A method and system for conveying material in a pneumatic material conveying system includes a material input point, a material conveying pipe connectable with a feed-in container, the system being configured to provide a pressure difference in the material conveying pipe that includes a partial-vacuum generator, and a separator device in which the transported material is separated from the transport air at an outlet end of the material conveying system. The material is conveyed in a first stage from the input point to a conveying pipe, into a container space of an intermediate container arranged between the input point and the separator device by a suction/pressure difference provided by the partial vacuum generator in a first time period, and the material conveyed into the container space of the intermediate container is conveyed by a suction/pressure difference provided by the partial-vacuum generator to the separator device.

The particularity of this invention is that the material is injected in the divergent section of the venturi. The innovative material Conveying Venturi tube consist of two parts: the main tube and the feeding tube injecting the material by gravity, at the end of the cylindrical throat into the diffusion section. The venturi is composed of a contraction section, a throat section, and a diffusion section. This device will convey distances exceeding 120 meters. The present invention permits multiple distances conveying by easily install another Conveying Venturi System at the end of the first conveying tube for extra length of conveying.

An ejection hood apparatus includes a transfer conduit and a hood. The transfer conduit includes a downwardly concave control shell. An inlet end portion of the transfer conduit receives an upwardly directed transfer air stream including ejected material with at least a partially upward trajectory. The hood defines an ejection chamber including a lower chamber portion and an upper chamber portion. The lower chamber portion receives the transfer air stream from an outlet end portion of the transfer conduit with at least a partially downward trajectory. The hood includes at least one air outlet passage communicated with the upper chamber portion for exhausting at least a portion of the transfer air stream.

An ejection hood apparatus includes a transfer conduit and a hood. The transfer conduit includes a downwardly concave control shell. An inlet end portion of the transfer conduit receives an upwardly directed transfer air stream including ejected material with at least a partially upward trajectory. The hood defines an ejection chamber including a lower chamber portion and an upper chamber portion. The lower chamber portion receives the transfer air stream from an outlet end portion of the transfer conduit with at least a partially downward trajectory. The hood includes at least one air outlet passage communicated with the upper chamber portion for exhausting at least a portion of the transfer air stream.

An apparatus for separating metal particles from a material stream of a bulk material, comprising a detection device for detecting metal particles in the material stream and a separating device configured to separate a portion of the material stream in which the metal particles are contained, the separating device comprising a housing having a material inlet, a good-material outlet and a bad-material outlet; a rotary piston rotatably mounted in the housing and configured to guide the material stream from the material inlet to the good-material outlet or to the bad-material outlet depending on the detection result of the detection device; a drive unit configured to position the rotary piston at least in a first and a second rotary position; wherein the drive unit is configured to rotate the rotary piston between the first rotary position and the second rotary position by an angle of rotation greater than 90.

An apparatus for separating metal particles from a material stream of a bulk material, comprising a detection device for detecting metal particles in the material stream and a separating device configured to separate a portion of the material stream in which the metal particles are contained, the separating device comprising a housing having a material inlet, a good-material outlet and a bad-material outlet; a rotary piston rotatably mounted in the housing and configured to guide the material stream from the material inlet to the good-material outlet or to the bad-material outlet depending on the detection result of the detection device; a drive unit configured to position the rotary piston at least in a first and a second rotary position; wherein the drive unit is configured to rotate the rotary piston between the first rotary position and the second rotary position by an angle of rotation greater than 90.

A system and method for loading material from a converter bed, such as that in a converter of an acid plant, is provided. The system, may include a vacuum source; a dust collector connected to the vacuum source by a first vacuum hose; a cyclone operatively connected to the vacuum source through the dust collector, wherein the cyclone may be connected to the dust collector by a second vacuum hose; a drop-out hopper operatively attached to the cyclone by a valve, such as an air actuated valve, wherein the drop-out hopper includes a first feed hose; and one or more material storage containers operatively associated with the cyclone via a second feed hose. The method of loading material into a converter bed may include providing a system for loading the material in the converter bed; setting up the system; and loading the material into the converter bed.

A system and method for loading material from a converter bed, such as that in a converter of an acid plant, is provided. The system, may include a vacuum source; a dust collector connected to the vacuum source by a first vacuum hose; a cyclone operatively connected to the vacuum source through the dust collector, wherein the cyclone may be connected to the dust collector by a second vacuum hose; a drop-out hopper operatively attached to the cyclone by a valve, such as an air actuated valve, wherein the drop-out hopper includes a first feed hose; and one or more material storage containers operatively associated with the cyclone via a second feed hose. The method of loading material into a converter bed may include providing a system for loading the material in the converter bed; setting up the system; and loading the material into the converter bed.

A method for temporary storage of granular material in a receiver having a horizontally elongated chamber within a housing, the chamber having a convex triangular cross-section and a dump flap defining a bottom vertex of the triangular cross-section, with a horizontal air/vacuum resin material inlet connecting to the chamber, and a horizontal air/vacuum outlet leading from and connected to the chamber.

A method for temporary storage of granular material in a receiver having a horizontally elongated chamber within a housing, the chamber having a convex triangular cross-section and a dump flap defining a bottom vertex of the triangular cross-section, with a horizontal air/vacuum resin material inlet connecting to the chamber, and a horizontal air/vacuum outlet leading from and connected to the chamber.