CN114163222A - Titanium composite corundum silicon carbide wear-resistant castable for cement kiln mouths and preparation method thereof - Google Patents
Titanium composite corundum silicon carbide wear-resistant castable for cement kiln mouths and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a titanium composite corundum silicon carbide wear-resistant castable for a cement kiln mouth and a preparation method thereof. The titanium composite corundum silicon carbide wear-resistant castable mainly comprises, by mass, 15-20% of fused white corundum with the thickness of 5-3 mm, 15-25% of fused white corundum with the thickness of 3-1 mm, 15-25% of fused white corundum with the thickness of 1-0 mm, 2-8% of 97 silicon carbide with the thickness of 3-1 mm, 5-10% of 97 silicon carbide with the thickness of 1-0 mm, 2-8% of 97 silicon carbide with the size of 200 meshes, 5-15% of titanium reinforced corundum refractory material with the thickness of 1-0 mm, 10-20% of titanium reinforced corundum refractory material with the size of 200 meshes, 5-10% of active alumina powder and 5-8% of aluminate cement. The product prepared by the invention has excellent wear resistance, is suitable for the kiln opening part of the cement kiln, can effectively increase the safe operation period of the cement rotary kiln, and realizes the yield increase and consumption reduction of cement enterprises.
Description
The technical field is as follows:
the invention belongs to the technical field of refractory materials, and particularly relates to a titanium composite corundum silicon carbide wear-resistant castable for a cement kiln opening and a preparation method thereof.
Secondly, background art:
the kiln mouth of the cement kiln is a key part in a novel dry cement sintering system, the working condition of the kiln mouth is harsh, high-temperature clinker reaches the kiln mouth under the action of a high-speed rotating cylinder, and primary air and secondary air with high wind speed carry a large amount of sand dust to seriously scour and wear a refractory material of a lining of the kiln mouth. In addition, the kiln mouth part can cause the refractory material of the kiln mouth lining to generate thermal shock damage under the action of high-temperature primary air, secondary air and cold air. And the replacement of the refractory material of the kiln mouth lining needs to be carried out after the kiln is stopped and cooled. Therefore, the performance of the refractory lining of the kiln mouth directly influences the operation period of the firing system equipment and the yield of cement clinker.
The corundum-silicon carbide castable has excellent volume stability, erosion resistance, high temperature resistance and other properties, and is used as an excellent lining refractory material to be applied to the kiln mouth of a cement kiln. In order to improve the sintering properties and other application properties of the casting material, small amounts of additives are usually added to the casting material. Proper amount of TiO is introduced into the corundum castable2The additive can promote the sintering of corundum castable and generate aluminum titanate at high temperature, and reduce the content of aluminum titanateThe thermal expansion coefficient of the material inhibits the rapid growth of corundum crystals, and further improves the thermal shock resistance of the material.
Thirdly, the invention content:
the technical problem to be solved by the invention is as follows: the invention provides a titanium composite corundum silicon carbide wear-resistant castable for a cement kiln opening and a preparation method thereof, aiming at overcoming the technical problems of the existing refractory material used for the cement kiln opening. The titanium composite corundum adopted in the technical scheme of the invention is a novel titanium composite corundum raw material which is a ferrotitanium slag byproduct generated in the ferrotitanium alloy smelting process and is re-synthesized through process optimization, can be used as a substitute of partial white corundum, and is higher than the white corundum and TiO by different particle sizes and dosage ratios2The strength, wear resistance and other properties of the casting material; thereby greatly saving the cost of raw materials, improving the profit of the traditional refractory products and obtaining better using effect.
In order to solve the problems, the invention adopts the technical scheme that:
the invention provides a titanium composite corundum silicon carbide wear-resistant castable for a cement kiln mouth, which is prepared from the following raw materials, by mass, 15-20% of fused white corundum with the thickness of 5-3 mm, 15-25% of fused white corundum with the thickness of 3-1 mm, 15-25% of fused white corundum with the thickness of 1-0 mm, 2-8% of 97 silicon carbide with the thickness of 3-1 mm, 5-10% of 97 silicon carbide with the thickness of 1-0 mm, 2-8% of 97 silicon carbide with the thickness of 200 meshes, 5-15% of titanium reinforced corundum refractory material with the thickness of 1-0 mm, 10-20% of titanium reinforced corundum refractory material with the thickness of 200 meshes, 5-10% of activated alumina powder and 5-8% of aluminate cement.
