OCC deslagging process for processing kraft box board paper

Abstract

The application provides OCC deslagging process for cowhide carton paper processing. The OCC deslagging process for cowhide carton paper processing improves the quality and performance of cowhide carton paper by deslagging the recycled OCC raw material in the production process of cowhide carton paper, and comprises the following steps: S1 raw material conveying process: conveying the recycled OCC raw material to the feed inlet of the deslagging system through a conveying belt; S2 rough selection deslagging process: in the conveying process, the rough selection deslagging device arranged above the conveying belt is used to preliminarily remove the metal, stone and glass coarse impurities in the OCC raw material. The OCC deslagging process for cowhide carton paper processing has the advantages of convenient use, significantly improved quality of the recycled OCC raw material through multi-stage selection, purification and dust removal treatment, and thus improved performance of the cowhide carton paper. In addition, the process also has the advantages of effectively reducing waste in the production process, reducing production cost and improving production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slag removal, and particularly relates to an OCC slag removal process for kraft liner paper processing. BACKGROUND

[0002] In the paper industry, kraft liner paper is a commonly used packaging material due to its good strength, resistance to breaking and water resistance. The main raw material of kraft liner paper is recycled paper fiber, among which old corrugated container (OCC) is an important fiber source. However, OCC may mix with various impurities such as metal, stone, glass, etc. during the recycling process, which will affect the quality and performance of kraft liner paper.

[0003] Traditional OCC processing methods mainly include screening, magnetic separation and cleaning, but these methods have low efficiency and unsatisfactory removal effect. For example, the screening and magnetic separation methods can only remove part of the impurities in OCC, and it is difficult to remove fine impurities and dust; while the cleaning method can remove part of the impurities, but it is easy to damage the paper fiber and affect the quality of kraft liner paper.

[0004] Therefore, it is necessary to provide a new OCC slag removal process for kraft liner paper processing to solve the above technical problems. SUMMARY

[0005] The technical problem solved by the present application is to provide an OCC slag removal process for kraft liner paper processing, which significantly improves the quality of recycled OCC raw materials through multi-stage sorting, purification and dust removal treatment, thereby improving the performance of kraft liner paper. In addition, this process also effectively reduces waste during production, reduces production cost and improves production efficiency.

[0006] To solve the above technical problems, the OCC slag removal process for kraft liner paper processing provided by the present application removes slag from the recycled OCC raw materials during the production process of kraft liner paper to improve the quality and performance of kraft liner paper, including the following steps:

[0007] S1 raw material conveying process: conveying the recycled OCC raw materials to the feed inlet of the slag removal system through the conveying belt;

[0008] S2 rough selection slag removal process: during the conveying process, the rough selection slag removal device is set above the conveying belt to preliminarily remove the metal, stone, glass and other large impurities in the OCC raw materials;

[0009] S3 sorting slag removal process: conveying the rough selected OCC raw materials to the sorting slag removal device, and further removing the fine impurities in the OCC raw materials through vibration, wind power and water power sorting methods;

[0010] S4 purification treatment process: the sorted OCC raw material is transported to the purification treatment device, and the residual impurities in the OCC raw material are removed by electrostatic separation and magnetic separation method;

[0011] S5 dust removal treatment process: the OCC raw material after purification treatment is transported to the dust removal treatment device, and the dust impurities in the OCC raw material are removed by bag dust removal and electrostatic dust removal method;

[0012] S6 quality detection process: the OCC raw material after deslagging treatment is subjected to quality detection to ensure that it meets the production requirements of kraft box board paper;

[0013] S7 storage and conveying process: the qualified OCC raw material is stored in the storage bin, and the kraft box board paper is conveyed to the production line through the conveying system according to the production needs.

[0014] As a further scheme of the application, the rough separation and deslagging device comprises a magnetic separation cylinder, a metal detector, a crusher and a screening machine;

[0015] The magnetic separation cylinder is used to remove the magnetic metal impurities in the OCC raw material;

[0016] The metal detector is used to detect and remove the non-magnetic metal impurities in the OCC raw material;

[0017] The crusher is used to crush the OCC raw material into particles to improve the separation effect;

[0018] The screening machine is used to separate the fine impurities in the crushed OCC raw material;

[0019] The separation and deslagging device comprises an air separation machine, a water separation machine and an electrostatic separation machine;

[0020] The air separation machine separates the light impurities in the OCC raw material by using aerodynamic principle;

[0021] The water separation machine separates the heavy impurities in the OCC raw material by using the buoyancy principle of water;

[0022] The electrostatic separation machine separates the electrostatic impurities in the OCC raw material by using electrostatic adsorption principle.

