CN115286405A - Low-aluminum mullite brick with high molybdenum waste liquid corrosion resistance and preparation method thereof - Google Patents
Low-aluminum mullite brick with high molybdenum waste liquid corrosion resistance and preparation method thereof Download PDFInfo
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- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/3427—Silicates other than clay, e.g. water glass
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- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
Abstract
The invention discloses a zirconium mullite brick for a high-salt incinerator and a preparation method thereof, wherein the zirconium mullite brick comprises 63-83% of electric-melting mullite, 5-10% of alumina micro powder, 2-7% of zirconium silicon micro powder, 5-10% of zirconia, 5-10% of inhibitor and 3-8% of binding agent in percentage by weight of the total weight of the components. The zirconium mullite brick for the high-salt incinerator has high normal-temperature compressive strength and high-temperature compressive strength, ultralow apparent porosity and thermal shock stability, and can effectively resist stress damage caused by temperature fluctuation caused by furnace start and shutdown. In addition, by introducing the inhibitor, the inhibitor is utilized to effectively avoid or slow down the reaction speed of metal ions and materials, so that the stability of the material structure is ensured in the use process, and the service life of the material is prolonged. The process of soaking in brine and re-burning the finished brick is adopted, so that the properties of the whole material are modified to a certain degree, and the salt corrosion resistance of the material is improved.
Description
Technical Field
The invention belongs to the field of refractory materials, and particularly relates to a low-aluminum mullite brick for high molybdenum waste liquid corrosion resistance and a preparation method thereof.
Background
The molybdenum waste liquid is the waste material of a reaction device in the petrochemical industry, the incineration recovery of the molybdenum waste liquid is the most environment-friendly means for treating the molybdenum waste liquid in China at present, and because the molybdenum element in the molybdenum waste liquid is quite active and has quite strong chemical reaction erosion on lining materials in the incineration process, the lining materials of the incinerator are most representative of American and Japanese products, the quality is also most reliable, and the existing devices in China all depend on import. According to the design requirements of the working condition on the inner lining of the incinerator, the lining must have strong chemical erosion resistance, particularly the erosion resistance of molybdenum steam. The traditional method in China is to improve the sintering strength of the material and reduce the apparent porosity of the material so as to achieve physical erosion resistance, but aluminum molybdate is generated after the aluminum oxide in the material is contacted with molybdenum steam, and the generated aluminum molybdate is an irreversible expansion reaction process, so that the surface volume of the material is expanded, the texture structure is loosened and slag is removed, and the thickness of the lining is rapidly reduced. The selection of materials with other properties has specific use conditions, so that the traditional method cannot solve the problems well.
Disclosure of Invention
The invention aims to: the invention aims to solve the technical problem of the prior art, and provides a low-aluminum mullite brick for high resistance to molybdenum waste liquid corrosion and a preparation method thereof, which have good resistance to molybdenum steam and realize the corrosion resistance of materials, thereby well solving the problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a low-aluminum mullite brick for high molybdenum waste liquid corrosion resistance comprises the following components in percentage by mass:
the sum of the components is 100 percent, and the weight sum of the components is as follows:
3-10% of a binding agent.
Preferably, the composition comprises the following components in percentage by mass:
the sum of the components is 100 percent, and the weight sum of the components is as follows:
5% of a binding agent.
Wherein, the grain diameter of the high-purity compact low-aluminum mullite is preferably 6-0.044mm, the porosity is less than or equal to 5%, the water absorption is less than or equal to 3%, and the mullite phase content is more than 72%.
The andalusite has a particle size of 1.0-0.074mm, and the content of alumina is more than or equal to 57%.
Preferably, the size of the silicon wire Dan Lijing is 0.5-0.074mm, and the content of alumina is more than or equal to 56%.
Preferably, the grain size of the alumina micro powder is less than or equal to 0.0015mm, the content of the alumina is more than or equal to 99.5%, and the grain size of the micro powder is in bimodal distribution.
Preferably, the particle size of the zirconium silica micro powder is less than or equal to 0.005mm, and the content of zirconium oxide is more than or equal to 3%.
