Efficient resourceful treatment method for waste aluminum silicon carbide carbon bricks
Through technical steps such as dry and wet sorting, multi-component segmented flotation and tail slurry cross reflux, combined with the use of ultrasonic waves and spiral chutes, the problem of multi-component recycling and impurities in scrap aluminum silicon carbide carbon bricks is solved, and efficient recycling and resource processing is achieved.
Patent Information
- Application Number
- CN202510434158.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2025-06-17
AI Technical Summary
It is difficult to efficiently recover multiple components in traditional treatment methods, and there is a problem that low-density clay impurities are difficult to float, resulting in waste of resources and environmental pressure.
Technical steps such as dry sorting, wet multi-component sorting, multi-component segmented flotation and tail slurry cross-reflow are adopted, and the use of ultrasonic waves and spiral chutes are combined to achieve efficient recycling of graphite, silicon carbide and alumina.
The recycling of high-purity graphite and silicon carbide is achieved, reducing impurity accumulation, improving resource utilization, reducing energy and water resources consumption, and significantly reducing tailings treatment costs.
Smart Images
Figure CN120155294A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of comprehensive utilization of metallurgy and refractories, and particularly to a method for efficiently recycling waste aluminum silicon carbide carbon bricks. Background Art
[0002] Aluminum silicon carbide carbon bricks are a kind of high-performance composite bricks, which are widely used in high-temperature industrial environments such as steelmaking furnaces, glass melting furnaces and ceramic kilns. During use, the aluminum silicon carbide carbon bricks will gradually wear and age and be discarded, and it is urgent to find an economically feasible resource utilization way. Waste aluminum silicon carbide carbon bricks contain multiple components such as graphite, silicon carbide, alumina, silicate and clay, and have two major treatment difficulties: the high-hardness silicon carbide is difficult to break, and the clay impurities are difficult to float. The hardness of this material varies greatly, among which the hardness of silicon carbide is very high and the graphite is relatively soft; its density difference is also special, and there are also difficult-to-float clay impurities. These characteristics do not often appear simultaneously in traditional mineral processing, resulting in no reference process flow. Traditional treatment is mostly limited to simple stacking or landfilling, wasting resources and causing environmental pressure.
[0003] In recent years, although certain research progress has been made in the single-component recovery technology for graphite and silicon carbide, the research on the recovery of mixed minerals containing multiple components is relatively less. In particular, the low-density and difficult-to-float clay impurities in aluminum silicon carbide carbon bricks are likely to interfere with the flotation process, making it difficult to obtain high-purity graphite or silicon carbide. This technical bottleneck limits the efficiency and economy of the resource treatment of waste aluminum silicon carbide carbon bricks. Therefore, developing a treatment process that can efficiently recover multiple components and reduce the accumulation of impurities at the same time is of great significance for realizing the resource treatment and environmental friendliness of aluminum silicon carbide carbon bricks. Summary of the Invention
[0004] The purpose of the present invention is to provide a method for efficiently recycling waste aluminum silicon carbide carbon bricks to solve the problems raised in the background art. The present invention combines key technical steps such as dry separation and tailing rejection, wet multi-component separation and tailing rejection, multi-component staged flotation and cross-reflux of tailing slurry, and can effectively recover multiple components such as graphite, silicon carbide and alumina in waste aluminum silicon carbide carbon bricks.
