CN104446572B - A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick - Google Patents
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick Download PDFInfo
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Abstract
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick, belongs to high-temperature calcination equipment technical field.Including surface glaze layer and internal brick body, it is characterized in that: described brick body uses mullite as particulate material, mullite powder, fused white corundum powder, andalusite, sillimanite, Suzhou clay are as fine powder material, and it is modified to add alpha-aluminium oxide powder, the total mass ratio of particulate material and fine powder material is 25 ~ 45:22 ~ 54.In brick body internal structure of the present invention, high-temperature stable crystalline phase is mullite (3Al2O3·2SiO2) and corundum, the high temperature glaze of the high abrasion high resistance to corrosion that the working surface coating that directly contacts with petroleum coke at brick is special, this glaze reaches about 5mm at brick body surface compact permeable formation.The brick laying structure of the present invention improves high sulfur petroleum coke in high-temperature burning process to can-type calcine furnace corrosion resistance, improves the wear resistance to tank body in high sulfur petroleum coke calcination process simultaneously.
Description
Technical field
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick, belongs to high-temperature calcination equipment technical field.
Background technology
Petroleum coke (PETroleum coke) is crude oil through distillation by after separating of oil for weight matter, and mink cell focus is again through the process of hot tearing, the product being transformed.Petroleum coke sulfur content is gradually increased in recent years, and some Behavior of High-sulfur Petroleum Coke sulfur content reaches more than 6%.Calcining petroleum coke is one of master operation of aluminium anode production, its objective is to get rid of the fugitive constituent of raw material, improves the density of raw material, mechanical strength, electric conductivity and chemical stability.In calcination process, petroleum coke all changes to organizational structure from elementary composition, significantly improves the physical and chemical performance of raw material after calcining.Petroleum coke through calcining is directly used in anode production, and the quality of calcined coke quality will directly affect the quality of anode carbon block.The SiO in the silica brick of the sulphur content in petroleum coke and high-temperature calcination stove in high-temperature burning process2At high temperature reaction generates SiS2, SiS2Distil more than 1090 DEG C.And this erosion process increases with petroleum coke sulfur content and the rising meeting sharp deterioration of calcining heat, causes the damage of pot type burner.How to reduce the sulfur content of Behavior of High-sulfur Petroleum Coke so that it is disclosure satisfy that pre-baked anode for aluminum production requirement, it has also become the bigger problem that the industry faces.The erosion that can-type calcine furnace silica brick is existed in high-temperature burning process by high sulfur petroleum coke becomes the shocking problem to be solved of the industry.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, it is provided that the high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick of a kind of resistance to sulfuration.
The technical solution adopted for the present invention to solve the technical problems is: this high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick, including surface glaze layer and internal brick body, it is characterized in that: described brick body uses mullite as particulate material, mullite powder, fused white corundum powder, andalusite, sillimanite, Suzhou clay are as fine powder material, and it is modified to add alpha-alumina, the total mass ratio of particulate material and fine powder material is 25 ~ 45:22 ~ 54.
Wherein, the parts by weight of raw materials of brick body consists of: mullite 25 ~ 45 parts, mullite powder 5 ~ 10 parts, fused white corundum 5 ~ 10 parts, andalusite 5 ~ 10 parts, sillimanite 3 ~ 8 parts, 3 ~ 8 parts of Suzhou soil, Alpha-alumina 1 ~ 8 part.
Described surface glaze layer uses high-temperature glaze, wherein, the concrete parts by weight of raw materials of high-temperature glaze consists of: Anhydrite 10 ~ 30 parts, 20 ~ 40 parts of quartz, Stalactitum 3 ~ 8 parts, 10 ~ 20 parts of ripe Talcum, 10 ~ 30 parts of Suzhou soil, aluminium oxide 1 ~ 8 part, 10 ~ 25 parts of zirconium English powder, rare earth oxide 1 ~ 5 part.
Rare earth oxide can select cerium sesquioxide and ceria.
The present invention uses and applies glaze on brick body surface to strengthen erosion-resisting characteristics.First the present invention consists of the raw material of brick body, and the internal crystalline phase of brick body controlling to have fired is the crystalline phase of corundum, mullite, strengthens the corrosion resistance of brick body itself.Secondly invention consists of the raw material of brick body, and the corundum that controls to obtain, porosity brick body within of the crystalline phase of mullite, the raw material fitting through surface glaze layer forms the high temperature glaze that the permeability obtained is strong so that high-temperature glaze can be deeply infiltrated into inside brick body.Such one be can the pore of complete airtight brick body, prevent the sulphur content in petroleum coke from entering, thoroughly block the SiO in silica brick2Etching reaction with fraction；Two is to strengthen the adhesion-tight degree between surface glaze layer and brick body, is effectively prevented glaze and departs from.
