Humus soil sorting treatment system
By designing a humus sorting and treatment system, using multiple separation process steps, the humus soil is resource-based treatment, which solves the problem of difficulty in reducing the amount of humus soil and achieves efficient resource-based utilization.
Patent Information
- Application Number
- CN202420108712.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The prior art is difficult to effectively reduce the amount of humus in landfills, resulting in low resource utilization efficiency.
A humus sorting and treatment system is designed, including feed section, primary screen section, primary separation section and secondary separation section. The humus is resource-based treatment through process steps such as magnetic separation, jigging sorting, shaker treatment, drum screen, eddy current sorter and precipitation and defiltration device.
Through this system, the miscibility of humus can be reduced from 10% to 1% or below, the removal of fine and light substances can be achieved, and metals and precious metals can be recovered from humus soil, thereby improving resource utilization, and solving the problem of difficult outlook for large amounts of humus.
Smart Images
Figure CN222642235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of comprehensive treatment of stale garbage in landfills, in particular to a humus soil sorting and processing system. Background Art
[0002] From the perspective of landfill management technology, with the gradual increase in the demand for ecological management of landfills and the continuous improvement of relevant standards, the management technology of landfills has gradually changed from single simple closure, relocation and other extensive treatment to screening and comprehensive utilization, accelerated stabilization and ecological closure and other refined and comprehensive treatment. Most of the stale garbage in landfills is mixed garbage, which contains plastics, metals, glass, wood, ash, bricks and tiles, etc., and also contains a large amount of organic matter. When screening and comprehensive utilization of landfills and land withdrawal, the stale garbage in landfills with a long history will be mined and screened, and the screened garbage will be recycled to the maximum extent, which can realize the reuse of land. After screening, stale garbage can be classified into four types of substances: light objects on the screen, humus soil under the screen, inorganic aggregates, and magnetic metals. Humus soil is the largest type of sieved material, and its final destination is the key to the success of landfill screening comprehensive utilization and land clearance. If the sieved material cannot be effectively utilized and is simply and crudely landfilled, then it is meaningless for the relocation and disposal of the landfill. It is just transferring the landfill material from one landfill to another, and its reduction efficiency is too low. At present, due to the characteristics and large amount of humus soil, it is difficult to digest in a short period of time. The domestic disposal of humus soil is mainly landfilled, and it is impossible to effectively reduce the resource of humus soil. Utility Model Content
[0003] The utility model provides a humus sorting and processing system to solve the technical problem that humus in existing landfills is difficult to reduce.
[0004] The technical problem of the utility model is solved by the following technical solutions:
[0005] A humus soil sorting and processing system is used for processing humus soil for resource utilization, comprising a feeding section, a primary screening section, a primary separation section and a secondary separation section connected in sequence, wherein the primary screening section comprises a primary screening magnetic separator, the inlet of which is connected to the feeding section, receives the humus soil, separates and stores the magnetic matter after magnetic separation, and transports the remaining material to the primary separation section; the primary separation section comprises a jig and a shaking table, the remaining material of the primary screening section enters the jig, and is respectively separated into surface layer bulk material, bottom fine material and tailings, the tailings are continuously transported to the secondary separation section, the bottom fine material is input into the shaking table for processing, and the surface layer bulk material is further processed to separate precious metals; the secondary separation section comprises a drum screen, an eddy current separator and a sedimentation and defiltration device, after the tailings enter the drum screen, solids and sand-containing water are separated, the solids are input into the eddy current separator for sorting, and the sand-containing water enters the sedimentation and defiltration device for further separation and processing.
[0006] In some embodiments, the primary separation section also includes a large material processing section for processing the surface layer large material, including a large material collecting pool, a crusher, a drum screen, and a shaking table. The surface layer large material produced in the primary separation section enters the large material collecting pool, and then passes through the crusher, the drum screen, and the shaking table in sequence to separate the precious metals.
[0007] In some embodiments, the primary separation stage further includes a shaking table iron remover, which is disposed on each of the shaking tables and is used to separate iron powder on the shaking tables.
