National Recovery

NRS, National Recovery Systems 5222 Indianapolis Boulevard East Chicago, IN 46312, USA... 

Another example is a system made by National Recovery Technologies (NRT) Inc. (Nashville, TN) [72]. This apparatus incorporates a proprietary electromagnetic screening process that also detects the presence of chlorine as found in PVC bottles. Once detected, PVC bottles are pneumatically jettisoned from the commingled bottle feed stream by a microprocessor-based air-blast system. The NRT technology permits bottles to be delivered to the unit in a mass sort concept in either crushed or whole form. This system does not require any special positioning or orientation of the bottles in order to achieve high efficiency rates. 

Figure 3.5 National Recovery Technologies Vinyl Separation System...

The only systems used on an industrial scale so far are believed to be based on X-ray and IR, mainly for bottles, since the high cost of PET providing an incentive. X-ray absorption systems are made by National Recovery Technologies, USA, and Giovani, Italy. X-ray fluorescence detectors are made by Magnetic Separation Systems (MSS) and Asoma Instruments, both of the USA. 

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