CN115945669B

CN115945669B - Impact-resistant long-service-life non-sticky aluminum heat-insulation launder

Info

Publication number: CN115945669B
Application number: CN202310067346.2A
Authority: CN
Inventors: 马超; 刘海峰; 武国春; 梁鑫; 白帮伟; 张宏仁; 李春雨; 王巍; 谢理明
Original assignee: CITIC Dicastal Co Ltd
Current assignee: CITIC Dicastal Co Ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2024-01-05
Anticipated expiration: 2043-01-29
Also published as: CN115945669A

Abstract

The utility model provides a high impact long-life non-stick aluminium heat preservation chute, includes the body, and the body includes stress expansion gap, prestressing force layering, gusset, casing, soft heat preservation casting material, the lining, the chute masonry material section divide multilayer structure, has lining and soft heat preservation casting material and casing to arranging in proper order from interior to exterior. The invention solves the historical problems of firm aluminum slag adhesion of the aluminum liquid flow groove, short service life and high maintenance and repair frequency, and speeds up the steps of the aluminum industry which are integrated into the information age.

Description

Impact-resistant long-service-life non-sticky aluminum heat-insulation launder

Technical Field

The invention relates to the technical field of aluminum alloy casting, in particular to an impact-resistant long-service-life non-sticking aluminum heat-insulation launder.

Background

The electrolytic aluminum, smelting and standing refining furnace and the like are mostly required to be provided with aluminum receiving and discharging launders, and the launder part is not core equipment of aluminum production, but is an auxiliary device necessary for starting up and down in the aluminum liquid production flow, and the refractory material used by the device historically and consistently is mainly a refractory material cast or built by an alumina-silica system, and has the defect of cracking in hundred percent as long as the refractory material is put into use. The rate of crack gap increase is proportional to the frequency of use, and the very fast damage has a short life and requires frequent maintenance and replacement. In addition, the aluminum slag is firmly bonded, the chemical and physical properties of most components in the material are the same as those of the oxidizing slag of the aluminum liquid, the components in the same part are aluminum oxide, the microscopic flocculent structure of the aluminum oxide is connected with the aluminum oxide of the microscopic flocculent structure in a same way, the bonding firmness of the oxidizing slag of the aluminum liquid and the launder wall is determined on a theoretical level, the viscosity of the aluminum liquid is low, the wettability of the aluminum liquid is strong, the aluminum slag is formed by oxidizing the aluminum liquid which infiltrates into the surface of the alumina-silica refractory material into slag, the effect similar to flocculent alumina plating of flocculent alumina film is achieved, the mechanical strength of the flocculent alumina film is larger than that of the launder wall formed by casting or building of the alumina-silica system, and the metal aluminum is compounded in the oxide which is incomplete in an incomplete oxidation state, so that the hardness is the same as that the hardness of the launder wall base material, the toughness is greatly exceeding that of the launder wall base material, and the base material is extremely difficult to clean after bonding, if the base material is cleaned, the base material is torn off part in the launder part. Therefore, the existing launder is frequently cleaned and never cleaned, the situation is changed without being considered in the industry since the aluminum manufacturing production enters the large-scale industrial production, the reason for the change is not changed, or the alumina-silica refractory is the oldest and cheapest type of ancient refractory used for thousands of hundred years, which is most commonly used by craftsmen, and the serious problem is that the technical prejudice in the industry is considered as a natural law phenomenon and desertification, the situation is adopted until the die casting technology is born in the electrolytic aluminum, and the problem that the rest is not solved until now due to the technical limitation or technical prejudice is solved. The mechanism that the launder is extremely easy to crack and damage and the service life is short is that the launder is in an intermittent working mode, when the launder is used, aluminum liquid flows through, the inner surface of the launder wall is heated and expanded at first, the heat outside the launder wall is not conducted to the outside and is not expanded, the temperature difference between the inside and the outside forms asynchronous expansion, and brittle aluminum oxide-silicon oxide system inevitably generates asynchronous change of crack balance geometric dimension outside the launder wall. And the same is true. After the aluminum liquid flows through the aluminum liquid flow groove wall, the inner surface of the aluminum liquid flow groove wall is firstly cooled, the inner part in the middle of the heated flow groove wall is firstly shrunk, heat conduction in a certain time is needed for cooling and shrinking, the unsynchronized change of the geometric dimensions of the inner part and the inner surface inevitably leads to the unsynchronized change of the geometric dimensions of the flow groove wall, the crack expansion is repeated until the aluminum liquid can be immersed into the crack for reoxidation expansion, the crack is repeatedly expanded, and finally the flow groove wall is broken and damaged. The rate of damage is proportional to the frequency of the flow through the aluminium bath. In a word, no physical phase without cracking furnace materials is regarded as a natural law in the industry, and the problems of serious aluminum sticking slag, short service life and high maintenance and repair frequency of the existing aluminum liquid flow groove cannot be thoroughly solved from ancient times due to historical technical limitations or prejudices.