[0023] The purification treatment device comprises a high-voltage electrostatic generator, an electrostatic adsorption cylinder and a magnetic separator;

[0024] The high-voltage electrostatic generator is used to generate a high-voltage electrostatic field;

[0025] The electrostatic adsorption cylinder is used to adsorb the electrostatic impurities in the OCC raw material to the surface of the cylinder;

[0026] The magnetic separator is used for separating magnetic metal impurities in OCC raw materials.

[0027] As a further scheme of the present application, the dust removal device comprises a bag filter and an electrostatic precipitator;

[0028] The bag filter separates dust impurities in OCC raw materials through filtration principle;

[0029] The electrostatic precipitator separates electrostatic impurities in OCC raw materials through electrostatic adsorption principle.

[0030] The quality detection process comprises a visual detection process, a metal detection process and a size detection process;

[0031] The visual detection process is used for detecting foreign matters and color differences in OCC raw materials;

[0032] The metal detection process is used for detecting metal impurities in OCC raw materials;

[0033] The size detection process is used for detecting whether the size of OCC raw materials meets production requirements.

[0034] The storage bin comprises a level sensor, a temperature sensor and a humidity sensor;

[0035] The level sensor is used for detecting the level of OCC raw materials in the storage bin;

[0036] The temperature sensor is used for detecting the temperature in the storage bin;

[0037] The humidity sensor is used for detecting the humidity in the storage bin, so as to ensure that the storage environment of OCC raw materials meets production requirements;

[0038] The conveying system comprises a conveying belt, a conveying motor and a conveying speed controller;

[0039] The conveying belt is used for conveying OCC raw materials;

[0040] The conveying motor is used for driving the conveying belt to operate;

[0041] The conveying speed controller is used for adjusting the running speed of the conveying belt, so as to ensure the conveying efficiency and quality of OCC raw materials.

[0042] It also comprises a crushing step of OCC raw materials, a mixing step of OCC raw materials and a humidity adjusting step of OCC raw materials;

[0043] The crushing step crushes the OCC raw materials after coarse separation and residue removal into particles by conveying them into a crusher, so as to improve the separation and residue removal effect;

[0044] The mixing step includes mixing the qualified OCC raw materials in the storage bin with the newly recycled OCC raw materials to ensure the stability of the quality and consistency of the performance of the OCC raw materials;

[0045] The humidity adjusting step adjusts the water content of the mixed OCC raw materials by spraying, steam or infrared method to ensure that the humidity of the OCC raw materials meets the production requirements of the kraft box paper.

[0046] It also includes a dyeing step of the OCC raw materials, an additive adding step of the OCC raw materials, a papermaking step of the OCC raw materials,

[0047] The dyeing step transports the humidity-adjusted OCC raw materials to a dyeing device to dye the OCC raw materials by adding dyes to improve the color saturation and aesthetic appearance of the kraft box paper;

[0048] The additive adding step transports the dyed OCC raw materials to an additive adding device to add various additives such as whitening agents and dispersants to improve the physical properties and printing properties of the kraft box paper;

[0049] The papermaking step transports the additive-added OCC raw materials to a paper machine to produce qualified kraft box paper through pulp preparation, paper sheet forming, pressing and dewatering and drying processes.

[0050] As a further scheme of the present application, it also includes a performance detection step of the kraft box paper and a packaging and storage step;

[0051] The performance detection step detects the performance of the produced kraft box paper, such as tensile strength, tear resistance, burst resistance, thickness and smoothness, to ensure that the kraft box paper meets the relevant quality and performance standards;

[0052] The packaging and storage step packages the qualified kraft box paper and then stores it in a designated warehouse to ensure that the kraft box paper is not damp and contaminated during storage, and maintains good quality and performance.