According to the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening, the main component and the mass percentage of the main component in the electric melting white corundum are Al2O3≥98％、Fe2O3≤0.2％、K2O is less than or equal to 0.1 percent and Na2O≤0.5％。
According to the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening, the mass percentage of SiC in 97 silicon carbide is more than or equal to 97%, and Fe2O3Mass ofThe percentage content is less than or equal to 1.0 percent.
According to the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening, Al in the titanium reinforced corundum refractory material2O380.76 percent of SiO21.54 percent by mass of Fe2O3The mass percentage of TiO is less than or equal to 2.0 percent2The mass percentage of the components is 16.73 percent and K2The mass percentage of O is less than or equal to 0.1 percent and Na2The mass percentage of O is less than or equal to 0.1 percent.
The titanium reinforced corundum refractory material adopted by the invention is prepared by the technical scheme disclosed by CN 202010567012.8.
According to the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening, Al in the active alumina powder2O3The mass percentage content of the Fe alloy is more than or equal to 98 percent, and the Fe alloy is Fe2O3The mass percentage content of the sodium-containing material is less than or equal to 0.1 percent, and Na2The mass percentage of O is less than or equal to 0.5 percent.
According to the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening, the particle size of the active alumina powder is 325 meshes.
In addition, the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln comprises the following steps:
a. firstly, weighing various raw materials according to the proportion of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln;
b. mixing the weighed raw materials with a water reducing agent sodium tripolyphosphate and a retarder sodium fluosilicate, uniformly mixing, pouring into a stirring pot, adding water, and uniformly stirring to obtain a mixed material;
the adding amount of the water reducing agent sodium tripolyphosphate is 0.2% of the total weight of the raw materials, the adding amount of the retarder sodium fluosilicate is 0.005% of the total weight of the raw materials, and the adding amount of the water is 3-5% of the total weight of the raw materials;
c. c, vibration molding the mixed material obtained in the step b;
d. curing the formed product at 20-25 ℃ for 24-48 h;
e. and drying the product obtained after curing to obtain the titanium composite corundum silicon carbide wear-resistant castable for the kiln outlet of the cement kiln.
According to the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln, in the step e, drying is carried out in an oven, the drying temperature is 100-120 ℃, and the drying time is 12-24 hours.
The invention has the following positive beneficial effects:
1. the titanium composite corundum silicon carbide wear-resistant castable prepared by the technical scheme of the invention has excellent wear resistance, is suitable for the kiln opening part of a cement kiln, can effectively prolong the safe operation period of the cement rotary kiln, and realizes the yield increase and consumption reduction of cement enterprises. Therefore, the invention has remarkable economic benefit and social benefit.
2. In the technical scheme of the invention, the introduction of the titanium reinforced corundum refractory material promotes the sintering of the material, and the compressive strength and the rupture strength of the material after medium-low temperature calcination are obviously improved. Reduce the effect of adding TiO2The introduction of the titanium alloy enhances the high-temperature wear resistance of the material due to overburning and volume shrinkage of the material during high-temperature calcination.
3. The titanium composite corundum silicon carbide wear-resistant castable prepared by the technical scheme of the invention has the apparent volume density of more than or equal to 2.95g/cm3The compression strength is 110-150 MPa, and the breaking strength is 12-17 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is less than or equal to 3cm3。
Fourthly, the specific implementation mode:
the invention is further illustrated by the following examples, which do not limit the scope of the invention.
