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The HECHT containment drum discharge station with lance type CFE-L
is used for contamination-free discharging of
drums with inner liner up to OEB 5.
To ensure operator and product protection, the
products supplied in drums are additionally
packed in film also referred to as liner.
The product must be packed in at least
one liner.
Discharging of drums using the suction
lance is suitable in the case of limited
space or weight-controlled removal
of product.
In the case of loss-in-weight systems,
the operator takes the drum via the roller
conveyor directly underneath the glove box.
The drum is positioned by means of the lifting
device.
Then the operator fixes the outer liner at the double O-ring port using a
clamping ring. He removes the residues of the previous liner using the
gloves and temporarily stores them in the glove box.
The drum is then pressed against the gasket at the bottom of the glove box
and fixed using the lifting device. The inner liner (product liner) is opened,
stabilized with a ring and sealed by means of an inflatable seal.
In order to stabilize the liner and facilitate discharging, the area between
drum and outer liner is evacuated, preventing the liner from being sucked
in by the suction lance.
The drum is now connected, and the powder can be sucked out of the drum
by means of a lance and vacuum. The linear guiding of the suction lance
supports the easy handling during discharge. After the drum has been
emptied, the residues of the previous liner can be disposed of in the drum.
As soon as the outer liner has been loosened, the drum is closed by means
of the double closing system as already described.
The empty drum can then be removed and a new cycle can be started.

Video tutorial on the four different methods how to remove rust. Rust, also known as iron oxide is a chemical reaction between iron and oxygen or moisture that occurs on bare metal. Beyond steel, rust can also form on lower grades of stainless steel. It is very important to remove any rust from metal when applying a finish as it can jeopardize that finish by causing premature failure. The methods to remove rust are not limited to this video are beyond cleaning it by hand with just a wire brush, sandpaper, or an abrasive pad. Methods shown are mainly based for at home methods which can be done in the comforts of your own driveway.

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Tools/Supplies Needed:
-rust treatment (used in the video is Permatex Rust Dissolver Gel #80594)
-rubber gloves (used in the video is Permatex Black 5 mil Nitrile Disposable Gloves #08184)
-brush
-cup
-water
-white vinegar
-container
-abrasive pad
-sandblaster
-blasting media (glass bead, copper slag, walnut shells, steel shot, aluminum oxide, etc)
-air compressor
-safety glasses
-respirator
-drill
-angle grinder
-hand held sander
-rotary tool
-sanding disks or pads
-flap wheels
-wire wheels
-wire brush
-sandpaper
-grinding stone

Procedure:
Method #1
-using a store bought solution which is a form of rust treatment
-cleaning up any flaking paint, dirt, or loose rust using sandpaper or a wire brush
-shake the bottle to ensure the solution is mixed, poor into a cup or container, then applying using a brush or sponge
-do not allow it to come in contact with paint as it can cause damage
-it takes abut 15-20 minutes for the rust to be converted
-rinse with clean water
-allow it to dry and apply more coats if needed
-allow the metal to dry for 24 hours to ensure no moisture is trapped when applying a final finish
-this will neutralize old rust and prevent new rust from forming as well

Method #2
-using white vinegar and submerging the parts in a container
-clean up the piece slightly with either sandpaper or a wire brush
-allow it to soak for a day or two, depending on the severity of the rust
-once satisfied, rinse with water and give it a clean up using an abrasive pad
-ensure it has dried overnight so there isn’t any moisture trapped in the surface
-now you’re ready to apply a coating of your choice

Method #3
-using a sandblaster or some form of media blasting
-there is a variety of blasting equipment along with media available on the market
-normally a larger air compressor is required considering a sandblaster is a direct air loss
-this will remove the rust with minimal work, access any pitted areas as well, and strip areas to bare metal

Method #4
-using a mechanical method such as power tools
-there are a variety of tools that can be used such as a drill, angle grinder, hand held sander, rotary tool, etc
-with these tools, you will have a variety of attachments or options such as grinding disks, sanding disks, sanding pads, abrasive pads, wire wheels, grinding stones, flap wheels, etc
-in the video a hand held sander is used along with 180 grit sandpaper
-unfortunately due to the pitting, the sandpaper is unable to reach those lower areas
-sometimes an abrasive pad can tackle that, other times you will need to use a wire wheel

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