[0053] Compared with the related art, the OCC slag removal process for kraft box paper processing provided by the present application has the following beneficial effects:

[0054] The OCC slag removal process for kraft box paper processing provided by the present application can effectively remove metal, stone, glass impurities, as well as fine impurities, dust impurities and static impurities in the recycled OCC raw materials, thereby improving the quality of the kraft box paper.

[0055] The OCC deslagging process for kraft boxboard paper processing provided by the application can remove harmful substances in OCC raw materials, so that the produced kraft boxboard paper has better tensile strength, tear strength, burst strength, thickness and smoothness.

[0056] The OCC deslagging process for kraft boxboard paper processing provided by the application can effectively reduce waste generated in the production process, reduce production cost and improve production efficiency.

[0057] The OCC deslagging process for kraft boxboard paper processing provided by the application can reduce environmental pollution caused by waste, which is conducive to sustainable development and green production.

[0058] The OCC deslagging process for kraft boxboard paper processing provided by the application can reduce waste of raw materials, reduce production cost, improve production efficiency, thereby reduce the production cost of products and improve the economic benefit of enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0059] In order to facilitate the understanding of those skilled in the art, the application will be further described below in conjunction with the drawings.

[0060] Figure 1 The first flow diagram of the OCC deslagging process for kraft boxboard paper processing provided by the application is shown in the figure.

[0061] Figure 2 The schematic diagram of the roughing deslagging device provided by the application is shown in the figure.

[0062] Figure 3 The schematic diagram of the sorting deslagging device provided by the application is shown in the figure.

[0063] Figure 4 The schematic diagram of the purification treatment device provided by the application is shown in the figure.

[0064] Figure 5 The schematic diagram of the dust removal treatment device provided by the application is shown in the figure.

[0065] Figure 6 The schematic diagram of the storage bin provided by the application is shown in the figure.

[0066] Figure 7 The schematic diagram of the conveying system provided by the application is shown in the figure.

[0067] Figure 8 The second flow diagram of the OCC deslagging process for kraft boxboard paper processing provided by the application is shown in the figure. DETAILED DESCRIPTION

[0068] Please refer to Figures 1 to 8In the first embodiment of the present application, the OCC deslagging process for processing of kraft boxboard paper, in the production process of kraft boxboard paper, the recovered OCC raw materials are deslagged to improve the quality and performance of kraft boxboard paper, including the following steps:

[0069] S1 raw material conveying process: the recycled OCC raw materials are conveyed to the feed inlet of the deslagging system by the conveying belt;

[0070] S2 roughing deslagging process: in the conveying process, the roughing deslagging device arranged above the conveying belt is used to preliminarily remove the metal, stone and glass impurities in the OCC raw materials;

[0071] S3 sorting deslagging process: the roughed OCC raw materials are conveyed to the sorting deslagging device, and the fine impurities in the OCC raw materials are further removed by vibration, wind power and water power sorting methods;

[0072] S4 purification treatment process: the sorted OCC raw materials are conveyed to the purification treatment device, and the residual impurities in the OCC raw materials are removed by electrostatic separation and magnetic separation methods;

[0073] S5 dust removal treatment process: the purified OCC raw materials are conveyed to the dust removal treatment device, and the dust impurities in the OCC raw materials are removed by bag dust removal and electrostatic dust removal methods;

[0074] S6 quality detection process: the deslagged OCC raw materials are subjected to quality detection to ensure that they meet the production requirements of kraft boxboard paper;

[0075] S7 storage and conveying process: the qualified OCC raw materials are stored in the storage bin, and the kraft boxboard paper is conveyed to the production line according to the production needs through the conveying system.

[0076] The roughing deslagging device includes a magnetic separation cylinder, a metal detector, a crusher and a screening machine;

[0077] The magnetic separation cylinder is used to remove the magnetic metal impurities in the OCC raw materials;

[0078] The metal detector is used to detect and remove the non-magnetic metal impurities in the OCC raw materials;

[0079] The crusher is used to crush the OCC raw materials into particles to improve the sorting effect;

[0080] The screening machine is used to separate the fine impurities in the crushed OCC raw materials;

[0081] The sorting deslagging device includes a wind power sorting machine, a water power sorting machine and an electrostatic sorting machine;

[0082] The wind sorter utilizes the principle of aerodynamics to separate the light impurities in the OCC raw materials.

