CN112408955A - Iron-aluminum-magnesium oxide composite material product and manufacturing method thereof - Google Patents
Iron-aluminum-magnesium oxide composite material product and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses an iron-aluminum-magnesium oxide composite material product and a manufacturing method thereof, relating to inorganic non-metallic materials. The invention firstly mixes the electric melting iron aluminum magnesium oxide synthetic materials with different grain diameters, then adds hematite and calcium oxide clinker, mixes and ball-mills to prepare mixed powder, then mixes the dextrin powder with water, adds chitosan, potassium nitrate and butyl titanate alcohol solution, stirs and mixes to obtain mixed dextrin liquid, mixes the mixed powder with the mixed dextrin liquid to prepare mixed slurry, stirs the mixed slurry to be aged, forms, then dries and fires to prepare the iron aluminum magnesium oxide synthetic material product. The iron-aluminum-magnesium oxide composite material product prepared by the invention has excellent fire resistance and alkali resistance.
Description
Technical Field
The invention provides an iron-aluminum-magnesium oxide composite material product and a manufacturing method thereof, relating to the technical field of inorganic non-metallic materials.
Background
At present, the industries of steel, cement kiln and the like urgently need a good functional product which has high temperature resistance, thermal shock resistance and stripping resistance and is easy to hang a ladle lining or a kiln coating. The existing refractory products mainly comprise magnesia-chrome bricks, magnesia-alumina spinel bricks and the like, when the refractory products are used for linings of converters, steel ladles, cement kilns and electric furnaces, the defects of short service life of the existing products are highlighted due to the problems of large capacity, high temperature, harsh use conditions and the like of the steel ladles and the cement kilns, the frequency of repairing the ladle linings and the kiln linings is improved, the production efficiency is reduced, the chromium products are used to cause environmental pollution, the original magnesia-alumina spinel is limited by a new technology, and therefore, the research and development of spinel products with special indexes are urgent. The iron-aluminum-magnesium oxide synthetic material is composed of iron-aluminum, magnesium-aluminum, iron-magnesium binary oxide and iron-aluminum-magnesium ternary oxide, can greatly improve the physical and chemical properties of products, promotes the development of industries, better meets the requirements of social, economic and environmental development, has larger markets at home and abroad, has profound significance and considerable prospect.
Disclosure of Invention
The present invention aims at providing an iron-aluminum-magnesium oxide composite material product to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
1. an iron-aluminum-magnesium oxide composite material product is characterized by mainly comprising the following raw material components in parts by weight: 35-45 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 10-20 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 5-15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 5-15 parts of hematite and 5-15 parts of calcium oxide clinker.
As optimization, the iron-aluminum-magnesium oxide composite material product further comprises the following raw material components in parts by weight: 3-10 parts of mixed dextrin liquid.
As optimization, the electric melting iron-aluminum-magnesium oxide synthetic material comprises the following components: fe2O315-30% of Al2O335-40% of MgO, 25-40% of SiO2The content is less than or equal to 10 percent, and the content of CaO is less than or equal to 15 percent; fe in the hematite2O3The content is more than or equal to 93 percent; the CaO content in the calcium oxide clinker is more than or equal to 95 percent.
The mixed dextrin solution is prepared from dextrin powder, water, a butyl titanate alcoholic solution, a potassium nitrate solution and a chitosan solution as optimization; the solubility of the dextrin powder is more than 95 percent, the ash content is less than 1 percent, and the water content is less than 6 percent.
As optimization, the iron-aluminum-magnesium oxide composite material product mainly comprises the following raw material components in parts by weight: 40 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 10 parts of hematite, 10 parts of calcium oxide clinker and 10 parts of mixed paste liquid.
