CN109437939A - A kind of fire clay and preparation method thereof - Google Patents
A kind of fire clay and preparation method thereof Download PDFInfo
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- CN109437939A CN109437939A CN201811648778.8A CN201811648778A CN109437939A CN 109437939 A CN109437939 A CN 109437939A CN 201811648778 A CN201811648778 A CN 201811648778A CN 109437939 A CN109437939 A CN 109437939A
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Abstract
The present invention relates to fire resisting material fields, and in particular to a kind of fire clay and preparation method thereof.A kind of fire clay, it is made of plurality of raw materials, in parts by weight, plurality of raw materials includes: 20-50 parts of the useless corundum material of brick, 5-10 parts of alumina powder, powder 20-50 parts of homogenizing, 3-5 parts of carborundum powder, white clay 5-10 parts of Guangxi, 5-10 parts of graphite powder, 2-5 parts of binder and 23-26 parts of bonding agent.The fire clay is low in cost, and has outstanding high-temperature behavior, corrosion resistance and adhesion strength.The preparation method of above-mentioned fire clay, easy implementation easy to operate, fire clay low in cost and outstanding quality can be prepared by the preparation method.
Description
Technical field
The present invention relates to fire resisting material fields, and in particular to a kind of fire clay and preparation method thereof.
Background technique
In the preparation process of metallurgical production, fire clay is essential consumables.Its gap for being used for filling equipment, will
Each molded article bonding is integral, to improve the service life and safety of metallurgical equipment.Such as the sliding of ladle and tundish
Gap between nozzle assembly, the gap between air brick of steel ladle, is required to be filled using fire clay, due to slide gate nozzle
Very harsh with the use condition of the parts such as air brick, the careless slightly high-temperature molten steel that will result in is seeped along assembly gap chamotte
Leakage, is also possible to will cause industrial accident when serious, therefore, the high-temperature behavior of used fire clay, corrosion resistance and viscous
The various aspects of performance such as knotting strength are required to reach high requirement, and quality is directly related to safety and the metallurgy of metallurgical process
The service life and cost of equipment.
For the requisite quality for making fire clay, white fused alumina and dense alumina etc. are typically contained in the prepared composition of traditional fire clay
High-quality corundum raw material, since metallurgy industry production scale is generally larger, the usage amount of fire clay is larger, and high-quality corundum raw material
Higher cost causes whole production cost to increase.On the other hand, a large amount of corundum bricks be will use in metallurgical production process and carry out equipment
Internal masonry, life of equipment can split out later the crackle generated in more useless corundum brick and corundum brick production process and
Corner waste product etc., useless corundum brick can not recycle, and again result in production waste, therefore, to reduce being produced into metallurgical process
This, recycles useless corundum brick, and urgent need researches and develops a kind of low-cost high quality fire clay, while meeting low in cost,
The various aspects of performance such as high-temperature behavior, corrosion resistance and adhesion strength can reach the performance of traditional quality refractory mud.
Given this special to propose the application.
Summary of the invention
It is low in cost the purpose of the present invention is to provide a kind of fire clay, and there is outstanding high-temperature behavior, anti-erosion
Property and adhesion strength.
Another object of the present invention is to provide a kind of preparation method of above-mentioned fire clay, easy implementation easy to operate,
Fire clay low in cost and outstanding quality can be prepared by the preparation method.
The present invention solves its technical problem and adopts the following technical solutions to realize:
The present invention proposes a kind of fire clay, is made of plurality of raw materials, and in parts by weight, plurality of raw materials includes: useless corundum
20-50 parts of the material of brick, 5-10 parts of alumina powder, homogenizing powder 20-50 parts, 3-5 parts of carborundum powder, white clay 5-10 parts of Guangxi, graphite
5-10 parts of powder, 2-5 parts of binder and 23-26 parts of bonding agent.
The present invention proposes a kind of preparation method of fire clay, comprising the following steps:
The useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Premix；
Binder is added in bonding agent and is uniformly mixed to obtain pre-mixing agent；
Pre-mixing agent is added in premix and is mixed evenly.
The beneficial effect of the fire clay of the embodiment of the present invention and preparation method thereof is:
The fire clay of the embodiment of the present invention passes through the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi White
Mutual synergistic function between mud, graphite powder, binder and bonding agent, so that the useless corundum material of brick is selected effectively to be dropped
Under the premise of this, it also can guarantee that fire clay has outstanding high-temperature behavior, adhesion strength and corrosion-resistant property.