[0005] To achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A method for efficiently recycling waste aluminum silicon carbide carbon bricks, comprising the following steps:
[0007] S1. Preparation process:
[0008] After the raw ore is crushed by a jaw crusher, it enters a double-deck relaxation screen; the double-deck relaxation screen includes an upper sieve plate and a lower sieve plate, wherein the oversize material on the upper sieve plate returns to the jaw crusher for continuous crushing; the oversize material on the lower sieve plate enters a high-pressure roller mill, and the undersize material enters the next process; the high-pressure roller mill crushes and grinds the material, and the ground material returns to the double-deck relaxation screen for continuous screening, forming a closed circuit;
[0009] S2. Dry separation and tailing rejection:
[0010] The ground material is separated by a vibrating fluidized bed to obtain tailings and rough concentrate products; the tailings contain alumina and silicate components; the rough concentrate contains clay, graphite, silicon carbide, alumina and other fine oxides;
[0011] S3. Fine grinding of rough concentrate:
[0012] The rough concentrate is further finely ground to -200 mesh accounting for 80% - 90% by a ball mill, so that graphite, silicon carbide and alumina are fully monomerically dissociated;
[0013] S4. Ultrasonic pretreatment for slime removal:
[0014] The finely ground product is formulated into pulp, and ultrasonic waves and a spiral chute are used in combination to separate low-density difficult-to-float impurities, preliminarily remove difficult-to-float clay and fine oxides, reduce subsequent separation interference, and the low-density difficult-to-float impurities can be directly used for brick making or deep treatment;
[0015] S5. Wet classification and tailing rejection:
[0016] The pulp is sorted by a spiral chute and a shaking table in sequence to obtain light products (mainly graphite), medium products (mainly silicon carbide) and heavy products (mainly alumina, etc.), wherein the heavy products are directly used for brick making or deep treatment;
[0017] S6. Flotation of light products to select graphite:
[0018] The light products are subjected to ultrasonic pulp conditioning treatment and a sectional flotation process is used to select graphite. The collector is EKOFOL, the inhibitor is water glass or sodium hexametaphosphate, and the frother is pine oil;
[0019] S7. Flotation of medium products to select silicon carbide:
[0020] The medium products are subjected to ultrasonic pulp conditioning treatment and a sectional flotation process is used to select silicon carbide. The collector is an amine collector (DEA, TEA or CTAB), the inhibitor is water glass or sodium hexametaphosphate, and the frother is pine oil;
[0021] S8. Tail pulp reflux and cross separation:
[0022] The primary scavenging tail slurries after graphite flotation and silicon carbide flotation are cross-refluxed respectively, where the graphite flotation tail slurry is refluxed to silicon carbide flotation, and the silicon carbide flotation tail slurry is refluxed to graphite flotation; the impurities in the secondary scavenging tail slurry are deeply utilized after impurity removal or used for brick making, realizing the efficient recovery of graphite and silicon carbide and avoiding secondary pollution;
[0023] S9. Brick making from tailings:
[0024] The separated tailings are mixed with a binder, formed and sintered for preparing refractory bricks or building bricks.
[0025] Preferably, in S1, the feed particle size of the jaw crusher < 50 mm; the aperture of the upper sieve plate is 10 - 12 mm, and the aperture of the lower sieve plate is 1 - 2 mm; the roll pressure of the high-pressure roll mill is 10 - 15 MPa, the feed particle size < 10 mm, and the discharged particle size after crushing ≤ 2 mm.
[0026] Preferably, in S2, the air flow velocity of the vibrating fluidized bed is 2 - 5 m / s, and the vibration frequency is 10 - 50 Hz, for realizing dry separation and removing alumina and silicate components.
[0027] Preferably, when the pulp in S4 contains too much clay or fine oxides, it enters the secondary separation module of the shaking table after ultrasonic dispersion or flocculation to reduce the accumulation of impurities in the main process and enhance resource utilization.
[0028] Preferably, in S5, the concentration of the pulp entering the spiral chute and the shaking table is 20% - 30%; the flow velocity of the spiral chute is 2 - 4 m / s; the vibration frequency of the shaking table is 15 - 30 Hz.
[0029] Preferably, in S6, during the flotation of the light product, the dosage of the collector EKOFOL is 300 - 500 g / t, and the pulp concentration is 20% - 30%; after one rough selection, multiple fine selections, and multiple scavenging (one rough, multiple fine, and multiple scavenging), the carbon content of the graphite concentrate is not less than 90%.
[0030] Preferably, in S7, the ultrasonic pulp conditioning frequency is 20 - 40 kHz, for strengthening the dissociation of silicon carbide and impurities; the dosage of the amine collector (DEA, TEA or CTAB) is 50 - 100 g / t.
