A method for recycling waste glass in a glass processing production line

Abstract

The application relates to the technical field of recycling, and discloses a glass processing production line waste glass recycling method, which comprises the following steps: S1, first-time sorting, first-time sorting is carried out at the discharging end of the glass processing production line; S2, first-time crushing, the sorted waste glass is crushed for the first time; S3, impurity removal, the waste glass particles after crushing are subjected to impurity removal; S4, second-time crushing, the waste glass particles after impurity removal are crushed for the second time; S5, second-time sorting, the waste glass particles are subjected to color classification; S6, cleaning, the classified waste glass particles are cleaned; and S7, drying and screening, the cleaned waste glass particles are subjected to drying and screening. Through the first-time sorting, the first-time crushing, the impurity removal, the second-time crushing, the second-time sorting, the cleaning and the drying and screening, the impurity removal of the waste glass fragments is more thorough, the particle gradation is more uniform, and the color classification is more accurate, so that the quality of the recycled waste glass is effectively improved, and the production raw material requirements of high-end glass products can be met.

Description

Technical Field

[0001] This invention relates to the field of recycling technology, and more specifically, to a method for recycling waste glass from a glass processing production line. Background Technology

[0002] The glass processing process generates a large amount of waste glass, such as defective products and cutting scraps. If this waste is directly landfilled, it will not only waste land space but also cause the loss of silicon raw materials. Recycling and reusing waste glass can reduce the mining of natural minerals and reduce the energy consumption of glass smelting. It is an effective way for the glass industry to practice green and low-carbon development.

[0003] Currently, most traditional glass recycling processes in the industry involve simple crushing before directly feeding the waste glass into the furnace. This results in the inability to completely remove impurities such as metals and ceramics mixed in with the waste glass, which can easily lead to defects in the finished product and affect its quality. At the same time, the waste is not sorted by color, and colored glass mixed with colorless raw materials will change the color of the finished product and fail to meet production standards. The existing process only uses single crushing, resulting in uneven particle sizes. Larger particles are difficult to melt fully, which further affects the uniformity of the finished glass. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a method for recycling waste glass from a glass processing production line, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for recycling waste glass from a glass processing production line includes the following steps: S1: First sorting, a sorting unit is set up at the discharge end of the glass processing production line for the first sorting; S2: First crushing, the waste glass separated in S1 is transported to the crushing unit for the first crushing; S3: Impurity removal, removing impurities from the waste glass particles after S2 crushing, including metallic impurities; S4: Second crushing, the waste glass particles after impurity removal in S3 are transported to the crushing unit for a second crushing; S5: Second sorting, color-sorting the waste glass particles after the second crushing in S4; S6: Cleaning, cleaning the waste glass particles sorted in S5; S7: Drying and screening. The waste glass particles cleaned in S6 are dried and screened according to their particle size.

[0006] Furthermore, the sorting unit in step S1 consists of manual sorting and infrared detection, which sorts the waste glass by color and removes large impurities such as metal and ceramics.

[0007] Furthermore, the crushing unit in step S2 consists of a roller crusher and a vibrating screen. The roller crusher crushes large pieces of waste glass into 50mm particles. The crushed waste glass particles are then conveyed to the vibrating screen to screen out particles larger than 50mm, which are then crushed again.

[0008] Furthermore, the impurity removal in step S3 is magnetic separation, in which qualified waste glass particles screened by the vibrating screen are transported to the magnetic separator to remove metal impurities by magnetic separation.

[0009] Furthermore, in step S4, the waste glass particles after impurity removal are crushed a second time so that the particle size of the waste glass particles can be less than 10mm. During the second crushing process, the floating dust generated by crushing is extracted by air suction.

[0010] Furthermore, in step S5, the second sorting is color screening, in which the waste glass particles after the second crushing are transported to a photoelectric color sorter for fine color classification.

[0011] Furthermore, in step S6, the waste glass particles after color screening are transported to a washing tank to remove oil, dust and colloidal impurities.

[0012] Furthermore, in step S7, the washed waste glass particles are drained of water using a draining device, dried using a dryer, and then screened into different particle sizes using a multi-stage vibrating screen.

