CN101423415A - High chromite brick prepared by colloid impregnation method - Google Patents
High chromite brick prepared by colloid impregnation method Download PDFInfo
- Publication number
- CN101423415A CN101423415A CNA2008102310971A CN200810231097A CN101423415A CN 101423415 A CN101423415 A CN 101423415A CN A2008102310971 A CNA2008102310971 A CN A2008102310971A CN 200810231097 A CN200810231097 A CN 200810231097A CN 101423415 A CN101423415 A CN 101423415A
- Authority
- CN
- China
- Prior art keywords
- colloid
- chrome brick
- dipping
- high chrome
- brick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention belongs to the field of refractory materials, and provides a high chrome brick impregnated by a colloid. In the high chrome brick, the content of Cr2O3 is more than or equal to 60 weight percent, and the Cr2O3 is a key lining material for a water-coal-slurry gasifier; and the high chrome brick is prepared by the following steps: an ordinary high chrome brick product after the calcination is taken as a raw material, dried, then is placed into an impregnation tank, and is placed into a vacuum device, the colloid with certain viscosity is slowly injected into the impregnation tank under vacuum state until the high chrome brick is completely immerged, the vacuum is maintained for a period of time, the impregnation tank filled with the high chrome brick is kept stand in air for a period of time, and then the high chrome brick is take out of the colloid used for the impregnation and is dried or naturally dried to obtain a product which can be used without high temperature calcination. Compared with the prior high chrome brick products, the high chrome brick has the characteristics of low apparent porosity, high rupture strength, and excellent coal cinder penetration resistance and so on.
Description
Technical field
The invention belongs to fire resisting material field, relate generally to a kind of high-chrome brick that adopts the colloid immersion process for preparing, is the important component part of coal gasification apparatus with refractory materials.
Background technology
Along with constantly riseing of International Crude Oil, utilize cheap relatively coal to produce the coal water slurry gasification technology of ethene, methyl alcohol, synthetic ammonia, generating, coal is fully used, help environmental protection again, have extensive market prospects.Coal water slurry pressurized gasifier is at present domestic coal gasification apparatus the most commonly used.About common about 1500 ℃ of coal slurry gasifier working temperature, stove internal gas pressure 5MPa, strongly reducing atmosphere, liquid acid slag, the high speed of simultaneous gas, liquid, solid body is washed away the fluctuation with air pressure, and these severe condition have proposed high requirement to refractory materials.High-chrome brick (Cr
2O
3-Al
2O
3-ZrO
2Brick) have higher elevated temperature strength, excellent acid resistance cinder permeance property is the crucial inner lining material of coal slurry gasifier.
Common high-chrome brick is take sintering or electric smelting chrome oxide particle as aggregate, with chrome oxide green, electric smelting chromium oxide fine powder, α-Al
2O
3Powder, m-ZrO
2The mixed powder of powder is matrix, adds bond, moulding on friction press, in the high temperature kiln through 1600～1800 ℃ burn till after, can use.Common high-chrome brick, because apparent porosity height (15～20%), low viscous liquid coal slag under high pressure very easily penetrate into high-chrome brick inside by connecting pore, destroy the material internal structure, greatly reduce the life-span of high-chrome brick, also remote effect the whole service life of vapourizing furnace.
Summary of the invention
The objective of the invention is to propose a kind of high-chrome brick that adopts the colloid immersion process for preparing, make it have the strong characteristics of low, the anti-cinder penetrating power of void content, this high-chrome brick is as the inner lining material of coal slurry gasifier, can under the working condition of harshness, use for a long time, improve the bulk life time of coal slurry gasifier.
The present invention finishes the technical scheme that its invention task takes: a kind of high-chrome brick of colloid infusion process preparation, Cr in this high-chrome brick
2O
3Content 〉=60wt%, it is the crucial inner lining material of coal slurry gasifier, this high-chrome brick be common high-chrome brick goods after burning till be raw material, put into after drying the immersion liquid groove, and place vacuum plant, under vacuum state, slowly inject the colloid of certain viscosity in the immersion liquid groove, be completely submerged to high-chrome brick, keep vacuum a period of time, the immersion liquid groove that high-chrome brick is housed left standstill a period of time in air after, high-chrome brick is taken out from the colloid of dipping, after drying or the air dry, obtain need not that high temperature burns till is spendable product.
Described common high-chrome brick goods refer to commercially available Cr
2O
3Mass fraction is 60～95% Cr
2O
3-Al
2O
3-ZrO
2Matter or Cr
2O
3-Al
2O
3Matter is burnt till the setting goods;
Described colloid is that in aluminium dihydrogen phosphate colloid, aluminum phosphate colloid, Plessy's green colloid, aluminum phosphate chromium colloid, zirconium phosphate colloid, chromium hydroxide colloid, alumine hydroxide colloid, the zirconium hydroxide colloid any one or more combines;
Described colloid range of viscosities is 40～300mPas, and the colloidal viscosity number is that the concentration adjustment according to micelle in the dispersion obtains.
