CN113461411A - Oxidation-resistant aluminum silicon carbide carbon brick and preparation method thereof - Google Patents
Oxidation-resistant aluminum silicon carbide carbon brick and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of carbon bricks, in particular to an anti-oxidation aluminum silicon carbide carbon brick for a ladle; the method comprises the following steps of: 45-55 parts of high-alumina bauxite, 10-20 parts of andalusite, 9-15 parts of white corundum fine powder, 7-10 parts of graphite, 0.5-2 parts of carbon black, 2.5-3.5 parts of a binding agent, 7-13 parts of silicon carbide fine powder and 4-8 parts of co-ground powder; the cofired powder comprises barite, silicon powder and boron carbide; the invention also discloses a preparation method of the anti-oxidation aluminum silicon carbide carbon brick, which comprises the following steps: the aluminum silicon carbide carbon brick is obtained by weighing in proportion, high-speed constant-temperature mixing, dry mixing, material mixing, pressing in a mould to form a brick and heat treatment in a tunnel kiln, and the problems of easy damage, poor compactness, poor oxidation resistance and the like of the iron-clad brick in the prior art are solved by optimizing the material proportion and improving the process, so that the compactness of the material is improved, the pores of the material are reduced, and the fire resistance and the oxidation resistance are improved.
Description
Technical Field
The invention relates to the technical field of carbon bricks, in particular to an antioxidant aluminum silicon carbide carbon brick and a preparation method thereof.
Background
The ladle is widely applied to large and medium-sized iron and steel enterprises as a turnover device for linking iron making and steel making transportation molten iron and pretreatment of molten iron. With the rapid development of the steel industry, some steel plants adopt torpedo type hot metal mixer cars, but most steel plants still adopt ladles to carry molten iron, and develop towards large-scale, and with the progress of steel smelting technology and the improvement of steel-making variety structure adjustment and quality, the ladles have developed towards the molten iron pretreatment direction from the original single transportation equipment.
The oxidation speed of the non-oxide components in the raw materials determines the oxidation resistance of the iron-clad brick as a carbon-containing refractory material, and the iron-clad brick also has a considerable influence on the service life of the refractory material. The more rapidly the graphite and silicon carbide in the iron-clad brick are oxidized, the more rapidly the decarburized layer is formed, the more easily the slag penetrates into the brick, and the penetrated slag and Al in the brick2O3、SiO2The components react to form a low-melting phase, so that the iron-clad brick is easy to damage.
CN201410118425.2 discloses an aluminum silicon carbide carbon brick for torpedo cars, the material used in the torpedo car impact area is aluminum silicon carbide carbon brick, the raw materials such as alumina, silicon carbide, regenerated graphite, sub-white corundum, silicon, aluminum, boron carbide, thermosetting phenolic resin and the like are mixed according to the mass percentage, and are formed by brick press molding heat treatment, the invention solves the problem that the common aluminum silicon carbide carbon brick for torpedo cars is serious in baking and empty can decarburization due to poor oxidation resistance, and improves the erosion resistance and scouring resistance of the aluminum silicon carbide carbon brick for torpedo cars; CN201710079933.8 discloses a zinc-aluminum spinel aluminum silicon carbide carbon brick for a ladle and a preparation method thereof, the zinc-aluminum spinel, zirconium oxide and lanthanum oxide with low expansion coefficients are introduced in the preparation process of the aluminum silicon carbide carbon brick, and the beneficial effects are that: the thermal shock resistance stability of the brick is improved, the volume expansion of the brick is avoided, the heat loss of molten iron is reduced, the energy consumption is reduced, the density and the high-temperature strength of the brick are improved, and the service life of the ladle used for packing the ladle to the bottom is prolonged. But the method does not start from improving the density of the material, and does not reduce the porosity of the material so as to improve the oxidation resistance of the refractory material.
Therefore, in order to solve the above problems, the present invention is urgently needed to provide an oxidation resistant aluminum silicon carbide carbon brick and a preparation method thereof.
Disclosure of Invention
The invention aims to provide an anti-oxidation aluminum silicon carbide carbon brick and a preparation method thereof, which solve the problems of insufficient compactness and oxidation resistance and the like of the existing aluminum silicon carbide carbon brick in the prior art by improving and increasing raw material components and proportion thereof.
