CN106810282B - Method for producing ramming mass by using waste fused zirconia corundum bricks - Google Patents
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Abstract
The invention relates to a method for producing a ramming mass by using fused zirconia corundum waste bricks, belonging to the technical field of refractory materials. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks comprises the steps of selecting, quenching, crushing and screening the fused zirconia-corundum waste bricks in a glass kiln to obtain fused zirconia-corundum aggregate, and uniformly mixing the fused zirconia-corundum aggregate, zircon powder, a binding agent and an additive to obtain the ramming mass. The method realizes the recycling of the fused zirconia-corundum waste bricks of the glass kiln, and the prepared ramming mass has excellent chemical stability, thermal stability and compressive strength by adding a proper amount of bonding agent and additive, has stable product performance, and can be used for the sealing layer at the bottom of the glass kiln pool.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a method for producing a ramming mass by using fused zirconia corundum waste bricks.
Background
The fused zirconia corundum is a high-grade refractory material prepared by smelting alumina and zirconia as raw materials in an electric arc furnace at high temperature. The zircon corundum is used as a high-grade refractory raw material and is a main refractory material for manufacturing glass melting furnaces. The fused zirconia corundum bricks have small stone tendency, and are usually only used for manufacturing key parts of a high-quality glass kiln due to the high price of the zirconia corundum, for example, a clay brick at the bottom of the glass kiln is usually paved with a fused zirconia corundum ramming material, a melting part is paved with the fused zirconia corundum bricks, the pool wall of the melting part is usually built by using a whole block of oxidation method fused zirconia corundum bricks, and a breast wall of a melting area is made of non-shrinkage-cavity fused zirconia corundum bricks. After the glass kiln is overhauled or discarded, the disassembled zirconia-corundum bricks are generally piled up as common construction waste or used as construction recycled materials, and the zirconium resource in the zirconia-corundum bricks cannot be effectively recycled. As is known, zirconium-containing minerals with industrial value in nature mainly comprise zirconite and baddeleyite, the storage capacity of zircon sand in the world is about 4000 million tons, 85 percent of the zircon sand is distributed in Australia, south Africa, America, India and the like, the yield of zirconite in China can only meet the requirement of 1/4 in China approximately, most of the requirement depends on import, and if the fused zirconia-corundum bricks disassembled when a glass kiln is overhauled or discarded can be recycled, the situation of shortage of zirconium mineral resources in China can be relieved, and the source of zirconium raw materials can be expanded.
CN101786890A discloses a method for producing an electro-fused zirconia-corundum ramming mass by using waste bricks of a glass kiln, which is characterized in that aggregates obtained by sorting, crushing, screening, smelting, secondary crushing and screening the disassembled waste bricks, high alumina cement, zircon powder and white mud are added into a mixer to be fully mixed to obtain a finished product of the electro-fused zirconia-corundum ramming mass.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a method for producing a ramming mass by using waste fused zirconia corundum bricks.
In order to solve the technical problems and achieve the purpose of the invention, the invention adopts the following technical scheme:
the invention discloses a method for producing a ramming mass by using fused zirconia-corundum waste bricks, which comprises the steps of selecting, quenching, crushing and screening the fused zirconia-corundum waste bricks in a glass kiln to obtain fused zirconia-corundum aggregate, and uniformly mixing the fused zirconia-corundum aggregate, zircon powder, a binding agent and an additive to obtain the ramming mass.
Wherein the binder is phosphoric acid or phosphate, at least one of orthophosphoric acid, pyrophosphoric acid or metaphosphoric acid can be selected as phosphoric acid, and at least one of aluminum monohydrogen phosphate, aluminum dihydrogen phosphate, zirconium monohydrogen phosphate or zirconium dihydrogen phosphate can be selected as phosphate; orthophosphoric acid, aluminum dihydrogen phosphate, or a mixture of the two is preferred.