[0008] In some embodiments, in the primary separation section, the jig includes a primary jig and a secondary jig, and the inlet of the primary jig is connected to the primary screening section; it also includes a wet magnetic separator, and the residual material passes through the primary jig, the wet magnetic separator and the secondary jig in sequence, wherein the tailings of the primary jig and the secondary jig enter the secondary separation section, and the bottom fine material separated by the first jig enters the second jig after the iron powder is separated by the wet magnetic separator, and the bottom fine material separated by the second jig enters the shaking table.
[0009] In some embodiments, the secondary separation section also includes a sand-water separation component, including a primary spiral sand-water separation device and a secondary spiral sand-water separation device. The primary spiral sand-water separation device receives the tailings generated by the primary separation section, and obtains sewage and tailings after separation. The sewage is input into the sedimentation and filtration device after removing floating light matter, and the tailings enter the drum screen to separate fine sand water and solids. The solids here enter the vortex separator to obtain aluminum material and medium and coarse sand. The fine sand water enters the secondary spiral sand-water separation device to separate fine sand and sewage, and the sewage enters the sedimentation and filtration device.
[0010] In some embodiments, the sedimentation and filtration device includes a sedimentation tank, a vibrating dewatering screen and a filter press, wherein the sedimentation tank receives sewage for sedimentation to obtain a lower layer of sediment, a portion of the lower layer of sediment enters the vibrating dewatering screen to obtain fine sand, and a portion enters the filter press to obtain mud cake. The vibrating dewatering screen also receives fine sand from a secondary spiral sand and water separation device.
[0011] In some embodiments, the sedimentation tank includes a primary sedimentation tank and a secondary sedimentation tank, wherein the lower sediment obtained in the primary sedimentation tank is input into a vibrating dewatering screen, the upper wastewater enters the secondary sedimentation tank for further sedimentation, and the lower sediment obtained is further input into a filter press.
[0012] In some embodiments, the sand-water separation assembly further includes an intermediate drum screen, which is used to receive the sewage obtained by the primary sand-water separation device, separate light floating objects, and the remaining sewage enters the sedimentation and filtration device.
[0013] In some embodiments, the drum screen is a multi-segment drum screen.
[0014] In some embodiments, the multi-stage drum screen includes an upper stage screen and a lower stage screen, wherein the sieve plate aperture of the upper stage screen is 6-10 mm, and the sieve plate aperture of the lower stage screen is 12-20 mm.
[0015] In some embodiments, the drum screen is a multi-segment drum screen.
[0016] The beneficial effects of the present invention compared with the prior art are:
[0017] The utility model separates magnetic substances from humus soil by magnetic separation of a primary screening magnetic separator, further processes the residue after separation of magnetic substances by a jig and a shaking table in a primary separation section, classifies the residue into precious metals, iron powder and tailings, and further processes the tailings by a drum screen, an eddy current separator and a sedimentation and defiltration device in a secondary separation section, and separates the tailings into solids (metal aluminum, fine sand, medium-coarse sand, coarse sand) and sand-containing water. The above-mentioned arrangement can effectively reduce the amount of humus soil, and make full use of the recyclable resources therein, reduce the impurity content of the screened humus soil from 10% to 1% or less, realize the removal of fine and light substances in the humus soil, utilize the humus soil as a resource, and improve the humus soil reduction efficiency.
[0018] In addition, the large surface materials produced after the first-stage separation process enter the large material collection pool, and then pass through the crusher, drum screen and shaking table in sequence to separate the precious metals. A shaking table iron remover is also installed on each shaking table to separate the iron powder on the shaking table. It is possible to select about 1% of metals (iron powder, stainless steel) and precious metals (aluminum, copper, etc.) from the humus soil, thereby further recovering the fine metals and precious metals in the humus soil and further improving the resource utilization rate of the humus soil.
[0019] In some embodiments, the tailings generated by the primary separation section are sequentially passed through a primary spiral sand-water separation device and a drum screen to separate fine sand water and solids, and respectively passed through a secondary spiral sand-water separation device and an eddy current separator to obtain fine sand, aluminum material, medium-coarse sand and sewage, and the sewage is sequentially passed through a sedimentation tank and a vibrating dewatering screen to obtain fine sand material. The above arrangement can separate humus into about 50% fine sand and 40% fine silt, and the humus has a high purity for subsequent comprehensive utilization, and can be reused as raw materials for different building materials, solving the problem of large amounts of humus and difficulty in outlet, and further focusing the difficulty of overcoming the comprehensive utilization of humus on the 40% fine silt, further reducing the terminal utilization of humus.