Aiming at the historical technical problems of the aluminum liquid flow groove, the invention particularly provides the aluminum liquid flow groove with a composite structure, and the aluminum liquid flow groove is expected to thoroughly solve the technical problems of serious aluminum sticking slag, short service life and high maintenance and repair frequency of the existing aluminum liquid flow groove. The technical problem of the aluminum liquid flow groove is solved, namely, the electrolytic aluminum, the smelting aluminum and the casting aluminum are extremely high-consumption electric energy industry. The aluminum industry, nonferrous metallurgy, rare earth and steel tetramants commonly consume more than half of energy supply of the whole country each year since China enters the industrial era, especially coal resources are almost divided into power and tetramants, and the low carbon and carbon neutralization are the necessary demands for human life at present, so that the energy is saved urgently. The time of urgent energy conservation is 5G everything interconnection and the arrival of a cloud service platform, and the huge bureau which cannot happen for centuries in the traditional metallurgical smelting is triggered. Although the four buddies are difficult to integrate with the 5G everything interconnection and cloud service platform in a short period, the more reasonable streaming distribution of integrating energy sources by utilizing big data advantages fully utilizes energy conservation and environmental protection, the problem that whether the big vignette is integrated or not is only time is solved, all details of the traditional industry are made in the aspects of reliability, easy operability, energy conservation, long service life and the like from now on, and the pace of integrating the information age is quick. The technical purposes of some patent applications tend to be clearly directed to 5G everything interconnects and energy conservation, such as: the soft heat-insulating casting material provided by application number 202011235700.0, application number 2019102354107, application number 201910396404.X and the like has been tried out the forefront heat-insulating and energy-saving technical index in the industry of the medium signal dyka company. Therefore, the invention aims to provide a method for solving the historical problems of firm aluminum slag adhesion, short service life and high maintenance and repair frequency of an aluminum liquid flow groove by utilizing the industrial test result technology, and the method accelerates the step of integrating the aluminum industry into the information age a little.

Disclosure of Invention

In view of the above, the invention aims to provide the impact-resistant long-life non-sticking aluminum heat-insulation launder, which can solve the historical problems of serious sticking of aluminum slag, extremely short service life and high maintenance and repair frequency in the existing working condition.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

the utility model provides a high impact long-life non-stick aluminium heat preservation chute, includes the body, and the body includes stress expansion gap, prestressing force layering, gusset, casing, soft heat preservation casting material, the lining wall, inside lining, chute masonry material section divide multilayer structure, has arranged inside lining and lining wall and soft heat preservation casting material and casing from interior to exterior in proper order.

In some embodiments, each layer of material of the sequentially layered multi-layer structure has a curved shape, a rib plate is arranged at the runner edge of the sequentially layered multi-layer structure, a prestress pressing strip is welded at the shell of the rib plate and the runner edge, the prestress pressing strip limits the position of the prestress expansion gap to move upwards, the prestress expansion gap is supported to accumulate the reverse elasticity, and the prestress expansion gap is applied to the lining wall, the lining and the lining wall sequentially layered.

In some embodiments, the lining is ground from four sides of the block and the non-mud ports are laid to form a grid-like pre-engineered texture.

In some embodiments, the two ends of the launder are provided with mounting flanges, the mounting flanges are connected with the shell into a whole, the mounting flanges connected with the shell into a whole are provided with screw holes, the mounting flanges with screw holes are also provided with right-angle openings which are matched with the positioning right angles of the positioning slide ways, and the launder is positioned and slidingly mounted on the positioning slide ways through the flange right-angle openings.

In some embodiments, a cover plate is arranged on the launder, and a gas pipe is arranged on the cover plate and connected with a combustion tail gas pipe of the furnace.

In some embodiments, the lining tile material composition is zirconia, with a zirconia content of 29% or more.

In some embodiments, the active ingredient employed in the lining brick form is zirconia product of zirconia corundum or rhombohedral phase.