[0083] Among them, the principle of aerodynamics in the wind sorter, this principle plays a role through the following two ways:

[0084] Bernoulli's principle shows that the sum of pressure energy, potential energy and kinetic energy in the airflow is constant. In the wind sorter, the pressure around the high-speed airflow is low, when the light impurities in the OCC raw materials enter the high-speed airflow area, will be subjected to lower pressure, and be "sucked" to the center of the airflow, so as to realize the separation from the heavy raw materials.

[0085] Buoyancy is the upward force exerted by a fluid on an object. In the wind sorter, the light impurities in the airflow are subjected to greater buoyancy, which makes them move upward, further realizing the separation from the heavy raw materials.

[0086] Through the above aerodynamic principle, the wind sorter realizes the efficient separation of light impurities in the OCC raw materials

[0087] The water sorter utilizes the principle of water buoyancy to separate the heavy impurities in the OCC raw materials.

[0088] Among them, the principle of water buoyancy is based on Archimedes' principle, that is, the object immersed in the liquid is subjected to upward buoyancy, and its size is equal to the weight of the liquid displaced by the object. In the water sorter, this principle plays a role through the following ways:

[0089] When the heavy impurities are immersed in water, they will be subjected to the action of gravity and buoyancy. If the gravity is greater than the buoyancy, the impurities will sink; if the gravity is equal to the buoyancy, the impurities will be suspended in water; if the gravity is less than the buoyancy, the impurities will float. Therefore, by controlling the density and pressure of water, the buoyancy of heavy impurities can be greater than the gravity, so as to realize the separation of impurities from the OCC raw materials.

[0090] The water flow in the water sorter often has a rotating motion, generating a centrifugal force. The centrifugal force will make the impurities away from the center of rotation, further realizing the separation from the OCC raw materials.

[0091] Through the above principle of water buoyancy, the water sorter realizes the efficient separation of heavy impurities in the OCC raw materials

[0092] The electrostatic sorter utilizes the principle of electrostatic adsorption to separate the electrostatic impurities in the OCC raw materials.

[0093] Among them, the principle of electrostatic adsorption is based on the interaction between electric charges. When the electric field in the electrostatic sorter is applied to the OCC raw materials, the electrostatic impurities in the raw materials will be subjected to the action of electric field force. The principle of electrostatic adsorption plays a role through the following ways:

[0094] In the electrostatic separator, an electrostatic field is generated between the electrode plates. When the electrostatic impurities enter the electric field, they will move towards the electrode plate due to the electrostatic force. The electrostatic force is determined by the electric field strength and the amount of charge. By controlling the electric field strength, the electrostatic impurities can be separated from other impurities.

[0095] The dielectric is polarized in the electrostatic field, that is, the positive and negative charges in the dielectric will separate along the direction of the electric field. The polarization intensity is related to the electric field strength and the polarization rate of the dielectric. In the electrostatic separator, the polarization rate of the electrostatic impurities is usually high, so they are more susceptible to the electrostatic force in the electric field, thereby achieving separation from the OCC raw materials.

[0096] Through the above electrostatic adsorption principle, the electrostatic separator realizes efficient separation of electrostatic impurities in the OCC raw materials.

[0097] The purification treatment device includes a high-voltage electrostatic generator, an electrostatic adsorption drum, and a magnetic separator.

[0098] The high-voltage electrostatic generator is used to generate a high-voltage electrostatic field.

[0099] The electrostatic adsorption drum is used to adsorb electrostatic impurities in the OCC raw materials to the surface of the drum.

[0100] The magnetic separator is used to separate magnetic metal impurities in the OCC raw materials.

[0101] The dust removal treatment device includes a bag filter and an electrostatic precipitator.

[0102] The bag filter separates dust impurities in the OCC raw materials through filtration principle.

[0103] The electrostatic precipitator separates electrostatic impurities in the OCC raw materials through electrostatic adsorption principle.

[0104] The quality detection process includes a visual detection process, a metal detection process, and a size detection process.

[0105] The visual detection process is used to detect foreign matter and color differences in the OCC raw materials.

[0106] The metal detection process is used to detect metal impurities in the OCC raw materials.

[0107] The size detection process is used to detect whether the size of the OCC raw materials meets the production requirements.

[0108] The storage bin includes a level sensor, a temperature sensor, and a humidity sensor.