[0020] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of a humus soil sorting and processing system proposed in an embodiment of the utility model.
[0022] Figure 2 It is a flow chart of the humus soil sorting and processing system proposed in the embodiment of the utility model. DETAILED DESCRIPTION
[0023] The present invention is further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.
[0024] It should be noted that the directional terms such as left, right, up, down, top, and bottom in this embodiment are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.
[0025] The mineral composition of inorganic matter in the humus soil of stale garbage screening is basically similar to that of clay, and the chemical composition (SiO 2 , Fe 2 O 3 、Al 2 O 3 , CaO, MgO, SO 3), and humus contains relatively rich microorganisms, organic matter and a variety of nutrients, and the fine metal substances in the original domestic waste have certain recycling and reuse value. Therefore, according to the types of substances it contains, humus needs to be further separated and used as a building raw material.
[0026] The existing humus soil has a high impurity rate after dry sorting. Therefore, the embodiment of the utility model proposes a humus soil sorting and processing system for the resource utilization of stale garbage humus soil from landfills based on the composition and characteristics of the humus soil. The wet sorting process is used to separate the metals and precious metals in the humus soil, further improving the resource utilization rate of the humus soil. The humus soil after wet sorting has a high purity, and the sand material part can be directly used as building materials, solving the problem of large amount of humus soil and difficult disposal, and focusing the difficulties in the comprehensive utilization of humus soil on 40% of fine powder soil, further reducing the terminal utilization of humus soil. The details are as follows:
[0027] like Figure 1 As shown, the humus soil sorting and processing system is to process the humus soil through the feeding section, primary screening section, primary separation section and secondary separation section of wet sorting, specifically including magnetic separation, jig sorting, shaking table, eddy current, drum screen and other process sections, to recover the metals with high recovery value such as iron powder, aluminum material, copper and zinc powder in the humus soil, to sort and remove the impurities and light materials in the humus soil, and to further refine and sort the sand materials and fine powder soil (mud cake) of different particle sizes, so as to be used as building material resources later. The specific operation method of the humus soil sorting and processing system proposed in the embodiment of the utility model is as follows:
[0028] The humus soil sorting and processing system is used to process humus soil into resources, such as Figure 1 and Figure 2As shown, it includes a feeding section, a primary screening section, a primary separation section and a secondary separation section connected in sequence. Humus enters from the feeding section and undergoes preliminary magnetic separation in the primary screening section to preliminarily separate magnetic substances, wherein the magnetic substances include small pieces of magnetic metal, small iron parts and iron powder. Then the humus after the preliminary magnetic separation enters the primary separation section for precious metal separation and further separation of iron powder, and finally enters the secondary separation section for separation of aluminum, sand, mud and water, wherein the primary screening section includes a primary screening magnetic separator, the inlet of which is connected to the feeding section to receive the humus, and after magnetic separation, the iron powder is separated and stored, and the remaining material is transported to the primary separation section; the primary separation section includes a jig and a shaking table, the remaining material of the primary screening section enters the jig to separate the surface bulk material, the bottom fine material and the tailings, and the tailings are further transported to the secondary separation section, the bottom fine material is input into the shaking table for treatment, and the surface bulk material is further processed to separate the precious metals; the secondary separation section includes a drum screen, an eddy current separator and a sedimentation and defiltration device, after the tailings enter the drum screen, solids and sand-containing water are separated, wherein the solids are such as metallic aluminum, fine sand, medium-coarse sand, and coarse sand, and then the separated solids are input into the eddy current separator for sorting, and the sand-containing water enters the sedimentation and defiltration device for further separation and treatment.
[0029] In addition, the primary separation section also includes a large material processing section for processing large surface materials, including a large material collection pool, a crusher, a drum screen, and a shaking table. The large surface materials produced in the primary separation section enter the large material collection pool, and then pass through the crusher, the drum screen, and the shaking table in sequence to separate the precious metals. Preferably, the primary separation section also includes a shaking table iron remover, which is arranged on each shaking table to separate the iron powder on the shaking table.