Compared with the prior art, the impact-resistant long-service-life non-sticking aluminum heat-insulation launder has the following advantages:

the lining brick type lining brick adopts zirconia products with zirconia corundum or inclined tetragonal crystal phase as an active ingredient, the zirconia products with zirconia corundum or inclined tetragonal crystal phase are different from flocculent crystal phase of alumina, aluminum liquid has certain wettability to alumina, at the boundary between the wall of alumina material and aluminum liquid surface, the wall force and surface tension of the aluminum liquid infiltrated aluminum material form a trend of ascending, the boundary liquid surface which tends to ascend is in a blade shape, blade-shaped boundary liquid surface oxidation always occurs at the outer side of the blade surface, and metal aluminum which cannot be completely oxidized always exists on the inner surface of the outer side of the blade surface; the aluminum oxide of the metal aluminum is the same as the same element as the aluminum oxide material in the same element in the same wall surface, the crystal phase is twisted to be hard enough (the aluminum oxide has the crystal hardness of 90 percent of that of diamond), and the aluminum oxide which cannot be completely oxidized is compounded together, so that the hardness is the same as that of the aluminum oxide material wall, and the toughness is much stronger, so that the aluminum oxide slag is hung at the boundary of the aluminum liquid surface of the aluminum oxide material wall surface, the aluminum oxide slag is firm and incomparable, and the aluminum oxide slag cannot be easily removed and can be hung more. The zirconia product with zirconia corundum or inclined tetragonal phase has great specific gravity and high density, grains are orderly arranged and not infiltrated by all metal liquid, the infiltration angle at the boundary between the wall surface and the metal liquid surface tends to be 180 degrees, a meniscus is often formed at the boundary between the wall surface and the metal liquid surface, the oxidation of metal occurs under the condition that the meniscus is not contacted with the wall surface, only glass phase has the phenomenon of adhering the surface, no alumina slag is hung on the lining brick, and the problem that the alumina slag is firmly adhered to the aluminum liquid flow groove is completely solved.

The effective component adopted by the lining brick is zirconia products with zirconia corundum or inclined tetragonal crystal phase, the refractoriness of the pure zirconia products reaches higher than 2700 ℃, the pure zirconia products do not chemically react with all oxide solvents, the pure zirconia products do not chemically corrode all solvents such as fluoride and the like under the aluminum liquid working condition of 750 ℃, the chemical stability is extremely high, the refractoriness of the zirconia corundum with the content of 29 percent or more also reaches more than 2000 ℃, the pure zirconia products are used in the aluminum liquid environment of 750 ℃, the difference between 750 ℃ and the refractoriness is 1200 ℃ and the common porcelain firing temperature is 1200-1300 ℃, the difference between the boiling water tea of a porcelain bowl and the firing temperature of the porcelain bowl is about 1200 ℃, the difference between the boiling water tea and the porcelain bowl firing temperature is almost equal, and the chemical stability and the mechanical strength are never worn and never chemically corroded.

The lining brick type with zirconia crystal phase as main component is directly contacted with aluminum liquid, the temperature of the aluminum liquid is quickly conducted to the inside of the lining brick type to expand, in order to avoid the situation that each expansion size of the lining brick type masonry is accumulated to form a larger scale, one or a small number of large cracks are intensively expanded to damage the masonry, thin paper is adhered to the lining brick type masonry at the position of the masonry crack, after the thin paper is burnt, uniform expansion joints are reserved after the thin paper is reserved, dry masonry is carried out instead of slurry, the lining brick type anchoring nails of the dry masonry are partially anchored in a lining wall formed by casting, when the lining brick type anchoring in the lining wall is heated and expanded by the aluminum liquid, most of heat is not conducted to the lining wall, the lining wall cannot expand synchronously with the lining brick type, at this moment, the crack size is designed to be easy to crack area range or the size of a single lining brick type is generated, otherwise, when the temperature is saturated, the lining brick type is in front of the same thermal expansion, the crack size is easy to be in proportion to crack area expansion range, the crack size of the lining brick type is easy to crack P3 or the lining brick type is repeatedly expanded, the crack is not expanded by the elastic force to be repeatedly expanded, and the crack is not expanded, and the lining brick type is repeatedly expanded, the crack is not expanded to be combined with the lining brick type lining brick is formed, and the lining brick is repeatedly expanded, and the lining brick type is not expanded, and the lining brick is repeatedly expanded to the lining brick is in the thermal expansion to be formed.

