Online recovery process and system for cutting waste mortar

Abstract

The invention provides a cutting waste mortar on-line recovery process and system, and the process comprises the following steps: carrying out primary separation on waste mortar to respectively obtain waste cutting fluid and waste cutting sand; the waste cutting fluid is purified, recycled cutting fluid is obtained, and the recycled cutting fluid and condensate water generated in the purification process can be used for self-cleaning; the waste cutting sand is subjected to secondary separation, and recycled cutting sand is obtained; blending the recycled cutting fluid and the recycled cutting sand into recycled mortar; and new mortar and the recycled mortar are mixed into cutting mortar. The method has the beneficial effects that the continuous treatment and recovery of the waste mortar are realized, the separated recovered cutting fluid and recovered cutting sand are directly applied to reproduction of the slicing machine, the process is simplified, the recovery cost is reduced, the pollution to the environment is reduced, the stability of the components of the cutting mortar is ensured, the application performance of a regenerated product is improved, and the economic benefit is increased. The recycling rate is increased, the production cost is reduced, and smooth cutting and recycling are guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of semiconductor manufacturing, and in particular relates to an online recycling process and system for cutting waste mortar. Background Art

[0002] Silicon wafers are essential materials for industries like semiconductors. They are made from single-crystal or multicrystalline silicon. These ingots are cast in a casting furnace and then sliced ​​into rods. Slicers use wire sawing to cut the rods into wafers of various sizes. The slicing process requires high-hardness, small-particle silicon carbide (also known as cutting sand) as the primary cutting medium. To ensure uniform distribution of the sand during cutting and to dissipate the significant frictional heat generated, the sand is typically added to a water-soluble cutting fluid (synthesized primarily with polyethylene glycol) in a specific proportion and thoroughly dispersed to create a uniform and stable slurry. This slurry is then used for wafer slicing. The waste slurry contains the cutting fluid, sand, silicon powder, and metallic impurities. Failure to properly dispose of this waste slurry results in significant resource waste, significant environmental pollution, and difficulty reducing the cost of auxiliary materials used in wafer slicing.

[0003] In the existing technology, an offline recycling process is usually adopted to separate various components from waste mortar, and then obtain recycled products through deep processing for recycling. The process is long, occupies a large area, requires large investment in plant equipment, has high recycling costs, consumes a lot of water, generates a large amount of dust and odor at the production site, seriously pollutes the environment, cannot continuously process waste mortar, and has a low recycling rate and poor application performance of the recycled products. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an online recycling process and system for cutting waste mortar, which overcomes the shortcomings of the existing technology.

[0005] The technical solution adopted by the present invention is: an online recycling process for cutting waste mortar, comprising the following steps:

[0006] The waste slurry is subjected to a primary separation to obtain waste cutting fluid and waste cutting sand respectively;

[0007] Purifying the waste cutting fluid to obtain recycled cutting fluid, wherein the recycled cutting fluid and condensed water generated during the purification process can be used for self-cleaning;

[0008] performing secondary separation on the waste cutting sand to obtain recycled cutting sand;

[0009] mixing the recovered cutting fluid and the recovered cutting sand into a recovered mortar;

[0010] New mortar is mixed with the recycled mortar to form cutting mortar.

[0011] Furthermore, the step performs a primary separation on the waste slurry to obtain waste cutting fluid and waste cutting sand, respectively, including:

[0012] Primary preparation, using the cutting fluid clear liquid generated during the waste cutting fluid purification process to prepare the density of the waste mortar;

[0013] In the first stage of separation, the prepared waste slurry is centrifuged to obtain the waste cutting fluid and waste cutting sand respectively.

[0014] Furthermore, the step of purifying the waste cutting fluid to obtain the recovered cutting fluid includes:

[0015] filtration, filtering the waste cutting fluid to obtain the cutting fluid clear liquid;

[0016] Distillation: distilling the clear cutting fluid to obtain the recovered cutting fluid, and generating the condensed water during the distillation process.

[0017] Furthermore, during the filter pressing process, light shielding rate feedback is performed. When the light shielding rate is greater than 10%, it is unqualified and the filter pressing process needs to be repeated.

