Application of biodegradable oils to additive particles to control dusting. A method of reducing an amount of dust produced during transfer of additive particles comprising: treating at least some of the additive particles with one or more biodegradable oils; storing the additive particles; and transferring the additive particles prior to and after storage, wherein biodegradable oil reduces the amount of dust produced during at least one of the transfers of the additive particles.

Application of biodegradable oils to additive particles to control dusting. A method of reducing an amount of dust produced during transfer of additive particles comprising: treating at least some of the additive particles with one or more biodegradable oils; storing the additive particles; and transferring the additive particles prior to and after storage, wherein biodegradable oil reduces the amount of dust produced during at least one of the transfers of the additive particles.

A dust filtration unit for a frac sand storage bin and a method for using the same is disclosed. The dust filtration unit includes an adapter base adapted for attachment to an opened inspection hatch on the sand storage bin, a diffuser manifold attached to the adapter base, and a top plate of the diffuser manifold defining a plurality of filter bag orifices. Each of a plurality of filter bags is releasably attached to one of the plurality of filter bag orifices. In a non-limiting embodiment, the dust filtration unit further includes a hinge between the adapter base and the diffuser manifold, wherein the hinge rotatably attaches the adapter base to the diffuser manifold.

A dust filtration unit for a frac sand storage bin and a method for using the same is disclosed. The dust filtration unit includes an adapter base adapted for attachment to an opened inspection hatch on the sand storage bin, a diffuser manifold attached to the adapter base, and a top plate of the diffuser manifold defining a plurality of filter bag orifices. Each of a plurality of filter bags is releasably attached to one of the plurality of filter bag orifices. In a non-limiting embodiment, the dust filtration unit further includes a hinge between the adapter base and the diffuser manifold, wherein the hinge rotatably attaches the adapter base to the diffuser manifold.

A dust filtration unit for a frac sand storage bin and a method for using the same is disclosed. The dust filtration unit includes an adapter base adapted for attachment to an opened inspection hatch on the sand storage bin, a diffuser manifold attached to the adapter base, and a top plate of the diffuser manifold defining a plurality of filter bag orifices. Each of a plurality of filter bags is releasably attached to one of the plurality of filter bag orifices. In a non-limiting embodiment, the dust filtration unit further includes a hinge between the adapter base and the diffuser manifold, wherein the hinge rotatably attaches the adapter base to the diffuser manifold.

A method and apparatus that reduce release of dust generated during rotary dumping of rail cars in a dumping facility. The method includes removing dust laden air from a space bounded by a backside airflow diverter, a rotational frame, a first baffle and a second baffle while the rotational frame is rotating with a rail car by drawing the dust laden air through a secondary air intake that passes through the backside airflow diverter into a backside hood. A dust control apparatus includes a diverter, overlying a backside hood having a concave curved upper surface; and at least one secondary air intake positioned to pass through the diverter being located approximately where pressure in the backside hood remains neutral or negative relative to a pressure even there is a transient increase in air pressure in a lower portion of the backside hood.

A purpose of the invention is to provide a powder supply device having a dust collection unit to collect powdery dust released when powder is supplied from a lateral side, and having a space-saving and simplified structure. A powder supply device according to the present invention has a main body, a plurality of stockers and a dust collection unit. The stocker has a charge port and a supplier. The dust collection unit has a casing, an exhauster and a filtering member. The casing has a ceiling portion and a lateral side portion, with a side opposing said ceiling portion being opened to form a lid-shaped configuration. The lateral side portion has a notched portion into which the supplier is to be inserted. The filtering member is provided inside the casing and is positioned above the notched portion and below the ceiling portion in order to collect the powder.

Provided is a coal-containing wastewater spraying device for dust suppression during coal conveying, including a motor, a gland, a body seat, and an accelerator. The body seat includes a funnel-shaped cover, a first disc and a plurality of crushing plates. The accelerator includes a circular second disc. The end of an output shaft of the motor passes through the first disc to connect with the second disc. The cover is provided with a water retaining ring between the first disc and the second disc along its axial direction. The cover, the first disc, the second disc and the water retaining ring form a water inlet space.

A proppant delivery assembly receives and supports a plurality of containers having proppant stored therein. A cradle has a top surface which receives and supports the plurality of containers when positioned thereon. The cradle enables the plurality of containers to dispense the proppant stored therein. A proppant mover is positioned to underlie and extend along the top surface of the cradle aligned with the plurality of containers to receive proppant from the plurality of containers. The proppant mover carries proppant away from the plurality of containers. A chute is coupled to the cradle for receiving proppant from the proppant mover and directing the proppant to a blender hopper. A hood assembly is disposed at an end of the chute opposite the proppant mover for directing a vacuum air flow that removes a volume of air containing proppant dust particles directed from the chute. The hood assembly includes a curtain extending about a perimeter of the hood assembly and downward therefrom to at least partially define the volume of air being removed by the hood assembly.

A sprinkler system for a temporary chute used for disposal of construction materials during a construction or renovation project. The sprinkler system is releasably engaged with the temporary chute and is used to control dust within the chute, wash down the chute, and extinguish fires. A housing of the sprinkler system is releasably engaged with an intake hopper of the chute, placing an interior chamber of the housing in fluid communication with the chutes' tunnel. First and second sprinkler heads are located within the interior chamber. The first sprinkler head is temperature sensitive and automatically actuated when a threshold temperature is crossed. The second sprinkler head is manually activated by an operator to spray liquid into the tunnel to control dust or wash the interior surfaces of the chute. The sprinkler system and temporary chute are disengaged from the building once the construction or renovation project is completed.