The invention provides an antioxidant aluminum silicon carbide carbon brick which comprises the following components in parts by mass: 45-55 parts of high-alumina bauxite, 10-20 parts of andalusite, 9-15 parts of white corundum fine powder, 7-10 parts of graphite, 0.5-2 parts of carbon black, 2.5-3.5 parts of binding agent, 7-13 parts of silicon carbide fine powder and 4-8 parts of co-ground powder; wherein the cofired powder comprises 3 to 5 parts of barite, 0.5 to 2 parts of silicon powder and 0.5 to 1 part of boron carbide fine powder.
Preferably, the particle size of the barite is 300-350 meshes; the granularity of the silicon powder is 300-350 meshes; the granularity of the boron carbide fine powder is 300-350 meshes.
Preferably, the barite particle size is 325 mesh; the granularity of the silicon powder is 325 meshes; the particle size of the boron carbide fine powder is 325 meshes.
Preferably, the weight percentage of barium sulfate in the barite is more than or equal to 87 percent; the weight percentage of silicon in the silicon powder is more than or equal to 98 percent; the weight percentage of the boron carbide in the boron carbide fine powder is more than or equal to 90 percent.
Preferably, the bauxite comprises the following components in parts by weight: 15-20 parts of high bauxite with the granularity of 3-5 mm; 15-25 parts of high bauxite with the granularity of 1-3 mm; 5-15 parts of high bauxite with the granularity of 0-1 mm; andalusite comprising: 3-8 parts of andalusite with the granularity of 3-5 mm; 5-15 parts of andalusite with the granularity of 1-3 mm; 3-8 parts of andalusite with the granularity of 0-2 mm.
Preferably, the graphite particle size is 100-1200 meshes; the granularity of the white corundum fine powder is 200 meshes; the granularity of the silicon carbide fine powder is 200 meshes; the particle size of the carbon black is 200-500 nm.
Preferably, the carbon content in the graphite is > 97.0% by weight; al in high-alumina bauxite2O3The weight percentage is more than or equal to 88 percent; al in andalusite2O3+SiO2More than or equal to 98 wt%; al in fine white corundum powder2O3The weight percentage is more than or equal to 99 percent; the weight percentage of SiC in the silicon carbide fine powder is more than or equal to 97.0 percent.
Preferably, the binder is a phenolic resin.
Preferably, the phenolic resin has a viscosity of 12000-15000cps/25 ℃ and a solid content of 30-60%.
The invention also provides a preparation method of the antioxidant aluminum silicon carbide carbon brick, which comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder in proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; adopting a high-speed mixing process for mixing at a constant temperature, controlling the constant temperature to be between 25 and 40 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2 to 3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
Compared with the prior art, the oxidation-resistant aluminum silicon carbide carbon brick and the preparation method thereof provided by the invention have the following steps:
1. the anti-oxidation aluminum silicon carbide carbon brick provided by the invention is added with barite, the barite is one of sulfate minerals, the main component is barium sulfate, the melting point is 1550 ℃, the highest temperature of molten iron in a foundry ladle is below 1500 ℃, the chemical property is relatively stable, and the brick is hardly dissolved in water and acid; barite is filled between the silicon carbide and the graphite to protect the graphite from being oxidized; the barite improves the oxidation resistance of the graphite refractory material for two main reasons: firstly, the density of the material is improved by adding the barite, and the porosity of the material is reduced, so that the oxidation resistance of the refractory material is improved; on the other hand, the barite part is attached to the surface of the graphite under the action of the binding agent, and the oxidation of the graphite is effectively prevented.
2. According to the antioxidant alumina silicon carbide carbon brick provided by the invention, andalusite with different particle sizes is added, and a silicon-rich liquid phase is generated in the calcining process, so that on one hand, the generated silicon-rich glass phase is favorable for filling pores, and on the second hand, the silicon-rich glass phase can react with alumina in a brick matrix to form secondary mullite, and both the silicon-rich glass phase and the secondary mullite are favorable for improving the compactness of a sample and slowing down the permeation and diffusion of oxygen in the castable, thereby improving the oxidation resistance of the material.
3. According to the oxidation-resistant aluminum silicon carbide carbon brick provided by the invention, graphite and carbon black are added as carbon sources of the brick body, the dispersibility of the carbon black is relatively good, and the carbon black and 100-mesh 1200-mesh ultrafine graphite can be complemented in particle size, so that the mixed fine powder is more compact, and the oxidation resistance of the material is improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following specific examples.