The electro-fused white corundum adopted in the following examples comprises the main component and the mass percentage of Al2O3≥98％、Fe2O3≤0.2％、K2O is less than or equal to 0.1 percent and Na2O is less than or equal to 0.5 percent; 97 percent of SiC and Fe2O3The mass percentage content of the compound is less than or equal to 1.0 percent; titanium reinforced corundum seriesAl in refractory2O380.76 percent of SiO21.54 percent by mass of Fe2O3The mass percentage of TiO is less than or equal to 2.0 percent2The mass percentage of the components is 16.73 percent and K2The mass percentage of O is less than or equal to 0.1 percent and Na2The mass percentage of O is less than or equal to 0.1 percent (the titanium reinforced corundum refractory material is prepared by the technical scheme disclosed by CN 202010567012.8); al in the active alumina powder2O3The mass percentage content of the Fe alloy is more than or equal to 98 percent, and the Fe alloy is Fe2O3The mass percentage content of the sodium-containing material is less than or equal to 0.1 percent, and Na2The mass percentage of O is less than or equal to 0.5 percent, and the particle size of the active alumina powder is 325 meshes.
Example 1:
the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln mouth comprises, by mass, 5-3 mm of fused white corundum, 3-1 mm of fused white corundum, 25% of 1-0 mm of fused white corundum, 3-1 mm of 97 silicon carbide, 8% of 1-0 mm of 97 silicon carbide, 10% of 1-0 mm of 97 silicon carbide, 2% of 200-mesh 97 silicon carbide, 5% of 1-0 mm of titanium reinforced corundum refractory, 10% of 200-mesh titanium reinforced corundum refractory, 5% of activated alumina powder and 5% of aluminate cement.
Example 2:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 1 of the invention comprises the following detailed steps:
a. firstly, weighing various raw materials according to the proportion of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln in the embodiment 1;
b. mixing the weighed raw materials, the water reducing agent sodium tripolyphosphate and the retarder sodium fluosilicate, pouring the mixture into a stirring pot after uniformly mixing, and then adding water and uniformly stirring to obtain a mixed material;
the adding amount of the water reducing agent sodium tripolyphosphate is 0.2 percent of the total weight of the raw materials, the adding amount of the retarder sodium fluosilicate is 0.005 percent of the total weight of the raw materials, and the adding amount of the water is 5 percent of the total weight of the raw materials;
c. c, vibration molding the mixed material obtained in the step b;
d. curing the formed product at 20-25 ℃ for 36 h;
e. and drying the product obtained after curing (the drying temperature is 100-120 ℃, and the drying time is 24h), and obtaining the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 115MPa, the breaking strength is 13MPa, and the high-temperature abrasion loss at the test temperature of 1200 ℃ is 2.36cm3。
Example 3:
the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln mouth comprises, by mass, 17% to 3mm of fused white corundum, 16% to 1mm of fused white corundum, 5% to 1mm of 97 silicon carbide, 8% to 0mm of 97 silicon carbide, 5% to 200-mesh 97 silicon carbide, 8% to 0mm of titanium-reinforced corundum refractory, 12% to 200-mesh titanium-reinforced corundum refractory, 6% of activated alumina powder and 7% of aluminate cement.
Example 4:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 3 of the invention is the same as the embodiment 2.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 140MPa, and the breaking strength is 13 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 1.96cm3。
Example 5:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 20% of fused white corundum with the thickness of 5-3 mm, 15% of fused white corundum with the thickness of 3-1 mm, 25% of fused white corundum with the thickness of 1-0 mm, 2% of 97 silicon carbide with the thickness of 3-1 mm, 5% of 97 silicon carbide with the thickness of 1-0 mm, 8% of 97 silicon carbide with the size of 200 meshes, 5% of titanium reinforced corundum refractory material with the thickness of 1-0 mm, 10% of titanium reinforced corundum refractory material with the size of 200 meshes, 5% of activated alumina powder and 5% of aluminate cement.
