Industrial silicon package
By employing an asbestos layer and a cast-in-place layer structure in the industrial silicon bag lining, combined with corundum castable and trace elements, the problems of short service life and leakage of the silicon bag lining have been solved, achieving the effects of ease of use and high safety.
Patent Information
- Application Number
- CN202520257300.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing industrial silicon packaging liners have short service life, are prone to leakage, leading to frequent replacements and safety hazards, and also result in a waste of human and financial resources during use.
It adopts an asbestos layer and a cast-in-place layer structure, with corundum castable refractory as the inner lining. It combines different trace elements and reasonable particle size distribution, and sets expansion joints and expansion grooves to enhance thermal shock resistance and wear resistance, absorb thermal expansion stress, and facilitate disassembly and replacement.
It extends the service life of the silicon-clad lining, eliminates leakage, improves ease of use and safety, and significantly extends the service life of the brick-clad lining.
Smart Images
Figure CN223684439U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metallurgical technique field especially relates to a kind of industrial silicon package. BACKGROUND
[0002] Industrial silicon is also known as metal silicon or crystalline silicon, which is a product formed by high-temperature reaction smelting of silica (SiO2≥99.2%, usually quartzite or pebble) and carbonaceous reducing agent (petroleum coke, washed coal, charcoal, etc.) in a submerged arc furnace. The main component is silicon, with a content of about 98%, and the remaining impurities are iron, aluminum, calcium, etc. It has similar properties to germanium, lead and tin, and can be used in semiconductors, etc. Because the refining process requires high temperature, it has derived a new application - refractory materials.
[0003] Currently, in the smelting silicon industry, the silicon package lining used in masonry is mostly built with clay bricks or high-aluminum bricks. During use, there are many shortcomings and difficulties that are difficult to overcome. Typically, the lining is built with refractory materials, with each layer of clay bricks laid flat on the bottom and side, two layers of high-aluminum bricks laid on the side, one layer of clay bricks laid flat on the wall, and one layer of high-aluminum bricks laid on the side. Finally, a layer of graphite powder or high-aluminum coating is applied to the bottom and wall. The problem with this package lining is that the service life is short, typically 15-25 furnaces. As the number of uses increases, a large amount of slag adheres to the bottom of the package, forming a package bump, reducing the volume. The package must be replaced with a new one, which is short-lived for two reasons. First, due to local burning, the package leaks. Second, it causes waste of manpower and financial resources, and poses a disadvantage to safety production. SUMMARY
[0004] To overcome the shortcomings of the prior art, the utility model provides an industrial silicon package with the advantages of long service life, easy use, easy disassembly and replacement, and solves the problems raised in the background art.
[0005] The utility model provides the following technical scheme: an industrial silicon package, comprising a stone wool layer, a pouring layer is fixedly installed on the inner ring of the stone wool layer, an expansion slot is formed on the outer ring of the pouring layer, a clamping opening is formed on one side of the opening of the stone wool layer, an expansion joint is formed on the inner ring of the pouring layer, and a discharge opening is arranged on the side of the opening of the pouring layer corresponding to the clamping opening.
[0006] Through the above structure, the particle size distribution of the existing castable is changed, and different trace elements are added to further enhance the thermal shock resistance and wear resistance of the material. The silicon package lining built with corundum castable meets the requirements of the refractory castable for the overall pouring of the silicon package lining, eliminates the package leakage, is easy to bake and easy to pour and clean slag. The service life of the brick package lining is improved by several times, which is easy to use and prolongs the service life.
[0007] Preferably, the expansion joint comprises a 5mm expansion joint and a 10mm expansion joint, the inner wall of the pouring layer is uniformly provided with the 5mm expansion joint and the 10mm expansion joint in a linear array, the 5mm expansion joint and the 10mm expansion joint have equal intervals, and the overall height of the expansion joint does not exceed the height of the expansion groove.
[0008] Through the above structural arrangement, by reasonably arranging the 5mm expansion joint and the 10mm expansion joint on the inner surface of the pouring layer, the stress generated by thermal expansion can be effectively absorbed, and the stability of the overall structure is not affected.
[0009] Preferably, the pouring layer is built by corundum castable, and the composition of the pouring layer comprises aggregate, powder, binder and additive.
[0010] Through the above structural arrangement, the high temperature, high pressure and chemical corrosion can be better resisted, so as to prolong the service life of the lining, and the strength, wear resistance and volume stability under the use temperature are improved by adjusting the proportioning of different materials and different components.