[0013] Furthermore, the basic sorting colors are transparent, green, and brown glass.

[0014] Furthermore, the floating dust is drawn into a bag filter for treatment by a fan.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through a first sorting, a first crushing, impurity removal, a second crushing, a second sorting, washing, drying and screening, enables waste glass fragments to meet the standards of qualified production raw materials. Compared with the traditional simple crushing and recycling process, impurities are removed more thoroughly, particle size distribution is more uniform, and color classification is more accurate, effectively improving the quality of recycled waste glass and meeting the raw material requirements for the production of high-end glass products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a waste glass recycling method for a glass processing production line according to the present invention. Detailed Implementation

[0017] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0018] The following is in conjunction with the appendix Figure 1 This embodiment will be described in further detail.

[0019] Combination Figure 1 As shown in this embodiment, a method for recycling waste glass from a glass processing production line includes the following steps: S1: First sorting, a sorting unit is set up at the discharge end of the glass processing production line for the first sorting; S2: First crushing, the waste glass separated in S1 is transported to the crushing unit for the first crushing; S3: Impurity removal, removing impurities from the waste glass particles after S2 crushing, including metallic impurities; S4: Second crushing, the waste glass particles after impurity removal in S3 are transported to the crushing unit for a second crushing; S5: Second sorting, color-sorting the waste glass particles after the second crushing in S4; S6: Cleaning, cleaning the waste glass particles sorted in S5; S7: Drying and screening. The waste glass particles cleaned in S6 are dried and screened according to their particle size.

[0020] In actual use, waste glass fragments are transported to the discharge end during processing and undergo initial sorting by a sorting unit. The sorting unit combines manual sorting with infrared detection to perform basic sorting of the waste glass into transparent, green, and brown glass. At the same time, large impurities such as metal and ceramics are manually removed, completing the first basic classification. Then, the glass from the first basic classification is conveyed to the crushing unit via a conveying device for the first crushing. In actual use, the crushing unit includes a roller crusher and a vibrating screen. The distance between the two crushing rollers in the roller crusher is 45mm, and the screen opening of the vibrating screen is 50mm×50mm. Specifically, glass of various colors is sequentially fed into the roller crusher. The waste glass is crushed into waste glass particles smaller than 50mm by the opposing rotation of the crushing rollers. The crushed waste glass particles are then fed into the vibrating screen for screening. If particles larger than 50mm are screened out, the particles that do not meet the size requirements are reintroduced into the roller crusher for crushing and screening again until the required particle size is achieved.

[0021] In this embodiment, the impurity removal in step S3 is magnetic separation. The qualified waste glass particles screened by the vibrating screen are transported to the magnetic separator to remove metal impurities by magnetic separation.

[0022] Specifically, the waste glass particles that meet the required particle size after the first crushing are conveyed to a magnetic separator, where the magnetic force of an electromagnet is used to magnetically separate the metal impurities in the waste glass particles for centralized processing.

[0023] In actual use, the waste glass particles after magnetic separation are conveyed to the roller crusher for a second crushing. The second crushing will break the waste glass particles to less than 10mm. At the same time, the floating dust generated during the crushing process will be drawn into the bag filter for treatment by the fan.

[0024] In this embodiment, the second sorting in step S5 is color screening, in which the waste glass particles after the second crushing are transported to a photoelectric color sorter for fine color classification.

[0025] In actual use, the waste glass particles from the second crushing are conveyed to the photoelectric color sorter. The photoelectric color sorter will sort the waste glass particles according to the set color classification standards. At the same time, the photoelectric color sorter will identify and remove residual impurities (such as stones, ceramics, and plastics). After the waste glass particles have completed color screening, a cleaning stage will be carried out. The color-screened waste glass particles will be transported to a cleaning tank. By adding cleaning agent to the cleaning tank, oil, dust and colloidal impurities on the waste glass particles can be effectively removed. In this process, after the waste glass particles are processed, they are conveyed to a draining device to drain the water. Then, the drained waste glass particles are conveyed to a dryer for drying. Next, the waste glass particles are screened into different particle sizes by a multi-stage vibrating screen. Specifically, the multi-stage vibrating screen has two layers: the upper screen has a mesh size of 10mm×10mm, and the lower screen has a mesh size of 2mm×2mm. Finally, the waste glass particles of different sizes are stored separately. At this point, the waste glass particles can be reused as raw materials for glass production.