The physical and chemical index of brick body is: SiO2Mass percentage content 14.5% ~ 30%, Al2O3Mass percentage content 70% ~ 85%, remaining material mass degree 0 ~ 1%, the porosity 15.2% ~ 15.8%, cold crushing strength 81 MPa ~ 83MPa, refractoriness under load 1646 DEG C ~ 1653 DEG C, thermal expansion ratio 0.50 ~ 0.55.In the brick body that the present invention obtains, the ratio of corundum crystalline phase and mullite crystalline phase forms optimal corrosion resistance.Coordinate the porosity formed between crystalline phase just between 15.2 ~ 15.8.Optimal permeability-thickness can be formed when high-temperature glaze permeates, not only save glaze but also best isolating and protecting can be obtained.
Described high-temperature glaze chemical quality percentage ratio consists of: SiO2 50%~60%、Al2O310%~15%、CaO 4%~8%、MgO5%~12%、K2O1%~4%、Na2O1%~3%、ZrO26% ~ 15%, other compositions 1% ~ 4%.
Described surface glaze layer uses coating enameling method, and controls glazed thickness 1.5mm ~ 1.8mm.Glazed thickness during glazing is the means that the present invention controls glaze consumption, and under this glazing thickness, glaze layer depth enters brick body adequate thickness, and the surface glaze layer formed on brick body surface again can smooth even.
The calcining system of described surface glaze layer is: 10h is fired in room temperature ~ 300 DEG C
~ 15h, fires 8h ~ 12h for 300 DEG C ~ 600 DEG C, fires 10h ~ 15h for 600 DEG C ~ 1500 DEG C, fires 1h ~ 3h for 1500 DEG C.Calcining system affects the flow regime of high-temperature glaze and penetrates into performance, the reasonable calcining system that the present invention formulates, it is ensured that generate smooth surface, the devitrified glass matter structure glaze layer that compact structure and substrate are firmly combined with.
Compared with prior art, high sulfur petroleum coke high-temperature calcination stove the had the beneficial effect that present invention of corundum-mullite brick of the present invention passes through optimization of C/C composites and rational Process Route Planning, development and production go out high-quality corundum-mullite brick, and in brick body internal structure, high-temperature stable crystalline phase is mullite (3Al2O3·2SiO2) and corundum, avoid free state SiO as far as possible2(cristobalite etc.) exist.The high temperature glaze of the high abrasion high resistance to corrosion that the working surface coating that directly contacts with petroleum coke at tank body brick is special, improve the surface property of brick body further, this glaze reaches about 5mm at brick body surface compact permeable formation, avoiding the erosion to brick body surface of the volatile matters such as sulfide, while improve brick body surface abrasion performance, the most effectively prevent the volatile matters such as sulfide to brick body internal penetration, it is to avoid the infiltration erosion damage to brick body internal structure such as sulfide.Glaze layer devitrified glass matter compact structure, smooth surface, the porosity goes to zero, to avoid the adsorption and permeation effect of carbon granule and tar.There is the performance of higher chemical resistance of concrete, to avoid the pyrolysis gas effect to brick in calcining furnace.Brick laying structure improves high sulfur petroleum coke in high-temperature burning process to can-type calcine furnace corrosion resistance, improves the wear resistance to tank body in high sulfur petroleum coke calcination process simultaneously.
Detailed description of the invention
Below by specific embodiment, the present invention will be further described, and wherein embodiment 1 is most preferred embodiment.
Embodiment 1
The parts by weight of raw materials of brick body consists of mullite particle 35, mullite powder 8 parts, fused white corundum 8 parts, andalusite 8 parts, sillimanite 5.5 parts, Suzhou soil 5.5 parts, Alpha-alumina 4.5 parts.
The brick body detection physical and chemical index fired is: SiO2Mass percentage content 17.3%, Al2O3Mass percentage content 82.2%, remaining material mass degree 0.5%, the porosity 15.51%, cold crushing strength 83.0MPa, refractoriness under load 1653 DEG C, thermal expansion ratio 0.52.In brick body, high-temperature stable crystalline phase accounts for 99.3%.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 20 parts, 30 parts of quartz, Stalactitum 5.5 parts, 15 parts of ripe Talcum, 20 parts of Suzhou soil, aluminium oxide 4.5 parts, 16.5 parts of zirconium English powder, cerium sesquioxide 3 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.6mm.Then being fired, calcining system is: 12h is fired in room temperature ~ 300 DEG C, fires 10h for 300 DEG C ~ 600 DEG C, fires 12.5h for 600 DEG C ~ 1500 DEG C, fires 2h for 1500 DEG C.