The preparation method of the embodiment of the present invention, easy implementation easy to operate are suitable by the mixing in limitation preparation process
Sequence, further enhances the adhesive property of fire clay, then guarantees the fire clay phase that the fire clay can reach and use white fused alumina
When performance.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Fire clay of the embodiment of the present invention and preparation method thereof is specifically described below.
A kind of fire clay provided in an embodiment of the present invention, is made of plurality of raw materials, in parts by weight, plurality of raw materials packet
It includes: useless 20-50 parts of the corundum material of brick, 5-10 parts of alumina powder, homogenizing powder 20-50 parts, 3-5 parts of carborundum powder, Guangxi white clay 5-
10 parts, 5-10 parts of graphite powder, 2-5 parts of binder and 23-26 parts of bonding agent.
It can guarantee that each raw material gives full play to its effect by the interaction of above-mentioned substance compatibility, meanwhile, each group
/ synergistic effect or synergistic effect can be generated, strengthen the correlation between the effect of each component, and weaken
The side effect of specific components then makes the fire clay being prepared by above-mentioned raw materials have outstanding high-temperature behavior, anti-erosion
Property and adhesion strength.For example, alumina powder can be mutually synergistic with the useless corundum material of brick, the height of fire clay is further promoted
Warm nature energy, also, alumina powder can supply the deficiency of alumina content in the useless corundum material of brick.Meanwhile using aforementioned proportion
It can guarantee that the fire clay being prepared has outstanding fire resistance and can reach higher access times, if more rescaling,
Then may cause synergistic effect reduces or disappears, and then influences the performance of fire clay.
Further, in parts by weight, the corundum material of brick of giving up includes: 10-20 parts of useless corundum brick particle and useless corundum brick powder 10-
30 parts.Wherein, the steel scrap jade brick and corundum brick that useless corundum brick particle and useless corundum brick powder are discarded by metallurgical production produce
The useless brick generated in the process crushes to obtain.The useless corundum material of brick is low in cost, and the primary raw material for using it as fire clay replaces
The high-quality corundum of tradition, can be effectively reduced the cost of fire clay, and recycle to waste, has reached the work of cost efficiency
With.Wherein, in order to make fire clay that there is better high-temperature behavior guarantee corrosion resistance and adhesion strength while, it need to be by useless corundum
10-20 parts of brick particle is prepared with 10-30 parts of useless corundum brick powder of compatibility, and useless corundum brick particle can effectively increase fire resisting
The corrosion resistance of mud, useless corundum brick powder can be effectively improved the adhesion strength of fire clay.
Further, give up corundum brick particle granularity≤0.5 millimeter, give up corundum brick powder granularity be 180 mesh and 320 mesh,
The granularity of alumina powder is 1-2 microns, and the granularity for being homogenized powder is 180 mesh, and the granularity of carborundum powder is 320 mesh, graphite powder
Granularity is 100-200 mesh, and the granularity of binder is 180 mesh.By the way that the granularity limitation of each raw material within the above range, can be made
Obtaining has more excellent adhesion strength by the fire clay that above-mentioned raw materials are prepared.
Further, by mass percentage, the ingredient of the useless corundum material of brick of the present embodiment include: aluminium oxide >=88%,
Iron oxide 0-1.2% and sodium oxide molybdena 0-0.4%.The aluminium oxide of mass fraction >=88% can effectively enhance the high temperature of fire clay
Performance and corrosion resistance.
Further, by mass percentage, the ingredient of the alumina powder of the present embodiment include: aluminium oxide >=99%,
Iron oxide 0-0.1% and sodium oxide molybdena 0-0.4%.Alumina powder can generate synergy with the above-mentioned useless corundum material of brick, make
Fire clay has stronger fire resistance, hardness and corrosion resistance, also, the aluminium oxide of its mass fraction >=99% can be more
The deficiency of alumina content in the waste filling corundum material of brick while so that the fire clay is not only met low in cost but also can have outstanding resistance to
High-temperature behavior and erosion-resisting characteristics.