Contain the hydroxide colloid of the phosphate colloid of aluminium, chromium, zirconium and aluminium, chromium, zirconium, add Cr to
2O
3-Al
2O
3-ZrO
2Do not introduce new phase in the brick, do not reduce the high-temperature behavior of refractory material.And these colloids infiltrate in the brick, occupy the brick inner air vent, can obviously reduce the material apparent porosity, reduce slag to the infiltration of brick inside.
Compare with existing high-chrome brick goods, the present invention has characteristics such as apparent porosity is low, folding strength is high, anti-excellent coal cinder.
Embodiment
Embodiment 1: with commercially available Cr
2O
3Mass fraction is 90% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, to put into the immersion liquid groove after its 110 ℃ of dryings, and place vacuum plant, under vacuum state (pressure is less than 2500Pa) slowly to inject viscosity in the immersion liquid groove be the aluminium dihydrogen phosphate colloid of 40mPas, be completely submerged to high-chrome brick, keep the about 5min of vacuum, the immersion liquid groove that high-chrome brick is housed is left standstill 60min in air after, high-chrome brick is taken out from the colloid of dipping, and oven dry namely gets product.
Embodiment 2: with commercially available Cr
2O
3Mass fraction is 85% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the aluminum phosphate chromium colloid of 180mPas, and the oven dry of the high-chrome brick behind the dipping is namely got product.
Embodiment 3: with commercially available Cr
2O
3Mass fraction is 95% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 100 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the aluminum phosphate colloid of 100mPas, will namely get product after the high-chrome brick air dry behind the dipping.
Embodiment 4: with commercially available Cr
2O
3Mass fraction is 60% common Cr
2O
3-Al
2O
3It is raw material that matter is burnt till the setting goods, after its 60 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the chromium phosphate colloid of 300mPas, and the oven dry of the high-chrome brick behind the dipping is namely got product.
Embodiment 5: with commercially available Cr
2O
3Mass fraction is 60% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the basic zirconium phosphate colloid of 150mPas, and the oven dry of the high-chrome brick behind the dipping is namely got product.
Embodiment 6: with commercially available Cr
2O
3Mass fraction is 90% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is aluminium dihydrogen phosphate and the basic zirconium phosphate colloid mixture of 50mPas, and the oven dry of the high-chrome brick behind the dipping is namely got product.
Embodiment 7: with commercially available Cr
2O
3Mass fraction is 75% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the alumine hydroxide colloid of 200mPas, will namely get product after the high-chrome brick air dry behind the dipping.
Embodiment 8: with commercially available Cr
2O
3Mass fraction is 95% common Cr
2O
3-Al
2O
3It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the chromium hydroxide colloid of 300mPas, and the oven dry of the high-chrome brick behind the dipping is namely got product.
Embodiment 9: with commercially available Cr
2O
3Mass fraction is 90% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is the zirconium hydroxide colloid of 200mPas, and the oven dry of the high-chrome brick behind the dipping is namely got product.
Embodiment 10: with commercially available Cr
2O
3Mass fraction is 90% common Cr
2O
3-Al
2O
3-ZrO
2It is raw material that matter is burnt till the setting goods, after its 110 ℃ of dryings, presses the colloid dipping method among the embodiment 1, and dipping viscosity is aluminium dihydrogen phosphate and the aluminum phosphate chromium colloid mixture of 120mPas, will namely get product after the high-chrome brick air dry behind the dipping.
The performance of embodiment 1-10 each product of gained is as shown in the table.Volume density, apparent porosity, strength at normal temperature, high temperature break resistant intensity [1400 ℃ * 0.5h] all adopt national proposed standard method to detect; Anti-cinder perviousness adopts static crucible method [1600 ℃ * 8h], and the cinder depth of penetration is determined by SEM (scanning electronic microscope) and EDS (energy spectrum analysis) comprehensive evaluation.
Claims (4)
1, a kind of high-chrome brick of colloid dipping, Cr in the high-chrome brick
2O
3Content 〉=60wt% is the crucial inner lining material of coal slurry gasifier; It is characterized in that:, this high-chrome brick be common high-chrome brick goods after burning till be raw material, put into after drying the immersion liquid groove, and place vacuum plant, under vacuum state, slowly inject the colloid of certain viscosity in the immersion liquid groove, be completely submerged to high-chrome brick, keep vacuum a period of time, the immersion liquid groove that high-chrome brick is housed is left standstill a period of time in air after, high-chrome brick is taken out from the colloid of dipping, after drying or the air dry, obtain need not that high temperature burns till is spendable product.
2, according to the high-chrome brick of claims 1 described colloid dipping, it is characterized in that: common high-chrome brick goods refer to commercially available Cr
2O
3Mass fraction is 60～95% Cr
2O
3-Al
2O
3-ZrO
2Matter or Cr
2O
3-Al
2O
3Matter is burnt till the setting goods.