[0026] The following results were obtained by testing the waste glass particles recovered in this embodiment: Colorless waste glass particles achieved a 99.2% impurity removal rate, a 98.7% color classification accuracy rate, a 0.3% moisture content, and a 97.5% particle size qualification rate. The defect rate of the finished glass obtained after remelting was reduced by 72% compared to traditionally recycled waste glass, and melting fuel consumption was reduced by 14.8%. Green waste glass particles achieved a 99.1% impurity removal rate, a 98.2% color classification accuracy rate, a 0.38% moisture content, and a 97.1% particle size qualification rate, meeting the requirements for bottle and jar glass production. The finished product qualification rate increased by 6.8% after remelting, and energy consumption decreased by 14.2%. Brown waste glass particles achieved a 99.4% impurity removal rate, a 98.9% color classification accuracy rate, a 0.27% moisture content, and a 98.1% particle size qualification rate. After remelting, product quality remained stable, and energy consumption decreased by 15.3%.

[0027] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A method for recycling waste glass from a glass processing production line, characterized in that, Includes the following steps: S1: First sorting, a sorting unit is set up at the discharge end of the glass processing production line for the first sorting; S2: First crushing, the waste glass separated in S1 is transported to the crushing unit for the first crushing; S3: Impurity removal, removing impurities from the waste glass particles after S2 crushing, including metallic impurities; S4: Second crushing, the waste glass particles after impurity removal in S3 are transported to the crushing unit for a second crushing; S5: Second sorting, color-sorting the waste glass particles after the second crushing in S4; S6: Cleaning, cleaning the waste glass particles sorted in S5; S7: Drying and screening. The waste glass particles cleaned in S6 are dried and screened according to their particle size.

2. The method for recycling waste glass from a glass processing production line according to claim 1, characterized in that: The sorting unit in step S1 involves manual sorting and infrared detection. Waste glass is sorted by color to remove large impurities such as metal and ceramics.

3. The method for recycling waste glass from a glass processing production line according to claim 1, characterized in that: The crushing unit in step S2 consists of a roller crusher and a vibrating screen. The roller crusher crushes large pieces of waste glass into 50mm particles. The crushed waste glass particles are then conveyed to the vibrating screen to screen out particles larger than 50mm, which are then crushed again.

4. The method for recycling waste glass from a glass processing production line according to claim 3, characterized in that: The impurity removal in step S3 is magnetic separation. The qualified waste glass particles screened by the vibrating screen are transported to the magnetic separator to remove the metal impurities.

5. The method for recycling waste glass from a glass processing production line according to claim 1, characterized in that: In step S4, the waste glass particles after impurity removal are crushed a second time so that the particle size of the waste glass particles can be less than 10mm. During the second crushing process, the floating dust generated by crushing is extracted by air suction.

6. The method for recycling waste glass from a glass processing production line according to claim 1, characterized in that: In step S5, the second sorting is color screening, in which the waste glass particles after the second crushing are transported to a photoelectric color sorter for fine color classification.

7. The method for recycling waste glass from a glass processing production line according to claim 6, characterized in that: In step S6, the waste glass particles after color screening are transported to a washing tank to remove oil, dust and colloidal impurities.

8. The method for recycling waste glass from a glass processing production line according to claim 1, characterized in that: In step S7, the washed waste glass particles are drained through a draining device, dried in a dryer, and then screened into different particle sizes by a multi-stage vibrating screen.

9. A method for recycling waste glass from a glass processing production line according to claim 2, characterized in that: The basic sorting colors are transparent, green, and brown glass.

10. A method for recycling waste glass from a glass processing production line according to claim 5, characterized in that: The floating dust is drawn into a bag filter by a fan for treatment.

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