As optimization, the manufacturing method of the iron-aluminum-magnesium oxide composite material product mainly comprises the following steps:
(1) mixing 4-1mm of electric melting iron aluminum magnesium oxide synthetic material, 1-0mm of electric melting iron aluminum magnesium oxide synthetic material and 0.045-0mm of electric melting iron aluminum magnesium oxide synthetic material in a mass ratio of 10:3:3 in a stirrer, uniformly stirring, adding hematite which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material and calcium oxide clinker which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material into the stirrer, and ball-milling in a ball mill for 30-60 min until the mixture is uniformly mixed into mixed powder;
(2) mixing the dextrin powder and water according to a mass ratio of 0.4: 1, adding chitosan with the mass of 0.5-0.8 times of that of the dextrin powder and potassium nitrate with the mass of 0.2-0.4 times of that of the dextrin powder, adjusting the pH value to 3-4, stirring and mixing to obtain a dextrin powder mixed dispersion liquid, and mixing the dextrin powder mixed dispersion liquid with a butyl titanate alcohol solution according to the volume ratio of 6: 1-8: 1, mixing to obtain mixed dextrin liquid;
(3) mixing the mixed powder obtained in the step (1) with the mixed dextrin liquid obtained in the step (2) according to a mass ratio of 9: 1, mixing to obtain mixed slurry;
(4) uniformly mixing and stirring the mixed slurry obtained in the step (3) on an edge runner mill, continuously turning the material, mixing the mixed slurry into a material which can be agglomerated and is still loose for 10-30 minutes to prevent the material from being non-uniform, and ageing the material for 30-60 minutes to obtain a blank;
(5) pressing and forming the blank obtained in the step (4) on a 630t friction press or a 1000-ton hydraulic press to obtain a pretreated blank;
(6) and (5) placing the pretreated blank obtained in the step (5) in a drying chamber for drying treatment, and then sending the blank into a high-temperature kiln for firing to obtain the iron-aluminum-magnesium oxide composite material product.
Preferably, the method for preparing the butyl titanate alcoholic solution in the step (2) is to dissolve 5mL of butyl titanate in 10mL of absolute ethanol, add 1mL of acetylacetone, and stir uniformly to obtain the butyl titanate alcoholic solution.
As an optimization, the drying treatment in the step (6) is carried out for 24-48 hours at room temperature-80 ℃, then for 24-48 hours at 80-120 ℃, and finally for 24 hours at 200 ℃; the firing condition is to fire for 3-6 h at 1600-1650 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention adds mixed paste liquid and electric melting iron aluminum magnesium oxide composite material when preparing iron aluminum magnesium oxide composite material products. Firstly, the mixed dextrin liquid contains dextrin and chitosan, and has good film forming property after stirring and mixing, after the aggregate is added into the mixed dextrin liquid, the aggregate can be uniformly dispersed, so that the density of the product after firing is improved, and further the strength and the heat resistance of the product are improved, secondly, the mixed dextrin liquid also contains alcoholic solution of butyl titanate and potassium nitrate, in the high-temperature firing process of the product, the alcoholic solution of butyl titanate and the potassium nitrate can form potassium tetratitanate at a high temperature, the bonding force in the product can be improved due to the formation of the potassium tetratitanate, the heat resistance and the strength of the product are improved, and the dextrin and the chitosan can be promoted to be carbonized, so that the product is uniformly heated when being heated, and the service performance of the product is improved; in addition, as the product directly uses the electric melting iron aluminum magnesium oxide synthetic material in the preparation process, the processing method has simple process, low cost, strong operability and easy implementation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In order to more clearly illustrate the method provided by the present invention, the following examples are provided to illustrate the method for testing each index of the iron aluminum magnesium oxide composite material product manufactured in the following examples as follows:
alkali resistance: the product obtained in each example and the comparative milled product are placed in a sodium hydroxide solution with the concentration of 0.5mol/L, and after the product is soaked for 600 hours, the surface condition of a test piece is observed.
Fire resistance: after the products obtained in the examples and the comparative milled products are placed in flames and baked for 600 hours, the surface conditions of the test pieces are observed.
Example 1
An iron-aluminum-magnesium oxide composite material product mainly comprises the following components in parts by weight: 40 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 10 parts of hematite, 10 parts of calcium oxide clinker and 10 parts of mixed paste liquid.
A manufacturing method of an iron-aluminum-magnesium oxide composite material product mainly comprises the following steps:
(1) mixing 4-1mm of electric melting iron aluminum magnesium oxide synthetic material, 1-0mm of electric melting iron aluminum magnesium oxide synthetic material and 0.045-0mm of electric melting iron aluminum magnesium oxide synthetic material in a mass ratio of 10:3:3 in a stirrer, uniformly stirring, adding hematite which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material and calcium oxide clinker which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material into the stirrer, and ball-milling in a ball mill for 30-60 min until the mixture is uniformly mixed into mixed powder;
(2) mixing the dextrin powder and water according to a mass ratio of 0.4: 1, adding chitosan with the mass of 0.5 time of that of the dextrin powder and potassium nitrate with the mass of 0.3 time of that of the dextrin powder, adjusting the pH value to 3, stirring and mixing to obtain a dextrin powder mixed dispersion liquid, and mixing the dextrin powder mixed dispersion liquid with a tetrabutyl titanate alcohol solution according to the volume ratio of 6: 1, mixing to obtain mixed dextrin liquid;
(3) mixing the mixed powder obtained in the step (1) with the mixed dextrin liquid obtained in the step (2) according to a mass ratio of 9: 1, mixing to obtain mixed slurry;
(4) uniformly mixing and stirring the mixed slurry obtained in the step (3) on an edge runner mill, continuously turning the material, mixing the mixed slurry into a material which can be agglomerated and can be loosened within 30 minutes to prevent the material from being non-uniform, and ageing the material for 60 minutes to obtain a blank;
(5) pressing and forming the blank obtained in the step (4) on a 1000-ton hydraulic press to obtain a pretreated blank;
(6) and (5) placing the pretreated blank obtained in the step (5) in a drying chamber for drying treatment, and then sending the blank into a high-temperature kiln for firing to obtain the iron-aluminum-magnesium oxide composite material product.