In summary, the technical scheme of the long-life aluminum liquid flow groove achieves the established aim, and a. The lining brick is made of zirconia with zirconia corundum or inclined tetragonal crystal phase, so that aluminum oxide slag is not hung, and the problem that aluminum slag is firmly adhered to the aluminum liquid flow groove is completely solved. b. The lining brick is used in an aluminum liquid environment at 750 ℃, the chemical stability is equivalent to that of tea making by a porcelain bowl, and the lining brick can never be worn and chemically corroded. c. The composite wall structure formed by combining the lining wall and the lining brick is characterized in that the effective splitting crack stress is dispersed to the tiny part of each small lining brick, the crack is skillfully hidden in the composite tiny part, the crack is tiny and dispersed, the dispersed tiny crack cannot be immersed in aluminum wetting liquid, the physical natural law regarded in the industry without an unbroken furnace material is avoided, and the new cognition of the structure which is never damaged by the crack is obtained. d. The composite wall body formed by combining the lining wall and the lining brick is never damaged by cracks, and naturally has no maintenance and repair problems. In addition, the section of the runner masonry material is divided into a plurality of layers, the lining wall, the soft heat insulation pouring material and the shell are sequentially arranged from inside to outside, each layer of material of the plurality of layers is sequentially arranged in a layered mode, the bending shape is favorable for the stability of the shape of the composite structure, and the stress distribution is uniform and is favorable for the long-service-life structure. The cover plate and the aluminum outlet bottom cover are additionally arranged on the long-service-life launder special for aluminum outlet, so that a good heat preservation effect can be achieved, a certain residual temperature is also achieved when aluminum liquid contacts with the lining brick during aluminum outlet, the temperature gradient is greatly reduced, the temperature of the composite structure tends to approach due to the reduction of the gradient temperature, the thermal expansion also tends to approach or reduce crack change or no change, and the long service life of the structure is also facilitated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of an embodiment of a long life aluminum flow channel of the present invention;

FIG. 2 is a view of the butt joint of the aluminum launder of FIG. 1-FIG. 1 is a schematic cross-sectional view of the drawing A-A.

FIG. 3 is a schematic illustration of the prestress application method of the prestress expansion slit of FIG. 1.

FIG. 4 is a schematic longitudinal cross-sectional view of another embodiment of the aluminum runner of FIG. 1.

FIG. 5 is a schematic top view of the aluminum tapping spout removal cover plate of FIG. 4.

FIG. 6 is a schematic view of section B-B of the aluminum tapping spout of FIG. 4.

Fig. 7 is a schematic view of the mounting flange parts of the aluminum tapping spout of fig. 6.

FIG. 8 is a schematic longitudinal section of the launder for receiving molten aluminum in the third embodiment of FIG. 1.

Fig. 9 is a schematic view of section C-C of fig. 8.

FIG. 10 is a schematic top view of the launder of FIG. 9 receiving the inflow of molten aluminum.

FIG. 11 is a schematic view of the direction of the aluminum outlet of the launder receiving the inflow of aluminum in FIG. 9.

FIG. 12 is a schematic cross-sectional view of a funnel-shaped launder for receiving molten aluminum in the fourth embodiment of FIG. 1.

FIG. 13 is a schematic cross-sectional view of a funnel-shaped launder shaped like a horn for receiving molten aluminum in the fifth embodiment of FIG. 1.

Fig. 14 is a schematic view in partial cross-section of F-F of fig. 1.

Fig. 15 is a schematic view in partial cross-section of E-E of fig. 14.

Fig. 16 is a schematic view in partial cross-section D-D of fig. 14.

The device comprises a 1-gas pipe, a 2-cover plate, a 3-prestress pressing strip, a 4-rib plate, a 5-prestress expansion gap, a 6-lining, a 7-shell, an 8-lining wall, a 9-soft heat preservation casting material, a 10-base lining, an 11-positioning plate, a 12-vertical shaft sleeve, a 13-aluminum outlet, a 14-ball head, a 15-horizontal shaft sleeve, a 16-lever, a 17-counterweight, a 18-right angle shaft, a 19-mounting flange, a 20-positioning slideway, a 21-lever, a 22-lever shaft hole and a 23-crack region.

Description of the embodiments

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in combination with embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The impact-resistant long-life non-stick aluminum insulation launder of the embodiment of the present invention is described below with reference to fig. 1 to 16 in combination with the embodiments.