The additive is an organic acid, specifically the additive is a mixture of a hydroxycarboxylic acid and an aminocarboxylic acid, the hydroxycarboxylic acid is at least one selected from citric acid, glycolic acid, tartaric acid, malic acid, 2-hydroxypropionic acid and 2, 3-dihydroxysuccinic acid, and the aminocarboxylic acid is at least one selected from iminodiacetic acid, DL-2-aminosuccinic acid and 2-amino-3-methylsuccinic acid. Preferably, the mass ratio of the hydroxycarboxylic acid to the aminocarboxylic acid is 1: 10-10: 1, more preferably, the mass ratio of hydroxycarboxylic acid to aminocarboxylic acid is 1: 5-5: 1.
wherein the content of the first and second substances,the fused zirconia corundum aggregate contains 30-50 wt% of ZrO240 to 55 wt% of Al2O310 to 17 wt% of SiO2And is Fe2O3≤1.0wt％。
Wherein the zircon powder contains 60.5-66.8 wt% of ZrO232.0 to 33.2 wt% of SiO2And is Fe2O3≤0.5wt％。
The fused zirconia corundum aggregate is 100 parts by weight, the zircon powder is 20-35 parts by weight, the bonding agent is 6.5-10.0 parts by weight, and the additive is 1.2-2.5 parts by weight.
Wherein the fused zirconia corundum aggregate has a particle size of 3.0mm or less, and 20 to 30 parts by weight of the fused zirconia corundum aggregate having a particle size of 1.0mm or less, based on 100 parts by weight.
Compared with the closest prior art, the method for producing the ramming mass by utilizing the fused zirconia corundum waste bricks has the following beneficial effects:
the method realizes the recycling of the fused zirconia-corundum waste bricks of the glass kiln, and the prepared ramming mass has excellent chemical stability, thermal stability and compressive strength by adding a proper amount of bonding agent and additive, has stable product performance, and can be used for the sealing layer at the bottom of the glass kiln pool.
Detailed Description
The method for producing ramming mass by using waste fused zirconia-corundum bricks according to the present invention will be further described with reference to the following specific examples, so as to more fully and clearly illustrate the technical solution of the present invention.
The invention aims to realize the recycling of the waste fused zirconia-corundum bricks and provide a high-quality zirconia-corundum ramming mass. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks comprises the steps of selecting, quenching, crushing and screening the fused zirconia-corundum waste bricks in a glass kiln to obtain fused zirconia-corundum aggregate, uniformly mixing the fused zirconia-corundum aggregate, zircon powder, a binding agent and an additive, packaging into a finished product, and manually ramming or pneumatically ramming when the finished product is used to obtain the ramming mass. More particularly, the invention① removing impurities such as vitreous matters attached to the waste fused zirconia corundum bricks detached from a waste glass kiln or a glass kiln for overhauling and detaching, then cracking the waste fused zirconia corundum bricks by a quenching method, then crushing, grinding and screening to obtain recycled aggregates with different grades of granularity, wherein the recycled aggregates are different according to the components of fused zirconia corundum products, for example, 30-50 wt% of ZrO is usually contained in the recycled aggregates after grinding fused zirconia corundum bricks such as AZS-33, AZS-36 and AZS-41240 to 50 wt% of Al2O310 to 17 wt% of SiO2And is Fe2O3② the reclaimed aggregate is compounded, mixed uniformly with zircon powder, a binding agent and an additive, and then the mixture is beaten manually or by a pneumatic hammer to obtain the ramming material, wherein the binding agent is phosphoric acid or phosphate, the phosphoric acid is selected from orthophosphoric acid, pyrophosphoric acid or metaphosphoric acid, the phosphate is selected from aluminum monohydrogen phosphate, aluminum dihydrogen phosphate, zirconium monohydrogen phosphate or zirconium dihydrogen phosphate, preferably orthophosphoric acid, aluminum dihydrogen phosphate or a mixture of the two, the additive is an organic acid, the organic acid is a mixture of hydroxycarboxylic acid and aminocarboxylic acid, the hydroxycarboxylic acid is selected from citric acid, glycolic acid, tartaric acid, malic acid, 2-hydroxypropionic acid and 2, 3-dihydroxybutanedioic acid, the aminocarboxylic acid is selected from iminodiacetic acid, DL-2-aminosuccinic acid, 2-amino-3-methylsuccinic acid, the mass ratio of the hydroxycarboxylic acid and the aminocarboxylic acid is 1: 10: 1 to 10: 1, the hydroxycarboxylic acid and the additive is selected from zirconium powder, the additive and the additive is selected from the additive, the recycled aggregate is a recycled aggregate, the recycled aggregate is not reduced in the recycled aggregate is blended aggregate, the recycled aggregate is blended to the232.8 wt% SiO2，0.5 wt% Fe2O3And the balance of other impurities, wherein the specification of the adopted zircon powder is 350 meshes.