[0018] Furthermore, during the distillation process, water content feedback is performed. When the water content is greater than 1%, it is unqualified and the distillation process needs to be repeated.

[0019] Furthermore, the step of performing secondary separation on the waste cutting sand to obtain recycled cutting sand includes:

[0020] Secondary preparation, using the cutting fluid clear liquid generated during the waste cutting fluid purification process to prepare the density of the waste cutting sand;

[0021] Secondary separation: centrifugally separating the prepared waste cutting sand to obtain the recovered cutting sand.

[0022] Furthermore, the waste cutting fluid generated in the secondary separation process is purified simultaneously with the waste cutting fluid generated in the primary separation process.

[0023] Furthermore, the step mixes the recovered cutting fluid and the recovered cutting sand into a recovered mortar, and the mixing density of the recovered mortar is the same as the density of the new mortar.

[0024] Furthermore, the step mixes the new mortar with the recycled mortar into cutting mortar, and performs component feedback on the cutting mortar.

[0025] The present invention also provides an online recycling system for waste cutting mortar, comprising:

[0026] Waste mortar separation system, used to separate waste mortar into waste cutting fluid and waste cutting sand;

[0027] A cutting fluid purification system, used for purifying the waste cutting fluid to obtain recycled cutting fluid;

[0028] A recovery and cleaning system for recovering and self-cleaning the recovered cutting fluid and the condensed water generated during the purification of the waste cutting fluid;

[0029] A cutting sand separation system is used to perform secondary separation on the waste cutting sand to obtain recycled cutting sand;

[0030] A mixing system for mixing the recovered cutting fluid and the recovered cutting sand into a recovered mortar;

[0031] A mixing system is used to mix new mortar with the recycled mortar to form cutting mortar.

[0032] The advantages and positive effects of the present invention are as follows: due to the adoption of the above-mentioned technical solution, continuous processing and recycling of waste mortar are achieved through online separation, and the separated recycled cutting fluid and recycled cutting sand are directly used for the reproduction of the slicer for recycling, which simplifies the recycling process, reduces the recycling cost, and reduces pollution to the environment. By blending the recycled mortar and recycled cutting fluid and dynamically blending new sand and new fluid, the stability of the cutting mortar components is ensured, the cutting requirements are met, and the application performance of the recycled product is improved. By using the recycled cutting fluid and condensed water generated during the separation process for self-cleaning and blending, the recycling rate is improved and the production cost is reduced. Through the feedback system, the required temperature and required flow are dynamically adjusted, the linkage ability of the slicing equipment and the liquid supply system is improved, and the smooth progress of cutting and recycling is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features, and advantages of the present invention will become more apparent through a more detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are provided to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and are not intended to limit the present invention. In the drawings, the same reference numerals generally represent the same components or steps.

[0034] Figure 1 The present invention is a flowchart of an online recovery process for waste cutting mortar.

[0035] Figure 2 This is a connection diagram of an online recycling system for waste cutting mortar according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] An embodiment of the present invention provides an online recycling process and system for waste cutting mortar, and the embodiments of the present invention are described below with reference to the accompanying drawings.

[0037] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

[0038] like Figure 1 As shown, an embodiment of the present invention provides an online recycling process for waste cutting mortar, comprising the following steps: performing a primary separation on the waste mortar to obtain waste cutting fluid and waste cutting sand respectively; purifying the waste cutting fluid to obtain recycled cutting fluid, and the recycled cutting fluid and condensed water can be used for recycling and self-cleaning; performing a secondary separation on the waste cutting sand to obtain recycled cutting sand; mixing the recycled cutting fluid and recycled cutting sand into recycled mortar; and mixing new mortar with the recycled mortar into cutting mortar. The cutting mortar can be used directly online for cutting by a slicer. In order to prevent the cutting wire from rusting and affecting the cutting quality, the cutting mortar used in the cutting process cannot contain moisture. Recycled cutting liquid is used to clean the slicer's sand supply pipeline and the entire recovery pipeline. Compared with cleaning with normal cutting fluid, this method can minimize the introduction of moisture and reduce cleaning costs. Condensed water can be used for independent cleaning of related tanks and slicer compartments for maximum recycling.