[0031] Preferably, in S8, the primary scavenging tail slurry of graphite flotation is refluxed to S7 to prevent the loss of silicon carbide components in the graphite process; the primary scavenging tail slurry of silicon carbide flotation is refluxed to S6 to prevent the loss of graphite components in the silicon carbide process; the impurities in the secondary scavenging tail slurry are deeply utilized after impurity removal or directly incorporated into the tailings for brick making.
[0032] Preferably, when making bricks with the tailings described in S9, the mass ratio of tailings to binder is 90:10 to 95:5, the sintering temperature is 1200 to 1400 °C, and the sintering time is 2 to 4 h.
[0033] Compared with the prior art, the present invention provides an efficient resource treatment method for waste aluminum silicon carbide carbon bricks, having the following beneficial effects:
[0034] By establishing an integrated process of front-end dry tailing rejection + ultrasonic chute clay removal + wet multi-component gravity separation + multi-component staged flotation + tail slurry cross reflux + tailings brick making, the present invention can effectively recover high-purity graphite and silicon carbide and avoid the accumulation of impurities such as low-density and difficult-to-float clay and fine oxides. The present invention not only improves the resource utilization rate, reduces the consumption of energy and water resources, but also significantly reduces the tailings treatment cost, having significant economic and social benefits. Through the present invention, waste aluminum silicon carbide carbon bricks can be resourcefully and harmlessly treated, meeting the development requirements of green manufacturing and circular economy. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings involved in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only schematic illustrations of some embodiments of the present invention, and those skilled in the art can also construct other forms of drawings based on these drawings without creative efforts.
[0036] Figure 1 It is the overall flowchart of an efficient resource treatment method for waste aluminum silicon carbide carbon bricks proposed by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0037] The present invention will be further described below with reference to specific embodiments, and the advantages and features of the present invention will become clearer with the description. However, these embodiments are exemplary only and do not constitute any limitation to the scope of the present invention. Those skilled in the art should understand that the details and forms of the technical solutions of the present invention can be modified or replaced without departing from the spirit and scope of the present invention, but such modifications and replacements all fall within the protection scope of the present invention.
[0038] The present invention provides an efficient resource treatment method for waste aluminum silicon carbide carbon bricks, which combines multiple steps such as closed-circuit high-pressure roller grinding, dry separation for tailing discharge, ultrasonic or flocculation treatment of clay impurities, wet separation for tailing discharge, and wet sectional flotation. Through tail slurry reflux and cross separation, the loss of valuable components can be effectively reduced. At the same time, an impurity treatment module is set up to solve the problem of the accumulation of low-density and difficult-to-float impurities. The present invention realizes the high-purity recovery of graphite and silicon carbide, makes full use of tailings, reduces energy consumption, water resource consumption and tailing treatment cost, thus realizing the resource treatment and harmless treatment of waste aluminum silicon carbide carbon bricks.
[0039] Firstly, the present invention forms a double closed circuit by using a jaw crusher, a high-pressure roller mill and a double-layer relaxation sieve to preliminarily crush and grind the raw materials, and the particle size of the materials is stably controlled at D80≤2mm by the high-pressure roller mill. Subsequently, the tailings rich in aluminum oxide, silicate, etc. are removed by vibrating fluidized bed dry separation to reduce the wet treatment amount. After further ball milling and fine grinding of the dry concentrate, an ultrasonic and chute combination is introduced to remove difficult-to-float impurities such as clay and fine oxides. The preliminary separation and enrichment of graphite, silicon carbide and aluminum oxide components can be realized by wet gravity separation of a spiral chute and a shaking table. For graphite and silicon carbide, "multi-stage flotation + ultrasonic pulp conditioning" is adopted respectively, and then the tail slurry of the first scavenging is cross-refluxed to avoid the repeated circulation of valueless mud or metal oxides, and at the same time, the graphite or silicon carbide in their respective processes is fully recovered to achieve high recovery rate and relatively high concentrate quality. Finally, the tailings are mixed with clay-like impurities and then made into refractory or building bricks by high-temperature sintering, realizing the efficient recovery of graphite and silicon carbide and the comprehensive reuse of tailings. This process has the advantages of simple process, low energy consumption, small flotation interference, high product purity and zero waste treatment, and has broad application prospects in industrial promotion.