In the following examples, all starting materials are known commercially available products, and relevant parameters for some of the starting materials are provided for reference:
al in high alumina bauxite as described in the examples below2O3More than or equal to 88wt percent; al in andalusite2O3+SiO2More than or equal to 98 wt%; graphite with the granularity of 100 meshes and 1200 meshes and the carbon content of more than 97.0 percent; the carbon black is large-particle-size carbon black with the particle size of 200-500 nm; al in fine white corundum powder2O3Not less than 99 wt%; SiC in the silicon carbide fine powder is more than or equal to 97.0 wt%; liquid resin, the viscosity of the liquid resin is 12000-15000cps/25 ℃, and the solid content of the liquid resin is 30-60%; the barite has a particle size of 325 meshes, wherein BaSO3+ BaO is more than or equal to 87 wt%; the silicon content in the silicon powder is more than 98 percent; the granularity of the boron carbide fine powder is 325 meshes, wherein B4C≥90%。
Example one
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 12.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 1 part of carbon black with the particle size of 200-500 nm; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 5 parts of co-ground powder, which consists of 3 parts of 325-mesh barite, 1 part of 325-mesh silicon powder and 1 part of 325-mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at a constant temperature of 25 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
Comparative example 1
An oxidation-resistant aluminum silicon carbide carbon brick comprises the following raw material components in parts by weight:
17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 12.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 5 parts of co-ground powder, which consists of 3 parts of 325-mesh barite, 1 part of 325-mesh silicon powder and 1 part of 325-mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at a constant temperature of 25 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
The oxidation resistant aluminum silicon carbide carbon brick prepared in the first embodiment and the aluminum silicon carbide carbon brick prepared in the first comparative embodiment without adding carbon black powder are compared, and the test results are as follows:
watch 1
As shown in table one, the age of the oxidation-resistant aluminum silicon carbide carbon brick prepared in the first example is 880 heats per ton of the iron-coated single-ladle furnace life, the age of the oxidation-resistant aluminum silicon carbide carbon brick prepared in the first example is 759 heats per ton of the aluminum silicon carbide carbon brick prepared in the first comparative example without adding carbon black powder, and the service life of the oxidation-resistant aluminum silicon carbide carbon brick in the first example is obviously longer than that of the aluminum silicon carbide carbon brick prepared in the first comparative example; the falling frequency of the liner oxide layer of the oxidation resistant aluminum silicon carbide carbon brick of the first embodiment is 1 time, which is less than the falling frequency of the aluminum silicon carbide carbon brick of the first embodiment by 2 times; the average thickness of the falling layer of the anti-oxidation aluminum silicon carbide carbon brick prepared in the first embodiment is 35mm, which is far lower than that of the falling layer of the aluminum silicon carbide carbon brick prepared in the first embodiment by 45mm, and the anti-oxidation aluminum silicon carbide carbon brick prepared in the first embodiment reduces material consumption and saves cost while ensuring good anti-oxidation performance and service performance of a foundry ladle; the residual thickness of the working layer of the anti-oxidation aluminum silicon carbide carbon brick prepared in the first embodiment is 90mm, which is far higher than that of the working layer of the aluminum silicon carbide carbon brick prepared in the first embodiment by 70mm, the anti-oxidation aluminum silicon carbide carbon brick prepared in the first embodiment has less consumption in a high-temperature use process, and the residual thickness of the working layer is larger; the corrosion rate of the anti-oxidation aluminum silicon carbide carbon brick prepared in the first embodiment is 0.125 mm/furnace, the corrosion rate is slower than that of the aluminum silicon carbide carbon brick prepared in the first embodiment by 0.171 mm/furnace, and the slower the corrosion rate, the smaller the consumption of the carbon brick and the longer the service life.