[0030] In some preferred embodiments, in the primary separation section, the jig includes a primary jig and a secondary jig, the inlet of the primary jig is connected to the primary screening section, and the humus soil sorting and processing system in this embodiment also includes a wet magnetic separator, and the residual material passes through the primary jig, the wet magnetic separator and the secondary jig in sequence, wherein the tailings of the primary jig and the secondary jig enter the secondary separation section, and the bottom fine material separated by the first jig enters the second jig after the iron powder is separated by the wet magnetic separator, and the bottom fine material separated by the second jig enters the shaking table.
[0031] In some preferred embodiments, the secondary separation section further includes a sand-water separation component, including a primary spiral sand-water separation device and a secondary spiral sand-water separation device. The primary spiral sand-water separation device receives tailings generated by the primary separation section, and obtains sewage and tailings after separation. The sewage is input into the sedimentation and defiltration device after removing floating light objects, and the tailings enter the drum screen to separate fine sand water and solids. The solids enter the eddy current separator to obtain aluminum and medium-coarse sand. The fine sand water enters the secondary spiral sand-water separation device to separate fine sand and sewage, and the sewage enters the sedimentation and defiltration device. The difference in parameters between the primary spiral sand-water separation device and the secondary spiral sand-water separation device is limited to the diameter of the spiral.
[0032] In addition, the sedimentation and filtration device includes a sedimentation tank, a vibrating dewatering screen and a filter press, wherein the sedimentation tank receives sewage for sedimentation to obtain a lower sediment, a portion of the lower sediment enters the vibrating dewatering screen to obtain fine sand material, and a portion enters the filter press for filtration to obtain mud cake, and the vibrating dewatering screen also receives fine sand from a secondary spiral sand-water separation device. Preferably, the sedimentation tank includes a primary sedimentation tank and a secondary sedimentation tank, wherein the lower sediment obtained in the primary sedimentation tank is input into the vibrating dewatering screen, the upper wastewater enters the secondary sedimentation tank for further sedimentation, and the further obtained lower sediment is input into the filter press.
[0033] In other embodiments, the sand-water separation assembly further includes an intermediate drum screen, which is used to receive the sewage obtained by the primary sand-water separation device, separate the light floating objects, and the remaining sewage enters the sedimentation and filtration device.
[0034] In some preferred embodiments, the drum screen is a multi-section drum screen. Specifically, the multi-section drum screen is divided into an upper section screen and a lower section screen in the drum. The sieve hole particle size of the upper section screen is smaller, and the sieve hole particle size of the lower section is slightly larger. The particle size can be selected according to the nature of the incoming material. In the embodiment of the utility model, the sieve plate aperture of the upper section screen is 6-10mm, and the sieve plate aperture of the lower section screen is 12-20mm. The material is introduced into the upper drum from the feed pipe, and then the motor is started to drive the upper drum and the lower drum to rotate at the same time. The material in the upper drum will sort and discharge the material smaller than the sieve hole diameter, and the material with a particle size between the upper and lower sieve holes will be sorted and discharged in the lower drum, and the material larger than the large aperture of the lower section will flow out from the tail of the drum screen.
[0035] The humus sorting and processing system for water-washed humus provided by the embodiment of the utility model has the following advantages: the humus sorting and processing system can remove fine light materials in the humus, specifically, it can reduce the impurity content of the screened humus from 10% to 1% or below; it can also further recover fine metals and precious metals in the humus, specifically, it can select about 1% of metals (iron powder, stainless steel) and precious metals (aluminum, copper, etc.) from the humus; and it can separate the humus into fine sand and gravel and fine powder soil, which can be reused as raw materials for different building materials, specifically, it can separate the humus into about 50% fine sand and 40% fine powder soil for subsequent comprehensive utilization.
