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Paper mill equipment
ZTR rotary cutter
ZTR rotary cutters are machines of compact and robust mechanical construction. The hollow rotor carries an interchangeable double blade with tungsten carbide inserts and generates a scissor type cutting action.
hey are used in mill industries for breaking up tough shavings in extraction systems, typically plastic films, polyethylene, bonded papers and adhesives, aluminium foils, etc.
Also available in lower cost versions for corrugated cardboard and ordinary paper.
ZC chopper fans
ZC chopper fans are rugged machines built from heavy gauge sheet steel, used for extracting, cutting and air-conveying process waste in continuous cycle, typically paper, cardboard, swarf from synthetic materials, aluminium foils, etc.
They are equipped with a special adjustable inlet port and a rotor with reinforced open blades carrying double-edged hardmetal cutters.
Models:
- Compact version
- Skid-mounted version
Materials used in construction:
- Carbon steel
- Wear resistant steel
- Stainless steel
- Hot dip galvanization
Drive systems rated 3 to 75 kW.
ZSG grate separators
ZSG grate separators are static components used in air-conveying systems handling light scrap material such as paper, cardboard, plastic film, aluminium foil, etc. to separate the material from the air stream.
The benefits of simple construction and operation are evident in compact dimensions — even for high air flow rates — and ease of installation. In addition, the design guarantees low pressure losses in the circuit, and consequently minimal energy consumption.
Various models are available, with a number of different accessories, including:
- Multiple inlet with non-return valve
- Separated air take-up fan
- Purification filters for separated air
- Motorized rotary valve on separated material outlet
- Automatic bypass on material outlet.
ZTR pulpers
ZTR pulpers are solidly built machines that comprise a pulping chamber and two shafts turning at different speeds, carrying pulping rotors equipped with interchangeable blades of hardened steel or tungsten carbide.
These machines are especially versatile, given their ability to pulp a wide range of materials including paper, cardboard, expanded plastics, textiles, particleboard, etc., whether for immediate recycling or more manageable storage.
Various sizes are available, with inlets from 1000 mm to 3000 mm wide.
Materials for pulping can be fed in manually, or using chutes, or conveyor belts, or indeed any other convenient feed system.
Pulped material can be removed forcibly by extraction, and transferred to the storage location by means of air-conveying systems.
Scrubber
The scrubber is a pollution control system that uses a liquid (generally water, or an aqueous solution containing an additive) to separate particulates, gases and vapours from an air stream.
The removal of these components is brought about essentially by impact of the atomized scrubbing liquid on the entrained particulates and pollutants.
To this end, the air is directed at low velocity into a vertical duct (spray tower), passing through fixed or movable spray sections supplied with water by a pump connected to the tank.
A droplet separator positioned at the top of the tower eliminates water entrained in the air flow, so that the air released into the atmosphere is thoroughly filtered.
The scrubbing liquid is recycled continuously, dropping into the tank after it has been atomized: the airborne pollutants (in the case of particulates) are collected in the tank with the liquid and settled, before being disposed of as a slurry or in suspension.
The system can operate continuously if necessary, without any interruption other than for periodic maintenance.
This type of pollution control is characterized by high efficiency and low operating costs, and suitable for all types of pollutants provided that they are wettable, or able to react with an additive soluble in water.