Detecting glaze after having fired is 5.8mm at brick body surface compact permeable formation, surface glaze layer thickness 0.6mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0011 ‰.
Embodiment 2
The parts by weight of raw materials of brick body consists of mullite particle 30, mullite powder 8 parts, fused white corundum 8 parts, andalusite 8 parts, sillimanite 8 parts, Suzhou soil 8 parts, Alpha-alumina 6 parts.
The brick body detection physical and chemical index fired is: SiO2Mass percentage content 14.6%, Al2O3Mass percentage content 84.98, remaining material mass degree 0.42%, the porosity 15.3%, cold crushing strength 81.3MPa, refractoriness under load 1650 DEG C, thermal expansion ratio 0.53.In brick body, high-temperature stable crystalline phase accounts for 99.2%.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 23 parts, 38 parts of quartz, Stalactitum 4.5 parts, 17 parts of ripe Talcum, 23 parts of Suzhou soil, aluminium oxide 6 parts, 14 parts of zirconium English powder, cerium sesquioxide 2 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.6mm.Then being fired, calcining system is: 12h is fired in room temperature ~ 300 DEG C, fires 9h for 300 DEG C ~ 600 DEG C, fires 14h for 600 DEG C ~ 1500 DEG C, fires 1.5h for 1500 DEG C.
Detecting glaze after having fired is 5.4mm at brick body surface compact permeable formation, surface glaze layer thickness 0.65mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0010 ‰.
Embodiment 3
The parts by weight of raw materials of brick body consists of mullite particle 40, mullite powder 8 parts, fused white corundum 6 parts, andalusite 6 parts, sillimanite 7 parts, Suzhou soil 7 parts, Alpha-alumina 4 parts；The brick body detection physical and chemical index fired is: SiO2Mass percentage content 20.11%, Al2O3Mass percentage content 79.78, remaining material mass degree 0.11%, the porosity 15.7%, cold crushing strength 81.9MPa, refractoriness under load 1652 DEG C, thermal expansion ratio 0.51.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 25 parts, 25 parts of quartz, Stalactitum 4 parts, 14 parts of ripe Talcum, 21 parts of Suzhou soil, aluminium oxide 1.5 parts, 23 parts of zirconium English powder, ceria 2 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.7mm.Then being fired, calcining system is: 14h is fired in room temperature ~ 300 DEG C, fires 44h for 300 DEG C ~ 600 DEG C, fires 13h for 600 DEG C ~ 1500 DEG C, fires 2.5h for 1500 DEG C.
Detecting glaze after having fired is 5.3mm at brick body surface compact permeable formation, surface glaze layer thickness 0.72mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0013 ‰.
Embodiment 4
The parts by weight of raw materials of brick body consists of mullite particle 45, mullite powder 5 parts, fused white corundum 5 ~ part, andalusite 5 parts, sillimanite 3 parts, Suzhou soil 3 parts, Alpha-alumina 1 part.The brick body detection physical and chemical index fired is: SiO2Mass percentage content 30%, Al2O3Mass percentage content 69.99, remaining material mass degree 0.01%, the porosity 15.8%, cold crushing strength 81MPa, refractoriness under load 1646 DEG C, thermal expansion ratio 0.55.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 30 parts, 20 parts of quartz, Stalactitum 8 parts, 10 parts of ripe Talcum, 30 parts of Suzhou soil, aluminium oxide 1 part, 25 parts of zirconium English powder, cerium sesquioxide 1 part.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.8mm.Then being fired, calcining system is: 15h is fired in room temperature ~ 300 DEG C, fires 8h for 300 DEG C ~ 600 DEG C, fires 15h for 600 DEG C ~ 1500 DEG C, fires 1h for 1500 DEG C.
Detecting glaze after having fired is 5.7mm at brick body surface compact permeable formation, surface glaze layer thickness 0.5mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0017 ‰.
Embodiment 5
The parts by weight of raw materials of brick body consists of mullite particle 25, mullite powder 5 parts, fused white corundum 10 parts, andalusite 10 parts, sillimanite 8 parts, Suzhou soil 8 parts, Alpha-alumina 8 parts.The brick body detection physical and chemical index fired is: SiO2Mass percentage content 14.5%, Al2O3Mass percentage content 85, remaining material mass degree 0.5%, the porosity 15.2%, cold crushing strength 83MPa, refractoriness under load 1653 DEG C, thermal expansion ratio 0.50.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 10 parts, 40 parts of quartz, Stalactitum 3 parts, 20 parts of ripe Talcum, 10 parts of Suzhou soil, aluminium oxide 8 parts, 10 parts of zirconium English powder, cerium sesquioxide 5 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.5mm.Then being fired, calcining system is: 10h is fired in room temperature ~ 300 DEG C, fires 12h for 300 DEG C ~ 600 DEG C, fires 10h for 600 DEG C ~ 1500 DEG C, fires 3h for 1500 DEG C.