[0040] The following will illustrate the efficient resource treatment method for waste aluminum silicon carbide carbon bricks proposed by the present invention in combination with relevant drawings and specific examples, and the specific content is as follows.
[0041] Example 1:
[0042] Please refer to Figure 1 , the present invention provides an efficient resource treatment method for waste aluminum silicon carbide carbon bricks, including the following content:
[0043] 1. Raw materials and sources
[0044] The raw materials used in this example are taken from the waste aluminum silicon carbide carbon bricks of an aluminum electrolysis plant. After long-term service, the bricks contain a relatively high proportion of graphite (C), silicon carbide (SiC), some aluminum oxide (Al₂O₃), and clay and silicate impurities. About 50 kg of bricks are sampled, and after appearance inspection and XRD analysis, the main components and approximate contents are shown in Table 1:
[0045] Table 1 Main components and contents of raw materials (mass fraction %)
[0046]
[0047] Note: The specific components will vary depending on the process of the aluminum electrolysis plant and the service time of the bricks.
[0048] 2. Preparation process
[0049] Pretreatment
[0050] First, use a jaw crusher to crush the bricks to D80≈15mm; then send the crushed material into a double-deck relaxation screen (the upper sieve plate has a pore size of 12mm, and the lower sieve plate has a pore size of 2mm). The oversize material on the upper sieve plate is returned to the jaw crusher for re-crushing; the oversize material on the lower sieve plate is sent to a high-pressure roller mill for grinding; the undersize material on the lower sieve plate enters the next process.
[0051] Closed circuit of high-pressure roller grinding
[0052] The roller pressure of the high-pressure roller mill is 10 - 15MPa, the feed particle size is <10mm, and the discharge D80 = 1 - 2mm;
[0053] The material after grinding is returned to the double-deck relaxation screen for circulation, so that the final particle size of all materials is ≤2mm.
[0054] In this link, through the cooperation of the jaw crusher + relaxation screen + high-pressure roller mill, a double closed circuit is formed, which can effectively deal with high-hardness components such as silicon carbide and avoid excessive crushing of soft graphite. Thus, the particle size of the material is stabilized in the ideal range, providing suitable raw material conditions for subsequent dry separation and ultrasonic clay removal, and achieving the effect of more crushing and less grinding, taking into account both energy consumption and efficiency.
[0055] 3. Dry separation and tailing rejection
[0056] Send the material with a particle size ≤2mm into a vibrating fluidized bed, with an air flow velocity of about 3 - 5m / s and a vibration frequency of 10 - 50Hz; separate 20 - 25% of the tailings (rich in alumina and silicate), and the concentrate contains graphite, silicon carbide and some alumina. Carry out component analysis of the tailings components by combining XRD and XRF. The results show that the alumina content reaches ≥60%, which can be directly mixed with a binder to make refractory bricks or building bricks.
[0057] 4. Fine grinding of the concentrate
[0058] Put about 40kg of the concentrate obtained from the vibrating fluidized bed into a ball mill, use zirconia balls or ceramic balls as the medium, the pulp concentration is 30%, and the grinding time is 30 - 60min; conduct particle size detection on the discharge, -200 mesh accounts for 80% - 90%, which can fully dissociate the components of graphite, SiC, and Al₂O₃, laying a foundation for subsequent clay removal and wet multi-component gravity separation.
[0059] 5. Ultrasonic gravity separation to remove clay
[0060] The finely ground product is made into pulp, and the "ultrasonic + chute" combination is used to first separate low-density difficult-to-float impurities, especially clay and fine oxides; the ultrasonic frequency can be 20 - 40 kHz, and the treatment time is about 1 - 5 minutes; the separated light clay impurities can be directly incorporated into the brick-making tailings or further utilized in depth to reduce their interference in subsequent separations.
[0061] This step can significantly reduce the slime effect in subsequent gravity classification and flotation processes and improve the separation environment of graphite and silicon carbide.