Preferably, the method for preparing the butyl titanate alcoholic solution in the step (2) is to dissolve 5mL of butyl titanate in 10mL of absolute ethanol, add 1mL of acetylacetone, and stir uniformly to obtain the butyl titanate alcoholic solution.
Preferably, the drying treatment in the step (6) is performed in a manner of drying for 48 hours at room temperature, then drying for 36 hours at 100 ℃, and finally drying for 24 hours at 200 ℃; the firing condition is that the firing is carried out for 5 hours under the temperature of 1600 ℃.
Example 2
An iron-aluminum-magnesium oxide composite material product mainly comprises the following components in parts by weight: 40 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 10 parts of hematite, 10 parts of calcium oxide clinker and 10 parts of mixed paste liquid.
A manufacturing method of an iron-aluminum-magnesium oxide composite material product mainly comprises the following steps:
(1) mixing 4-1mm of electric melting iron aluminum magnesium oxide synthetic material, 1-0mm of electric melting iron aluminum magnesium oxide synthetic material and 0.045-0mm of electric melting iron aluminum magnesium oxide synthetic material in a mass ratio of 10:3:3 in a stirrer, uniformly stirring, adding hematite which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material and calcium oxide clinker which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material into the stirrer, and ball-milling in a ball mill for 30-60 min until the mixture is uniformly mixed into mixed powder;
(2) mixing the dextrin powder and water according to a mass ratio of 0.4: 1, adding potassium nitrate with the mass of 0.3 time of that of the dextrin powder, adjusting the pH value to 3, stirring and mixing to obtain a dextrin powder mixed dispersion liquid, and mixing the dextrin powder mixed dispersion liquid with a butyl titanate alcohol solution according to the volume ratio of 6: 1, mixing to obtain mixed dextrin liquid;
(3) mixing the mixed powder obtained in the step (1) with the mixed dextrin liquid obtained in the step (2) according to a mass ratio of 9: 1, mixing to obtain mixed slurry;
(4) uniformly mixing and stirring the mixed slurry obtained in the step (3) on an edge runner mill, continuously turning the material, mixing the mixed slurry into a material which can be agglomerated and can be loosened within 30 minutes to prevent the material from being non-uniform, and ageing the material for 60 minutes to obtain a blank;
(5) pressing and forming the blank obtained in the step (4) on a 1000-ton hydraulic press to obtain a pretreated blank;
(6) and (5) placing the pretreated blank obtained in the step (5) in a drying chamber for drying treatment, and then sending the blank into a high-temperature kiln for firing to obtain the iron-aluminum-magnesium oxide composite material product.
Preferably, the method for preparing the butyl titanate alcoholic solution in the step (2) is to dissolve 5mL of butyl titanate in 10mL of absolute ethanol, add 1mL of acetylacetone, and stir uniformly to obtain the butyl titanate alcoholic solution.
Preferably, the drying treatment in the step (6) is performed in a manner of drying for 48 hours at room temperature, then drying for 36 hours at 100 ℃, and finally drying for 24 hours at 200 ℃; the firing condition is that the firing is carried out for 5 hours under the temperature of 1600 ℃.
Example 3
An iron-aluminum-magnesium oxide composite material product mainly comprises the following components in parts by weight: 40 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 10 parts of hematite, 10 parts of calcium oxide clinker and 10 parts of mixed paste liquid.