Detecting glaze after having fired is 5.1mm at brick body surface compact permeable formation, surface glaze layer thickness 1.1mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0008 ‰.
Embodiment 6
The parts by weight of raw materials of brick body consists of mullite particle 30, mullite powder 10 parts, fused white corundum 5 parts, andalusite 10 parts, sillimanite 3 parts, Suzhou soil 8 parts, Alpha-alumina 1 part；The brick body detection physical and chemical index fired is: SiO2Mass percentage content 26.31%, Al2O3Mass percentage content 82.69, remaining material mass degree 1.0%, the porosity 15.23%, cold crushing strength 82.1MPa, refractoriness under load 1651 DEG C, thermal expansion ratio 0.51.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 30 parts, 40 parts of quartz, Stalactitum 3 parts, 10 parts of ripe Talcum, 10 parts of Suzhou soil, aluminium oxide 1 part, 25 parts of zirconium English powder, ceria 5 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.6mm.Then being fired, calcining system is: 13h is fired in room temperature ~ 300 DEG C, fires 9h for 300 DEG C ~ 600 DEG C, fires 10h for 600 DEG C ~ 1500 DEG C, fires 1h for 1500 DEG C.
Detecting glaze after having fired is 5.3mm at brick body surface compact permeable formation, surface glaze layer thickness 0.6mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0014 ‰.
Comparative example 1
The parts by weight of raw materials of brick body consists of mullite particle 60, fused white corundum 2 parts, andalusite 15 parts, sillimanite 10 parts, 3 parts of Suzhou soil.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 20 parts, 30 parts of quartz, Stalactitum 5.5 parts, 15 parts of ripe Talcum, 20 parts of Suzhou soil, aluminium oxide 4.5 parts, 16.5 parts of zirconium English powder, cerium sesquioxide 3 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.6mm.Then being fired, calcining system is: 12h is fired in room temperature ~ 300 DEG C, fires 10h for 300 DEG C ~ 600 DEG C, fires 12.5h for 600 DEG C ~ 1500 DEG C, fires 2h for 1500 DEG C.
Detecting glaze after having fired is 1.2mm at brick body surface compact permeable formation, surface glaze layer thickness 1.5mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.08 ‰.
Comparative example 2
The parts by weight of raw materials of brick body consists of mullite particle 35, mullite powder 8 parts, fused white corundum 8 parts, andalusite 8 parts, sillimanite 5.5 parts, Suzhou soil 5.5 parts, Alpha-alumina 4.5 parts.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 60 parts, 20 parts of quartz, 30 parts of ripe Talcum, 5 parts of Suzhou soil.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.6mm.Then being fired, calcining system is: 12h is fired in room temperature ~ 300 DEG C, fires 10h for 300 DEG C ~ 600 DEG C, fires 12.5h for 600 DEG C ~ 1500 DEG C, fires 2h for 1500 DEG C.
Detecting glaze after having fired is 2.1mm at brick body surface compact permeable formation, surface glaze layer thickness 1.4mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.09 ‰.
Comparative example 3
The parts by weight of raw materials of brick body consists of mullite particle 35, mullite powder 8 parts, fused white corundum 8 parts, andalusite 8 parts, sillimanite 5.5 parts, Suzhou soil 5.5 parts, Alpha-alumina 4.5 parts.
The parts by weight of raw materials of surface high-temp glaze layer consists of: Anhydrite 20 parts, 30 parts of quartz, Stalactitum 5.5 parts, 15 parts of ripe Talcum, 20 parts of Suzhou soil, aluminium oxide 4.5 parts, 16.5 parts of zirconium English powder, cerium sesquioxide 3 parts.
Brick body surface uses coating enameling method glazing, controls glazed thickness 1.6mm.Then being fired, calcining system is: 12h is fired in room temperature ~ 300 DEG C, fires 3h for 300 DEG C ~ 600 DEG C, fires 4h for 600 DEG C ~ 1500 DEG C, fires 10h for 1500 DEG C.
Detecting glaze after having fired is 3.4mm at brick body surface compact permeable formation, surface glaze layer thickness 1.1mm.500 blocks of refractory brick detect SiS in brick body after using 5 months in high sulfur petroleum coke high-temperature calcination stove2Mass content be 0.0097 ‰.
