Hopper rail car

It was determined that two major advantages of the RP covered hopper rail car are its tare weight and its corrosion resistance. As a result of its significantly lower weight and large size, the car is capable of carrying... 

Railroads generally do not supply tank cars and other special-purpose rail cars such as covered hopper cars for the movement of bulk plastic materials. Rather, shippers or receivers must furnish such equipment, usually through a purchase or lease arrangement with car manufacturers or lessors. 

The negative system usually sucks on a cyclone and/or filter/receiver mounted above the receiving storage hopper or bin. Solids are usually sent down to the hopper with a rotary air lock feeder. Air is sucked into the transfer pipe or duct at the pickup end of the sy.stem. A variety of feeders can be used to introduce solids into the flowing air stream such as rotary air lock feeders, pan-type manifolds under rail car hoppers, paddle-type rail car unloaders, screw conveyors, etc. 

The extent to which plastics are used in any industry in the future will depend in part upon the continued total R D activity carried on by materials producers, processors, fabricators, and users in their desire to broaden the scope of plastic applications. An R D example is the rail car hopper, called the Grasshopper (10,14). It is literally all plastic that provides improved load and operating performances over metals (Fig. 10-11). ... 

With such massive movements, the availability of hopper cars to deliver to the port became an increasing issue. In 1976, Sultran was formed by the sulfur producers to operate the rail fleet, manage the bulk sulfur movements by hopper cars to Vancouver, and to negotiate rail rates. In 1981, Sultran added 680 rail cars to their fleet to expedite the shipments of sulfur to Vancouver and purchased PCT in Port Moody from Cominco. Pacific Coast Terminal (PCT) is one of two sulfur terminals in the Vancouver area the other is Vancouver Wharves (purchased by BC Rail in 1993 taken over by Kinder Morgan in 2007). PCT dredged their berth to accommodate Panamax-sized vessels in 1995. 

Railroad Cars. Aluminum is u in the construction of railroad hopper cars, box cars, refrigerator cars, and tank cars. Aluminum is also used extensively in passenger rail cars for mass transit systems. 

Large quantities of pelletized HDPE are shipped by rail in hopper cars with a capacity of 80—100 t. Smaller orders are distributed in cormgated cardboard boxes (1.0 X 1.2 x 0.9 m) with a capacity of 450—500 kg of resin. 

Shipment and Storage. Anhydrous sodium sulfite is suppHed in 22.7- and 45.4-kg moistureproof paper bags or 45.4- and 159-kg fiber dmms. Most sodium sulfite is shipped by rail in hopper cars. Sodium sulfite should be protected from moisture during storage. When dry it is quite stable, but when wet it is oxidized by air. 

In a typical process the finely divided dry crystals are compacted under heat and pressure in a roU press into briquettes having a density of 1.550 to 1.590. The briquettes are passed to a rotary screen where the fins, thin layers of material attached to the periphery of the briquette centerline, are removed and reprocessed. The finished briquettes pass into large storage bins from where they are loaded into rail-hopper cars or shipping bins or packaged into dmms and other shipping containers. 

Another important factor in the availability of coal is an adequate supply of transportation facilities, particularly railroad hopper cars. There is little or no storage at the mines except for unit train shipments, so mines generally cannot operate without an adequate supply of coal cars, wluch determines the number of days of active mine operation. Because of the close a Bnity of coal and rail transportation, the deterrents to expanded coal productive capacity also affect the development of new transportation facilities. Of considerable importance in the future will be an increase in the number of unit trains, which help to reduce transportation costs and the potentials for more coal slurry pipelines and for mine-mouth generating plants for the extra-high-voltage transmission of coal-produced electricity. 

Rail freight car means a car designed to carry freight or nonpassenger personnel by rail, and includes a box car, flat car, gondola car, hopper car, tank car, and occupied caboose. 

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