[OBJECT] To provide a fractionating device capable of stably fractionating powders such as cement raw materials by a simple configuration.

[SOLUTION] A fractionating device 1 for fractionating some of a powder (cement raw material) R falling in a chute (main body) 2, wherein the fractionating device is equipped with a screw conveyor 5 which passes through the chute, a part of a casing 5a opening inside the chute, and receives part of the powder from an opening (inlet) 5b, and a collision separation member (collision separation rod) 4 which is provided above the screw conveyor in the chute and collides with an object when an object of a predetermined size or larger falls, and prevents the object from falling directly onto the screw conveyor. A rotation shaft 5d of the screw conveyor may be inclined from 5° to 20° with respect to the horizontal plane so that the end of the discharge port side of the screw conveyor is positioned above the other end and may be equipped with a guide member 3 that guides the powder falling in the chute in the direction of the opening of the screw conveyor.

The present disclosure provides a shaft seal for a screw conveyor. The shaft seal includes a housing that includes an outboard frame plate and an inboard frame plate. The shaft seal also includes an outboard compression plate and an inboard compression plate situated between the outboard frame plate and the inboard frame plate. A least three sealing devices are situated between the outboard compression plate and the inboard compression plate with an annular recess at least partially formed along at least one of the inboard compression plate and the outboard compression plate.

A system of obtaining an aluminium melt including SiC particles for use when moulding vehicle parts, e.g. brake disks, the system comprises a pre-processing tank (2), configured to receive SiC particles and to apply a pre-processing procedure to pre-process the SiC particles; a SiC particle transport member (4) configured to transport the pre-processed SiC particles from the pre-processing tank (2) to a crucible (6) of a melting furnace device (8), and the melting furnace device (8) is configured to receive and melt solid aluminium, e.g. aluminium slabs, and to hold an aluminium melt (10) and to receive said pre-processed SiC particles (12). The system also comprises a tube-like SiC particle mixing arrangement (14) defining and enclosing an elongated mixing chamber (16), the mixing arrangement (14) is configured to be mounted in said crucible (6) and structured to receive into said mixing chamber (16) said pre-processed SiC particles (12) via a first inlet (18) and said aluminium melt (10) via at least one second inlet (20), and to apply a mixing procedure by rotating a rotatable mixing member (22) arranged in said mixing chamber (16) about said longitudinal axis A, wherein said pre-processed SiC particles are mixed together with the aluminium melt in said mixing chamber. The mixing arrangement (14) is provided with at least one outlet (26) to feed out the mixture from said mixing chamber into said crucible.

A system of obtaining an aluminium melt including SiC particles for use when moulding vehicle parts, e.g. brake disks, the system comprises a pre-processing tank (2), configured to receive SiC particles and to apply a pre-processing procedure to pre-process the SiC particles; a SiC particle transport member (4) configured to transport the pre-processed SiC particles from the pre-processing tank (2) to a crucible (6) of a melting furnace device (8), and the melting furnace device (8) is configured to receive and melt solid aluminium, e.g. aluminium slabs, and to hold an aluminium melt (10) and to receive said pre-processed SiC particles (12). The system also comprises a tube-like SiC particle mixing arrangement (14) defining and enclosing an elongated mixing chamber (16), the mixing arrangement (14) is configured to be mounted in said crucible (6) and structured to receive into said mixing chamber (16) said pre-processed SiC particles (12) via a first inlet (18) and said aluminium melt (10) via at least one second inlet (20), and to apply a mixing procedure by rotating a rotatable mixing member (22) arranged in said mixing chamber (16) about said longitudinal axis A, wherein said pre-processed SiC particles are mixed together with the aluminium melt in said mixing chamber. The mixing arrangement (14) is provided with at least one outlet (26) to feed out the mixture from said mixing chamber into said crucible.

A feed assembly for a melting chamber having a plurality of walls and at least one submerged burner, and related methods of its operation are disclosed. The feed assembly includes a tubular body being hollow and having a first end and extending to a second end. The second end is for connecting to one of the plurality of walls. The tubular body further includes a port proximate the second end wherein the port has a first port end and tapers radially inwardly to a second port end at the second end. The feed assembly also has a batch charger disposed within the tubular body and having a first charger end and extending to a second charger end.

A feed assembly for a melting chamber having a plurality of walls and at least one submerged burner, and related methods of its operation are disclosed. The feed assembly includes a tubular body being hollow and having a first end and extending to a second end. The second end is for connecting to one of the plurality of walls. The tubular body further includes a port proximate the second end wherein the port has a first port end and tapers radially inwardly to a second port end at the second end. The feed assembly also has a batch charger disposed within the tubular body and having a first charger end and extending to a second charger end.

A batch charger includes a barrel defining a direction X of charging a glass forming batch into the furnace, and a mechanical assembly provided with a member for conveying the batch to the furnace in the charging direction X, this conveying member being at least partially arranged in the barrel, and a motorized unit for driving the conveying member. The batch charger includes a mechanical assembly translatably mobile relative to the barrel, in the charging direction X.

A batch charger includes a barrel defining a direction X of charging a glass forming batch into the furnace, and a mechanical assembly provided with a member for conveying the batch to the furnace in the charging direction X, this conveying member being at least partially arranged in the barrel, and a motorized unit for driving the conveying member. The batch charger includes a mechanical assembly translatably mobile relative to the barrel, in the charging direction X.

The invention relates to a material feeding system (1) for a melter comprising: (i) a substantially horizontal feeding barrel (5) designed to feed solid material through the melter wall (9) into the melt (11) contained in the said melter, and arranged below the level (13) of the melt (11) contained in the melter (30), (ii) said feeding barrel (5) comprising a material input opening (15) and material output opening (17), the material output opening (17) leading into the melt (11) contained in the melter (30), said feeding barrel (5) comprising an internal feeder (20) designed to push solid material (7) loaded through the material input opening (15), in the direction of the longitudinal barrel axis (6) toward the material output opening (17), the end of the internal feeder (20) on the material output side extending at a minimum at a distance from the internal melter surface (19) of two (2) to ten (10) times the diameter of the feeding barrel (5), preferably three (3) to eight (8) times the diameter of the feeding barrel, more preferably three (3) to six (6) times the diameter of the feeding barrel or three (3) to five (5) times the diameter of the feeding barrel (5). The invention further covers a submerged combustion melter equipped with above material feeding system and a process for feeding material into a melter.

The invention relates to a material feeding system (1) for a melter comprising: (i) a substantially horizontal feeding barrel (5) designed to feed solid material through the melter wall (9) into the melt (11) contained in the said melter, and arranged below the level (13) of the melt (11) contained in the melter (30), (ii) said feeding barrel (5) comprising a material input opening (15) and material output opening (17), the material output opening (17) leading into the melt (11) contained in the melter (30), said feeding barrel (5) comprising an internal feeder (20) designed to push solid material (7) loaded through the material input opening (15), in the direction of the longitudinal barrel axis (6) toward the material output opening (17), the end of the internal feeder (20) on the material output side extending at a minimum at a distance from the internal melter surface (19) of two (2) to ten (10) times the diameter of the feeding barrel (5), preferably three (3) to eight (8) times the diameter of the feeding barrel, more preferably three (3) to six (6) times the diameter of the feeding barrel or three (3) to five (5) times the diameter of the feeding barrel (5). The invention further covers a submerged combustion melter equipped with above material feeding system and a process for feeding material into a melter.