[0109] The level sensor is used to detect the OCC raw material level in the storage bin;

[0110] The temperature sensor is used to detect the temperature in the storage bin;

[0111] The humidity sensor is used to detect the humidity in the storage bin to ensure that the storage environment of the OCC raw material meets the production requirements;

[0112] The conveying system includes a conveying belt, a conveying motor, and a conveying speed controller;

[0113] The conveying belt is used to convey the OCC raw material;

[0114] The conveying motor is used to drive the conveying belt to operate;

[0115] The conveying speed controller is used to adjust the running speed of the conveying belt to ensure the conveying efficiency and quality of the OCC raw material.

[0116] It also includes a crushing step of OCC raw material, a mixing step of OCC raw material, and a humidity adjusting step of OCC raw material;

[0117] The crushing step crushes the OCC raw material after coarse selection and residue removal into a crusher to improve the effect of selection and residue removal;

[0118] The mixing step includes mixing the qualified OCC raw material in the storage bin with newly recycled OCC raw material to ensure the quality stability and performance consistency of the OCC raw material;

[0119] The humidity adjusting step delivers the mixed OCC raw material to a humidity adjusting device to adjust the water content of the OCC raw material by spraying, steam, or infrared method to ensure that the humidity of the OCC raw material meets the production requirements of kraft boxboard paper.

[0120] It also includes a dyeing step of OCC raw material, an additive adding step of OCC raw material, and a papermaking step of OCC raw material,

[0121] The dyeing step delivers the humidity-adjusted OCC raw material to a dyeing device to dye the OCC raw material by adding dyes to improve the color saturation and aesthetics of kraft boxboard paper;

[0122] The additive adding step delivers the dyed OCC raw material to an additive adding device to add various additives such as whitening agents and dispersants to improve the physical properties and printing properties of kraft boxboard paper;

[0123] The papermaking step produces qualified carton paper by conveying the OCC raw material with additives into a paper machine, through pulp preparation, paper sheet forming, press dewatering and drying processes.

[0124] The performance detection step and the packaging and storage step of the carton paper are also included.

[0125] The performance detection step detects the performance of the produced carton paper, such as tensile strength, tear resistance, burst resistance, thickness and smoothness, to ensure that the carton paper meets the relevant quality and performance standards.

[0126] The packaging and storage step packages the qualified carton paper and then stores it in a designated warehouse to ensure that the carton paper is not damp and contaminated during storage, maintaining good quality and performance.

[0127] The working principle of the OCC deslagging process for carton paper processing provided by the present application is as follows:

[0128] First, the recycled OCC raw material is conveyed to the feed inlet of the deslagging system by a conveyor belt. This is the first step of the entire deslagging process, ensuring that the OCC raw material can continuously enter the subsequent processing procedures.

[0129] During the conveying process, the coarse deslagging device set above the conveyor belt is used to preliminarily remove the metal, stone and glass impurities in the OCC raw material. This step utilizes the principle of mechanical screening, filtering out larger impurities through different size screens to improve the effect of subsequent sorting and deslagging.

[0130] The coarsely selected OCC raw material is conveyed to the sorting deslagging device, which further removes fine impurities in the OCC raw material through vibration, wind power and water power sorting methods. This step mainly utilizes physical principles such as gravity, buoyancy and electrostatic adsorption to separate impurities of different densities and charges, improving the purity of the OCC raw material.

[0131] The sorted OCC raw material is conveyed to the purification treatment device, which removes residual impurities in the OCC raw material through electrostatic separation and magnetic separation methods. This step utilizes the principles of electrostatic field and magnetic field to adsorb metal and non-metal impurities in the OCC raw material, further improving the quality of the OCC raw material.

[0132] The purified OCC raw material is conveyed to the dust removal treatment device, which removes dust impurities in the OCC raw material through bag dust removal and electrostatic dust removal methods. This step uses filtration and electrostatic adsorption principles to remove fine dust particles, ensuring the cleanliness of the OCC raw material.

[0133] The OCC raw material after deslagging treatment is subjected to quality detection to ensure that it meets the production requirements of kraft boxboard paper. This step ensures that the purity, particle size, and color performance indicators of the OCC raw material meet the production requirements through visual detection, metal detection, and size detection methods.