3, according to the high-chrome brick of the described colloid dipping of claims 1, it is characterized in that: colloid is that in aluminium dihydrogen phosphate colloid, aluminum phosphate colloid, Plessy's green colloid, aluminum phosphate chromium colloid, zirconium phosphate colloid, chromium hydroxide colloid, alumine hydroxide colloid, the zirconium hydroxide colloid any one or more combines;
4, according to the high-chrome brick of the described colloid dipping of claims 1, it is characterized in that: the colloid range of viscosities is 40～300mPas, and the colloidal viscosity number is that the concentration adjustment according to micelle in the dispersion obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102310971A CN101423415A (en) | 2008-11-27 | 2008-11-27 | High chromite brick prepared by colloid impregnation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102310971A CN101423415A (en) | 2008-11-27 | 2008-11-27 | High chromite brick prepared by colloid impregnation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101423415A true CN101423415A (en) | 2009-05-06 |
Family
ID=40614326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102310971A Pending CN101423415A (en) | 2008-11-27 | 2008-11-27 | High chromite brick prepared by colloid impregnation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101423415A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913886A (en) * | 2010-07-23 | 2010-12-15 | 李正平 | 95 chromium-aluminum-zirconium brick for coal water slurry pressurized gasifier and preparation method thereof |
| CN101955361A (en) * | 2010-09-29 | 2011-01-26 | 河南省伯马股份有限公司 | Method for producing high-chrome bricks containing nano composite particles |
| CN102417361A (en) * | 2011-09-16 | 2012-04-18 | 中钢集团洛阳耐火材料研究院有限公司 | Cr2O3-Al2O3 refractory material of anisotropic structure |
| CN109320219A (en) * | 2018-11-13 | 2019-02-12 | 辽宁中镁高温材料有限公司 | A kind of high-performance aluminum chrome refractory and preparation method thereof and application |
-
2008
- 2008-11-27 CN CNA2008102310971A patent/CN101423415A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913886A (en) * | 2010-07-23 | 2010-12-15 | 李正平 | 95 chromium-aluminum-zirconium brick for coal water slurry pressurized gasifier and preparation method thereof |
| CN101913886B (en) * | 2010-07-23 | 2013-08-21 | 李正平 | 95 chromium-aluminum-zirconium brick for coal water slurry pressurized gasifier and preparation method thereof |
| CN101955361A (en) * | 2010-09-29 | 2011-01-26 | 河南省伯马股份有限公司 | Method for producing high-chrome bricks containing nano composite particles |
| CN102417361A (en) * | 2011-09-16 | 2012-04-18 | 中钢集团洛阳耐火材料研究院有限公司 | Cr2O3-Al2O3 refractory material of anisotropic structure |
| CN102417361B (en) * | 2011-09-16 | 2013-07-03 | 中钢集团洛阳耐火材料研究院有限公司 | Cr2O3-Al2O3 refractory material of anisotropic structure |
| CN109320219A (en) * | 2018-11-13 | 2019-02-12 | 辽宁中镁高温材料有限公司 | A kind of high-performance aluminum chrome refractory and preparation method thereof and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101648812B (en) | Preparation method of high-chrome brick | |
| CN107879753A (en) | A kind of carborundum magnesia-aluminum spinel composite fire-resistant material | |
| CN100378029C (en) | Ceramic material of porous spinel, and preparation method | |
| CN103880444B (en) | A kind of environment-friendly type anhydrous stemming and preparation method thereof | |
| CN107892575A (en) | A kind of carborundum calcium hexaluminate composite refractory | |
| CN101423415A (en) | High chromite brick prepared by colloid impregnation method | |
| CN101935229B (en) | Microporous high chrome brick and preparation method thereof | |
| CN102875128A (en) | Pulverized fuel ash-based heat storage honeycomb ceramic and preparation method thereof | |
| CN110615689A (en) | Coal-based solid waste light high-strength ceramsite and preparation method thereof | |
| CN108003960A (en) | A kind of agglomeration for iron mine biomass fuel and its preparation method and application | |
| CN103319201A (en) | Preparation method of foamed ceramics by using gangue | |
| CN107162604A (en) | A kind of high temperature, which is burnt till, exempts from dipping sliding plate brick and preparation method thereof | |
| CN101962299A (en) | Porous medium burner material and preparation method thereof | |
| CN104478442A (en) | Plugging brick for top opening of water-coal slurry gasification furnace and preparation process thereof | |
| CN102989235B (en) | Filter for filtering molten metals and manufacturing method thereof | |
| CN106830955A (en) | A kind of microwave drying prepares the method for not burning modified high-purity magnesium-aluminum spinel composite brick | |
| CN102515661B (en) | Inorganically combined ceramic fiber board | |
| CN103467124A (en) | Spinel castables for coal water slurry gasification furnace and using method thereof | |
| CN103272561B (en) | Sorbing material and preparation method thereof | |
| CN103936439B (en) | A kind of environment-friendly type height iron influx exempts from baking casting house ramming mass and preparation method thereof | |
| CN106242570A (en) | A kind of production method of heat accumulation graphite product | |
| CN102424586A (en) | Preparation method of SiC fireproof raw material powder | |
| CN107176848B (en) | Densified heat storage iron brick and preparation method thereof | |
| JP5684420B1 (en) | Coal and its manufacturing method | |
| CN101289330A (en) | Method for preparing porous charcoal-ceramic composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090506 |