The utility model provides a shock-resistant long-life non-sticking aluminum heat preservation chute, which comprises a body, stress expansion gap, the prestressing force layering, the gusset, the casing, soft heat preservation casting material, the lining wall, the inside lining, the chute masonry material section divides multilayer structure, inside lining 6 and lining wall 8 have been arranged in proper order from inside to outside and soft heat preservation casting material 9 and casing 7, multilayer structure each layer material has the crooked shape in proper order, multilayer structure's chute is arranged in proper order in the crooked shape layering department is provided with gusset 4 along, gusset 4 and chute weld prestressing force layering 3 along department casing 7, prestressing force layering 3 is limited the position of prestressing force expansion gap 5 and is moved up, support prestressing force expansion gap 5 accumulation resilience force, apply to inside lining 6 lining wall 8 in proper order, inside lining 6 and lining wall 8 resist the extremely fast thermal expansion of aluminium liquid flow under the condition of prestressing force pressure is exerted, extremely fast cold shrink after the aluminium liquid flow is passed forms the crackle damage, resist the crackle of damage launder production after the aluminium liquid is passed through: the lining 6 is precisely ground by four sides of a very small-scale building block, no mud hole is built to form grid-shaped predesigned textures with very small scale, the predesigned texture grids generate cracks when the lining wall 8 is at a temperature different from the temperature of an inner building layer or an outer building layer, the initial generation and distribution sites of the cracks are realized by the induction of the preset texture grids, the crack distribution of the lining wall 8 for inducing the initial cracks is realized by grid cracks, the lining wall 8 for uniformly distributing the grid cracks changes the lining wall 8 of the just brittle casting material into a micro-deformable material by the very small increase and decrease of the crack scale after the grid cracks are fully distributed, the very small grid textures distribute the shrinkage and expansion scale differences with different layers of lifting temperature gradients, the density of the distribution of the grid texture cracks with the dimension difference is inversely proportional to the width of the cracks, the larger the density of the grid texture cracks is, the smaller the cracks are, the smaller the density of the grid texture cracks is, the aluminum liquid cannot penetrate, the expansion of the cracks is achieved after the expansion of the cracks, the repeated circulation of the expansion of the cracks is carried out again after the expansion of the cracks is carried out, the historical problem that the rigid and brittle refractory material is not broken and damaged in the rapid cooling and rapid heating of a launder is solved, the lining 6 is precisely ground and processed by four sides of a very small-dimension building block, a grid shape with the very small dimension is formed by no mud hole masonry, and after the initial cracks of the lining wall 8 which induces the inner layer texture of the lining wall to be uniform and fine are designed in advance, the service life of the crack is not expanded and tends to be permanent.

The prestress application method of the prestress expansion gap 5 is realized by using a lever 21 with a groove through a force arm, a lever shaft hole 22 of the prestress expansion gap 5 is arranged on a prestress arm device through a shaft, a prestress pressing strip 3 is placed in the groove formed in the lever 21 of the force arm device, the prestress pressing strip 3 placed in the groove is contacted with the prestress expansion gap 5, after the prestress expansion gap 5 contacts the prestress pressing strip 3, a pressure P1 is applied to one section of the lever 21 force arm, the prestress pressing strip 3 conducts the lever 21 to amplify the applied pressure P1 to compress the prestress expansion gap 5, the prestress expansion gap 5 receives pressure volume shrinkage, the prestress expansion gap 5 with shrinkage volume stores pressure into resilience force, and after the prestress pressing strip 3 and a launder are welded with a launder shell 7 into a whole along a rib plate 4, the resilience force is permanently applied to a non-sticky aluminum launder lining 6 and a launder lining 8, the resilience force of the expansion gap 5 permanently presses the lining 6 and the launder lining 8, and resists expansion of cracks, and the permanent service life is realized.

The installation flanges 19 are arranged at two ends of the launder for realizing the permanent service life, the installation flanges 19 are connected with the shell 7 into a whole, the installation flanges 19 connected with the shell 7 into a whole are provided with screw holes, the installation flanges 19 with screw holes are also provided with right-angle openings which are matched with the positioning right angles of the positioning slide ways 20, and the launder is installed on the positioning slide ways 20 in a positioning sliding way through the right-angle openings of the flanges 19.

The long-life aluminum liquid flow groove is shown in the attached figures 4-7, and comprises a body, wherein the body comprises a prestress expansion gap, a prestress pressing strip, a rib plate, a shell, soft heat insulation casting materials, a lining wall, a lining, a gas pipe and a cover plate, wherein the cover plate 2 is arranged on the flow groove and is special for a flow groove of aluminum liquid flowing out of a furnace, the gas pipe 1 is arranged on the cover plate 2, the gas pipe 1 is connected with a combustion tail gas pipe of the furnace, the combustion tail gas is conveyed to the flow groove to weaken the oxidizing atmosphere in the flow groove, the oxidation degree of air in the flow groove to the surface of the aluminum liquid is reduced, the aluminum oxide slag is indirectly reduced, the slag removal operation is reduced, and the yield of the aluminum liquid is also improved.