Example 1
① removing impurities such as vitreous matters and the like attached to AZS-33 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② the ramming material is obtained by uniformly mixing 30 parts by weight of fused zirconia corundum aggregate with the particle size of less than 1.0mm, 70 parts by weight of fused zirconia corundum aggregate with the particle size of 3.0-1.0mm, 20 parts by weight of zircon powder, 8.0 parts by weight of phosphoric acid (85%), 1.0 part by weight of citric acid and 0.2 part by weight of iminodiacetic acid, and then performing manual ramming or pneumatic hammer ramming.
Example 2
① removing impurities such as vitreous matters and the like attached to AZS-33 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② mixing 20 weight parts of fused zirconia corundum aggregate with a particle size of less than 1.0mm, 80 weight parts of fused zirconia corundum aggregate with a particle size of 3.0-1.0mm, 30 weight parts of zircon powder, 7.0 weight parts of aluminum dihydrogen phosphate (60%), 1.0 weight parts of tartaric acid and 0.2 weight parts of iminodiacetic acid uniformly, and then carrying out pedestrian walkingAnd (4) obtaining the ramming material by ramming with a worker or a pneumatic hammer. The amount of water added during the ramming material construction of this example is recommended to be 6 wt% of the ramming material.
Example 3
① removing impurities such as vitreous matters and the like attached to AZS-33 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② the ramming material is obtained by uniformly mixing 30 parts by weight of fused zirconia corundum aggregate with a particle size of 1.0mm or less, 70 parts by weight of fused zirconia corundum aggregate with a particle size of 3.0-1.0mm, 20 parts by weight of zircon powder, 8.0 parts by weight of phosphoric acid (85%), 1.0 part by weight of tartaric acid and 0.5 part by weight of iminodiacetic acid, and then performing manual ramming or pneumatic hammer ramming.
Example 4
① removing impurities such as vitreous matters and the like attached to AZS-33 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② mixing 20 weight parts of fused zirconia corundum aggregate with a particle size of less than 1.0mm, 80 weight parts of fused zirconia corundum aggregate with a particle size of 3.0-1.0mm, 30 weight parts of zircon powder, 7.0 weight parts of aluminum dihydrogen phosphate (60%), 1.0 weight parts of malic acid and 0.2 weight parts of iminodiacetic acidAnd uniformly tamping by a manual tamping or pneumatic hammer to obtain the ramming material. The amount of water added during the ramming material construction of this example is recommended to be 6 wt% of the ramming material.
Example 5
① removing impurities such as vitreous matters and the like attached to AZS-36 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② the ramming material is obtained by uniformly mixing 20 parts by weight of fused zirconia corundum aggregate with the particle size of less than 1.0mm, 80 parts by weight of fused zirconia corundum aggregate with the particle size of 3.0-1.0mm, 30 parts by weight of zircon powder, 8.8 parts by weight of phosphoric acid (85%), 1.5 parts by weight of citric acid and 0.5 part by weight of DL-2-aminosuccinic acid and then performing manual ramming or pneumatic hammer ramming.