[0039] In the step, the waste mortar is subjected to a primary separation to obtain waste cutting fluid and waste cutting sand respectively, including a primary mixing and a primary separation. After the slicer discharges the waste mortar, the waste mortar is first buffered. Since the viscosity of the waste mortar is relatively high, in order to facilitate separation, the waste mortar needs to be subjected to a primary mixing, the waste mortar is diluted, and the density of the waste mortar is reduced. In order to reduce production costs, the waste mortar is adjusted with the cutting fluid clear liquid generated during the purification process of the waste cutting fluid. The density of the waste mortar is increased from 1.54 to 1.60 kg / m 3 Adjust to 1.50~1.52kg / m 3After the first-level mixing, the temperature of the waste mortar is controlled at 45-55°C, and then the diluted waste mortar is subjected to a first-level separation. During the first-level separation process, centrifugal separation is used to separate the waste cutting fluid and waste cutting sand and then treat them separately.

[0040] The waste cutting fluid is purified in the step to obtain the recovered cutting fluid, which includes filter pressing and distillation. The separated waste cutting fluid is stored separately, and the temperature of the waste cutting fluid is controlled at 65-75°C, and then filter pressing is performed to improve the purity of the waste cutting fluid and reduce the interference of silicon powder and fine sand formed after cutting the cutting sand on the density of the cutting fluid. The solid filter cake formed after filter pressing is discharged as waste, and its main components are silicon powder and fine sand. After filter pressing, the cutting fluid clear liquid is formed and stored separately. Preferably, the shading rate of the cutting fluid clear liquid is feedback monitored before storage. If the shading rate is greater than 10%, it means that the particle content in the cutting fluid clear liquid is relatively high and unqualified. It needs to be stored separately, and then circulated filter pressing is performed until the shading rate meets the requirements. If the shading rate is ≤10%, it means that the cutting fluid clear liquid is qualified at this time. The cutting fluid clear liquid is stored separately and then distilled and purified. The cutting fluid clear liquid can be used for the first-level preparation of waste sand mortar. Before distillation, the temperature of the cutting fluid clear liquid is controlled at 100-120°C. During the distillation process, the pressure can be reduced and the boiling point of water can be lowered, thereby improving the distillation efficiency. After the clear cutting liquid is distilled, a recovered cutting liquid is formed, and the condensed water generated during the distillation process is stored separately. The condensed water can be recycled for independent cleaning of related tanks and slicer compartments. Preferably, the recovered cutting liquid is subjected to feedback monitoring of the moisture content before storage. If the moisture content is greater than 1%, it means that the moisture content is too high and unqualified at this time, and cyclic distillation is required until the moisture content meets the requirements. If the moisture content is ≤1%, it means that the moisture content of the recovered cutting liquid is qualified at this time and is stored separately. The recovered cutting liquid can be used for cleaning the sand supply pipeline of the slicer and the entire recovery pipeline.

[0041] In the step of performing secondary separation on the waste cutting sand to obtain the recovered cutting sand, the process includes secondary blending and secondary separation. In order to further separate the small amount of waste cutting fluid contained in the waste cutting sand, the waste cutting sand is subjected to secondary blending with the cutting clear fluid, and the waste cutting sand is diluted twice to reduce the density of the waste cutting sand. The density of the waste cutting sand is adjusted to 1.50-1.52 kg / m 3 After secondary conditioning, the waste sand is kept at a temperature of 55-65°C. The diluted waste sand then undergoes secondary separation, where centrifugation is used to separate a small amount of waste cutting fluid from the waste sand. This recovered sand is then stored separately. The separated waste cutting fluid is purified simultaneously with the waste cutting fluid generated during the primary separation process.

[0042] In the step of mixing the recycled cutting fluid and the recycled cutting sand into the recycled mortar, the recycled cutting fluid and the recycled cutting sand stored separately are mixed, and in the mixing process, the recycled mortar is mixed. In order to facilitate the mixing of the recycled mortar with the new mortar, the mixing density of the recycled mortar is the same as that of the new mortar, which is set to 1.53-1.55 kg / m 3 .