Example 6:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 5 of the invention comprises the following detailed steps:
a. firstly, weighing various raw materials according to the proportion of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln in the embodiment 5;
b. mixing the weighed raw materials, the water reducing agent sodium tripolyphosphate and the retarder sodium fluosilicate, pouring the mixture into a stirring pot after uniformly mixing, and then adding water and uniformly stirring to obtain a mixed material;
the adding amount of the water reducing agent sodium tripolyphosphate is 0.2 percent of the total weight of the raw materials, the adding amount of the retarder sodium fluosilicate is 0.005 percent of the total weight of the raw materials, and the adding amount of the water is 4 percent of the total weight of the raw materials;
c. c, vibration molding the mixed material obtained in the step b;
d. curing the formed product at 20-25 ℃ for 28 h;
e. and drying the product obtained after curing (the drying temperature is 100-120 ℃, and the drying time is 20h), and obtaining the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 124MPa, and the breaking strength is 15 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 2.09cm3。
Example 7:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 5-3 mm of fused white corundum, 3-1 mm of fused white corundum, 20% of 1-0 mm of fused white corundum, 3-1 mm of 97 silicon carbide, 2% of 1-0 mm of 97 silicon carbide, 5% of 200-mesh 97 silicon carbide, 15% of 1-0 mm of titanium reinforced corundum refractory, 10% of 200-mesh titanium reinforced corundum refractory, 5% of activated alumina powder and 5% of aluminate cement.
Example 8:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 7 of the invention is the same as the embodiment 2.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 105MPa, the breaking strength is 12MPa, and the high-temperature abrasion loss at the test temperature of 1200 ℃ is 2.28cm3。
Example 9:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 5-3 mm of fused white corundum, 3-1 mm of fused white corundum, 20-0 mm of fused white corundum, 3-1 mm of 97 silicon carbide, 1-0 mm of 97 silicon carbide, 5% of 1-0 mm of 97 silicon carbide, 2% of 200-mesh 97 silicon carbide, 5% of 1-0 mm of titanium reinforced corundum refractory, 20% of 200-mesh titanium reinforced corundum refractory, 5% of activated alumina powder and 5% of aluminate cement.
Example 10:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 9 of the invention is the same as the embodiment 2.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compression strength is 147MPa, and the breaking strength is 16 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 1.98cm3。
Example 11:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 5-3 mm of fused white corundum, 3-1 mm of fused white corundum, 20% of 1-0 mm of fused white corundum, 3-1 mm of 97 silicon carbide, 1-0 mm of 97 silicon carbide, 5% of 200-mesh 97 silicon carbide, 2% of 1-0 mm of titanium-reinforced corundum refractory, 15% of 200-mesh titanium-reinforced corundum refractory, 10% of activated alumina powder and 8% of aluminate cement.
Example 12:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 11 of the invention is the same as the embodiment 6.
Preparation of the resulting productThe apparent volume density of the glass is more than or equal to 2.95g/cm3The compressive strength is 110MPa, and the breaking strength is 12 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 2.97cm3。
Example 13:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 20% of fused white corundum with the thickness of 5-3 mm, 20% of fused white corundum with the thickness of 3-1 mm, 15% of fused white corundum with the thickness of 1-0 mm, 5% of 97 silicon carbide with the thickness of 3-1 mm, 5% of 97 silicon carbide with the thickness of 1-0 mm, 5% of 97 silicon carbide with the size of 200 meshes, 5% of titanium reinforced corundum refractory material with the thickness of 1-0 mm, 10% of titanium reinforced corundum refractory material with the size of 200 meshes, 8% of activated alumina powder and 7% of aluminate cement.
Example 14:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 13 of the invention is the same as the embodiment 6.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 135MPa, and the breaking strength is 15 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is less than or equal to 2.19m3。
Example 15:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 5-3 mm of fused white corundum, 25-1 mm of fused white corundum, 15-0 mm of fused white corundum, 5-1 mm of 97 silicon carbide, 10-0 mm of 97 silicon carbide, 5% of 200-mesh 97 silicon carbide, 5% of 1-0 mm of titanium-reinforced corundum refractory, 10% of 200-mesh titanium-reinforced corundum refractory, 5% of activated alumina powder and 5% of aluminate cement.