A manufacturing method of an iron-aluminum-magnesium oxide composite material product mainly comprises the following steps:
(1) mixing 4-1mm of electric melting iron aluminum magnesium oxide synthetic material, 1-0mm of electric melting iron aluminum magnesium oxide synthetic material and 0.045-0mm of electric melting iron aluminum magnesium oxide synthetic material in a mass ratio of 10:3:3 in a stirrer, uniformly stirring, adding hematite which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material and calcium oxide clinker which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material into the stirrer, and ball-milling in a ball mill for 30-60 min until the mixture is uniformly mixed into mixed powder;
(2) mixing the dextrin powder and water according to a mass ratio of 0.4: 1, mixing, adding chitosan with the mass of 0.5 time of that of the dextrin powder and potassium nitrate with the mass of 0.3 time of that of the dextrin powder, adjusting the pH value to 3, and stirring and mixing to obtain mixed dextrin liquid;
(3) mixing the mixed powder obtained in the step (1) with the mixed dextrin liquid obtained in the step (2) according to a mass ratio of 9: 1, mixing to obtain mixed slurry;
(4) uniformly mixing and stirring the mixed slurry obtained in the step (3) on an edge runner mill, continuously turning the material, mixing the mixed slurry into a material which can be agglomerated and can be loosened within 30 minutes to prevent the material from being non-uniform, and ageing the material for 60 minutes to obtain a blank;
(5) pressing and forming the blank obtained in the step (4) on a 1000-ton hydraulic press to obtain a pretreated blank;
(6) and (5) placing the pretreated blank obtained in the step (5) in a drying chamber for drying treatment, and then sending the blank into a high-temperature kiln for firing to obtain the iron-aluminum-magnesium oxide composite material product.
Preferably, the drying treatment in the step (6) is performed in a manner of drying for 48 hours at room temperature, then drying for 36 hours at 100 ℃, and finally drying for 24 hours at 200 ℃; the firing condition is that the firing is carried out for 5 hours under the temperature of 1600 ℃.
Comparative example
An iron-aluminum-magnesium oxide composite material product mainly comprises the following components in parts by weight: 40 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 10 parts of hematite, 10 parts of calcium oxide clinker and 10 parts of paste liquid.
A manufacturing method of an iron-aluminum-magnesium oxide composite material product mainly comprises the following steps:
(1) mixing 4-1mm of electric melting iron aluminum magnesium oxide synthetic material, 1-0mm of electric melting iron aluminum magnesium oxide synthetic material and 0.045-0mm of electric melting iron aluminum magnesium oxide synthetic material in a mass ratio of 10:3:3 in a stirrer, uniformly stirring, adding hematite which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material and calcium oxide clinker which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material into the stirrer, and ball-milling in a ball mill for 30-60 min until the mixture is uniformly mixed into mixed powder;
(2) mixing the dextrin powder and water according to a mass ratio of 0.4: 1, adding potassium nitrate with the mass of 0.3 time of that of the dextrin powder, adjusting the pH value to 3, and stirring and mixing to obtain a dextrin solution;
(3) mixing the mixed powder obtained in the step (1) with the dextrin liquid obtained in the step (2) according to a mass ratio of 9: 1, mixing to obtain mixed slurry;
(4) uniformly mixing and stirring the mixed slurry obtained in the step (3) on an edge runner mill, continuously turning the material, mixing the mixed slurry into a material which can be agglomerated and can be loosened within 30 minutes to prevent the material from being non-uniform, and ageing the material for 60 minutes to obtain a blank;
(5) pressing and forming the blank obtained in the step (4) on a 1000-ton hydraulic press to obtain a pretreated blank;
(6) and (5) placing the pretreated blank obtained in the step (5) in a drying chamber for drying treatment, and then sending the blank into a high-temperature kiln for firing to obtain the iron-aluminum-magnesium oxide composite material product.
Preferably, the drying treatment in the step (6) is performed in a manner of drying for 48 hours at room temperature, then drying for 36 hours at 100 ℃, and finally drying for 24 hours at 200 ℃; the firing condition is that the firing is carried out for 5 hours under the temperature of 1600 ℃.
Examples of effects
Table 1 below gives the results of performance analysis of the iron aluminum magnesium oxide composite articles using examples 1 to 3 of the present invention and comparative examples.
TABLE 1
From the comparison of the experimental data of example 1 and the comparative example in table 1, it can be found that the use of the mixed dextrin solution in the preparation of the iron aluminum magnesium oxide composite material product can effectively improve the fire resistance and alkali resistance of the product, and the use of the electric smelting iron aluminum magnesium oxide composite material as the raw material in the product makes the processing method of the invention simple in process, low in cost, strong in operability and easy to implement.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. An iron-aluminum-magnesium oxide composite material product is characterized by mainly comprising the following raw material components in parts by weight: 35-45 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 10-20 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 5-15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 5-15 parts of hematite and 5-15 parts of calcium oxide clinker.