[0043] In the step of mixing new mortar and recycled mortar to form cutting mortar, the new mortar and recycled mortar are blended to equal density. Since the new mortar and recycled mortar have the same density, the new mortar and recycled mortar can be blended in any proportion. That is, if there is more recycled mortar, less new mortar will be added; if there is less recycled mortar, more new mortar will be added, provided that the total demand for cutting mortar is met. New mortar is blended from finished new sand and finished new liquid. Before use, the temperature of the mixed cutting mortar is controlled at 15-25°C, and the cutting mortar is subjected to component feedback control before use. The density of the cutting mortar and the particle size distribution of the cutting sand therein are monitored to ensure that the cutting mortar meets the use requirements. The D50 value is an important parameter in the particle size distribution, also known as the median particle size, indicating that in the particle size distribution, 50% of the particles have a particle size smaller than this value, and the other 50% of the particles have a particle size larger than this value. The particle size of the recycled cutting sand will become smaller due to grinding, which will affect the D50 value of the cutting mortar formed after mixing. If the D50 value is too small, it will affect the cutting effect and efficiency. Therefore, component feedback is used to monitor the D50 value of the cutting mortar, and through dynamic mixing of new liquid and new sand, the cutting mortar can meet the use requirements.

[0044] An online recycling system for waste cutting mortar, such as Figure 2 As shown, it includes a waste mortar separation system, a cutting fluid purification system, a recovery and cleaning system, a cutting sand separation system, a blending system, and a mixing system. The waste mortar separation system is used to perform primary separation on the waste mortar to obtain waste cutting fluid and waste cutting sand respectively; the cutting fluid purification system is used to purify the waste cutting fluid to obtain recycled cutting fluid; the recovery and cleaning system is used to recycle the recycled cutting fluid and condensed water generated during the waste cutting fluid purification process for self-cleaning; the cutting sand separation system is used to perform secondary separation on the waste cutting sand to obtain recycled cutting sand; the blending system is used to blend the recycled cutting fluid and recycled cutting sand into recycled mortar; and the mixing system is used to mix new mortar with recycled mortar to form cutting mortar.

[0045] Preferably, the system also includes a feedback system that provides feedback and adjustment of flow and temperature. The feedback system includes a temperature control device and a flow control device. Exemplarily, the temperature control device may be a plate temperature controller or a coil temperature controller. The flow control device includes a proportional valve and a flow meter. By providing the temperature control device and the flow control device, the slicer temperature and cutting flow rate can be adjusted and controlled according to the cutting process.

[0046] Preferably, the recovery and cleaning system includes a water washing system and a liquid washing system. The water washing system uses condensed water for independent cleaning of related tanks and slicer chambers, and the liquid washing system uses recycled cutting fluid for cleaning the slicer sand supply pipeline and the entire recovery pipeline.

[0047] Specifically, the waste mortar separation system includes a waste mortar buffer tank, a first blending tank, and a first-stage centrifuge. After the slicer discharges the waste mortar, it is transferred to the waste mortar buffer tank for buffering and then to the first blending tank for primary blending. The first blending tank is connected to the first clear liquid tank, where it is diluted with cutting fluid to reduce the density of the waste mortar. After primary blending, the waste mortar temperature is controlled at 45-55°C using plate temperature control. The diluted waste mortar is then transferred to the first-stage centrifuge for primary separation, separating the waste cutting fluid and waste cutting sand for separate processing.

