CN110002887A - The refractory material and preparation method thereof of ash attack under the conditions of a kind of high temperature resistant - Google Patents
The refractory material and preparation method thereof of ash attack under the conditions of a kind of high temperature resistant Download PDFInfo
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- CN110002887A CN110002887A CN201910385911.3A CN201910385911A CN110002887A CN 110002887 A CN110002887 A CN 110002887A CN 201910385911 A CN201910385911 A CN 201910385911A CN 110002887 A CN110002887 A CN 110002887A
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- 239000011819 refractory material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 32
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 15
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- 239000011449 brick Substances 0.000 claims abstract description 13
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 238000009272 plasma gasification Methods 0.000 abstract description 4
- 238000005056 compaction Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 10
- 239000002893 slag Substances 0.000 description 7
- 229910052593 corundum Inorganic materials 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 6
- 229910052845 zircon Inorganic materials 0.000 description 6
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 239000010431 corundum Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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Abstract
The invention discloses a kind of refractory materials and preparation method thereof of ash attack under the conditions of high temperature resistant, the refractory material is by refractory raw material and accounts for the adhesive of refractory raw material quality 5-7% and is mixed, the refractory raw material consists of the following components in percentage by weight: 40-45% zirconium oxide, 20-25% silica, 15-25% chromium oxide, 5-7% magnesia, 8-10% aluminium oxide.Preparation process is: in proportion mixing each material powder, high temperature is kneaded after adhesive is added, and then through cold isostatic compaction, drying, sintering, standard refractory brick is made.Refractory material produced by the present invention can satisfy 2200-2500 DEG C of bottom of furnace body of hot environment of plasma gasification furnace, and can be resistant to ash attack.
Description
Technical field
The present invention relates to fire resisting material fields, and in particular under the conditions of a kind of high temperature resistant the refractory material of ash attack and its
Preparation method.
Background technique
The processing method of municipal refuse at present, remaining burning ash after generally being burned using melt process, while reaching nothing
Evilization and minimizing.Flying dust is the waste gas dedusting by incinerator and the ash obtained.Main component in flying dust is a certain amount of
CaCl2Hydrate and unreacted Ca (OH)2And CaCO3, NaCl, KCl, CaCl2Equal salts.The acid-base property of slag can make with it is resistance to
The reactivity of fiery material and slag viscosity etc. change, and slag can cause to damage with reacting for resistance to material to refractory material, thus shadow
Ring the fire resistance of material.Therefore when mixing fusing fly ash, while considering its flyash treatment method, it is also contemplated that soda acid alkali
Influence and lime-ash erosion to resistance to material of the degree variation to inner lining refractory.
The refractory material that melting furnace uses at present mainly has clay product and metal oxide materials, for common
Clay refractory material, for furnace body operation temperature generally will be lower than 1000 DEG C, the heat-resisting quantity of this material can expire
The operation requirement of sufficient plasma gasification melting furnace.It is raw material that zircon corundum brick, which is using industrial alumina powder and selected zircon sand,
Manufactured ZrO2The refractory product that content is 33%~45%.The high temperature resistance of zircon corundum brick is although than clay refractory material
It is good, it can achieve 1700-2000 DEG C or so, but be not still able to satisfy the operation requirement of plasma gasification melting furnace.In addition, general
The resistance to ash attack ability of logical zircon corundum brick is weak, and service life is short.
In order to solve problems, urgent need develops a kind of refractory material, can either meet 2200-2500 DEG C of bottom of furnace body
Hot environment, while there is the characteristic of preferable resistance to ash attack.
Summary of the invention
The object of the present invention is to provide a kind of refractory materials of ash attack under the conditions of high temperature resistant, can satisfy plasma (orifice) gas
Change 2200-2500 DEG C of bottom of furnace body of hot environment of furnace, and can be resistant to ash attack.
It is a further object of the present invention to provide the preparation method of the refractory material of ash attack under the conditions of high temperature resistant, technique letters
It is single.
To achieve the above object, The technical solution adopted by the invention is as follows: under the conditions of a kind of high temperature resistant ash attack it is resistance to
Fiery material is mixed by refractory raw material and the adhesive for accounting for refractory raw material quality 5-7%, and the refractory raw material is by following heavy
The group of amount percentage is grouped as: 40-45% zirconium oxide, 20-25% silica, 15-25% chromium oxide, 5-7% magnesia, 8-
10% aluminium oxide.
Preferably, the refractory raw material consists of the following components in percentage by weight: 45% zirconium oxide, 20% titanium dioxide
Silicon, 20% chromium oxide, 7% magnesia, 8% aluminium oxide.