[0062] 6. Wet classification and tailing rejection
[0063] The concentration of the ground pulp is 20% - 30%. It is pre-separated by a spiral chute (flow rate 2 - 4 m / s) and then finely separated by a shaking table (vibration frequency 15 - 30 Hz); light products (graphite ≥ 70%), medium products (silicon carbide ≥ 65%) and heavy products (aluminum oxide, silicate, etc.) are obtained. The heavy products are directly used for brick-making or further processed in depth. At this time, the grades of both pulps have been greatly improved, facilitating subsequent flotation operations.
[0064] 7. Flotation of light products to select graphite
[0065] The flotation conditions are as follows: the concentration of the graphite pulp is 20% - 30%, pH ≈ 7 - 8; the ultrasonic conditioning frequency is 20 - 40 kHz to enhance dissociation; the collector EKOFOL is 300 - 500 g / t, the inhibitor (sodium silicate or sodium hexametaphosphate) is 200 - 400 g / t, and the frother pine oil is 30 - 60 g / t; after roughing the graphite, it is further subjected to two-stage cleaning and one-stage scavenging to ensure the recovery rate. After treatment, the carbon content of the graphite concentrate is ≥ 90%, and the tailing pulp of the first-stage scavenging is recycled to the silicon carbide flotation stage to recover the possibly entrained silicon carbide.
[0066] 8. Flotation of medium products to select silicon carbide
[0067] The flotation conditions are as follows: the pH of the pulp is adjusted to 9 - 10, and the ultrasonic conditioning is also 20 - 40 kHz; the collector: amines (such as DEA, TEA or CTAB) is 50 - 100 g / t, the inhibitor (sodium silicate or sodium hexametaphosphate) is 200 - 300 g / t, and the frother pine oil is 30 - 60 g / t; after roughing, a SiC rough concentrate is obtained, and two-stage cleaning and two-stage scavenging are carried out to improve the recovery rate. The purity of the silicon carbide concentrate is ≥ 97%, and the remaining tailing pulp contains very small amounts of graphite, clay or aluminum oxide impurities.
[0068] 9. Tailings reflux and cross separation
[0069] In the flotation stage of the present invention, only the tailing pulp of the "first-stage scavenging" is cross-refluxed:
[0070] The tail slurry from the first scavenging flotation of graphite is recycled to the roughing stage of the intermediate product for flotation of silicon carbide to prevent the loss of residual silicon carbide entrained in the graphite process; the tail slurry from the first scavenging flotation of silicon carbide is recycled to the roughing stage of the intermediate product for flotation of graphite to prevent the loss of graphite entrained in the silicon carbide process.
[0071] As for most of the tail slurry from the second scavenging flotation, which are already difficult-to-float or valueless impurities such as clay and silicate residues, they can be directly incorporated into the tailings for brick-making or used in depth after flocculation / ultrasonic dispersion. Through this staged recycling and staged tail discharge, the target components can be maximally recovered and the valueless impurities can be prevented from circulating repeatedly.
[0072] 10. Tailings for brick-making
[0073] Take tailings and a binder (such as clay or a low-temperature binder) in a mass ratio of 90:10 to 95:5 and mix them evenly; after pressing and forming, sinter at 1200 - 1400 °C for 2 - 4 hours; the bricks obtained have a room-temperature compressive strength of more than 35 MPa, meeting the requirements of general refractory bricks or building bricks.
[0074] As described above, only the preferred specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.