[0048] Specifically, the cutting fluid purification system includes a filter press and a distillation system. After separation, the waste cutting fluid is transported to a dirty liquid tank for separate storage. Plate heat exchangers are used to control the temperature of the waste cutting fluid to 65-75°C. Then, a filter press is used for filtration. The solid filter cake formed after filtration is discharged as waste. The resulting clear cutting fluid enters a first clear liquid tank for separate storage. Preferably, a feedback system monitors the shading rate before the clear cutting fluid enters the first clear liquid tank. If the shading rate is unsatisfactory, the clear cutting fluid is stored in a separate turbid liquid buffer tank and then circulated for filtration until the shading rate meets the required level. If the shading rate is satisfactory, the clear cutting fluid enters the first clear liquid tank for storage and then enters the distillation system for distillation and purification. Before distillation, the temperature of the clear cutting fluid is controlled at 100-120°C using plate heat exchangers. During the distillation process, the distillation system is equipped with a negative pressure tank to reduce the pressure and lower the boiling point of water, thereby improving distillation efficiency. After distillation, the clear cutting fluid forms recovered cutting fluid, and the condensed water generated during the distillation process is stored in a condensed water tank. Before storage, the recovered cutting fluid uses a feedback system to monitor its moisture content. If the moisture content is substandard, it undergoes circulating distillation until it meets the required moisture content. If the moisture content is acceptable, it is transferred to the second clear liquid tank for separate storage. The first clear liquid tank is connected to the first blending tank, and the clear cutting fluid can be used to mix and dilute the waste mortar. The condensate tank is connected to the water washing system of the recovery and cleaning system for independent cleaning of the relevant tanks and the slicer chamber. The second clear liquid tank is connected to the liquid washing system of the recovery and cleaning system for cleaning the slicer's sand supply pipeline and the entire recovery pipeline.

[0049] Specifically, the cutting sand separation system includes a primary centrifugal storage tank, a second blending tank, and a secondary centrifuge. The waste cutting sand separated from the waste sand slurry in the primary stage is stored separately in the primary centrifugal storage tank and then transported to the second blending tank for secondary blending to reduce the density of the waste cutting sand for further separation. The second blending tank is connected to the first clear liquid tank, and the cutting liquid in the first clear liquid tank can be used to blend the waste cutting sand. After the secondary blending, the temperature of the waste cutting sand is controlled at 55-65°C using plate temperature control, and the diluted waste cutting sand is then transported to the secondary centrifuge for secondary separation. A small amount of waste cutting liquid is separated from the waste cutting sand and transported to the dirty liquid tank for further processing. The recovered cutting sand is stored separately in the secondary centrifugal storage tank.

[0050] Specifically, the mixing system includes a third mixing tank. The recovered cutting fluid in the second clear liquid tank and the recovered cutting sand in the secondary storage tank are transported to the third mixing tank. In the third mixing tank, the recovered cutting fluid and the recovered cutting sand are mixed and mixed into a recovered mortar. The mixing density of the recovered mortar is the same as that of the new mortar, which is set to 1.53-1.55 kg / m 3 .

[0051] Specifically, the mixing system includes a mixing tank. The prepared recycled mortar is transported to the mixing tank, and new mortar is mixed into the mixing tank based on the total demand for cutting mortar. Preferably, a low liquid level alarm is provided on the mixing tank. When the low liquid level alarm sounds when the recycled mortar is transported to the mixing tank, new mortar is mixed into the mixing tank to meet the demand for cutting mortar. The new mortar is directly mixed in the mixing tank using a new sand system and a new liquid system. The new sand system and the new liquid system directly use finished new sand and finished new liquid for mixing, and the density of the mixed new mortar is the same as that of the recycled mortar. The new mortar and the recycled mortar form the cutting mortar in the mixing tank, and the cutting mortar is transported to the finished product tank. The temperature of the cutting mortar is controlled by a coil in the finished product tank to 15-25°C, and the composition of the cutting mortar is monitored by a feedback system. By dynamically adjusting the new liquid system and the new sand system, the cutting mortar meets the requirements.

[0052] The advantages and positive effects of the present invention are:

[0053] 1. Through online separation, the continuous treatment and recycling of waste mortar is realized, and the separated recycled cutting fluid and recycled cutting sand are directly used in the reproduction of the slicer for recycling, which simplifies the recycling process, reduces the recycling cost, and reduces the pollution to the environment.

[0054] 2. By mixing the recycled mortar and recycled cutting fluid and dynamically mixing the new sand and new fluid, the stability of the cutting mortar components is ensured, the cutting requirements are met, and the application performance of the recycled product is improved.

