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Recycling process of waste paper pulping tailings

A technology of tailings and pulping, which is applied in the direction of textiles, papermaking, and fiber raw material treatment, can solve the problems of waste paper pulping tailings pollution, etc., and achieve the effect of economic promotion of environmental protection and sustainable development

Active Publication Date: 2019-01-04
LIANSHENG PAPER IND LONGHAI
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Problems solved by technology

[0003] For this reason, it is necessary to provide a recycling process for waste paper pulping tailings to solve the problem of waste paper pulping tailings pollution

Method used

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  • Recycling process of waste paper pulping tailings

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Embodiment Construction

[0017] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0018] see figure 1 , the present embodiment provides a recycling process for waste paper pulping tailings, comprising the following steps:

[0019] Separation: Use the bouncing screening machine to sort the tailings into coarse and heavy slag, fine slag and tailings. The model of the bouncing screening machine is ReBal40, the sieve aperture is 80mm, and the processing capacity is 12.5t / h; the tailings are directly collected from the bouncing screening machine The sieve leaks to the bottom of the bouncing screening machine, the coarse and heavy slag is at the low end of the screen, and the tailings are at the high end of the screen. A conveyor is installed below the bouncing screening machine for conveying coarse and heavy slag, fine ...

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Abstract

The invention relates to a recycling process of waste paper pulping tailings, which includes the following steps: separation: separating tailings to obtain coarse heavy slag, fine slag and tail slag;treatment of the coarse heavy slag: separating wood and construction waste from the coarse heavy slag by manual sorting, separating metal iron from the coarse heavy slag by an iron remover, transporting the remaining waste into a near infrared optical sorter, sorting out plastic in the remaining waste, and performing packaging; treatment of the fine slag: mixing the fine slag with water to obtainfine slag slurry, injecting the fine slag slurry into a friction cleaner for cleaning, performing solid-liquid separation on the fine slag slurry after cleaning by the friction cleaner, and removing metal and sand particles from the separated precipitate by using a high-concentration slag remover; and treatment of the tail slag: shredding the tail slag, discharging the shredded tail slag into a clean sedimentation tank for solid-liquid separation, and screening out solid waste residue from the separated clear liquid. The process does not cause secondary pollution to the environment, and can promote the construction of the green, environment-friendly and sustainable economy.

Description

technical field [0001] The invention relates to the field of papermaking technology, in particular to a recycling technology of waste paper pulping tailings. Background technique [0002] Recycled waste paper can be properly processed to obtain qualified pulp for the production of paper products. During the pulping process of waste paper, tailings will be generated. The main components of tailings are: plastics, metals, construction waste, and bamboo wood. Waste paper pulping and papermaking itself is a process of resource utilization, but the tailings generated in the process will cause secondary pollution to the environment, which has greatly hindered the construction of a green, environmentally friendly and sustainable economy. Contents of the invention [0003] For this reason, it is necessary to provide a recycling process for waste paper pulping tailings to solve the problem of waste paper pulping tailings pollution. [0004] In order to achieve the above object, th...

Claims

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Application Information

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IPC IPC(8): D21D5/02
CPCD21D5/02
Inventor 蒋宗植吴江楠薛荣军叶永平李浩
Owner LIANSHENG PAPER IND LONGHAI