The section of the runner masonry material is divided into a plurality of layers, a lining 6, a lining wall 8, soft heat-insulating pouring materials 9 and a shell 7 are sequentially arranged from inside to outside, each layer of material of the sequentially layered multilayer structure is provided with a bending shape, a rib plate 4 is arranged along the runner of the sequentially layered multilayer structure, the rib plate 4 and the runner are welded with a prestress pressing strip 3 along the shell 7, the prestress pressing strip 3 limits the position of a prestress expansion gap 5 to move upwards, the prestress expansion gap 5 is supported to accumulate a rebound force, the prestress expansion gap is applied to the lining wall 8 of the sequentially layered lining 6, the lining wall 8 and the lining 6 resist extremely rapid thermal expansion when molten aluminum is applied under the condition of prestress pressure, and the crack damage formed by extremely rapid cooling shrinkage after molten aluminum flows is resisted, and the crack of the damaged runner is generated: the lining 6 is precisely ground by four sides of a very small-scale building block, no mud hole is built to form grid-shaped predesigned textures with very small scale, the predesigned texture grids generate cracks when the lining wall 8 is at a temperature different from the temperature of an inner building layer or an outer building layer, the initial generation and distribution sites of the cracks are realized by the induction of the preset texture grids, the crack distribution of the lining wall 8 for inducing the initial cracks is realized by grid cracks, the lining wall 8 for uniformly distributing the grid cracks changes the lining wall 8 of the just brittle casting material into a micro-deformable material by the very small increase and decrease of the crack scale after the grid cracks are fully distributed, the very small grid textures distribute the shrinkage and expansion scale differences with different layers of lifting temperature gradients, the density of the distribution of the grid texture cracks with the dimension difference is inversely proportional to the width of the cracks, the larger the density of the grid texture cracks is, the smaller the cracks are, the smaller the density of the grid texture cracks is, the aluminum liquid cannot penetrate, the expansion of the cracks is achieved after the expansion of the cracks, the repeated circulation of the expansion of the cracks is carried out again after the expansion of the cracks is carried out, the historical problem that the rigid and brittle refractory material is not broken and damaged in the rapid cooling and rapid heating of a launder is solved, the lining 6 is precisely ground and processed by four sides of a very small-dimension building block, a grid shape with the very small dimension is formed by no mud hole masonry, and after the initial cracks of the lining wall 8 which induces the inner layer texture of the lining wall to be uniform and fine are designed in advance, the service life of the crack is not expanded and tends to be permanent.

The launder shell for realizing the permanent service life is connected with a vertical shaft sleeve 12, a right-angle shaft 18 is arranged in the vertical shaft sleeve 12, a lever 21 is arranged at the horizontal section of the right-angle shaft 18, a counterweight 17 is arranged at one section of the lever 21, a ball head 14 is arranged at the other section of the lever 21, the ball head 14 is arranged in a ball head seat of a bottom cover of an aluminum outlet 13, so that the bottom cover can self-seal, the self-sealing bottom cover can swing in two dimensions, firstly, the aluminum outlet is opened and closed by the horizontal swing of the vertical shaft sleeve 12, secondly, the aluminum outlet is separated from the aluminum outlet 13 by the vertical swing of the horizontal section of the right-angle shaft 18, or the aluminum outlet is tightly covered, a positioning plate 11 is arranged at the aluminum outlet, and the positioning plate 11 is positioned during installation.

One section of the launder is provided with a mounting flange 19, the mounting flange 19 is connected with the shell 7 into a whole, and the mounting flange 19 connected with the shell 7 into a whole is provided with screw holes.

Fig. 8-11 show that the long-life aluminum liquid launder is a launder special for receiving aluminum liquid inflow of a furnace, the top view appearance of the launder shell 7 is similar to a water drop shape, the appearance of the launder shell 7 is similar to a hyperboloid geometry, the big head part of the launder of the appearance hyperboloid shell 7 is higher than the small head part, the shell 7 of the small head part is connected with a mounting flange 19, and the flange 19 is provided with screw holes.

The runner upper opening is provided with a rib plate 4 which is welded at a shell 7 of the runner opening edge, the prestress pressing strip 3 is welded at the position, limiting the prestress expansion gap 5, of the prestress pressing strip 3 to move upwards, the prestress expansion gap 5 is supported to accumulate a rebound force, the prestress expansion gap is applied to lining walls 8 of lining 6 which are sequentially arranged in layers, the lining 6 and the lining walls 8 resist rapid thermal expansion when molten aluminum flows under the condition of being applied with prestress pressure, and the crack damage is formed by rapid cooling shrinkage after molten aluminum flows, so that the crack generation of a damaged runner is resisted: the lining 6 is precisely ground by four sides of a very small-scale building block, no mud hole is built to form grid-shaped predesigned textures with very small scale, the predesigned texture grids generate cracks when the lining wall 8 is at a temperature different from the temperature of an inner building layer or an outer building layer, the initial generation and distribution sites of the cracks are realized by the induction of the preset texture grids, the crack distribution of the lining wall 8 for inducing the initial cracks is realized by grid cracks, the lining wall 8 for uniformly distributing the grid cracks changes the lining wall 8 of the just brittle casting material into a micro-deformable material by the very small increase and decrease of the crack scale after the grid cracks are fully distributed, the very small grid textures distribute the shrinkage and expansion scale differences with different layers of lifting temperature gradients, the density of the distribution of the grid texture cracks with the dimension difference is inversely proportional to the width of the cracks, the larger the density of the grid texture cracks is, the smaller the cracks are, the smaller the density of the grid texture cracks is, the aluminum liquid cannot penetrate, the expansion of the cracks is achieved after the expansion of the cracks, the repeated circulation of the expansion of the cracks is carried out again after the expansion of the cracks is carried out, the historical problem that the rigid and brittle refractory material is not broken and damaged in the rapid cooling and rapid heating of a launder is solved, the lining 6 is precisely ground and processed by four sides of a very small-dimension building block, a grid shape with the very small dimension is formed by no mud hole masonry, and after the initial cracks of the lining wall 8 which induces the inner layer texture of the lining wall to be uniform and fine are designed in advance, the service life of the crack is not expanded and tends to be permanent.