Preferably, the clay is any one of sepiolite, spherical clay, sodium-based modified bentonite and modified montmorillonite, and the particle size is 200-380 meshes.
Preferably, the inert inhibitor is a mixture of rare earth raw materials, the main components of the inert inhibitor are cerium oxide and europium oxide, the content of the cerium oxide is 40-50%, and the content of the europium oxide is 30-50%;
the binding agent is liquid silica sol.
Further, the invention also claims a preparation method of the low-aluminum mullite brick for resisting the corrosion of the molybdenum waste liquid, which comprises the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so that the fine powder is convenient to press at the later stage, wherein the mixing time is 5-8 minutes, and the mixed raw material needs to be aged for 8-16 hours to ensure that the bonding agent is fully infiltrated into the raw material;
(2) The green bricks are pressed and formed by a 2000-ton servo hydraulic press, so that the compactness of the green bricks is ensured;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 180-200 ℃ for 72-100 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at the firing temperature of 1580 ℃ for 8 hours.
Has the advantages that:
(1) The low-alumina mullite brick for resisting the corrosion of the molybdenum waste liquid has high compressive strength and wear resistance due to the fact that the high-purity compact low-alumina mullite is used as a main raw material, can effectively resist the scouring of materials, and avoids damage caused by physical scouring.
(2) The low-alumina mullite brick for resisting the corrosion of the molybdenum waste liquid effectively reduces the apparent porosity of the product due to the addition of part of the zirconium silicon micro powder, can effectively resist the permeation of materials and reduce the damage of permeability corrosion.
(3) The low-aluminum mullite brick for resisting the corrosion of the molybdenum waste liquid has the advantages that the mullite phase of the product is further improved due to the addition of part of andalusite and sillimanite, so that the brick has better thermal shock stability, and can effectively resist the stress damage caused by temperature fluctuation caused by starting and stopping the furnace.
(4) The invention introduces the inert inhibitor for the first time, utilizes the inhibitor to wrap the surface of the material and generate inertia, effectively avoids or slows down the reaction speed of the molybdenum steam and the material, ensures the stability of the material structure in the use process and prolongs the service life of the material.
Detailed Description
The invention will be better understood from the following examples.
In the following examples, the grain size of the high-purity compact low-alumina mullite is 6-0.044mm, the porosity is less than or equal to 5%, the water absorption is less than or equal to 3%, and the mullite phase content is more than 72%.
The andalusite has a particle size of 1.0-0.074mm, and the content of alumina is more than or equal to 57%.
The size of the silicon wire Dan Lijing is 0.5-0.074mm, and the content of alumina is more than or equal to 56 percent.
The grain size of the alumina micro powder is less than or equal to 0.0015mm, the content of the alumina is more than or equal to 99.5 percent, and the grain size of the micro powder is in bimodal distribution.
The grain diameter of the zirconium silicon micro powder is less than or equal to 0.005mm, and the content of zirconium oxide is more than or equal to 3 percent.
The clay is sepiolite with particle size of 200-380 mesh.
The inert inhibitor is a mixture of rare earth raw materials, and comprises cerium oxide and europium oxide as main components, wherein the content of the cerium oxide is 45%, and the content of the europium oxide is 40%.
The bonding agent is liquid silica sol.
Example 1
The sum of the components is 100 percent, and the weight sum of the components is as follows:
5 percent of binding agent.
The preparation process comprises the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so as to facilitate later-stage pressing, wherein the mixing time is 5-8 minutes, the mixed raw materials need to be aged for 8-16 hours, and a binding agent is ensured to fully permeate into the raw materials;
(2) Pressing and molding by a 2000-ton servo hydraulic press to ensure the compactness of a green brick;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 180 ℃ for 100 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at 1580 ℃ for 8 hours.
Example 2
The sum of the components is 100 percent, and the weight sum of the components is as follows:
5% of a binding agent.