Preferably, the zirconium oxide, silica, chromium oxide, magnesia, aluminium oxide granularity be respectively less than 400 mesh.Due to
Each raw material purity with higher and thinner granularity make manufactured product have better performance.
Preferably, described adhesive is condensation of aluminum phosphate.
The present invention also provides the preparation methods of the refractory material of ash attack under the conditions of above-mentioned high temperature resistant, including following step
It is rapid:
(1) it weighs each raw material powder of zirconium oxide, silica, chromium oxide, magnesia, aluminium oxide respectively in mass ratio, mixes
It closes uniformly, the adhesive of total mass of raw material 5-7% is then added, 5-10min is mixed, then high speed is kneaded 15-20min；
(2) material after kneading is placed in super-pressure compression moulding in cold isostatic press, wet base is made；
(3) wet base is put into drier dry；
(4) dried green body is put into electric furnace and is sintered, 2200 DEG C of sintering temperature, time 15h, standard refractory is made
Brick.
Preferably, in step (2), briquetting pressure 210Mpa.
Preferably, in step (3), drying temperature is 100-150 DEG C.
Compared with prior art, the invention has the following beneficial effects:
1. Al in common zircon corundum brick2O3The ability that resistance to flying dust corrodes is weaker, and the anti-flying dust permeability of high-chrome brick is preferable,
Cr2O3With excellent anti-flying dust aggressivity, therefore a certain amount of Cr is added in the present invention in the refractory material of preparation2O3, with this
To improve refractory brick to the erosion resistance of lime-ash.
2.Cr2O3Property stablize, high temperature resistance is preferable, joined a certain amount of Cr in the material2O3It can be improved material
The high temperature resistance of material.
3.MgO can effectively increase the thermal shock resistance of material, and increasing a certain amount of MgO in refractory material can have
The thermal shock resistance of the adjusting material of effect.
Detailed description of the invention
Fig. 1 is revolution erosion test schematic diagram；
Fig. 2 is refractoriness test schematic diagram.
Specific embodiment
Invention is further described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
The refractory material of ash attack, by refractory raw material and accounts for refractory raw material quality 6% under the conditions of a kind of high temperature resistant
Adhesive condensation of aluminum phosphate is mixed, and the refractory raw material consists of the following components in percentage by weight: 45% zirconium oxide,
20% silica, 20% chromium oxide, 7% magnesia, 8% aluminium oxide.
Preparation step is as follows:
(1) it weighs each raw material powder of zirconium oxide, silica, chromium oxide, magnesia, aluminium oxide respectively in mass ratio, mixes
It closes uniformly, the adhesive condensation of aluminum phosphate of total mass of raw material 6% is then added, 5-10min is mixed, then high speed is kneaded 15-
20min；
(2) material after kneading is placed in cold isostatic press, with the super-pressure compression moulding of 210MPa, wet base is made,
Size is 230mm*150mm*75mm；
(3) wet base is put into drying in drier, drying temperature is 100-150 DEG C；
(4) dried green body is put into electric furnace and is sintered, 2200 DEG C of sintering temperature, time 15h, standard refractory is made
Brick.
Embodiment 2
The refractory material of ash attack, by refractory raw material and accounts for refractory raw material quality 5% under the conditions of a kind of high temperature resistant
Adhesive is mixed, and the refractory raw material consists of the following components in percentage by weight: 40% zirconium oxide, 25% titanium dioxide
Silicon, 18% chromium oxide, 7% magnesia, 10% aluminium oxide.
Preparation method is the same as embodiment 1.
Embodiment 3
The refractory material of ash attack, by refractory raw material and accounts for refractory raw material quality 7% under the conditions of a kind of high temperature resistant
Adhesive is mixed, and the refractory raw material consists of the following components in percentage by weight: 45% zirconium oxide, 25% titanium dioxide
Silicon, 15% chromium oxide, 5% magnesia, 10% aluminium oxide.
Preparation method is the same as embodiment 1.
Embodiment 4
The refractory material of ash attack, by refractory raw material and accounts for refractory raw material quality 6% under the conditions of a kind of high temperature resistant
Adhesive is mixed, and the refractory raw material consists of the following components in percentage by weight: 40% zirconium oxide, 20% titanium dioxide
Silicon, 25% chromium oxide, 6% magnesia, 9% aluminium oxide.
Preparation method is the same as embodiment 1.