Further, by mass percentage, the ingredient of the homogenizing powder of the present embodiment includes: aluminium oxide >=80%, oxidation
The resultant 0-0.4% of iron 0-1.8% and potassium oxide and sodium oxide molybdena.Homogenizing powder is used to replace a part of white fused alumina as raw material,
It can be effectively reduced the cost of fire clay, and can increase the compactness of fire clay, also, adding by above-mentioned alumina powder
Enter to make up the deficiency of alumina content in homogenizing powder, make the fire clay not only met while low in cost, compactness is good but also
Can have outstanding high temperature resistance and erosion-resisting characteristics.
Further, by mass percentage, in the carborundum powder of the present embodiment silicon carbide mass fraction >=95%.Carbon
SiClx powder is also known as diamond dust or fire sand, is most widely used, most economical one of refractory material, with outstanding corrosion resistance
Energy and high temperature resistance, can further promote the high temperature resistance and erosion-resisting characteristics of fire clay on the basis of aluminium oxide,
And it can enhance the heating conduction of fire clay entirety with outstanding heating conduction, avoid the fire clay being laid at the mouth of a river
The case where rupture is generated due to uneven heating is further increased the safety that the fire clay uses, it is resistance to further to extend this
The service life of chamotte.
Further, by mass percentage, in the graphite powder of the present embodiment carbon mass fraction >=95%.Graphite has
Outstanding high temperature resistance, fusing point is 3850 ± 50 DEG C, and even across superhigh temperature electric arc calcination, the loss of weight is also very
It is small, therefore its high temperature resistance that can further increase fire clay, meanwhile, thermal expansion coefficient is very low, can prevent fire clay
Because of the issuable destruction of high-temperature expansion, the safety of the fire clay is further increased, also, the intensity of graphite is improved with temperature
And reinforce, field of metallurgy, the temperature at the mouth of a river of ladle and tundish enables to the strength enhancing of graphite by about one time, thus into
One step enhances the intensity of fire clay, and side improves the service life and safety of fire clay.
Further, Guangxi white clay is a kind of soft kaolin, can also be soft flame-proof clay, by mass percentage
Meter, main chemical compositions are silica 45.3-51.6%, aluminum oxide 30.0-36.8%, di-iron trioxide 0.65-
2.2%.Its plasticity is good, good fluidity, associativity are good, and refractoriness is greater than 1700 DEG C, can meet high-temperature behavior
On the basis of, adhesion strength and mobility required for fire clay are provided, and it is viscous to mix other raw materials in fire clay uniformly
It becames one.
Further, binder is any one in dextrin, cellulose and starch or two kinds of combinations.It acts as
The caking property that fire clay is further enhanced on the basis of the white clay of Guangxi makes the various raw materials in fire clay be thoroughly mixed uniformly simultaneously phase
Mutually bonding, wherein dextrin, cellulose and starch can play said effect, and thrin can be selected or mix the two
It uses, further enhances the caking property of fire clay.
Further, bonding agent is water.The effect of bonding agent is matched with Guangxi white clay, binder, is made in fire clay
Each powder raw material, which is thoroughly mixed, is integrated and presents pureed, while water had not only been able to satisfy said effect as bonding agent but also meets
It is low in cost, it kills two birds with one stone, and obtain more convenient with use.
The present invention also provides a kind of preparation methods of fire clay, comprising the following steps:
S1, the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Obtain premix.
Specifically, by above-mentioned raw materials according to 20-50 parts of the useless corundum material of brick, 5-10 parts of alumina powder, homogenizing powder 20-50
Part, 3-5 parts of carborundum powder, white clay 5-10 parts of Guangxi and 5-10 parts of graphite powder of ratio, which are packed into blender, to be uniformly mixed
Obtain premix.The step be by each powder raw material premix uniformly, avoid being directly added into bonding agent issuable with binder
Local mixing unevenness and agglomeration.
S2, pre-mixing agent will be uniformly mixed to obtain in binder addition bonding agent.
Specifically, 2-5 parts of binder are gradually added into 23-26 parts of bonding agent, are stirred continuously in the process equal to be formed
One pre-mixing agent.
S3, it will be mixed evenly in pre-mixing agent addition premix.
Specifically, above-mentioned pre-mixing agent is gradually added into the above-mentioned blender equipped with premix and is stirred evenly.