[0036] The embodiment of the utility model applies a wet sorting process to the sorting and separation of humus soil, and proposes a humus soil sorting and processing system. The humus soil sorting and processing system solves the problem of high impurity content in dry-sorted humus soil to a great extent; the wet sorting process is used to separate metals and precious metals in the humus soil, further improving the resource utilization rate of the humus soil; the humus soil after wet sorting has a higher purity, and the sand material part can be directly used as building materials, solving the problem of large amount of humus soil and difficult disposal, and further focusing the difficulties in overcoming the comprehensive utilization of humus soil on 40% of fine powder soil, further reducing the terminal utilization of humus soil.
[0037] The working principle of the humus soil sorting and processing system proposed in the embodiment of the utility model is as follows:
[0038] The existing dry sorting of humus soil uses equipment such as drum screens, vibrating screens, and bouncing screens, which mainly separate impurities in the humus soil by the size of the sieve hole diameter, and can only separate materials of different particle sizes, but there is no way to separate fine (same particle size) impurities such as plastics, fibers, and fine metal pieces through screening. The wet sorting proposed in the embodiment of the utility model combines metal magnetism for magnetic separation, and gravity separation is performed for different materials with different densities, so that different types of materials can be separated. Specifically, the embodiment of the utility model selects iron powder from humus soil in a wet state through magnetic separation; selects copper and zinc powder through gravity separation jigs and shaking tables; selects aluminum materials through eddy current equipment (i.e., eddy current separators); and selects light floating objects such as plastics through fine-pore drums. The sandy soil material, which accounts for the largest proportion of humus soil, can be further divided into medium-coarse sand material and fine powder soil material in the humus soil sorting and processing system. Medium-coarse sand can be used as raw material for making unburned bricks, and fine powder soil can be used as raw material for producing ceramsite, cement, microcrystalline glass, etc. The system can make humus soil a resource, improve the efficiency of humus soil reduction, and the humus soil can be used to mix greening soil for landscaping and mine ecological restoration.
[0039] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For technicians in the technical field to which the present invention belongs, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.
Claims
1. A humus soil sorting and processing system, used for processing humus soil for resource recovery, characterized in that: It includes a feeding section, a primary screening section, a primary separation section and a secondary separation section which are connected in sequence, wherein the primary screening section includes a primary screening magnetic separator, the inlet of which is connected to the feeding section, for receiving humus soil, separating and storing the magnetic matter after magnetic separation, and conveying the remaining material to the primary separation section; the primary separation section includes a jig and a shaking table; the secondary separation section includes a drum screen, an eddy current separator and a sedimentation and defiltration device, the secondary separation section also includes a sand and water separation component, including a primary spiral sand and water separation device and a secondary spiral sand and water separation device, the sand and water separation component also includes an intermediate drum screen, the intermediate drum screen is used to receive the sewage obtained by the primary spiral sand and water separation device, separate the light floating objects, and the remaining sewage enters the sedimentation and defiltration device.
2. The humus soil sorting and processing system according to claim 1, characterized in that: The primary separation section also includes a large material processing section for processing large materials on the surface layer, including a large material collection pool, a crusher, a drum screen, and a shaking table.
3. The humus soil sorting and processing system according to claim 2, characterized in that: The primary separation section also includes a shaking table iron remover, which is arranged on each shaking table and is used to separate the iron powder on the shaking table.
4. The humus soil sorting and processing system according to claim 1, characterized in that: In the primary separation section, the jig includes a primary jig and a secondary jig, and the inlet of the primary jig is connected to the primary screening section; it also includes a wet magnetic separator, and the residual material passes through the primary jig, the wet magnetic separator and the secondary jig in sequence.
5. The humus soil sorting and processing system according to claim 1, characterized in that: The sedimentation and filtration device comprises a sedimentation tank, a vibrating dewatering screen and a filter press.
6. The humus soil sorting and processing system according to claim 5, characterized in that: The sedimentation tank comprises a primary sedimentation tank and a secondary sedimentation tank.
7. The humus soil sorting and processing system according to claim 1, characterized in that: The drum screen is a multi-section drum screen.
8. The humus soil sorting and processing system according to claim 7, characterized in that: The multi-stage drum screen comprises an upper stage screen and a lower stage screen, wherein the sieve plate aperture of the upper stage screen is 6-10 mm, and the sieve plate aperture of the lower stage screen is 12-20 mm.