[0055] 3. By using the recycled cutting fluid and condensed water generated during the separation process for self-cleaning and preparation, the recycling rate is improved and the production cost is reduced.

[0056] 4. Through the feedback system, the required temperature and flow rate are dynamically adjusted to improve the linkage ability of the slicing equipment and the liquid supply system to ensure smooth cutting and recycling.

[0057] The embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It should be noted that any implementations not depicted or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods described in the embodiments; those skilled in the art may easily modify or replace them.

[0058] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An online recycling process for waste cutting mortar, characterized by: The following steps are included: The waste slurry is subjected to a primary separation to obtain waste cutting fluid and waste cutting sand respectively; Purifying the waste cutting fluid to obtain recycled cutting fluid, wherein the recycled cutting fluid and condensed water generated during the purification process can be used for self-cleaning; performing secondary separation on the waste cutting sand to obtain recycled cutting sand; mixing the recovered cutting fluid and the recovered cutting sand into a recovered mortar; New mortar is mixed with the recycled mortar to form cutting mortar.

2. The online recycling process for waste cutting mortar according to claim 1, characterized in that: The step performs a primary separation of the waste slurry to obtain waste cutting fluid and waste cutting sand, respectively, including: Primary preparation, using the cutting fluid clear liquid generated during the waste cutting fluid purification process to prepare the density of the waste mortar; In the first stage of separation, the prepared waste slurry is centrifuged to obtain the waste cutting fluid and waste cutting sand respectively.

3. The online recycling process for waste cutting mortar according to claim 2, characterized in that: The step of purifying the waste cutting fluid to obtain the recovered cutting fluid includes: filtration, filtering the waste cutting fluid to obtain the cutting fluid clear liquid; Distillation: distilling the clear cutting fluid to obtain the recovered cutting fluid, and generating the condensed water during the distillation process.

4. The online recycling process for waste cutting mortar according to claim 3, characterized in that: During the filter pressing process, the light shielding rate feedback is performed. When the light shielding rate is greater than 10%, it is unqualified and the filter pressing process needs to be repeated.

5. The online recycling process for waste cutting mortar according to claim 3 or 4, characterized in that: During the distillation process, water content feedback is performed. When the water content is greater than 1%, it is unqualified and the distillation process needs to be repeated.

6. An online recycling process for waste cutting mortar according to any one of claims 1 to 4, characterized in that: The step of performing secondary separation on the waste cutting sand to obtain recycled cutting sand includes: Secondary preparation, using the cutting fluid clear liquid generated during the waste cutting fluid purification process to prepare the density of the waste cutting sand; Secondary separation: centrifugally separating the prepared waste cutting sand to obtain the recovered cutting sand.

7. The online recycling process for waste cutting mortar according to claim 6, characterized in that: The waste cutting fluid generated in the secondary separation process is purified simultaneously with the waste cutting fluid generated in the primary separation process.

8. An online recycling process for waste cutting mortar according to any one of claims 1 to 4 and 7, characterized in that: In the step, the recovered cutting fluid and the recovered cutting sand are mixed into a recovered mortar, and the mixed density of the recovered mortar is the same as the density of the new mortar.

9. An online recycling process for waste cutting mortar according to any one of claims 1 to 4 and 7, characterized in that: The step mixes new mortar and the recycled mortar into cutting mortar, and performs component feedback on the cutting mortar.

10. An online recycling system for waste cutting mortar, characterized by: include, Waste mortar separation system, used to separate waste mortar into waste cutting fluid and waste cutting sand; A cutting fluid purification system, used for purifying the waste cutting fluid to obtain recycled cutting fluid; A recovery and cleaning system for recovering and self-cleaning the recovered cutting fluid and the condensed water generated during the purification of the waste cutting fluid; A cutting sand separation system is used to perform secondary separation on the waste cutting sand to obtain recycled cutting sand; A mixing system for mixing the recovered cutting fluid and the recovered cutting sand into a recovered mortar; A mixing system is used to mix new mortar with the recycled mortar to form cutting mortar.

Images