Example two
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 11.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 2 portions of carbon black with the granularity of 200 and 500 nm; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; and 5 parts of co-ground powder, wherein the co-ground powder consists of 3 parts of 325-mesh barite fine powder, 1 part of 325-mesh silicon powder and 1 part of 325-mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at a constant temperature of 30 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
EXAMPLE III
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 11.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 1 part of carbon black with the particle size of 200-500 nm; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 6 parts of co-ground powder, which consists of 4 parts of 325-mesh barite, 1 part of 325-mesh silicon powder and 1 part of 325-mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion;
carrying out mulling by adopting a high-speed mulling process at a constant temperature of 30 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(4) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(5) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
Comparative example No. two
An oxidation-resistant aluminum silicon carbide carbon brick comprises the following raw material components in parts by weight:
17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 11.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 1 part of carbon black with the particle size of 200-500 nm; 7 parts of a binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 4 parts of a co-ground powder consisting of 2 parts of 325 mesh silicon powder and 2 parts of 325 mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at a constant temperature of 30 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the aluminum silicon carbide carbon bricks.
The oxidation resistant aluminum silicon carbide carbon brick prepared in the third example and the aluminum silicon carbide carbon brick prepared in the second comparative example without barite are compared according to the following inspection results:
watch two
As shown in the second table, the age of the 210 ton iron-clad single-clad furnace of the antioxidant aluminum silicon carbide carbon brick prepared in the third example is 896 heats, the age of the 210 ton iron-clad single-clad furnace of the aluminum silicon carbide carbon brick prepared in the second comparative example without adding carbon black powder is 765 heats, and the service life of the antioxidant aluminum silicon carbide carbon brick prepared in the third example is obviously longer than that of the aluminum silicon carbide carbon brick prepared in the second comparative example; the number of times of falling off of the lining oxide layer of the oxidation-resistant aluminum silicon carbide carbon brick of the third embodiment is 1, which is less than the number of times of falling off of the aluminum silicon carbide carbon brick of the second embodiment by 2; the average thickness of the falling layer of the anti-oxidation aluminum silicon carbide carbon brick prepared in the third embodiment is 30mm, which is far lower than that of the falling layer of the aluminum silicon carbide carbon brick prepared in the second embodiment by 50mm, and the anti-oxidation aluminum silicon carbide carbon brick prepared in the third embodiment reduces material consumption and saves cost while ensuring good anti-oxidation performance and service performance of a foundry ladle; the residual thickness of the working layer of the antioxidant aluminum silicon carbide carbon brick prepared in the third embodiment is 95mm, which is far higher than that of the working layer of the aluminum silicon carbide carbon brick prepared in the second embodiment by 65mm, the consumption of the antioxidant aluminum silicon carbide carbon brick prepared in the third embodiment in a high-temperature use process is less, and the residual thickness of the working layer is larger; the oxidation resistant aluminum silicon carbide carbon brick prepared in the third example has an erosion rate of 0.117 mm/furnace, the erosion rate is slower than that of the aluminum silicon carbide carbon brick prepared in the second example by 0.176 mm/furnace, the slower the erosion rate is, the smaller the consumption of the carbon brick is, and the longer the service life is.
Example four
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 10.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 2 portions of carbon black with the granularity of 200 and 500 nm; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 6 parts of co-ground powder, which consists of 4 parts of 325-mesh barite, 1 part of 325-mesh silicon powder and 1 part of 325-mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at the constant temperature of 35 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
EXAMPLE five
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 10.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 1 part of carbon black with the particle size of 200-500 nm; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 7 parts of co-ground powder consisting of 5 parts of 325 mesh barite, 1 part of 325 mesh silicon powder and 1 part of 325 mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at the constant temperature of 35 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
EXAMPLE six
