Shredding process

Burns and Roe Modified reverse assembly. Plasma arc. Plasma arc. Melted in plasma arc. Shredded processed in plasma arc. 

Ammonium Perchlorate (or other oxidizer) and fuel from binder The oxidizer is usually w-soluble. The oxidizer extm process is efficiently performed with the cooling w used to cool the proplnt grains during the shredding process. The oxidizer is then recryst and reused. The inert binder and metal fuel are further separated for the purpose of recovering the metal either before or after incineration 33... 

The RDF production using the two-stage shredding process and the product RDF had many disadvantages ... 

The shredding process results in exposure of steel belt fragments along the edges of the tire shreds... 

Because of the higher value of nylon resin in comparison with other polymers used in carpet, nylon carpet has been looked at as a resource for making virgin nylon via depolymerization. The majority of polyamides used commercially are nylon 6,6 or nylon 6, and the largest supply of waste for recycling of nylons is obtained from used carpets. The waste carpets are collected, sorted, and then subjected to a mechanical shredding process before depolymerization. 

Carpet waste for soil and concrete reinforcement requires only a simple and inexpensive shredding process. For soil applications, virtually all types of carpet are suitable, and therefore sorting is not necessary. For concrete reinforcement, only nylon and polypropylene carpet should be used. It is also possible to mechanically remove nylon face fibers from a nylon carpet to produce nylon resins and use the less-valuable residual, composed of mostly polypropylene backing, for concrete and soil reinforcement. 

When plastics progress beyond separate components or minor parts of sub-assemblies, they run into a different order of problem the problem of being incompatible with existing motor industry practices. This concerns not only the birth of the vehicle, but also its demise not only its construction, but also the stripping and shredding processes. 

The blanket of alk-ceU leaving the slurry press is shredded, and if necessary cooled, before being conveyed to mercerizing (the ripening or aging process). 

Kutrieb Corporation (Chetek, Wisconsin) operates a pyrolator process for converting tires into oil, pyrolytic filler, gas, and steel. Nu-Tech (Bensenvike, Illinois) employs the Pyro-Matic resource recovery system for tire pyrolysis, which consists of a shredding operation, storage hopper, char-coUection chambers, furnace box with a 61-cm reactor chamber, material-feed conveyor, control-feed inlet, and oil collection system. It is rated to produce 272.5 L oil and 363 kg carbon black from 907 kg of shredded tires. TecSon Corporation (Janesville, Wisconsin) has a Pyro-Mass recovery system that pyroly2es chopped tire particles into char, oil, and gas. The system can process up to 1000 kg/h and produce 1.25 MW/h (16). 

In 1985, the Emanuel Tire Company in Baltimore processed more than 3 x 10 tires into chips, which are mostly sold to pulp and paper mills as a supplemental fuel the remainder is sold to reclaiming facHities or landfiUed. Only 20% of passenger tires are suitable for recapping. Nonrecappable tires are shredded into 5-cm chips. The Emanuel Tire operation is capable of reducing the 5-cm chips to smaller sizes. Shredded waste tire chips can be granulated into very fine wire and fabric-free mbber particles. 

Several utihties are burning or have successfully test-burned I DE. Eor example, the results of a pilot project at Wisconsin Power Light (WP L) were so successful that the utihty installed its own system to shred tires, thereby assuring a steady supply of uniformly sized tire chips. The tire processing plant will enable the utihty to manage about 20% of the 5 x 10 waste tires generated each year in Wisconsin. 

In the wood rosin process, rosin is isolated from aged pine stumps that have been left in fields cleared for farming or lumbering operations. The stumps are cut and shredded to pieces the size of matchsticks. The wood chips are then extracted with an appropriate solvent, eg, aUphatic or aromatic petroleum hydrocarbons or ketones. The extract is fractionally separated into nonvolatile cmde rosin, volatile extractibles, and recovered solvent. The dark rosin is usually refined further to lighter-colored products using selective solvents or absorption. 

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