Reject Treatment Equipments
According to the different requirements of paper forming and the different configuration of main flow process,a more reasonable reject treatment scheme is provided to reduce the probability of paper breaking and paper defects,and improve the production efficiency and the quality of paper forming.(Reject treatment equipment)
Waste paper raw materials usually contain various types of light and heavy impurities.The presence of these impurities has many negative effects on the production process,such as:accelerated wear of pulping equipment and paper machines,increased consumption of spare parts,and improved paper breakage rate,Which reduces the quality of the paper and increases the production cost.Therefore,it is necessary to use various special reject treatment equipment to promptly discharge all kinds of light and heavy impurities from the system.
SELECTION OF REJECT PULP PROCESSING EQUIPMENT
The selection of cleaning system equipment should consider the following influencing factors:
Finished paper-types,cleanliness
Raw materials-type,characteristics,quality
Type of pulp-surface layer,core layer,bottom layer
Output-T/D
Main process equipment type
Where the tailings go
size of space
Float Purger(Reject treatment equipment)
Main Purpose
It is used in the coarse screening system to process the tailings of the coarse screen,to perform secondary deconsolidation of the unbroken paper sheets and fiber bundles,so that the fibers and impurities are fully stripped,and the light and heavy impurities are sent to the subsequent processing equipment.
Features
It has the high efficiency to disperse the paper and fiber bundle,and improves the production efficiency of the main process equipment.
Good fiber and impurity stripping ability,reduce the fiber loss rate.
The optimized shellstructure makes the center a the top ofthe shellform a low pressure area,which is conducive to the discharge of light slag from the top after the center is gathered, and improves the cleaning efficiency.
The independent heavy slag collection and discharge area avoids excessive wear of screen plate and impeller and excessive crushing of heavy slag.
The design of automatic cleaning can adjust the cleaning according to different impurity content, and the cleaning efficiency is high.(Reject treatment equipment)
Reject Sorter
Main Purpose
It is used at the end of the coarse system to separate the tail slag of the roughing system,wash the light impurities after the equipment in the front section is released,recover the fiber and discharge the light impurities.
Features
Fully closed operation,good sanitary conditions on site.
The structure of the blade has the function of partially releasing the paper that has not been completely released,which reduces the fiber loss rate.
For different raw materials,the blade layout can be flexibly adjusted to achieve the best impurity separation effect.
The cleaning effect of the blade on the screen plate makes the screen hole not easy to be blocked,so the screen hole can be made smaller to improve the quality of recycled pulp. (Reject treatment equipment)
Washing Drum
Main Purpose
It is used at the end of the coarse system to separate the tail slag of the roughing system,wash the light impurities fter the equipment in the front section has been dredged,recover the fiber and discharge the light impurities.
Features
Fully closed operation,good sanitary conditions on site.
There is no high-speed rotating parts inside,the washing process is soft,no damage to impurities,good pulp quality.
Drum structure,large working area,adequate impurity washing, low fiber loss rate.
Mobile spray washing device is equipped to prevent screen drum from blocking and easy to maintain.
Small power,nowearing parts,low operation cost.(Reject treatment equipment)
Combined Screen(Reject treatment equipment)
Main Purpose
It is used in the last stage of the coarse screening system to efficiently disperse the tailings of the coarse screen system,recover fibers and discharge light and heavy impurities.
Features
- Fully enclosed operation with good sanitary conditions on site.
- The design of the combination of impeller and rotor not only realizes the bottom impeller to efficiently dissolve the paper in the pulp,but also has the effect of the upper rotor fully washing the separated light impurities,so that tefiber in the tailings can be fully recvered and reduced. Fiber loss rate.
- Self-cleaning structure design,the screen drum is washed automatically when the motor load increases,to ensure the continuous and stable operation of the equipment.
- The feed concentration is high and the system energy consumption is low.
- The cleaning concentration is high, up to 30%,and the subsequent treatment is convenient.
Vertical Tailing Screen
Main Purpose
It is used in the last section of the cleaning system to recover the tail slag of the fine screening system again,so as to reduce the loss of fiber
Features
Long blade design,strong screening effect,strong backwashing, suitable for tailing screening.
Two independent screen drums can select different bar types and screen seam specifications according to the process conditions to realize two-stage screening and reduce fiber loss.
Set up an independent dilution water ring, cooperate with the design of the release block of the rotor,dilute and strongly release the tailings after the first stage screening, improve the fiber recovery rate of the second stage screening, and reduce the fiber loss. (Reject treatment equipment)
Horizontal Tailings Screen
Main Purpose
Used in the final stage of the fine screen system to recycle the tailings of the fine screening system again to reduce fiber loss.
Features
- The rotor structure adopts a combination of closed and open design,which fully agitates the tailings and is suitable for the screening of tailings.
- Two independent screen drums,different bar types and screen specifications can be selected according to the process conditions to achieve two-stage screening and reduce fiber loss.
- Set up an independent dilution water ring,cooperate with the second stage open rotor,further recover the fiber in a relatively soft state,improve the fiber recovery rate of the second stage screening and reduce the fiber loss while ensuring the quality of the good pulp.
Sand Water Separator
Main Purpose
Used in high-concentration cleaning system to separate slag and water discharged from high-concentration cleaning system, reuse white water,and transport heavy slag out.
Features
- Long blade design,strong screening effect,strong backwashing,suitable for tailing screening.
- Two independent screen drums can select different bar types and screen seam specifications according to the process conditions to realize two-stage screening and reduce fiber loss.
- Set up an independent dilution water ring,cooperate with the design of the release block of the rotor,dilute and strongly release the tailings after the first stage screening,improve the fiber recovery rate of the second stage screening,and reduce the fiber loss.
Solid-Liquid Separator
Main Purpose
Used in low-concentration cleaning system to concentrate the heavy slag discharged from the low-concentration cleaning system,which is convenient for heavy slag transportation.
Features
- Fully enclosed operation,good on-site sanitary conditions.
- Helical blades are welded with wear-resistant materials for long service life.
- The separation of heavy slag is more thorough,avoiding the need to manually clean the heavy slag pool,reducing the labor intensity.
- Adjustable slag discharge concentration,good adaptability to raw material types and heavy slag status.
- High slag discharge concentration,upto 35-50%,easy to transport.
Plastic Baler
Main Purpose
It is used in the pulping and coarse screening system to pack the light slag discharged from the pulping and coarse screening system,which is convenient for storage and transportation.
Features
- Fully automatic packaging reduces labor intensity.
- The dryness of packaging is high,>50%,which is convenient for storage and transportation.
- Various types of thrust cylinders are available for selection to adapt to
- different types of raw materials and output.
- The length of the package can be customized to facilitate storage and transportation.
- A variety of material bundling methods are available for selection,which is convenient for storage and transportation.
Grid Decontamination Machine
Main Purpose
Used in white water treatment system to pretreat the white water sent to the white water treatment system to remove various impurities such as plastics,wood chips,etc.
Features
- All stainless steel structure,corrosion-resistant.
- According to the different removal of impurities,various types of rake teeth and gaps can be customized,with high impurity removal rate and wide range of use.
- The self-cleaning function of the harrow teeth ensures that no impurities or jams are caught between the harrow teeth during continuous operation.
- High degree of automation,can be configured with PLC control cabinet to achieve regular operation or automatic operation according to the difference between the liquid level before and after the grid.
- According to the difference of the drainage ditch,the width and length of the grille can be customized,and the adaptability is good.