The easy implementation easy to operate of the preparation method of the fire clay, by the preparation method can prepare it is low in cost and
The outstanding fire clay of quality.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of fire clays, are made of plurality of raw materials, and in parts by weight, plurality of raw materials includes: useless rigid
20 parts of the beautiful material of brick, 10 parts of alumina powder, 20 parts of powder of homogenizing, 5 parts of carborundum powder, 5 parts of Guangxi white clay, 10 parts of graphite powder, bonding
2 parts of agent and 26 parts of bonding agent, wherein the useless corundum material of brick includes: 10 parts of 10 parts of useless corundum brick particle and useless corundum brick powder.
The granularity of useless corundum brick particle is 0.5 millimeter, and the granularity for the corundum brick powder that gives up is 180 mesh and each 5 parts of 320 mesh, oxidation
The granularity of aluminium micro mist is 2 microns, and the granularity for being homogenized powder is 180 mesh, and the granularity of carborundum powder is 320 mesh, and the granularity of graphite powder is
200 mesh, the granularity of binder are 180 mesh.
Binder is dextrin, and bonding agent is water.
The present embodiment also provides a kind of preparation method of fire clay, comprising the following steps:
S1, the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Obtain premix；
S2, pre-mixing agent will be uniformly mixed to obtain in binder addition bonding agent；
S3, it will be mixed evenly in pre-mixing agent addition premix.
Embodiment 2
The present embodiment provides a kind of fire clays, are made of plurality of raw materials, and in parts by weight, plurality of raw materials includes: useless rigid
50 parts of the beautiful material of brick, 5 parts of alumina powder, homogenizing 50 parts of powder, 3 parts of carborundum powder, 10 parts of Guangxi white clay, 5 parts of graphite powder, binder
5 parts and 23 parts of bonding agent, wherein the useless corundum material of brick includes: 30 parts of 20 parts of useless corundum brick particle and useless corundum brick powder.
The granularity of useless corundum brick particle is 0.1 millimeter, and the granularity for the corundum brick powder that gives up is 180 mesh and each 15 parts of 320 mesh, oxidation
The granularity of aluminium micro mist is 1 micron, and the granularity for being homogenized powder is 180 mesh, and the granularity of carborundum powder is 320 mesh, and the granularity of graphite powder is
100 mesh, the granularity of binder are 180 mesh.
Binder is cellulose, and bonding agent is water.
The present embodiment also provides a kind of preparation method of fire clay, comprising the following steps:
S1, the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Obtain premix；
S2, pre-mixing agent will be uniformly mixed to obtain in binder addition bonding agent；
S3, it will be mixed evenly in pre-mixing agent addition premix.
Embodiment 3
The present embodiment provides a kind of fire clays, are made of plurality of raw materials, and in parts by weight, plurality of raw materials includes: useless rigid
30 parts of the beautiful material of brick, 8 parts of alumina powder, 30 parts of powder of homogenizing, 4.5 parts of carborundum powder, 7 parts of Guangxi white clay, 8 parts of graphite powder, bonding
3 parts of agent and 25 parts of bonding agent, wherein the useless corundum material of brick includes: 20 parts of 10 parts of useless corundum brick particle and useless corundum brick powder.
The granularity of useless corundum brick particle is 0.4 millimeter, and the granularity for the corundum brick powder that gives up is 180 mesh and each 10 parts of 320 mesh, oxidation
The granularity of aluminium micro mist is 1.8 microns, and the granularity for being homogenized powder is 180 mesh, and the granularity of carborundum powder is 320 mesh, the granularity of graphite powder
For 180 mesh, the granularity of binder is 180 mesh.
Binder is starch, and bonding agent is water.
The present embodiment also provides a kind of preparation method of fire clay, comprising the following steps:
S1, the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Obtain premix；
S2, pre-mixing agent will be uniformly mixed to obtain in binder addition bonding agent；
S3, it will be mixed evenly in pre-mixing agent addition premix.
Embodiment 4
The present embodiment provides a kind of fire clays, are made of plurality of raw materials, and in parts by weight, plurality of raw materials includes: useless rigid
40 parts of the beautiful material of brick, 6 parts of alumina powder, 40 parts of powder of homogenizing, 3.5 parts of carborundum powder, 8 parts of Guangxi white clay, 7 parts of graphite powder, bonding
4 parts of agent and 24 parts of bonding agent, wherein the useless corundum material of brick includes: 25 parts of 15 parts of useless corundum brick particle and useless corundum brick powder.