Example 6
① removing impurities such as vitreous matters and the like attached to AZS-36 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② is prepared from fused zirconia corundum aggregate (less than 1.0mm in grain size) 30 weight parts, fused zirconia corundum aggregate (3.0-1.0 mm in grain size) 70 weight parts, zircon powder 20 weight parts, aluminium dihydrogen phosphate (60%) 8.0 weight parts, tartaric acid 1.5 weight parts, and D0.5 weight partsAnd uniformly mixing the L-2-amino succinic acid, and then manually ramming or ramming with a pneumatic hammer to obtain the ramming material. The amount of water added during the ramming material construction of this example is recommended to be 6 wt% of the ramming material.
Example 7
① removing impurities such as vitreous matters and the like attached to AZS-36 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② the ramming material is obtained by uniformly mixing 20 parts by weight of fused zirconia corundum aggregate with a particle size of 1.0mm or less, 80 parts by weight of fused zirconia corundum aggregate with a particle size of 3.0-1.0mm, 30 parts by weight of zircon powder, 8.8 parts by weight of phosphoric acid (85%), 1.5 parts by weight of tartaric acid and 0.5 part by weight of DL-2-aminosuccinic acid, and then performing manual ramming or pneumatic hammer ramming.
Example 8
① removing impurities such as vitreous matters and the like attached to AZS-36 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② electrically fused zirconia corundum aggregate with granularity below 1.0mm 30 weight portions, electrically fused zirconia corundum aggregate with granularity of 3.0-1.0mm 70 weight portions, zircon powder 20 weight portions, aluminium dihydrogen phosphate (60%) 8.0 weight portions, and apple 1.5 weight portionsAnd evenly mixing the fruit acid and 0.5 part by weight of DL-2-aminosuccinic acid, and then manually ramming or ramming with a pneumatic hammer to obtain the ramming material. The amount of water added during the ramming material construction of this example is recommended to be 6 wt% of the ramming material.
Example 9
① removing impurities such as vitreous matters and the like attached to AZS-41 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 40.2 wt% of ZrO245.7 wt% of Al2O311.8 wt% of SiO21.5 wt% of Na2② the ramming material is obtained by uniformly mixing 20 parts by weight of fused zirconia corundum aggregate with the particle size of less than 1.0mm, 80 parts by weight of fused zirconia corundum aggregate with the particle size of 3.0-1.0mm, 30 parts by weight of zircon powder, 9.8 parts by weight of phosphoric acid (85%), 2.0 parts by weight of citric acid and 0.5 part by weight of DL-2-aminosuccinic acid and then performing manual ramming or pneumatic hammer ramming.
Example 10
① removing impurities such as vitreous matters and the like attached to AZS-41 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 40.2 wt% of ZrO245.7 wt% of Al2O311.8 wt% of SiO21.5 wt% of Na2② is prepared from fused zirconia corundum aggregate (less than 1.0mm in grain size) 30 weight parts, fused zirconia corundum aggregate (3.0-1.0 mm in grain size) 70 weight parts, zircon powder 20 weight parts, aluminium dihydrogen phosphate (60%) 9.0 weight parts, and wine 2.0 weight partsEvenly mixing the tartaric acid and 0.5 part by weight of DL-2-aminosuccinic acid, and then carrying out manual ramming or pneumatic hammer ramming to obtain the ramming material. The amount of water added during the ramming material construction of this example is recommended to be 6 wt% of the ramming material.