The preparation process comprises the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so that the fine powder is convenient to press at the later stage, wherein the mixing time is 5-8 minutes, and the mixed raw material needs to be aged for 8-16 hours to ensure that the bonding agent is fully infiltrated into the raw material;
(2) Pressing and molding by a 2000-ton servo hydraulic press to ensure the compactness of a green brick;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 180 ℃ for 80 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at the firing temperature of 1580 ℃ for 8 hours.
Example 3
The sum of the components is 100 percent, and the weight sum of the components is as follows:
5% of a binding agent.
The preparation process comprises the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so as to facilitate later-stage pressing, wherein the mixing time is 5-8 minutes, the mixed raw materials need to be aged for 8-16 hours, and a binding agent is ensured to fully permeate into the raw materials;
(2) Pressing and molding by a 2000-ton servo hydraulic press to ensure the compactness of a green brick;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 200 ℃ for 80 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at the firing temperature of 1580 ℃ for 8 hours.
Example 4
The sum of the components is 100 percent, and the weight sum of the components is as follows:
5% of a binding agent.
The preparation process comprises the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so that the fine powder is convenient to press at the later stage, wherein the mixing time is 5-8 minutes, and the mixed raw material needs to be aged for 8-16 hours to ensure that the bonding agent is fully infiltrated into the raw material;
(2) Pressing and molding by a 2000-ton servo hydraulic press to ensure the compactness of a green brick;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 200 ℃ for 100 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at 1580 ℃ for 8 hours.
Comparative example
The sum of the components is 100 percent, and the weight sum of the components is as follows:
5% of a binding agent.
The preparation process comprises the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so as to facilitate later-stage pressing, wherein the mixing time is 5-8 minutes, the mixed raw materials need to be aged for 8-16 hours, and a binding agent is ensured to fully permeate into the raw materials;
(2) Pressing and molding by a 2000-ton servo hydraulic press to ensure the compactness of a green brick;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 200 ℃ for 80 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at the firing temperature of 1580 ℃ for 8 hours.
The low-alumina mullite bricks obtained in examples 1 to 4 and comparative examples were subjected to the measurements of compressive strength (GB/T5072-2008), apparent porosity (GB/T2997-2015) and static erosion test (GB/T17601-2008), and the results are shown in Table 1.
TABLE 1
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Compressive strength MPa | 86 | 83 | 85 | 79 | 75 |
| Apparent porosity% | 12.6 | 13.1 | 13.7 | 14.5 | 14.7 |
| 72h static erosion depth mm | 2.1 | 1.6 | 0.8 | 1.5 | 4.6 |
As can be seen from the data in table 1: the low-aluminum mullite brick for high molybdenum waste liquid corrosion resistance has the characteristics of good molybdenum steam corrosion resistance reaction, strong salt corrosion resistance, good thermal shock resistance, good wear resistance, low apparent porosity, high bonding strength, no surface bursting and the like, and can completely meet the normal operation of a molybdenum waste liquid incinerator; compared with the existing refractory brick for the molybdenum-containing waste liquid incinerator, the refractory brick has the advantages that the conventional performance is improved to a certain extent, the salt resistance and the molybdenum corrosion resistance are greatly improved, the technical level is higher, and the using effect is better.
The invention provides a thought and a method for a low-aluminum mullite brick for high molybdenum waste liquid corrosion resistance and a preparation method thereof, and particularly provides a plurality of methods and ways for realizing the technical scheme. All the components not specified in the present embodiment can be realized by the prior art.
Claims (10)
1. The low-aluminum mullite brick for high molybdenum waste liquid corrosion resistance is characterized by comprising the following components in percentage by mass:
the sum of the components is 100 percent, and the weight sum of the components is as follows:
3-10% of a binding agent.
2. The low-aluminum mullite brick for resisting the corrosion of the molybdenum waste liquid according to claim 1, which comprises the following components in percentage by mass:
the sum of the components is 100 percent, and the weight sum of the components is as follows:
5% of a binding agent.
3. The low-alumina mullite brick for resisting the corrosion of molybdenum waste liquid as claimed in claim 1 or 2, wherein the grain size of the high-purity compact low-alumina mullite is 6-0.044mm, the porosity is less than or equal to 5%, the water absorption is less than or equal to 3%, and the mullite phase content is more than 72%.