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 17 parts of high bauxite with the granularity of 5-3 mm; 20 parts of high bauxite with the granularity of 3-1 mm; 10 parts of high bauxite with the granularity of 1-0 mm; 5 parts of andalusite with the granularity of 5-3 mm; 10 parts of andalusite with the granularity of 3-1 mm; 5 parts of andalusite with the granularity of 1-0 mm; 9.5 parts of white corundum fine powder with 200 meshes; 7 portions of 100-1200 mesh graphite; 2 portions of carbon black with the granularity of 200 and 500 nm; 3 parts of binding agent liquid resin; 7.5 parts of 200-mesh silicon carbide fine powder; 7 parts of co-ground powder consisting of 5 parts of 325 mesh barite, 1 part of 325 mesh silicon powder and 1 part of 325 mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at the constant temperature of 35 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
EXAMPLE seven
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 20 parts of bauxite with the granularity of 5-3mm, 25 parts of bauxite with the granularity of 3-1mm and 5 parts of bauxite with the granularity of 1-0 mm; 3 parts of andalusite with the granularity of 5-3mm, 15 parts of andalusite with the granularity of 3-1mm and 3 parts of andalusite with the granularity of 1-0 mm; 15 parts of white corundum fine powder of 200 meshes; 10 portions of 100-1200 mesh graphite; 2 portions of carbon black with the granularity of 200 and 500 nm; 3 parts of binding agent liquid resin; 13 parts of 200-mesh silicon carbide fine powder; 4 parts of a cofulled powder consisting of 5 parts of 325 mesh barite, 2 parts of 325 mesh silicon powder and 1 part of 325 mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at the constant temperature of 35 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
Example eight
The invention provides an aluminum silicon carbide carbon brick with excellent oxidation resistance, which comprises the following raw material components in parts by weight: 15 parts of bauxite with the granularity of 5-3mm, 25 parts of bauxite with the granularity of 3-1mm and 5 parts of bauxite with the granularity of 1-0 mm; 3 parts of andalusite with the granularity of 5-3mm, 5 parts of andalusite with the granularity of 3-1mm and 3 parts of andalusite with the granularity of 1-0 mm; 9 parts of white corundum fine powder of 200 meshes; 7 portions of 100-1200 mesh graphite; 0.5 portion of carbon black with the granularity of 200-500 nm; 3 parts of binding agent liquid resin; 7 parts of 200-mesh silicon carbide fine powder; 8 parts of co-ground powder consisting of 3 parts of 325 mesh barite, 0.5 part of 325 mesh silicon powder and 0.5 part of 325 mesh boron carbide fine powder.
The preparation method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder according to a proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; carrying out mulling by adopting a high-speed mulling process at the constant temperature of 40 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2-3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
The results of the tests on the antioxidant alumina-silicon carbide-carbon bricks prepared in the above eight examples and the alumina-silicon carbide-carbon bricks of the comparative example I without adding carbon black powder and the comparative example II without adding barite are compared as shown in the following table III:
watch III
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The oxidation-resistant aluminum silicon carbide carbon brick is characterized by comprising the following components in parts by mass: 45-55 parts of high-alumina bauxite, 10-20 parts of andalusite, 9-15 parts of white corundum fine powder, 7-10 parts of graphite, 0.5-2 parts of carbon black, 2.5-3.5 parts of binding agent, 7-13 parts of silicon carbide fine powder and 4-8 parts of co-ground powder; wherein the cofired powder comprises 3 to 5 parts of barite, 0.5 to 2 parts of silicon powder and 0.5 to 1 part of boron carbide fine powder.
2. The oxidation resistant aluminum silicon carbide carbon brick of claim 1, wherein: the granularity of the barite is 300-350 meshes; the granularity of the silicon powder is 300-350 meshes; the granularity of the boron carbide fine powder is 300-350 meshes.
3. The oxidation resistant aluminum silicon carbide carbon brick of claim 2, wherein: the granularity of the barite is 325 meshes; the granularity of the silicon powder is 325 meshes; the particle size of the boron carbide fine powder is 325 meshes.
4. The oxidation resistant aluminum silicon carbide carbon brick as claimed in claim 1, wherein the barium sulfate weight percentage in the barite is more than or equal to 87%; the weight percentage of silicon in the silicon powder is more than or equal to 98 percent; the weight percentage of the boron carbide in the boron carbide fine powder is more than or equal to 90 percent.
5. The oxidation resistant aluminum silicon carbide carbon brick according to claim 1, wherein the high bauxite comprises, in parts by mass: 15-20 parts of high bauxite with the granularity of 3-5 mm; 15-25 parts of high bauxite with the granularity of 1-3 mm; 5-15 parts of high bauxite with the granularity of 0-1 mm; andalusite comprising: 3-8 parts of andalusite with the granularity of 3-5 mm; 5-15 parts of andalusite with the granularity of 1-3 mm; 3-8 parts of andalusite with the granularity of 0-2 mm.
6. The oxidation resistant aluminum silicon carbide carbon brick of claim 1, wherein: the granularity of the graphite is 100-1200 meshes; the granularity of the white corundum fine powder is 200 meshes; the granularity of the silicon carbide fine powder is 200 meshes; the particle size of the carbon black is 200-500 nm.