The granularity of useless corundum brick particle is 0.2 millimeter, and the granularity for the corundum brick powder that gives up is 15 parts of 10 parts of 180 mesh and 320 mesh, oxygen
The granularity for changing aluminium micro mist is 1.2 microns, and the granularity for being homogenized powder is 180 mesh, and the granularity of carborundum powder is 320 mesh, the grain of graphite powder
Degree is 110 mesh, and the granularity of binder is 180 mesh.
Binder be dextrin and cellulose mixture, dextrin with each 2 parts of cellulose, bonding agent is water.
The present embodiment also provides a kind of preparation method of fire clay, comprising the following steps:
S1, the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Obtain premix；
S2, pre-mixing agent will be uniformly mixed to obtain in binder addition bonding agent；
S3, it will be mixed evenly in pre-mixing agent addition premix.
Embodiment 5
The present embodiment provides a kind of fire clays, are made of plurality of raw materials, and in parts by weight, plurality of raw materials includes: useless rigid
37 parts of the beautiful material of brick, 7.6 parts of alumina powder, homogenizing 38 parts of powder, 4.7 parts of carborundum powder, 8.4 parts of Guangxi white clay, graphite powder 7.2
Part, 4.3 parts of binder and 24 parts of bonding agent, wherein the useless corundum material of brick includes: 11 parts of useless corundum brick particle and useless corundum brick powder
26 parts.
The granularity of useless corundum brick particle is 0.3 millimeter, and the granularity for the corundum brick powder that gives up is 180 mesh and each 13 parts of 320 mesh, oxidation
The granularity of aluminium micro mist is 1.5 microns, and the granularity for being homogenized powder is 180 mesh, and the granularity of carborundum powder is 320 mesh, the granularity of graphite powder
For 160 mesh, the granularity of binder is 180 mesh.
Binder is the mixture of dextrin and starch, and 3.1 parts of dextrin, 1.2 parts of starch, bonding agent is water.
The present embodiment also provides a kind of preparation method of fire clay, comprising the following steps:
S1, the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay and graphite powder are uniformly mixed
Obtain premix；
S2, pre-mixing agent will be uniformly mixed to obtain in binder addition bonding agent；
S3, it will be mixed evenly in pre-mixing agent addition premix.
Comparative example 1
Difference with embodiment 5 is that the useless corundum material of brick in raw material replaces with white fused alumina.
Comparative example 2
The difference from example 2 is that plurality of raw materials includes: 60 parts of the useless corundum material of brick, 4 parts of alumina powder, homogenizing powder
60 parts, 2.4 parts of carborundum powder, 15 parts of Guangxi white clay, 4.5 parts of graphite powder, 6 parts of binder and 20 parts of bonding agent, wherein useless rigid
The beautiful material of brick includes: 30 parts of 30 parts of useless corundum brick particle and useless corundum brick powder.
Comparative example 3
Difference with embodiment 5 is that give up 31 parts of 6 parts of corundum brick particle and useless corundum brick powder.
Comparative example 4
The difference from embodiment 1 is that the granularity of useless corundum brick particle is 0.8 millimeter, the granularity for the corundum brick powder that gives up is 160
Mesh, the granularity of alumina powder are 3 microns, and the granularity for being homogenized powder is 140 mesh, and the granularity of carborundum powder is 360 mesh, graphite powder
Granularity is 90 mesh, and the granularity of binder is 230 mesh.
Comparative example 5
Difference with embodiment 5 is, by the useless corundum material of brick, alumina powder, homogenizing powder, carborundum powder, Guangxi white clay,
Graphite powder, binder and bonding agent are directly mixed evenly.
Experimental example 1
Respectively according to the experimental method of " GBT2994-2008 " to the fire clay of embodiment 1-5 and comparative example 1-5 from fire resisting
Degree is detected with the aspect of adhesion strength two, and test respectively under normal circumstances using heat with verification quality, detection is tied
Fruit is shown in Table 1.
Table 1
According to table 1: (1) fire clay that 1-5 of the embodiment of the present invention is provided uses the premise of useless corundum material of brick drop originally
Under, it can reach and use the comparable performance of white fused alumina；(2) by the compatibility of limitation raw material, granularity and preparation mixing when
Sequentially, it can effectively enhance the refractoriness of fire clay, adhesion strength and effectively use heat.
