Different tanker shapes

They haul molten aluminum this way too...

 

The liquid components of asphalt are hauled in straight barrel tankers insulated with a fiberglass wrap before the outer stainless steel is installed. If the load cools too much for unloading, the tank has an internal pipe through which steam can be pumped to warm it up. Hoses that solidify can be lowered into a hot load until they "thaw". All in all, it is messy work. Refineries and asphalt plants use external pumps to unload deliveries.

Molten aluminum is hauled in vertical steel tanks lined inside with fire brick and ceramic "mud". The aluminum is shipped at 1,600 degrees and will retain sufficient temperature for unloading for about eight hours, in winter. If the temperature falls below 1,000 degrees, a casting plant may refuse the load because it would lower the temperature of their furnaces. Molten aluminum is poured into the top of a crucible and the eight foot diameter lid is bolted on with an asbestos gasket in place. Unloading involves pulling a cone-shaped plug with asbestos sock at the base of the crucible. The driver bolts a steel spout to the crucible and assembles a chute similar to that used to deliver concrete. Aluminum is gravity unloaded, and truck may be raised on a hoist for this process. The work is relatively clean although drivers wear welder's leather protective jackets, gloves, chaps, and spats.

 

Most gas tankers are baffled , whereas most milk/water tankers are not.

Diesel: 7.4 pounds per gallon

Gas: 6.1 pounds per gallon.

Milk/Water: 9.1 pounds per gallon.

Propane tankers are not often baffled, as its only 4.2 pounds per gallon, but that's not a given. It all depends on the law and the owners specs.

 

While looking for a picture of an aluminum crucible, I ran across these pictures... http://www.hankstruckpictures.com/larry_heyns.htm

Yours?

 

most bottles I have dealt with are baffled and it sucks if you have one that isn't as you can only fill to about 80%

 

I've worked with chemical tankers before that must maintain a certain temperature or the product crystalizes. The tanker has a jacket on it similar to a tanker inside a tanker and hooks to the trucks cooling system. You hook your airlines up and two cooling lines up and open the handles. There's a thermocoupler that opens and closes to control the heat.

Water weighs 8.34 lbs/gal. Milk is heavier from the solids in it.

 

Yes. I worked under P.I.E. authority hauling molten aluminum out of Alreco, former Michigan Standard Alloys smelter in Benton Harbor. Matlack purchased the bulk authority of P.I.E., and we changed the signs on the trucks. Matlack gave up the contract when Stanage Trucking made a lower bid. Stanage did not offer competitive pay, so I changed employers in 1985.

 

Called in-transit heat Condo and its a billable item. FYI

 

what does it mean for a tank to be double conical? what is conical mean in reference to tanks?

 

and it works, one of our guys tried to avoi a car, rolled a tanker of fuel over( diesel). They did not loose any product, until they started to transfer it. But at least it was containable then.