[0134] The qualified OCC raw material is stored in a storage bin, and the kraft boxboard paper is transported to the production line through a conveying system according to production needs. This step ensures the storage and transportation of the OCC raw material, ensuring the continuity and stability of the production process.

[0135] The entire working principle realizes multi-stage sorting, purification, and dust removal treatment of the OCC raw material, significantly improving the quality of the recycled OCC raw material, thereby improving the performance of the kraft boxboard paper. At the same time, this process effectively reduces waste during production, reduces production costs, and improves production efficiency.

[0136] Second embodiment

[0137] Based on the OCC deslagging process for kraft boxboard paper processing provided in the first embodiment of the present application, the second embodiment of the present application proposes another OCC deslagging process for kraft boxboard paper processing. The second embodiment is only a further scheme of the first embodiment as the present invention, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0138] The second embodiment of the present application will be further described below in conjunction with the drawings and embodiments

[0139] The working principle of the OCC deslagging process for kraft boxboard paper processing provided by the present application is as follows:

[0140] The recycled OCC raw material is conveyed to the feed inlet of the deslagging system through a conveyor belt. During the conveying process, the coarse deslagging device arranged above the conveyor belt is used to preliminarily remove metal, stone, and glass impurities from the OCC raw material. The OCC raw material after coarse selection is conveyed to the sorting deslagging device, and further small impurities are removed from the OCC raw material through vibration, wind power, and water power sorting methods. The sorted OCC raw material is conveyed to the purification treatment device, and residual impurities are removed from the OCC raw material through electrostatic separation and magnetic separation methods. The OCC raw material after purification treatment is conveyed to the dust removal treatment device, and dust impurities are removed from the OCC raw material through bag dust removal and electrostatic dust removal methods. The OCC raw material after deslagging treatment is subjected to quality detection to ensure that it meets the production requirements of kraft boxboard paper.

[0141] The qualified OCC raw material is stored in a storage bin, and the kraft boxboard paper is transported to the production line through a conveying system according to production needs.

[0142] The embodiment further includes a crushing step of the OCC raw material, which improves the effect of the separation and removal of the residue by crushing the OCC raw material into particles through conveying the OCC raw material after the rough separation and removal of the residue to a crusher.

[0143] The embodiment further includes a crushing step of the OCC raw material, which improves the effect of the separation and removal of the residue by crushing the OCC raw material into particles through conveying the OCC raw material after the rough separation and removal of the residue to a crusher.

[0144] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, which can be directly or indirectly applied to other related technical fields, and the scope of the present application is defined by the appended claims and their equivalents, and all of them are included in the patent protection scope of the present application.