Claims
1. A method for efficiently recycling waste aluminum silicon carbide carbon bricks, characterized in that: The following steps are involved: S1. Preparation process: After the raw ore is crushed by the jaw crusher, it enters the double-layered relaxation screen; the double-layered relaxation screen includes an upper screen plate and a lower screen plate, wherein the screened material on the upper screen plate returns to the jaw crusher for further crushing; The material on the lower screen plate enters the high-pressure roller mill, and the material under the screen enters the next process; the high-pressure roller mill crushes the material, and the ground material returns to the double-layer relaxation screen for further screening, forming a closed loop; S2, dry sorting and discarding: The ground material is sorted by a vibrating fluidized bed to obtain tailings and coarse concentrate products; the tailings contain alumina and silicate components; the coarse concentrate contains clay, graphite, silicon carbide, alumina and other fine oxides; S3, fine grinding of coarse concentrate: The coarse concentrate is further finely ground to -200 mesh with a ball mill, accounting for 80% to 90%, so that graphite, silicon carbide and alumina are fully separated; S4, ultrasonic pretreatment desludging: The finely ground product is made into ore pulp, and the combination of ultrasonic wave and spiral chute is used to separate low-density and difficult-to-float impurities, preliminarily remove difficult-to-float clay and fine oxides, and reduce subsequent sorting interference. Low-density and difficult-to-float impurities can be directly used for brick making or deep processing; S5, wet classification and tailing: The ore pulp is separated by a spiral chute and a shaking table to obtain light products, medium products and heavy products. The heavy products are directly used for brick making or deep processing. S6. Light product flotation to select graphite: Ultrasonic slurry treatment is performed on the light product and a segmented flotation process is used to select graphite. The collector is EKOFOL, the inhibitor is water glass or sodium hexametaphosphate, and the foaming agent is pine oil. S7, flotation of intermediate products to select silicon carbide: The intermediate product is subjected to ultrasonic slurry treatment and silicon carbide is selected by segmented flotation process, the collector is an amine collector, the inhibitor is water glass or sodium hexametaphosphate, and the foaming agent is pine oil; S8, tailings reflux and cross separation: The tailings of the first scavenging slurry after graphite flotation and silicon carbide flotation are cross-circulated respectively, wherein the tailings of graphite flotation are circulated to silicon carbide flotation, and the tailings of silicon carbide flotation are circulated to graphite flotation; the impurities of the tailings of the second scavenging slurry are deeply utilized after impurity removal or used for brick making, so as to realize the efficient recovery of graphite and silicon carbide and avoid secondary pollution; S9, Tailings Brick Making: The separated tailings are mixed with a binder, molded and sintered to make refractory bricks or building bricks.
2. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1 is characterized in that: The feed particle size of the jaw crusher in S1 is less than 50 mm; the aperture of the upper sieve plate is 10-12 mm, and the aperture of the lower sieve plate is 1-2 mm; the roller pressure of the high-pressure roller mill is 10-15 MPa, the feed particle size is less than 10 mm, and the output material D 80≤2 mm after crushing.
3. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1 is characterized in that: The air flow velocity of the vibrating fluidized bed in S2 is 2 to 5 m / s, and the vibration frequency is 10 to 50 Hz, which is used to achieve dry sorting and remove alumina and silicate components.
4. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1 is characterized in that: When the slurry described in S4 contains too much clay or fine oxides, it enters the shaking table secondary sorting module after ultrasonic dispersion or flocculation to reduce the accumulation of impurities in the main process and enhance resource utilization.
5. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1 is characterized in that: The concentration of the ore pulp entering the spiral chute and the shaking table in S5 is 20% to 30%; the flow rate of the spiral chute is 2 to 4 m / s; and the vibration frequency of the shaking table is 15 to 30 Hz.
6. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1, characterized in that: During the flotation of the light product in S6, the amount of the collector EKOFOL is 300-500 g / t, and the pulp concentration is 20%-30%. After one roughing, multiple cleaning and multiple scavenging, the carbon content of the graphite concentrate is not less than 90%.
7. The method for efficiently recycling waste aluminum carbide carbon bricks according to claim 1, characterized in that: The frequency of ultrasonic slurry adjustment in S7 is 20-40 kHz, which is used to enhance the dissociation of silicon carbide and impurities; the dosage of the amine collector is 50-100 g / t.
8. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1, characterized in that: The tailings of the first scavenging of graphite flotation in S8 are returned to S7 to prevent the loss of silicon carbide components in the graphite process; the tailings of the first scavenging of silicon carbide flotation are returned to S6 to prevent the loss of graphite components in the silicon carbide process; the impurities in the tailings of the second scavenging are deeply utilized after decontamination or directly incorporated into tailings for brick making.
9. The method for efficiently recycling waste aluminum silicon carbide carbon bricks according to claim 1, characterized in that: When the tailings are used to make bricks as described in S9, the mass ratio of tailings to binder is 90:10 to 95:5, the sintering temperature is 1200 to 1400°C, and the sintering time is 2 to 4 hours.