The resistance to ash attack of refractory material is tested
The standard refractory brick for selecting embodiment 1 to prepare, carries out revolution erosion test, by the standard refractory brick prepared as schemed
It is placed on revolution shown in 1 to invade in furnace, sample is mounted on as required in anti-slag furnace, furnace body is allowed to horizontally rotate heating, with about 500
DEG C/rate of h raises the temperature to 2000 DEG C, 30min is kept the temperature, lime-ash 2000g is added later, then be warming up to 2500 DEG C, makes it
The slag bath of about 10mm depth is formed, lh is kept the temperature；Heat preservation finishes, and keeps heating and the revolution deslagging of anti-slag furnace.Furnace body is resetted later
Add slag 500g again afterwards, lh is kept under test temperature, again deslagging.96h is repeated in this process.After the test, by furnace
Body natural cooling.The depth of erosion and penetration depth column for obtaining obtained material are as follows:
Table 1 turns round the depth of erosion and penetration depth that etching measures refractory material
Note: the component of common zircon corundum brick is SiO218-20%, ZrO235-40%, Al2O335-40%.
It can be obtained by experiment, fused alumina zirconia material obtained by the present invention, material has good lower ash attack resistant to high temperatures
Effect.
The refractoriness of refractory material is tested
Each ingredient relative mass proportioned raw material are chosen, is put into mortar and be ground to it and can pass through
The testing sieve of 180um is formed with the powdered sample of water reconciliation using test cone molding die.Refractory material is first passed through
2000 DEG C of pre-burning, then molded test is bored.Configure three kinds of standard pyrometric cones: (wherein N is 2500 DEG C of temperature nearby by N, N+1, N-1
The thermoscope of degree, N+1, N-1 are the standard pyrometric cone of N high No.1 and low No.1).Sample standard cone is placed in 2mm- on frustum
In the hole of 3mm, fixed using fire clay.
Frustum is placed in the equal temperate zone of stove, furnace temperature is risen to 2300 DEG C within the 1.5-2h time, later according to 2.5 DEG C/min
Speed at the uniform velocity heat up, until any test cone is curved touches frustum down to it.The form of record and test sample and standard cone, sentences
Break resistance to material temperature.Resistance to material prepared by us, heatproof degree are 2550 DEG C, meet the demand of plasma gasification melting furnace.
Claims (7)
1. the refractory material of ash attack under the conditions of a kind of high temperature resistant, which is characterized in that by refractory raw material and account for refractory raw material
The adhesive of quality 5-7% is mixed, and the refractory raw material consists of the following components in percentage by weight: 40-45% oxidation
Zirconium, 20-25% silica, 15-25% chromium oxide, 5-7% magnesia, 8-10% aluminium oxide.
2. the refractory material of ash attack under the conditions of a kind of high temperature resistant according to claim 1, which is characterized in that described resistance to
Fiery raw material consists of the following components in percentage by weight: 45% zirconium oxide, 20% silica, 20% chromium oxide, 7% oxidation
Magnesium, 8% aluminium oxide.
3. the refractory material of ash attack under the conditions of a kind of high temperature resistant according to claim 1 or 2, which is characterized in that institute
State zirconium oxide, silica, chromium oxide, magnesia, aluminium oxide granularity be respectively less than 400 mesh.
4. the refractory material of ash attack under the conditions of a kind of high temperature resistant according to claim 1 or 2, which is characterized in that institute
Stating adhesive is condensation of aluminum phosphate.
5. the preparation method of the refractory material of ash attack, feature exist under the conditions of a kind of high temperature resistant of any of claims 1 or 2
In, comprising the following steps:
(1) each raw material powder of zirconium oxide, silica, chromium oxide, magnesia, aluminium oxide is weighed respectively in mass ratio, mixing is equal
It is even, the adhesive of total mass of raw material 5-7% is then added, 5-10min is mixed, then high speed is kneaded 15-20min；
(2) material after kneading is placed in super-pressure compression moulding in cold isostatic press, wet base is made；
(3) wet base is put into drier dry；
(4) dried green body is put into electric furnace and is sintered, 2200 DEG C of sintering temperature, time 15h, standard refractory brick is made.
6. the preparation method of the refractory material of ash attack under the conditions of high temperature resistant according to claim 5, which is characterized in that
In step (2), briquetting pressure 210Mpa.
7. the preparation method of the refractory material of ash attack under the conditions of high temperature resistant according to claim 5, which is characterized in that
In step (3), drying temperature is 100-150 DEG C.
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| CN110407596A (en) * | 2019-09-06 | 2019-11-05 | 山西普皓环保科技有限公司 | One kind castable refractory containing fused alumina zirconia and preparation method thereof |
| 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 |
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| CN116835977A (en) * | 2023-05-24 | 2023-10-03 | 无锡市南方耐材有限公司 | Ladle nozzle brick and preparation method thereof |
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