2. The iron aluminum magnesium oxide composite material product according to claim 1, further comprising the following raw material components in parts by weight: 3-10 parts of mixed dextrin liquid.
3. An iron aluminum magnesium oxide composite material product according to claim 2, wherein said electrofused iron aluminum magnesium oxide composite material comprises the following components: 15-30% of Fe2O3, 35-40% of Al2O3, 25-40% of MgO, less than or equal to 10% of SiO2 and less than or equal to 15% of CaO; the content of Fe2O3 in the hematite is more than or equal to 93 percent; the CaO content in the calcium oxide clinker is more than or equal to 95 percent.
4. The iron aluminum magnesium oxide composite material product as claimed in claim 3, wherein the mixed dextrin solution is prepared from dextrin powder, water, butyl titanate alcoholic solution, potassium nitrate solution and chitosan solution; the solubility of the dextrin powder is more than 95 percent, the ash content is less than 1 percent, and the water content is less than 6 percent.
5. The iron aluminum magnesium oxide composite material product according to claim 4, wherein the iron aluminum magnesium oxide composite material product mainly comprises the following raw material components in parts by weight: 40 parts of 4-1mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 1-0mm electric melting iron aluminum magnesium oxide synthetic material, 15 parts of 0.045-0mm electric melting iron aluminum magnesium oxide synthetic material, 10 parts of hematite, 10 parts of calcium oxide clinker and 10 parts of mixed paste liquid.
6. An iron aluminum magnesium oxide composite material product according to claim 5, characterized in that the manufacturing method of the iron aluminum magnesium oxide composite material product mainly comprises the following steps:
(1) mixing 4-1mm of electric melting iron aluminum magnesium oxide synthetic material, 1-0mm of electric melting iron aluminum magnesium oxide synthetic material and 0.045-0mm of electric melting iron aluminum magnesium oxide synthetic material in a mass ratio of 10:3:3 in a stirrer, uniformly stirring, adding hematite which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material and calcium oxide clinker which is 0.25 time of the mass of the 4-1mm of electric melting iron aluminum magnesium oxide synthetic material into the stirrer, and ball-milling in a ball mill for 30-60 min until the mixture is uniformly mixed into mixed powder;
(2) mixing the dextrin powder and water according to a mass ratio of 0.4: 1, adding chitosan with the mass of 0.5-0.8 times of that of the dextrin powder and potassium nitrate with the mass of 0.2-0.4 times of that of the dextrin powder, adjusting the pH value to 3-4, stirring and mixing to obtain a dextrin powder mixed dispersion liquid, and mixing the dextrin powder mixed dispersion liquid with a butyl titanate alcohol solution according to the volume ratio of 6: 1-8: 1, mixing to obtain mixed dextrin liquid;
(3) mixing the mixed powder obtained in the step (1) with the mixed dextrin liquid obtained in the step (2) according to a mass ratio of 9: 1, mixing to obtain mixed slurry;
(4) uniformly mixing and stirring the mixed slurry obtained in the step (3) on an edge runner mill, continuously turning the material, mixing the mixed slurry into a material which can be agglomerated and is still loose for 10-30 minutes to prevent the material from being non-uniform, and ageing the material for 30-60 minutes to obtain a blank;
(5) pressing and forming the blank obtained in the step (4) on a 630t friction press or a 1000-ton hydraulic press to obtain a pretreated blank;
(6) and (5) placing the pretreated blank obtained in the step (5) in a drying chamber for drying treatment, and then sending the blank into a high-temperature kiln for firing to obtain the iron-aluminum-magnesium oxide composite material product.
7. The method for preparing an iron aluminum magnesium oxide composite material product according to claim 6, wherein the method for preparing the butyl titanate alcoholic solution in the step (2) is that 5mL of butyl titanate is dissolved in 10mL of absolute ethanol, 1mL of acetylacetone is added, and the mixture is stirred uniformly to obtain the butyl titanate alcoholic solution.
8. The method for manufacturing an iron aluminum magnesium oxide composite material product according to claim 6, wherein the drying treatment in the step (6) is performed by drying at room temperature to 80 ℃ for 24 to 48 hours, drying at 80 to 120 ℃ for 24 to 48 hours, and finally drying at 200 ℃ for 24 hours; the firing condition is to fire for 3-6 h at 1600-1650 ℃.
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