To sum up, the fire clay that the embodiment of the present invention proposes passes through the useless corundum material of brick, alumina powder, homogenizing powder, silicon carbide
Mutual synergistic function between powder, Guangxi white clay, graphite powder, binder and bonding agent, so that selecting the useless corundum material of brick
It carries out under the premise of effectively dropping this, also can guarantee that fire clay has outstanding high-temperature behavior, adhesion strength and corrosion-resistant property, lead to
The ratio of limitation above-mentioned raw materials and the granularity of each raw material are crossed, the performance of fire clay is further enhanced；The system of the fire clay
Preparation Method further enhances the adhesive property of fire clay, then guarantees that this is resistance to by the order by merging in limitation preparation process
Chamotte can reach and the comparable performance of fire clay using white fused alumina.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of fire clay, which is characterized in that it is made of plurality of raw materials, and in parts by weight, a variety of raw materials include: useless rigid
Beautiful material of brick 20-50 parts, 5-10 parts of alumina powder, homogenizing powder 20-50 parts, 3-5 parts of carborundum powder, white clay 5-10 parts of Guangxi, stone
5-10 parts of ink powder, 2-5 parts of binder and 23-26 parts of bonding agent.
2. fire clay according to claim 1, which is characterized in that in parts by weight, the useless corundum material of brick includes: useless rigid
10-30 parts of 10-20 parts of beautiful brick particle and useless corundum brick powder.
3. fire clay according to claim 2, which is characterized in that granularity≤0.5 millimeter of the useless corundum brick particle, institute
The granularity for stating useless corundum brick powder is 180 mesh and 320 mesh, and the granularity of the alumina powder is 1-2 microns, the grain of the homogenizing powder
Degree is 180 mesh, and the granularity of the carborundum powder is 320 mesh, and the granularity of the graphite powder is 100-200 mesh, the binder
Granularity is 180 mesh.
4. fire clay according to claim 1, which is characterized in that by mass percentage, the useless corundum material of brick at
Dividing includes: aluminium oxide >=88%, iron oxide 0-1.2% and sodium oxide molybdena 0-0.4%.
5. fire clay according to claim 1, which is characterized in that by mass percentage, the alumina powder at
Dividing includes: aluminium oxide >=99%, iron oxide 0-0.1% and sodium oxide molybdena 0-0.4%.
6. fire clay according to claim 1, which is characterized in that by mass percentage, it is described homogenizing powder at subpackage
It includes: the resultant 0-0.4% of aluminium oxide >=80%, iron oxide 0-1.8% and potassium oxide and sodium oxide molybdena.
7. fire clay according to claim 1, which is characterized in that the mass fraction of silicon carbide in the carborundum powder >=
95%, mass fraction >=95% of carbon in the graphite powder.
8. fire clay according to claim 1, which is characterized in that the binder is in dextrin, cellulose and starch
The combination of any one or two kinds.
9. fire clay according to claim 1, which is characterized in that the bonding agent is water.
10. the preparation method of fire clay described in a kind of any one of claim 1-9, which is characterized in that including following step
It is rapid:
By the useless corundum material of brick, the alumina powder, the homogenizing powder, the carborundum powder, the Guangxi white clay and
The graphite powder is uniformly mixed to obtain premix；
The binder is added in the bonding agent and is uniformly mixed to obtain pre-mixing agent；
The pre-mixing agent is added in the premix and is mixed evenly.
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| CN110423103A (en) * | 2019-08-12 | 2019-11-08 | 瑞泰马钢新材料科技有限公司 | A kind of middle water containing opening environmentally friendly chamotte and preparation method thereof |
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| CN112974790A (en) * | 2021-02-03 | 2021-06-18 | 鞍山市和丰耐火材料有限公司 | Production process for preventing iron shell of tundish nozzle from falling off |
| CN115403359A (en) * | 2022-08-24 | 2022-11-29 | 马鞍山盛平新材料科技有限公司 | Refractory mortar and preparation method thereof |
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| CN112974790A (en) * | 2021-02-03 | 2021-06-18 | 鞍山市和丰耐火材料有限公司 | Production process for preventing iron shell of tundish nozzle from falling off |
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| CN109437939B (en) | 2021-10-15 |
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