thus, the invention provides an environmentally friendly method for the remediation of sites that are contaminated with heavy minerals.

The invention relates to a method and system for the environmental remediation of materials that are contaminated with heavy minerals, such as heavy metals. The invention finds utility in removing heavy minerals from materials such as soils, sediments, mine tailings and ores. The invention provides a means for removing heavy minerals from contaminated materials without the use of water while reducing the generation of dust. Thus, the invention provides an environmentally friendly method for the remediation of sites that are contaminated with heavy minerals.

A centrifugal separator including a separator housing and a separator wheel, which revolves in the separator housing, wherein the separator housing has at least one inlet for material to be separated, at least one coarse material outlet, as well as at least one first fine material outlet, wherein the separator wheel is formed by a separator drum and a separator wheel shaft, which supports the separator drum and preferably rotates around a horizontal axis, and the circumferential jacket surface of the separator drum is interrupted in such a way that it sets the material to be separated, which hits the separator drum on the outer jacket side, into rotation during operation and the separation air flows through it in the radially inwards direction, wherein the at least one fine material outlet is arranged on the end of the separator drum and fine material is discharged from the interior of the separator drum into the at least one fine material outlet via the free front face of the separator drum, wherein the separator wheel shaft consists of two parts, which are not directly connected to one another in a supporting manner, and the first part of the separator wheel shaft extends outwards from a wheel disk, which supports the separator drum in the area of its first front face, away from the separator drum, and the second part of the separator wheel shaft extends outwards from a wheel disk, which supports the separator drum in the area of its second front face, away from the separator drum.

A centrifugal separator including a separator housing and a separator wheel, which revolves in the separator housing, wherein the separator housing has at least one inlet for material to be separated, at least one coarse material outlet, as well as at least one first fine material outlet, wherein the separator wheel is formed by a separator drum and a separator wheel shaft, which supports the separator drum and preferably rotates around a horizontal axis, and the circumferential jacket surface of the separator drum is interrupted in such a way that it sets the material to be separated, which hits the separator drum on the outer jacket side, into rotation during operation and the separation air flows through it in the radially inwards direction, wherein the at least one fine material outlet is arranged on the end of the separator drum and fine material is discharged from the interior of the separator drum into the at least one fine material outlet via the free front face of the separator drum, wherein the separator wheel shaft consists of two parts, which are not directly connected to one another in a supporting manner, and the first part of the separator wheel shaft extends outwards from a wheel disk, which supports the separator drum in the area of its first front face, away from the separator drum, and the second part of the separator wheel shaft extends outwards from a wheel disk, which supports the separator drum in the area of its second front face, away from the separator drum.

A classifying device may be used to classify a granular material flow. The classifying device may comprise a first inlet that allows a first material flow into the classifying device, a second inlet that allows a second material flow into the classifying device, a static classifier, and a dynamic classifier. The static classifier may be positioned such that the static classifier at least partially surrounds the dynamic classifier. The classifying device may comprise a distributing device that is designed in such a manner that it supplies the material flow of the first inlet to the static classifier and the material flow of the second inlet to the dynamic classifier.

A classifying device may be used to classify a granular material flow. The classifying device may comprise a first inlet that allows a first material flow into the classifying device, a second inlet that allows a second material flow into the classifying device, a static classifier, and a dynamic classifier. The static classifier may be positioned such that the static classifier at least partially surrounds the dynamic classifier. The classifying device may comprise a distributing device that is designed in such a manner that it supplies the material flow of the first inlet to the static classifier and the material flow of the second inlet to the dynamic classifier.