[0011] Preferably, the proportioning of the castable is that the aggregate is 68% to 72%, the powder is 18% to 25%, the binder is 15% to 20%, and the ultra-fine powder is 2% to 12%, the particle size of the aggregate is less than 10mm or 5mm, the particle size of the powder is less than 0.088mm, the binder uses aluminate cement, and the composition of the ultra-fine powder is selected according to needs.
[0012] Through the above structural arrangement, the maximum bulk density is achieved through the above reasonable particle grading, so as to enhance the compactness and strength of the material, the proportioning of the powder helps to improve the construction performance and high temperature performance of the castable, and the aluminate cement can not only improve the normal temperature strength, but also ensure the bonding performance of the material under high temperature.
[0013] Preferably, the inner part of the pouring layer contains trace elements such as chromium, magnesium and silicon for improving the corrosion resistance, high temperature performance and high temperature oxidation resistance.
[0014] Through the above structural arrangement, a certain amount of trace elements such as chromium and magnesium are added to the castable of the pouring layer, so as to further strengthen the corrosion resistance and high temperature performance of the material, and silicon can effectively improve the high temperature oxidation resistance.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. The industrial silica package, through the setting of pouring layer, expansion joint and other structures, realizes the prolonging of the service life of the silica package lining, through changing the material ratio of the pouring layer, the pouring layer can better resist high temperature, high pressure and chemical corrosion when facing heat, through the chemical corrosion resistance of the pouring layer, the substances inside the pouring layer will not pollute other substances in the silica package, through the setting of the asbestos layer, the temperature of the pouring layer is kept, the heat of the pouring layer will not be transmitted to the outside through the asbestos layer, and the temperature of the silica package shell reaches an ideal value.
[0017] 2. The industrial silica package, by changing the particle size distribution of the existing castable and adding different trace elements, the thermal shock resistance and wear resistance of the material are further enhanced, the silica package lining built by using corundum castable meets the requirements of the refractory castable for the overall pouring of the silica package lining, eliminates the phenomenon of leakage, and is easy to bake and easy to pour and clean slag, the service life is improved several times compared with the brick package lining, and the effect of facilitating use and prolonging the service life is achieved.
[0018] 3. The industrial silica package, by setting expansion grooves and expansion joints, the stress caused by thermal expansion is absorbed, by setting 5mm expansion joints and 10mm expansion joints at a certain interval distance, the stress caused by thermal expansion of the pouring layer after heating is absorbed, the firmness of the pouring layer after heating is enhanced, by setting the expansion grooves, the thermal expansion of the pouring layer has a redundant space, the expansion grooves provide convenience for maintenance, facilitate the disassembly and replacement of the lining, and have the effects of stress absorption and convenient replacement. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a whole structure schematic view of the utility model;
[0020] Figure 2 It is a whole structure sectional view of the utility model;
[0021] Figure 3 It is an asbestos layer structure sectional view of the utility model;
[0022] Figure 4 It is a pouring layer structure sectional view of the utility model.
[0023] In the drawing: 1, asbestos layer; 11, expansion groove; 12, clamping opening; 2, pouring layer; 21, expansion joint; 211, 5mm expansion joint; 212, 10mm expansion joint; 22, discharge port. DETAILED DESCRIPTION
[0024] With reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0025] Please refer to Figures 1-4 The industrial silicon bag comprises a stone wool layer 1, a pouring layer 2 fixedly installed at an inner ring of the stone wool layer 1, an expansion groove 11 formed at an inner wall of the stone wool layer 1 and located outside a ring of the pouring layer 2, a clamping opening 12 formed at one side of an opening of the stone wool layer 1, and an outlet 22 provided at one side of the opening of the pouring layer 2 and located at a position corresponding to the clamping opening 12.
[0026] Please refer to Figures 1-4 The expansion joint 21 comprises a 5mm expansion joint 211 and a 10mm expansion joint 212, and the inner wall of the pouring layer 2 is linearly arrayed and uniformly provided with the 5mm expansion joint 211 and the 10mm expansion joint 212, the 5mm expansion joint 211 and the 10mm expansion joint 212 are equally spaced, and the overall height of the expansion joint 21 does not exceed the height of the expansion groove 11.
[0027] Please refer to Figures 1-4 The pouring layer 2 is built by corundum castable, which can better resist high temperature, high pressure and chemical corrosion, thereby prolonging the service life of the inner lining.
