A classifier including a housing to take in air flow from below into a radially outer region of an inside space; a flow deflection portion to deflect the air flow toward a center axis of the housing; and an annular rotational portion disposed rotatably in a radially inner region positioned on a radially inner side of the radially outer region, of the inside space of the housing, and configured to classify particles which accompany the air flow. The annular rotational portion includes a plurality of rotational blades arranged at intervals around a rotational axis of the annular rotational portion. The plurality of rotational blades form an outer shape of the annular rotational portion forms an angle of not greater than 75 with a segment extended in a horizontal direction from the annular rotational portion outward in a radial direction, in a side view of the annular rotational portion.

A method and apparatus are provided for processing whole tobacco plants. The method includes cutting the whole tobacco plants into segments in a segmenter assembly, classifying the segments by leaf characteristics, separating leaf material from a waste material stream of undesirable stalk and shatter material for each class of leaf characteristics and reclaiming portions of leaf material trapped in the waste material and recycling the reclaimed portions of leaf material to the segmenter assembly. The apparatus includes a stalk segmenter assembly, a processor assembly, a plurality of cleaning conveyor modules and a cyclonic separator system to reclaim small bits of leaf from the waste stream and return them through a rotary airlock to the segmenter assembly for reprocessing.

A method and apparatus are provided for processing whole tobacco plants. The method includes cutting the whole tobacco plants into segments in a segmenter assembly, classifying the segments by leaf characteristics, separating leaf material from a waste material stream of undesirable stalk and shatter material for each class of leaf characteristics and reclaiming portions of leaf material trapped in the waste material and recycling the reclaimed portions of leaf material to the segmenter assembly. The apparatus includes a stalk segmenter assembly, a processor assembly, a plurality of cleaning conveyor modules and a cyclonic separator system to reclaim small bits of leaf from the waste stream and return them through a rotary airlock to the segmenter assembly for reprocessing.

The invention relates to the method for milling and separation into fractions of solids and granular materials in a controlled airflow. The device for milling and separation of solids and granular materials consists of a round milling chamber with a system of pneumatic separation comprising of a vertical cylindrical body that has an uploading slot for solids and granular materials and unloading channels for the milled products of light, medium and coarse fractions. A rotating disc and a conical divider are located inside a vertical cylindrical body. The rotating disc has plates (hammers) and removable blades of different sizes and configurations. System of pneumatic separation consists of a milling chamber, an air slugcatcher, channels for the milled material, and a chamber of higher pressure. Such construction of the device allows to obtain products of a highest quality, and to improve the separation by dividing the material into three fractions: light, medium and coarse.

The invention relates to the method for milling and separation into fractions of solids and granular materials in a controlled airflow. The device for milling and separation of solids and granular materials consists of a round milling chamber with a system of pneumatic separation comprising of a vertical cylindrical body that has an uploading slot for solids and granular materials and unloading channels for the milled products of light, medium and coarse fractions. A rotating disc and a conical divider are located inside a vertical cylindrical body. The rotating disc has plates (hammers) and removable blades of different sizes and configurations. System of pneumatic separation consists of a milling chamber, an air slugcatcher, channels for the milled material, and a chamber of higher pressure. Such construction of the device allows to obtain products of a highest quality, and to improve the separation by dividing the material into three fractions: light, medium and coarse.

A method and apparatus are provided for processing whole tobacco plants. The method includes cutting the whole tobacco plants into segments in a segmenter assembly, classifying the segments by leaf characteristics, separating leaf material from a waste material stream of undesirable stalk and shatter material for each class of leaf characteristics and reclaiming portions of leaf material trapped in the waste material and recycling the reclaimed portions of leaf material to the segmenter assembly. The apparatus includes a stalk segmenter assembly, a processor assembly, a plurality of cleaning conveyor modules and a cyclonic separator system to reclaim small bits of leaf from the waste stream and return them through a rotary airlock to the segmenter assembly for reprocessing.

A glass powder production process for producing glass powder with a grain size <40 m includes feeding a fine mill with glass cullet and dry grinding the glass cullet in the fine mill, feeding the crushed glass cullet into an air classifier and air classifying the crushed glass cullet into a fine material fraction and a coarse material fraction, wherein the separation limit of the air classifier is set to a grain size <40 m, discharging the coarse material fraction from the air separator, preparing the coarse material fraction for refeeding into the fine mill, refeeding the coarse material fraction into the fine mill, outputting the fine material fraction as the end product, the glass powder. The disclosure also relates to a glass powder production device suitable for carrying out the process.

A glass powder production process for producing glass powder with a grain size <40 m includes feeding a fine mill with glass cullet and dry grinding the glass cullet in the fine mill, feeding the crushed glass cullet into an air classifier and air classifying the crushed glass cullet into a fine material fraction and a coarse material fraction, wherein the separation limit of the air classifier is set to a grain size <40 m, discharging the coarse material fraction from the air separator, preparing the coarse material fraction for refeeding into the fine mill, refeeding the coarse material fraction into the fine mill, outputting the fine material fraction as the end product, the glass powder. The disclosure also relates to a glass powder production device suitable for carrying out the process.