Example 16:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 15 of the invention is the same as the embodiment 6.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 121MPa, and the breaking strength is 13 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 2.31cm3。
Example 17:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, raw materials of, by weight, 18% of fused white corundum with the thickness of 5-3 mm, 20% of fused white corundum with the thickness of 3-1 mm, 18% of fused white corundum with the thickness of 1-0 mm, 4% of 97 silicon carbide with the thickness of 3-1 mm, 9% of 97 silicon carbide with the thickness of 1-0 mm, 4% of 97 silicon carbide with the size of 200 meshes, 7% of titanium reinforced corundum refractory with the thickness of 1-0 mm, 10% of titanium reinforced corundum refractory with the size of 200 meshes, 5% of activated alumina powder and 5% of aluminate cement.
Example 18:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening in the embodiment 17 of the invention is the same as the embodiment 6.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compression strength is 127MPa, and the breaking strength is 15 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 2.17cm3。
Example 19:
the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln comprises, by mass, 17% of fused white corundum with the thickness of 5-3 mm, 20% of fused white corundum with the thickness of 3-1 mm, 20% of fused white corundum with the thickness of 1-0 mm, 5% of 97 silicon carbide with the thickness of 3-1 mm, 5% of 97 silicon carbide with the thickness of 1-0 mm, 5% of 97 silicon carbide with the size of 200 meshes, 5% of titanium reinforced corundum refractory with the thickness of 1-0 mm, 10% of titanium reinforced corundum refractory with the size of 200 meshes, 8% of activated alumina powder and 5% of aluminate cement.
Example 20:
the preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening, provided by the embodiment 19 of the invention, comprises the following detailed steps:
a. firstly, weighing various raw materials according to the proportion of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln in the embodiment 19;
b. mixing the weighed raw materials, the water reducing agent sodium tripolyphosphate and the retarder sodium fluosilicate, pouring the mixture into a stirring pot after uniformly mixing, and then adding water and uniformly stirring to obtain a mixed material;
the adding amount of the water reducing agent sodium tripolyphosphate is 0.2 percent of the total weight of the raw materials, the adding amount of the retarder sodium fluosilicate is 0.005 percent of the total weight of the raw materials, and the adding amount of the water is 4 percent of the total weight of the raw materials;
c. c, vibration molding the mixed material obtained in the step b;
d. curing the formed product at 20-25 ℃ for 48 h;
e. and drying the product obtained after curing (the drying temperature is 100-120 ℃, and the drying time is 16h), and obtaining the titanium composite corundum silicon carbide wear-resistant castable for the kiln mouth of the cement kiln.
The apparent volume density of the prepared product is more than or equal to 2.95g/cm3The compressive strength is 150MPa, and the flexural strength is 17 MPa; the high-temperature abrasion loss at the test temperature of 1200 ℃ is 1.81cm3。
Claims (8)
1. The titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening is characterized by comprising the following components in parts by weight: the titanium composite corundum silicon carbide wear-resistant castable mainly comprises, by mass, 15-20% of fused white corundum with the thickness of 5-3 mm, 15-25% of fused white corundum with the thickness of 3-1 mm, 15-25% of fused white corundum with the thickness of 1-0 mm, 2-8% of 97 silicon carbide with the thickness of 3-1 mm, 5-10% of 97 silicon carbide with the thickness of 1-0 mm, 2-8% of 97 silicon carbide with the size of 200 meshes, 5-15% of titanium reinforced corundum refractory material with the thickness of 1-0 mm, 10-20% of titanium reinforced corundum refractory material with the size of 200 meshes, 5-10% of active alumina powder and 5-8% of aluminate cement.
2. The titanium composite corundum silicon carbide wear-resistant castable for the cement kiln mouth as claimed in claim 1, characterized in that: the main component and the mass percentage content of the electro-fused white corundum are Al2O3≥98％、Fe2O3≤0.2％、K2O is less than or equal to 0.1 percent and Na2O≤0.5％。
3. The titanium composite corundum silicon carbide wear-resistant material for the cement kiln mouth as claimed in claim 1The castable is characterized in that: the mass percentage of SiC in the 97 silicon carbide is more than or equal to 97 percent, and the Fe content2O3The mass percentage content of the component (A) is less than or equal to 1.0 percent.