The thickness of the launder bottom lining 10 is larger than that of the non-stick aluminum launder lining 6, so that impact resistance of the cleaning tool and impact of aluminum casting flow are enhanced when cleaning slag hanging is resisted.

The drawing 12 shows that the long-life aluminum liquid launder is a launder special for receiving the inflow of aluminum liquid, the launder is a funnel shape with a large upper opening and a small lower opening, the lower opening of the funnel is connected with a mounting flange 19, and the mounting flange 19 is provided with screw holes.

Fig. 13 shows that the long-life aluminum liquid launder is a launder special for receiving the inflow of aluminum liquid, is a funnel-shaped launder with a big upper opening and a small lower opening and is similar to a horn, the lower opening of the funnel-shaped launder is connected with a mounting flange 19, and the mounting flange 19 is provided with screw holes.

14-16 show that the brick code of the lining 6 is LC-1, the length L1 is 50mm in scale value, the size L2 of the fan-shaped surface is 39mm in scale value, the thickness L of the fan-shaped section is 9mm in scale value, the anchor nail is formed by combining two concave circular arcs with the radius of 6mm and convex circular arcs with the radius of 3mm in succession with a connecting surface, the L3 at the minimum scale of the anchor nail section formed by combining the concave and convex circular arcs is more than or equal to 9mm, and the included angle alpha of the adjacent triangular areas of the anchor nail is more than 60 degrees.

The whole size of the lining 6 brick with the brick code of LC-1 or a certain size change derives a new size model, the accurate magnitude of the new size change is amplified to 1.1 times or reduced to 0.9 times, the value 4 of one bit after the decimal point is generated by the amplification or reduction calculation is not discarded by 5, and the positive tolerance range is +0.3mm negative tolerance range is minus 0.5mm mm.

The brick type code is the lining 6 brick type of LC-1, the sequential continuous expansion of a certain size or all sizes is 1.1 times more or sequential continuous contraction is 0.9 times more, namely, the multiple derivatization is carried out to obtain LC-1-00 to LC-1-99 expansion types, the number is 1-01-09 as the reduction type, and the number is 1-1-99 as the expansion type.

Brick-type size meter with lining brick-type size reduction and expansion

The lining 6 brick section material mainly can prevent the alumina slag from being firmly bonded, the zirconia content is more than or equal to 29 percent, the crystal phase is mainly zirconia corundum or inclined tetragonal crystal phase, the lining 6 brick with the zirconia crystal phase as the main component directly contacts with aluminum liquid, the temperature of the aluminum liquid is quickly conducted back into the lining 6 brick section body to be thermally expanded, in order to avoid the situation that each expansion size of the lining 6 brick section body is accumulated to form a larger scale, one or a small number of large cracks are intensively supported to damage the masonry body, thin paper is adhered to the masonry slit of the lining 6 brick section body before the lining 6 brick section body is built, the uniform expansion joints are reserved after the thin paper is burnt, the dry masonry is carried out without using slurry, the anchor nails of the lining 6 brick section of the dry masonry are anchored in the cast-molded lining wall 8, when the aluminum liquid in the lining 6 brick section is heated to be expanded, the heat is not conducted to the lining wall 8, the lining wall 8 can not expand synchronously with the lining 6 brick type, at the moment, cracks which are easy to crack the range of the area 23 or generate the size of the asynchronous expansion difference between the single lining 6 brick type scale and the lining wall 8 are designed, the size of the cracks is in direct proportion to the size of the asynchronous expansion difference between the lining 6 brick type scale, otherwise, when the thermal expansion scale of the lining wall 8 and the lining 6 brick type scale is consistent after the temperature conduction is saturated, the cracks which are easy to crack the range expansion difference of the area 23 are closed under the reverse thrust of the accumulated resilience force P3 or P2 of the prestress expansion gap 5, the cracks are closed and repeatedly reengineered along with the flowing and leaving of the launder aluminum liquid, the repeated cracking closing cracks occur in the composite wall formed by combining the lining wall 8 and the lining 6 brick type, the aluminum liquid can not reach the cracks, the problem that the aluminum liquid oxidation expansion cracks continuously and repeatedly damage the masonry body occurs, the weak resilience protection of the soft heat preservation casting 9 is added, the composite wall body formed by combining the lining wall 8 and the lining 6 is never damaged by cracks.

