
- Construction year: 1993 – 1994, many parts from 2002 – 2004
- Manufacturers: Black Clawson, Comer, Inox BF, RSM
- Raw material: Mixed waste paper
- Tension and frequency at mill: 380 V – 50 Hz
- Stock preparation system drive: AC
- Total production capacity: 200 BDTPD.
- Status of the machinery:
- Completely disassembled and stored (some parts removed)
- Properly documented and machmarked.
- Motors: available
- Stainless steel tanks: scrapped
- Piping: scrapped
- Valves: available
- Spare parts: available
- Stock pumps: available
- Control system: not available
As part of the deal we offer discussion with our technology experts (free of charge), in order to adjust
the design of the line (for example coarse screening part) according to clients needs.
Detailed description of the machinery
Pulping and de-trashing
The „Black Clawson“ Hydra-pulper of 28 m³ (F50 type) in AISI 316 stainless steel material and installed power of 200 kW (7 kW/m³) is loaded with mixed waste paper by a belt conveyor („Meri costruzioni“, length of 15 m, width of 1.4 m and 16% slope ) and water forming a slurry of medium consistency (5.0 – 6.0% TSS) which is continuously discharged after up to 16 minutes pulping time through the perforated plate (10mm holes) and extraction chamber. The accepted stock is then pumped to the dumping chest of 90 m³ (in concrete, with „RCM“ agitator AT 800 type, installed in 2001) whilst solid contaminants separated by the perforated plate of the pulper are pumped into the „RCM“ Select-purge TSP 1300 type (installed in 2000) having perforated plate of 20 mm diameter and operating in batch mode. The accepted stock from the Select-purge machinery is pumped back to the pulper whilst its rejects are treated by the „Inox BF“ inclined Ecodrum (trommel) whose function is to recover valuable fibres (back to pulper). Contaminants from Trommel are further dewatered by a „Inox BF“ hydraulic compacting press.
Finally, the pulping system works in a continuous/batch mode in accordance with the quantity of heavy contaminants filling the pulper that must be removed.
Some parts of the conveyor transferring the waste material into the pulper, in particular the side panels, have been scrapped due to their critical mechanical conditions.
High consistency cleaning
The stock from the concrete chest of 90 m³ is then pumped into (4) „RCM“ high consistency cleaners D200 type having automatic discharging system and working at a TSS consistency of around 3.5 – 4.0% (up to 5.0%). This equipment is particularly suited to eliminate heavy contaminants such as pieces of glass, metal and stones. The accepted stock is transferred to a stainless steel chest of 110 m³ equipped with „RCM“ agitator (AT 800 type) placed in 2003.
Coarse screening
The coarse screening plant is composed of (2) equipment working in parallel mode: (1) Ultra-screen „Black Clawson“ working at medium consistency (3.0 – 4.0% TSS), installed power of 90 kW, with basket having holes (installed in 1994); (1) „RCM“ Turbo-separator TRB 1200 type equipped with basket having holes (installed in 2002). The rejected stock from the two lines goes into a concrete chest of 35 m³ which feeds the „RCM“ Rotocleaner TS 1000 type and whose accepted stock returns back into the pulper whilst the rejected is treated by a „RCM“ vibrating screen . The accepted stock from the two pressure screens is collected in (2) concrete chests of 90 m³ each (1995).
A third chest of 90 m³ in concrete is used to pump the trims and breaks directly to inclined screw
thickeners feeding the mixing chest of 250 m³.
Fine screening
The accepted stock from the coarse screening plant is transferred to (2) medium consistency pressure screens working in parallel mode: (1) „Comer“ EC10 type having installed power of 90 kW and slotted basked (2001) and (1) „Comer“ EC20 type having installed power of 160 kW and slotted basket (2000). The rejects from the two pressure screens are transferred to the „Comer“ EC5 pressure screen having basket with slots (2001) through a concrete chest of 45 m³. The accepted stock from the EC5 returns back to the pulper whilst the rejected is treated by a vibrating screen. The cleaned stock from EC10 and EC 20 pressure screens is collected in the concrete mixing chest of 250 m³ which feeds machine chest. It should be noted that „Comer“ EC5 type screen has been found in bad mechanical conditions and that, therefore, it has been scrapped. We can offer suitable replacement from our magazine in same or better quality.
Spare parts of stock preparation equipment
- impeller and perforated plate of „RCM“ select-purge TSP 1300 type
- basket for „RCM“ Rotocleaner TS 1000 type;
- impeller for „RCM“ Turbo-separator TRB 1200 type;
- rotor for „Comer“ pressure screen EC20 type;
- rotor for „Comer“ pressure screen EC10 type;
- rotor for „Comer“ pressure screen EC5 type;
- baskets for „Comer“ pressure screen EC20 type;
- baskets for „Comer“ pressure screen EC10 type;
- baskets for „Comer“ pressure screen EC5 type;
- basket for Ultra-screen „Black Clawson“.