4. The low-alumina mullite brick for resisting the corrosion of the molybdenum waste liquid as claimed in claim 1 or 2, wherein the grain size of the andalusite is 1.0-0.074mm, and the content of alumina is more than or equal to 57%.
5. The low-alumina mullite brick for resisting the corrosion of molybdenum waste liquid as claimed in claim 1 or 2, wherein the size of the silicon line Dan Lijing is 0.5-0.074mm, and the content of alumina is more than or equal to 56%.
6. The low-alumina mullite brick for resisting the corrosion of the molybdenum waste liquid as claimed in claim 1 or 2, wherein the grain size of the alumina micro powder is less than or equal to 0.0015mm, and the content of the alumina is more than or equal to 99.5%.
7. The low-alumina mullite brick for highly resisting the corrosion of molybdenum waste liquid according to claim 1 or 2, wherein the grain size of the zirconium silica micropowder is less than or equal to 0.005mm, and the content of zirconia is more than or equal to 3%.
8. The low-alumina mullite brick for high molybdenum waste liquid corrosion resistance according to claim 1 or 2, wherein the clay is any one of sepiolite, spherical clay, sodium-based modified bentonite and modified montmorillonite, and the particle size is 200-380 meshes.
9. The low-alumina mullite brick for resisting the corrosion of the molybdenum waste liquid as claimed in claim 1 or 2, wherein the inert inhibitor is a mixture of rare earth raw materials, the main components of the inert inhibitor are cerium oxide and europium oxide, the content of the cerium oxide is 40-50%, and the content of the europium oxide is 30-50%;
the binding agent is liquid silica sol.
10. The preparation method of the low-aluminum mullite brick for resisting the corrosion of the molybdenum waste liquid in the claim 1 or 2 is characterized by comprising the following steps:
(1) Performing mixing granulation by an inclined granulator to ensure that fine powder is uniformly coated on the granules and is in a pellet shape, so as to facilitate later-stage pressing, wherein the mixing time is 5-8 minutes, the mixed raw materials need to be aged for 8-16 hours, and a binding agent is ensured to fully permeate into the raw materials;
(2) Pressing and molding by a 2000-ton servo hydraulic press to ensure the compactness of a green brick;
(3) Naturally drying the pressed green bricks for more than 24 hours, and then baking in a drying kiln at the baking temperature of 180-200 ℃ for 72-100 hours;
(4) And firing the dried green bricks by a high-temperature shuttle kiln at the firing temperature of 1580 ℃ for 8 hours.
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| CN115448739A (en) * | 2022-11-14 | 2022-12-09 | 长兴华泰高温窑具股份有限公司 | Corrosion-resistant zirconium mullite product for soft magnetic ferrite nitrogen kiln and preparation method thereof |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE738739A (en) * | 1968-09-13 | 1970-02-16 | ||
| US3942293A (en) * | 1971-09-20 | 1976-03-09 | Ppg Industries, Inc. | Metal oxide coated refractory brick |
| CN1761634A (en) * | 2003-03-31 | 2006-04-19 | 黑崎播磨株式会社 | Chromium-free monothilic refractory for melting furnace for waste and melting furnace for waste lined with the same |
| CN102757248A (en) * | 2012-07-30 | 2012-10-31 | 鲁山县宏业耐材有限公司 | High-strength high thermal-shock-resistance low-aluminium mullite brick |
| CN103641501A (en) * | 2013-12-05 | 2014-03-19 | 山东耐材集团鲁耐窑业有限公司 | Impervious low-aluminum mullite brick for blast furnace and preparation method thereof |