Example 11
① removing impurities such as vitreous matters and the like attached to AZS-41 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 40.2 wt% of ZrO245.7 wt% of Al2O311.8 wt% of SiO21.5 wt% of Na2② the ramming material is obtained by uniformly mixing 20 parts by weight of fused zirconia corundum aggregate with the particle size of less than 1.0mm, 80 parts by weight of fused zirconia corundum aggregate with the particle size of 3.0-1.0mm, 30 parts by weight of zircon powder, 9.8 parts by weight of phosphoric acid (85%), 2.0 parts by weight of tartaric acid and 0.5 part by weight of DL-2-aminosuccinic acid and then performing manual ramming or pneumatic hammer ramming.
Example 12
① removing impurities such as vitreous matters and the like attached to AZS-41 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 40.2 wt% of ZrO245.7 wt% of Al2O311.8 wt% of SiO21.5 wt% of Na2② is prepared from fused zirconia corundum aggregate (less than 1.0mm in grain size) 30 weight parts, fused zirconia corundum aggregate (3.0-1.0 mm in grain size) 70 weight parts, zircon powder 20 weight parts, aluminium dihydrogen phosphate (60%) 9.0 weight parts, and aluminium dihydrogen phosphate (2.0 weight parts)Malic acid and 0.5 part by weight of DL-2-aminosuccinic acid are uniformly mixed and then manually rammed or pneumatically hammered to obtain the ramming material. The amount of water added during the ramming material construction of this example is recommended to be 6 wt% of the ramming material.
Comparative example 1
① removing impurities such as vitreous matters and the like attached to AZS-33 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then obtaining recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm through crushing, grinding and screening, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② is prepared from 30 parts by weight of fused zirconia corundum aggregate with a particle size of 1.0mm or less, 70 parts by weight of fused zirconia corundum aggregate with a particle size of 3.0-1.0mm, 20 parts by weight of zircon powder, 6.8 parts by weight of phosphoric acid (85%) and 1.5 parts by weight of tartaric acid through uniformly mixing and then manually or pneumatically hammering the mixture to obtain the ramming mass.
Comparative example 2
① removing impurities such as vitreous matters and the like attached to AZS-33 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then obtaining recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm through crushing, grinding and screening, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② is prepared from fused zirconia corundum aggregate (below 1.0mm in granularity) 20 weight parts, fused zirconia corundum aggregate (3.0-1.0 mm in granularity) 80 weight parts, zircon powder 30 weight parts, aluminium dihydrogen phosphate (60%) 8.0 weight parts, and iminodiacetic acid 1.2 weight partsAnd uniformly mixing the acid, and manually ramming or ramming with a pneumatic hammer to obtain the ramming material. The amount of water added during the construction of the ramming mass of this comparative example is recommended to be 6 wt% of the ramming mass.
Comparative example 3
① removing impurities such as vitreous matters and the like attached to AZS-36 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② the ramming material is obtained by uniformly mixing 20 parts by weight of fused zirconia corundum aggregate with the particle size of less than 1.0mm, 80 parts by weight of fused zirconia corundum aggregate with the particle size of 3.0-1.0mm, 30 parts by weight of zircon powder, 8.8 parts by weight of phosphoric acid (85%) and 1.5 parts by weight of oxalic acid, and then performing manual ramming or pneumatic hammer ramming.
Comparative example 4
① removing impurities such as vitreous matters and the like attached to AZS-36 zirconia corundum waste bricks detached from a glass kiln, then enabling the fused zirconia corundum waste bricks to generate cracks through a quenching method, then crushing, grinding and screening to obtain recycled aggregate with the granularity of 3.0-1.0mm and the granularity of below 1.0mm, wherein the recycled aggregate contains 32.1 wt% of ZrO250.0 wt% of Al2O316.9 wt% SiO20.3 wt% of Fe2O3② mixing 30 weight parts of fused zirconia corundum aggregate with a particle size of less than 1.0mm, 70 weight parts of fused zirconia corundum aggregate with a particle size of 3.0-1.0mm, 20 weight parts of zircon powder, 8.0 weight parts of aluminum dihydrogen phosphate (60%), 1.5 weight parts of oxalic acid and 0.5 weight part of DL-2-aminosuccinic acid uniformly, and mixingAnd manually ramming or pneumatically hammering by a hammer to obtain the ramming material. The amount of water added during the construction of the ramming mass of this comparative example is recommended to be 6 wt% of the ramming mass.