Embodiment and comparative example 1 are compared it can be seen that work as the raw material routine that brick body uses.And when cannot form suitable crystalline phase.Timely use height of the present invention to ooze glaze and also cannot penetrate into inside brick body.When using in high sulfur petroleum coke high-temperature calcination stove, sulfur resistive divides erosiveness not enough.Embodiment and comparative example 2 are compared and be can be seen that when the glaze of surface glaze layer uses conventional glaze, even if defining the suitable porosity in brick body.Owing to glaze lacks permeability, also cannot penetrate into inside brick body.Sulfur resistive when using in having a strong impact on high sulfur petroleum coke high-temperature calcination stove divides erosion performance.Embodiment and comparative example 3 compare that the calcining system that can be seen that at glaze is unreasonable is, it is impossible to make height ooze glaze and be fully infiltrated into inside brick body.When stove brick uses in high sulfur petroleum coke high-temperature calcination stove, sulfur resistive divides the erosion performance still can be not enough.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, and any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as the Equivalent embodiments of equivalent variations.But every without departing from technical solution of the present invention content, any simple modification, equivalent variations and remodeling above example made according to the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (5)
1. a high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick, including surface glaze layer and internal brick body, it is characterized in that: described brick body uses 25 ~ 45 weight portion mullites as particulate material, 5 ~ 10 weight portion mullite powders, 5 ~ 10 weight portion fused white corundums, 5 ~ 10 weight portion andalusites, 3 ~ 8 weight portion sillimanites, 3 ~ 8 weight portion Suzhou clays are as fine powder material, and adding 1 ~ 8 part of alpha-alumina modification, the total mass ratio of particulate material and fine powder material is 25 ~ 45:22 ~ 54；
Described surface glaze layer uses high-temperature glaze, and the concrete parts by weight of raw materials of high-temperature glaze consists of: Anhydrite 10 ~ 30 parts, 20 ~ 40 parts of quartz, Stalactitum 3 ~ 8 parts, 10 ~ 20 parts of ripe Talcum, 10 ~ 30 parts of Suzhou soil, aluminium oxide 1 ~ 8 part, 10 ~ 25 parts of zirconium English powder, rare earth oxide 1 ~ 5 part.
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick the most according to claim 1, it is characterised in that: the physical and chemical index of brick body is: SiO2
Mass percentage content 14.5% ~ 30%, Al2O3Mass percentage content 70% ~ 85%, remaining material mass degree 0 ~ 1%, the porosity 15.2% ~ 15.8%, cold crushing strength 81 MPa ~ 83MPa, refractoriness under load 1646 DEG C ~ 1653 DEG C, thermal expansion ratio 0.50 ~ 0.55.
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick the most according to claim 1, it is characterised in that: described high-temperature glaze chemical quality percentage ratio consists of: SiO2 50%~60%、Al2O310%~15%、CaO 4%~8%、 MgO5%~12%、 K2O1%~4%、 Na2O1%~3%、 ZrO26% ~ 15%, other compositions 1% ~ 4%.
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick the most according to claim 1, it is characterised in that: described surface glaze layer uses coating enameling method, and controls glazed thickness 1.5mm ~ 1.8mm.
A kind of high sulfur petroleum coke high-temperature calcination stove corundum-mullite brick the most according to claim 1, it is characterized in that: the calcining system of described surface glaze layer is: 10h ~ 15h is fired in room temperature ~ 300 DEG C, fire 8h ~ 12h for 300 DEG C ~ 600 DEG C, fire 10h ~ 15h for 600 DEG C ~ 1500 DEG C, fire 1h ~ 3h for 1500 DEG C.
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| CN111217612A (en) * | 2018-11-23 | 2020-06-02 | 东台市悦兴耐火材料有限公司 | Corundum-mullite perforated brick for roller kiln |
| CN110407592A (en) * | 2019-08-09 | 2019-11-05 | 洛阳特耐窑炉工程有限公司 | A kind of formula and preparation method thereof of aluminum amorphous refractory |
| CN112573932B (en) * | 2020-12-16 | 2022-12-02 | 淄博工陶新材料集团有限公司 | Homogeneous body re-sintered fused zirconia mullite brick and preparation method thereof |
| CN115286405B (en) * | 2022-08-25 | 2023-03-24 | 宜兴瑞泰耐火材料有限公司 | Low-aluminum mullite brick with high molybdenum waste liquid corrosion resistance and preparation method thereof |
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| CN102617189B (en) * | 2012-03-31 | 2013-10-23 | 山东万乔集团有限公司 | Enameled brick for oven door of coke oven |
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