Claims

1. A process for OCC de-sludging for processing of kraft linerboard paper, characterized by, In the production process of kraft linerboard, the recycled OCC raw materials undergo slag removal treatment to improve the quality and performance of the kraft linerboard, including the following steps: S1 Raw Material Conveying Process: The recovered OCC raw material is conveyed to the feed inlet of the slag removal system via a conveyor belt; S2 roughing and slag removal process: During the conveying process, the roughing and slag removal device set above the conveyor belt initially removes large impurities such as metal, stone and glass from the OCC raw material; S3 Sorting and Slag Removal Process: The coarsely selected OCC raw material is transported to the sorting and slag removal device, where fine impurities in the OCC raw material are further removed through vibration, air, and water separation methods. S4 purification process: The sorted OCC raw materials are transported to the purification device, where residual impurities in the OCC raw materials are removed through electrostatic separation and magnetic separation. S5 Dust Removal Process: The purified OCC raw material is transported to the dust removal device, where dust and impurities in the OCC raw material are removed by bag filter and electrostatic dust removal methods. S6 Quality Inspection Process: The OCC raw materials after slag removal treatment are subjected to quality inspection to ensure that they meet the production requirements of kraft linerboard. S7 Storage and Conveying Process: Qualified OCC raw materials are stored in the storage warehouse, and kraft linerboard is conveyed to the production line through the conveying system according to production needs; The coarse separation and slag removal device includes several parts: magnetic separator drum, metal detector, crusher and screening machine; The magnetic separator drum is used to remove magnetic metal impurities from OCC raw materials; The metal detector is used to detect and remove non-magnetic metal impurities in OCC raw materials; The crusher is used to crush OCC raw materials into particles to improve the sorting effect; The screening machine is used to separate fine impurities from the crushed OCC raw material; The sorting and slag removal device includes several parts: a wind separator, a hydraulic separator, and an electrostatic separator. The wind-powered separator uses aerodynamic principles to separate light impurities from OCC raw materials; The hydraulic separator uses the principle of buoyancy to separate heavy impurities from OCC raw materials. The electrostatic separator uses the principle of electrostatic adsorption to separate electrostatic impurities from OCC raw materials. The purification and treatment device includes several parts: a high-voltage electrostatic generator, an electrostatic adsorption drum, and a magnetic separator. The high-voltage electrostatic generator is used to generate a high-voltage electrostatic field. The electrostatic adsorption roller is used to adsorb electrostatic impurities in the OCC raw material onto the roller surface. The magnetic separator is used to separate magnetic metal impurities from OCC raw materials; The dust removal device includes two parts: a bag filter and an electrostatic precipitator. The bag filter separates dust and impurities from the OCC raw material through filtration. The electrostatic precipitator separates electrostatic impurities from OCC raw materials through the principle of electrostatic adsorption. The quality inspection process includes several parts: visual inspection, metal inspection, and dimensional inspection. The visual inspection process is used to detect foreign objects and color differences in OCC raw materials; The metal detection process is used to detect metal impurities in OCC raw materials; The size inspection process is used to check whether the size of the OCC raw material meets the production requirements; The storage bin includes several components such as a level sensor, a temperature sensor, and a humidity sensor; The level sensor is used to detect the level of OCC raw material in the storage bin; The temperature sensor is used to detect the temperature in the storage compartment; The humidity sensor is used to detect the humidity in the storage chamber to ensure that the storage environment of the OCC raw materials meets the production requirements. The conveying system includes several parts: a conveyor belt, a conveyor motor, and a conveying speed controller. The conveyor belt is used to transport OCC raw materials; The conveyor motor is used to drive the conveyor belt. The conveying speed controller is used to adjust the running speed of the conveyor belt to ensure the conveying efficiency and quality of OCC raw materials.

2. The OCC de-inking process for processing of kraft liner paper as claimed in claim 1, wherein, It also includes the crushing step of OCC raw materials, the mixing step of OCC raw materials, and the moisture conditioning step of OCC raw materials; The crushing step involves feeding the OCC raw material after coarse selection and slag removal into a crusher for crushing, thereby crushing the OCC raw material into particles and improving the sorting and slag removal effect. The mixing step includes mixing qualified OCC raw materials in the storage silo with newly recovered OCC raw materials to ensure the stability of the quality and consistency of the OCC raw materials. The humidity conditioning step involves feeding the mixed OCC raw materials into a humidity conditioning device and adjusting the moisture content of the OCC raw materials through spraying, steaming, or infrared methods to ensure that the humidity of the OCC raw materials meets the production requirements of kraft linerboard.

3. The OCC de-inking process for processing of kraft liner paper as claimed in claim 1, wherein, It also includes the dyeing step of OCC raw materials, the step of adding auxiliaries to OCC raw materials, and the papermaking step of OCC raw materials. The dyeing step involves feeding the conditioned OCC raw material into a dyeing device and adding dye to treat the OCC raw material, thereby improving the color saturation and aesthetics of the kraft linerboard. The step of adding auxiliaries involves feeding the dyed OCC raw material into an auxiliary addition device and adding various auxiliaries such as whitening agents and dispersants to improve the physical and printing properties of kraft linerboard. The papermaking process involves feeding OCC raw materials with added additives into a paper machine, and producing qualified kraft linerboard through pulp preparation, paper sheet forming, pressing, dewatering, and drying processes.

4. The OCC slag removal process for kraft linerboard processing according to claim 1, characterized in that, It also includes performance testing steps for kraft linerboard and packaging and storage steps; The performance testing step involves testing the produced kraft linerboard for performance parameters such as tensile strength, tear strength, burst strength, thickness, and smoothness to ensure that the kraft linerboard meets relevant quality and performance standards. The packaging and storage steps involve packaging the qualified kraft linerboard and then storing it in a designated warehouse to ensure that the kraft linerboard is not exposed to moisture or contamination during storage, thus maintaining its good quality and performance.

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