The properties of the ramming masses of examples 1 to 12 and comparative examples 1 to 4 are shown in tables 1 to 4.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
The ramming material of the embodiment can be used for a sealing layer at the bottom of a glass kiln pool, and is paved on a clay brick, tamped by a hammer and then baked and sintered. After two years of practical use, the sealing layers paved by the ramming materials in the examples 3-4 and 7-8 are found at the bottom of the glass kiln, and compared with the comparative examples 1-4, the replacement period of the refractory material at the bottom of the glass kiln can be prolonged by 1/4-1/3.
It is obvious to those skilled in the art that the present invention is not limited to the above embodiments, and it is within the scope of the present invention to adopt various insubstantial modifications of the method concept and technical scheme of the present invention, or to directly apply the concept and technical scheme of the present invention to other occasions without modification.
Claims (7)
1. A method for producing a ramming mass by using waste fused zirconia-corundum bricks is characterized by comprising the following steps: the ramming material is prepared by selecting, quenching, crushing and screening waste fused zirconia alumina bricks in a glass kiln to obtain fused zirconia alumina aggregate, and then uniformly mixing the fused zirconia alumina aggregate, zircon powder, a binding agent and an additive; 100 parts of fused zirconia corundum aggregate, 20-35 parts of zircon powder, 6.5-10.0 parts of binding agent and 1.2-2.5 parts of additive; the admixture is a mixture of hydroxycarboxylic acid and aminocarboxylic acid, the hydroxycarboxylic acid is selected from at least one of citric acid, glycolic acid, malic acid, 2-hydroxypropionic acid and 2, 3-dihydroxysuccinic acid, and the aminocarboxylic acid is selected from at least one of iminodiacetic acid, DL-2-aminosuccinic acid and 2-amino-3-methylsuccinic acid; the mass ratio of the hydroxycarboxylic acid to the aminocarboxylic acid is 1: 10-10: 1.
2. the method for producing the ramming mass by using the fused zirconia-corundum waste bricks according to claim 1, which is characterized by comprising the following steps of: the binder is phosphoric acid and/or phosphate.
3. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks according to claim 2, which is characterized in that: the binding agent is selected from one or more of orthophosphoric acid, pyrophosphoric acid, metaphosphoric acid, aluminum monohydrogen phosphate, aluminum dihydrogen phosphate, zirconium monohydrogen phosphate or zirconium dihydrogen phosphate.
4. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks according to claim 2, which is characterized in that: the binding agent is orthophosphoric acid and/or aluminum dihydrogen phosphate.
5. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks according to claim 1, which is characterized by comprising the following steps of: the fused zirconia corundum aggregate contains 30-50 wt% of ZrO240 to 55 wt% of Al2O310 to 17 wt% of SiO2And is Fe2O3≤1.0wt％。
6. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks according to claim 1, which is characterized by comprising the following steps of: the zircon powder contains 60.5-66.8 wt% of ZrO232.0 to 33.2 wt% of SiO2And is Fe2O3≤0.5wt％。
7. The method for producing the ramming mass by using the fused zirconia-corundum waste bricks according to claim 1, which is characterized by comprising the following steps of: the fused zirconia corundum aggregate has a particle size of 3.0mm or less, and the fused zirconia corundum aggregate has a particle size of 1.0mm or less in an amount of 20 to 30 parts by weight based on 100 parts by weight.
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| CN112125682B (en) * | 2020-08-21 | 2022-05-31 | 宁波长振铜业有限公司 | Furnace striking material for melting channel of regenerative brass power frequency induction furnace and use method |
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