[0028] Please refer to Figures 1-4 The components of the pouring layer 2 are composed of aggregate, powder, binder and additive, and the strength, wear resistance and volume stability under the use temperature are improved by adjusting the proportioning of different materials and different components.
[0029] Please refer to Figures 1-4 The proportioning of the castable is as follows: aggregate 68%~72%, powder 18%~25%, binder 15%~20%, and ultra-fine powder 2%~12%. The particle size of the aggregate is less than 10mm or 5mm, the particle size of the powder is less than 0.088mm, the binder uses aluminate cement, and the composition of the ultra-fine powder is selected according to the requirement.
[0030] Please refer to Figures 1-4 The pouring layer 2 contains trace elements such as chromium, magnesium and silicon to improve the corrosion resistance, high temperature performance and high temperature oxidation resistance, and a certain amount of trace elements such as chromium and magnesium are added to the castable of the pouring layer 2 to further strengthen the corrosion resistance and high temperature performance of the material, and silicon can effectively improve the high temperature oxidation resistance.
[0031] Through the above reasonable particle size distribution, the maximum bulk density is achieved to enhance the density and strength of the material, and the proportion of the powder helps to improve the construction performance and high temperature performance of the castable. The aluminate cement can not only improve the normal temperature strength, but also ensure the bonding performance of the material at high temperature.
[0032] The above structure proportion can achieve:
[0033] Bulk density (g / cm³): 110℃×24h: 3.1;
[0034] Linear change rate (%): 1350℃×3h: -0.5~+0.5;
[0035] Flexural strength MOR (MPa): 110℃×24h: ≥7; 1350℃×3h: ≥10;
[0036] Compressive strength CCS (MPa): 110℃×24h: ≥40; 1350℃×3h: ≥90.
[0037] During the first heating process of the castable, dehydration will occur between 50℃~200℃, and two times of volume shrinkage will occur during sintering at 900℃~1000℃. Heating in other ranges will make the castable expand. After the first heating, the castable usually will not shrink again. Therefore, an expansion joint 21 should be provided after casting and sintering to avoid expansion after heating, so as to make the structure of the casted layer 2 unstable.
[0038] Therefore, the array of 5mm expansion joints 211 and 10mm expansion joints 212 avoids the expansion of the casted layer 2 when heated, which causes the structure of the casted layer 2 to be unstable. When the casted layer 2 expands when heated, the outer surface of the casted layer 2 will extend outward. The expansion groove 11 is a reserved groove for the expansion of the casted layer 2. The remaining space makes the casted layer 2 easy to expand when heated. When the casted layer 2 expands, its inner surface will also expand. Therefore, the 5mm expansion joints 211 and 10mm expansion joints 212 absorb the stress caused by thermal expansion when the casted layer 2 expands. By providing the expansion groove 11, a certain allowance is provided for maintenance, which facilitates the disassembly and replacement of the inner lining.
[0039] By reasonably providing the 5mm expansion joints 211 and 10mm expansion joints 212 on the inner surface of the casted layer 2, the stress generated by thermal expansion can be effectively absorbed, and the stability of the overall structure is not affected.
[0040] Through the reasonable arrangement of the structure, by changing the particle size distribution of the castable, using corundum castable to build the inner lining of the silicon package, the leakage of the package is eliminated, and the package is easy to bake, easy to pour and clean slag, easy to disassemble and replace, and the service life of the wall brick package lining is improved several times.
Claims
1. A bag for industrial silicon comprising an asbestos layer (1), characterized in that: The inner circle of the asbestos layer (1) is fixedly installed with a pouring layer (2), the inner wall of the asbestos layer (1) is provided with an expansion slot (11) at the outer circle of the pouring layer (2), the asbestos layer (1) is provided with a clamping opening (12) at one side of the opening, the inner circle of the pouring layer (2) is provided with an expansion joint (21), and the pouring layer (2) is provided with a discharge port (22) at one side of the opening corresponding to the position of the clamping opening (12).
2. A silicon ingot package according to claim 1, wherein: The expansion joint (21) comprises 5mm expansion joints (211) and 10mm expansion joints (212), the inner wall of the pouring layer (2) is uniformly provided with the 5mm expansion joints (211) and the 10mm expansion joints (212) in linear array, the 5mm expansion joints (211) and the 10mm expansion joints (212) are equally spaced, and the overall height of the expansion joint (21) does not exceed the height of the expansion slot (11).
3. A silicon ingot package according to claim 2, wherein: The pouring layer (2) is built by using corundum castable.