4. The titanium composite corundum silicon carbide wear-resistant castable for the cement kiln mouth as claimed in claim 1, characterized in that: al in the titanium reinforced corundum refractory material2O380.76 percent of SiO21.54 percent by mass of Fe2O3The mass percentage of TiO is less than or equal to 2.0 percent2The mass percentage of the components is 16.73 percent and K2The mass percentage of O is less than or equal to 0.1 percent and Na2The mass percentage of O is less than or equal to 0.1 percent.
5. The titanium composite corundum silicon carbide wear-resistant castable for the cement kiln mouth as claimed in claim 1, characterized in that: al in the active alumina powder2O3The mass percentage content of the Fe alloy is more than or equal to 98 percent, and the Fe alloy is Fe2O3The mass percentage content of the sodium-containing material is less than or equal to 0.1 percent, and Na2The mass percentage of O is less than or equal to 0.5 percent.
6. The titanium composite corundum silicon carbide wear-resistant castable for the cement kiln mouth as claimed in claim 1, characterized in that: the particle size of the activated alumina powder is 325 meshes.
7. The preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln is characterized by comprising the following steps:
a. firstly, weighing various raw materials according to the proportion of the titanium composite corundum silicon carbide wear-resistant castable for the kiln opening of the cement kiln according to claim 1;
b. mixing the weighed raw materials with a water reducing agent sodium tripolyphosphate and a retarder sodium fluosilicate, uniformly mixing, pouring into a stirring pot, adding water, and uniformly stirring to obtain a mixed material;
the adding amount of the water reducing agent sodium tripolyphosphate is 0.2% of the total weight of the raw materials, the adding amount of the retarder sodium fluosilicate is 0.005% of the total weight of the raw materials, and the adding amount of the water is 3-5% of the total weight of the raw materials;
c. c, vibration molding the mixed material obtained in the step b;
d. curing the formed product at 20-25 ℃ for 24-48 h;
e. and drying the product obtained after curing to obtain the titanium composite corundum silicon carbide wear-resistant castable for the kiln outlet of the cement kiln.
8. The preparation method of the titanium composite corundum silicon carbide wear-resistant castable for the cement kiln opening according to claim 7, characterized by comprising the following steps: and e, drying in an oven at 100-120 ℃ for 12-24 hours.
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| CN202111456639.7A CN114163222B (en) | 2021-12-01 | 2021-12-01 | Titanium composite corundum silicon carbide wear-resistant castable for cement kiln mouths and preparation method thereof |
| PCT/CN2022/134102 WO2023098567A1 (en) | 2021-12-01 | 2022-11-24 | Titanium composite corundum silicon carbide wear-resistant castable material for kiln outlet of cement kiln, and preparation method therefor |
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| CN202111456639.7A CN114163222B (en) | 2021-12-01 | 2021-12-01 | Titanium composite corundum silicon carbide wear-resistant castable for cement kiln mouths and preparation method thereof |
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| CN115819075A (en) * | 2022-12-10 | 2023-03-21 | 巩义通达中原耐火技术有限公司 | Low-temperature sintered titanium-rich corundum composite silicon carbide brick and preparation method thereof |
| WO2023098567A1 (en) * | 2021-12-01 | 2023-06-08 | 北京金隅通达耐火技术有限公司 | Titanium composite corundum silicon carbide wear-resistant castable material for kiln outlet of cement kiln, and preparation method therefor |
| CN116462493A (en) * | 2023-03-31 | 2023-07-21 | 巩义通达中原耐火技术有限公司 | Titanium-rich corundum composite silicon carbide unburned brick and preparation method thereof |
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| CN116874289A (en) * | 2023-07-25 | 2023-10-13 | 江西博丰耐火材料有限公司 | Preparation method of novel high-temperature-resistant high-strength aluminum-magnesium castable |
| CN117534449B (en) * | 2024-01-10 | 2024-03-26 | 洛阳铂信耐火材料有限公司 | Corundum castable for copper chute and preparation method thereof |
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