The brick-shaped lining (6) adopts zirconia products with zirconia corundum or inclined tetragonal crystal phase as an active ingredient, the zirconia products with zirconia corundum or inclined tetragonal crystal phase are different from flocculent crystal phase of alumina, aluminum liquid has certain wettability to alumina, at the boundary between the wall of alumina material and aluminum liquid surface, the wall force and surface tension of the aluminum liquid infiltrated aluminum material form a trend of ascending, the boundary liquid surface which tends to ascend is in a blade shape, blade-shaped boundary liquid surface oxidation always occurs at the outer side of the blade surface, and metal aluminum which cannot be completely oxidized always exists on the inner surface of the outer side of the blade surface; the aluminum oxide of the metal aluminum is the same as the same element as the aluminum oxide material in the same element in the same wall surface, the crystal phase is twisted to be hard enough (the aluminum oxide has the crystal hardness of 90 percent of that of diamond), and the aluminum oxide which cannot be completely oxidized is compounded together, so that the hardness is the same as that of the aluminum oxide material wall, the toughness is much stronger, the aluminum oxide slag is hung at the boundary of the aluminum liquid surface of the aluminum oxide material wall surface, the aluminum oxide slag is firm and incomparable, and the aluminum oxide slag cannot be easily removed, but can be easily removed more. Zirconium corundum or inclined tetragonal phase zirconium oxide products are high in specific gravity density, crystal grains are orderly arranged and are not infiltrated by all metal liquid, the infiltration angle at the boundary between the wall surface and the metal liquid surface of the zirconium corundum or inclined tetragonal phase zirconium oxide products tends to be 180 degrees, a meniscus is often formed at the boundary between the wall surface and the metal liquid surface, oxidation of metal occurs under the condition that the meniscus is not contacted with the wall surface, only glass phase has the phenomenon of adhering the surface, and alumina slag is not hung on the lining (6) brick type, so that the problem that aluminum slag is firmly adhered to an aluminum liquid flow groove is completely solved.

The effective component adopted by the lining brick type is zirconia products with zirconia corundum or inclined tetragonal crystal phase, the refractoriness of the pure zirconia products reaches higher than 2700 ℃, the pure zirconia products do not chemically react with all oxide solvents, the pure zirconia products do not chemically corrode all solvents such as fluoride and the like under the aluminum liquid working condition of 750 ℃, the chemical stability is extremely high, the refractoriness of the zirconia corundum with the content of more than or equal to 29 percent also reaches more than 2000 ℃, the pure zirconia products are used in the aluminum liquid environment of 750 ℃, and the pure zirconia products are similar to porcelain bowl tea making, and never wear and never chemically corrode.

In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The impact-resistant long-life non-sticking aluminum heat-preserving launder is characterized by comprising a body, wherein the body comprises stress expansion gaps, prestress pressing strips, rib plates, a shell, soft heat-preserving casting materials, lining walls, lining and launder masonry material sections are of a multi-layer structure, and the lining and lining walls, the soft heat-preserving casting materials and the shell are sequentially arranged from inside to outside;

the lining is ground and processed by four sides of the building block, and no mud port is built to form a grid-shaped pre-designed texture;

each layer of material of the multilayer structure which is sequentially arranged in a layering manner is provided with a bending shape, a rib plate is arranged at the runner edge of the multilayer structure which is sequentially arranged in a layering manner in the bending shape, a prestress pressing strip is welded at the shell of the rib plate and the runner edge, the prestress pressing strip limits the position of a prestress expansion gap to move upwards, the prestress expansion gap is supported to accumulate a rebound force, and the prestress expansion gap is applied to the lining and the lining wall which are sequentially arranged in a layering manner;

the effective component adopted by the lining brick is zirconia products with zirconia corundum or inclined tetragonal crystal phase.

2. The impact-resistant long-life non-stick aluminum heat-insulating launder as claimed in claim 1, wherein the launder is provided with mounting flanges at both ends, the mounting flanges are integrated with the shell, the mounting flanges integrated with the shell are provided with screw holes, the mounting flanges with screw holes are also provided with right-angle openings matched with the positioning right angles of the positioning slide ways, and the launder is positioned and slidingly mounted on the positioning slide ways through the flange right-angle openings.

3. The impact-resistant long-life non-stick aluminum heat-preserving launder as claimed in claim 2, wherein a cover plate is arranged on the launder, and a gas pipe is arranged on the cover plate and is connected with a combustion tail gas pipe of the furnace.

4. The impact-resistant long-life non-stick aluminum heat-insulating launder according to claim 3, wherein the lining brick material composition is zirconia, and the zirconia content is more than or equal to 29%.