7. The oxidation resistant aluminum silicon carbide carbon brick of claim 1, wherein: the weight percentage of carbon content in the graphite is more than 97.0 percent; al in high-alumina bauxite2O3The weight percentage is more than or equal to 88 percent; al in andalusite2O3+SiO2More than or equal to 98 wt%; al in fine white corundum powder2O3The weight percentage is more than or equal to 99 percent; the weight percentage of SiC in the silicon carbide fine powder is more than or equal to 97.0 percent.
8. The oxidation resistant aluminum silicon carbide carbon brick of claim 1, wherein: the bonding agent is phenolic resin.
9. The oxidation resistant aluminum silicon carbide carbon brick of claim 8, wherein: the viscosity of the phenolic resin is 12000-15000cps/25 ℃, and the solid content is 30-60%.
10. A method for preparing the oxidation resistant aluminum silicon carbide carbon brick according to any one of claims 1 to 9, wherein the method comprises the following steps: the method comprises the following steps:
(1) weighing barite, silicon powder and boron carbide fine powder in proportion, mixing, and carrying out vibration grinding for 10-15 minutes to obtain co-ground powder;
(2) weighing high-alumina bauxite, andalusite, fine white corundum powder, graphite, carbon black, a bonding agent and fine silicon carbide powder according to a proportion; adopting a high-speed mixing process for mixing at a constant temperature, controlling the constant temperature to be between 25 and 40 ℃, and dry-mixing the weighed high-alumina bauxite and andalusite for 2 to 3 minutes; after dry mixing, adding a binding agent, wet mixing for 3-5 minutes, adding graphite, mixing for 5-6 minutes, adding the co-milled powder, the silicon carbide fine powder and the white corundum fine powder, and mixing for 20-25 minutes to obtain a mixture;
(3) putting the mixture into a mould, and pressing and forming to obtain a green brick;
(4) and (3) putting the green bricks into a tunnel kiln for heat treatment, keeping the temperature of the kiln at 260-350 ℃, starting a fan for supplying heat, keeping the temperature of the kiln at 260 ℃ for 11-13h, taking the green bricks out of the kiln and sorting to obtain the antioxidant aluminum silicon carbide carbon bricks.
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| CN116217211A (en) * | 2023-01-05 | 2023-06-06 | 濮阳濮耐高温材料（集团）股份有限公司 | Andalusite-added aluminum silicon carbide carbon brick and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5382555A (en) * | 1993-10-22 | 1995-01-17 | General Acquisition Corporation | High alumina brick with metallic carbide and its preparation |
| CN103880450A (en) * | 2014-03-27 | 2014-06-25 | 内蒙古包钢利尔高温材料有限公司 | Aluminum silicon carbide carbon brick for torpedo ladle |
| CN109704791A (en) * | 2018-12-20 | 2019-05-03 | 天津炜润达新材料科技有限公司 | A kind of recoverying and utilizing method of waste and old refractory material |
| CN111908931A (en) * | 2020-07-20 | 2020-11-10 | 武汉钢铁有限公司 | Low-carbon aluminum silicon carbide carbon brick containing nano carbon and preparation method thereof |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5382555A (en) * | 1993-10-22 | 1995-01-17 | General Acquisition Corporation | High alumina brick with metallic carbide and its preparation |
| CN103880450A (en) * | 2014-03-27 | 2014-06-25 | 内蒙古包钢利尔高温材料有限公司 | Aluminum silicon carbide carbon brick for torpedo ladle |
| CN109704791A (en) * | 2018-12-20 | 2019-05-03 | 天津炜润达新材料科技有限公司 | A kind of recoverying and utilizing method of waste and old refractory material |
| CN111908931A (en) * | 2020-07-20 | 2020-11-10 | 武汉钢铁有限公司 | Low-carbon aluminum silicon carbide carbon brick containing nano carbon and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116217211A (en) * | 2023-01-05 | 2023-06-06 | 濮阳濮耐高温材料（集团）股份有限公司 | Andalusite-added aluminum silicon carbide carbon brick and preparation method thereof |
| CN116217211B (en) * | 2023-01-05 | 2024-01-02 | 濮阳濮耐高温材料（集团）股份有限公司 | Andalusite-added aluminum silicon carbide carbon brick and preparation method thereof |
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