| CN104193368A (en) * | 2014-08-28 | 2014-12-10 | 洛阳利尔耐火材料有限公司 | Magnesium-spinel brick for RH (Rheinstahl-Hutlenwerke) refining furnaces and preparation method thereof |
| CN104446572A (en) * | 2014-12-23 | 2015-03-25 | 山东万乔集团有限公司 | Corundum mullite brick for high-temperaturehigh sulfur petroleum cokecalcining furnace |
| US20150274599A1 (en) * | 2014-03-31 | 2015-10-01 | Saint-Gobain Ceramics & Plastics, Inc. | Sintered zircon material for forming block |
| CN106521408A (en) * | 2016-11-10 | 2017-03-22 | 洛阳科威钨钼有限公司 | Method for preparing oxidation resisting molybdenum product |
| CN108285351A (en) * | 2018-02-01 | 2018-07-17 | 马鞍山市益江高温陶瓷制造有限公司 | A kind of tundish upper nozzle spinel material and its application |
| CN110451996A (en) * | 2019-08-26 | 2019-11-15 | 湖南德景源科技有限公司 | Lithium electricity saggar mullite preparation process |
| CN110606756A (en) * | 2019-09-06 | 2019-12-24 | 山西普皓环保科技有限公司 | Refractory material for flue of plasma melting furnace and preparation method thereof |
| CN112341177A (en) * | 2020-09-28 | 2021-02-09 | 山东耐材集团鲁耐窑业有限公司 | Corrosion-resistant compact lattice brick for upper part of coke oven regenerator and preparation method thereof |
-
2022
- 2022-08-25 CN CN202211025597.6A patent/CN115286405B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE738739A (en) * | 1968-09-13 | 1970-02-16 | ||
| US3942293A (en) * | 1971-09-20 | 1976-03-09 | Ppg Industries, Inc. | Metal oxide coated refractory brick |
| CN1761634A (en) * | 2003-03-31 | 2006-04-19 | 黑崎播磨株式会社 | Chromium-free monothilic refractory for melting furnace for waste and melting furnace for waste lined with the same |
| CN102757248A (en) * | 2012-07-30 | 2012-10-31 | 鲁山县宏业耐材有限公司 | High-strength high thermal-shock-resistance low-aluminium mullite brick |
| CN103641501A (en) * | 2013-12-05 | 2014-03-19 | 山东耐材集团鲁耐窑业有限公司 | Impervious low-aluminum mullite brick for blast furnace and preparation method thereof |
| US20150274599A1 (en) * | 2014-03-31 | 2015-10-01 | Saint-Gobain Ceramics & Plastics, Inc. | Sintered zircon material for forming block |
| CN104193368A (en) * | 2014-08-28 | 2014-12-10 | 洛阳利尔耐火材料有限公司 | Magnesium-spinel brick for RH (Rheinstahl-Hutlenwerke) refining furnaces and preparation method thereof |
| CN104446572A (en) * | 2014-12-23 | 2015-03-25 | 山东万乔集团有限公司 | Corundum mullite brick for high-temperaturehigh sulfur petroleum cokecalcining furnace |
| CN106521408A (en) * | 2016-11-10 | 2017-03-22 | 洛阳科威钨钼有限公司 | Method for preparing oxidation resisting molybdenum product |
| CN108285351A (en) * | 2018-02-01 | 2018-07-17 | 马鞍山市益江高温陶瓷制造有限公司 | A kind of tundish upper nozzle spinel material and its application |
| CN110451996A (en) * | 2019-08-26 | 2019-11-15 | 湖南德景源科技有限公司 | Lithium electricity saggar mullite preparation process |
| CN110606756A (en) * | 2019-09-06 | 2019-12-24 | 山西普皓环保科技有限公司 | Refractory material for flue of plasma melting furnace and preparation method thereof |
| CN112341177A (en) * | 2020-09-28 | 2021-02-09 | 山东耐材集团鲁耐窑业有限公司 | Corrosion-resistant compact lattice brick for upper part of coke oven regenerator and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448739A (en) * | 2022-11-14 | 2022-12-09 | 长兴华泰高温窑具股份有限公司 | Corrosion-resistant zirconium mullite product for soft magnetic ferrite nitrogen kiln and preparation method thereof |
| CN115448739B (en) * | 2022-11-14 | 2023-03-24 | 长兴华泰高温窑具股份有限公司 | Corrosion-resistant zirconium mullite product for soft magnetic ferrite nitrogen kiln and preparation method thereof |
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| CN115286405B (en) | 2023-03-24 |
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