CN104774017A - Mullite high-temperature clay and preparation method thereof - Google Patents
Mullite high-temperature clay and preparation method thereof Download PDFInfo
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- CN104774017A CN104774017A CN201410030187.XA CN201410030187A CN104774017A CN 104774017 A CN104774017 A CN 104774017A CN 201410030187 A CN201410030187 A CN 201410030187A CN 104774017 A CN104774017 A CN 104774017A
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Abstract
The invention discloses a preparation method of mullite high-temperature clay for cracking furnace and catalytic cracking furnace flame path turning building firebrick and brickwork joint. The preparation method comprises the following steps of weighing 60-64 parts by weight of dry high-quality alumina powder with Al2O3 content greater than or equal to 80% and granularity of less than or equal to 0.088m, 15-25 parts by weight of mullite powder with granularity of less than or equal to 0.043m, 6-8 parts by weight of alpha-Al2O3 ultrafine powder with granularity of less than or equal to 5 microns, 5 parts by weight of silicon oxide ultrafine powder with granularity of less than or equal to 5 microns, and 10 parts by weight of high-quality clay fine powder with granularity of less than or equal to 0.088mm, adding 6-4 parts by weight of a phosphoric acid dilute solution with a concentration of 40-42.5% into 94-96 parts by weight of a composite binder aluminum sulfate solution with specific gravity of 1.25-1.30g/cm<3>, carrying out full stirring for 8-10min, slowly adding the powder into the prepared binder in a barrel according to a weight ratio of the powder to the prepared binder of 10: 20, carrying out stirring for greater than or equal to 6min so that the materials in the barrel are uniform, covering the mixed material, and storing the mixed material in a warehouse.
Description
Technical field
The invention belongs to building materials field high temperature clay, relate to one and build brick body seam mullite high temperature clay by laying bricks or stones for petrochemical industry pyrolyzer flue wall corner.
Background technology
At present, petrochemical complex pyrolyzer, catalytic cracker quirk turn round temperatures as high about 1500 DEG C, when needing by building refractory brick by laying bricks or stones, use high temperature resistant clay between brickwork joint.But, by high temperature resistant clay formulation challenges, occur that brickwork joint loosens, come off under the continuous shock action of high temperature gas flow, cause the impaired destruction of quirk brickwork joint, notch distortion under flame path wall body, cause stove flue wall to decline work-ing life.
Summary of the invention
The object of the invention is to solve existing petrochemical cracker stove and corner, catalytic cracking stove fire road, build brick body brickwork joint by laying bricks or stones and loosen, flue wall is short for work-ing life, provides a kind of mullite high temperature clay.
The technical scheme realizing the object of the invention is: a kind of be used for cracking furnace, catalytic cracking stove (high temperature position laying fireproof bricks with) quirk fire-resistant place of turning round builds the mullite high temperature clay of brick body brickwork joint by laying bricks or stones, by weight, its formula consists of:
(1) dry mash preparation:
(2) combined binder preparation:
Alum liquor (proportion 1.25 ~ 1.30g/cm
3) 94 ~ 96 parts;
Phosphoric acid diluting soln (concentration 40 ~ 42.5%) 6 ~ 4 parts;
The preparation method of mullite high temperature clay described above, according to formula regulation ratio, accurately takes various dry mash, drops in stirrer and fully stir 8 ~ 10 minutes, for subsequent use; What then powder for subsequent use is slowly added to barreled prepares in bonding agent, powder for subsequent use with prepare bonding agent weight ratio and be: 10: 20; Be no less than 6 minutes by mechanical stirring, make mixing of materials powder evenly rear covered and enclosed in bucket, after being stained with product indicia, enter storehouse for subsequent use.
The present invention has outstanding substantive distinguishing features and marked improvement compared with currently available products.
1) mullite high temperature clay of the present invention, resistance to elevated temperatures is excellent, and patient rapid heat cycle is better, and the micro-expansion when high-temperature area mullitization, can prevent brickwork joint shrinkage cracking, brick body from loosening.
2) the present invention is except introducing mullite raw material as except nucleus transformation effect, and the content of aluminium sesquioxide, in 70 ~ 73% regions, is also conducive to mullite crystal conversion under high temperature, thus improves greatly resistant to elevated temperatures performance of the present invention.
3) the present invention has been applied to alum liquor+a small amount of phosphoric acid solution, can improve greatly temperature, hot strength in the present invention, thus improve the bulk strength of building body by laying bricks or stones.Extend work-ing life, life cycle is long.
Embodiment
Embodiment 1: one is used for cracking furnace and/or fire-resistant brickwork joint mullite high temperature clay is built in corner, catalytic cracking stove fire road, and formula consists of:
(2) combined binder preparation:
Alum liquor (proportion 1.25 ~ 1.30g/cm
3) 94 ~ 96kg;
Phosphoric acid diluting soln (concentration 40 ~ 42.5%) 6 ~ 4kg;
Embodiment 2: plant and be used for cracking furnace and/or corner, catalytic cracking stove fire road and build fire-resistant brickwork joint mullite high temperature clay, preparation method, with parts by weight, accurately take according to lower surface compositions regulation ratio
Various dry mash will be taken, drop in stirrer and fully stir 8 ~ 10 minutes, according to the packed bag of 10kg/, for subsequent use; Then powder for subsequent use is slowly added in the bonding agent prepared of 20kg/ barreled bucket, by stirring rod, artificial or mechanical stirring is no less than 6 minutes, and covered and enclosed after making in bucket mixing of materials powder evenly, after being stained with product indicia, warehouse-in is placed on rainproof antifreeze place, preservation period six months.
End-use: mullite high temperature clay can be used for the high temperature resistant use of laying bricks of high-temperature furnace body high temperature position.Refractory brick and brickwork joint are built in particularly suitable petrochemical industry cracking furnace and/or corner, catalytic cracking stove fire road.
Product physical and chemical index:
The trade mark: JMF 1 maximum operation (service) temperature DEG C 1500.
Color: grey.
Proportion: g/cm
31.4 ~ 1.6.
Al
2O
3：％ 70～73。
Fe
2O
3：％ ≤2.0。
Linear shrinkage (1500 DEG C/3h) %≤2.0.
Folding strength MPa 110 DEG C/24h >=6.5.
1500℃／3h ≥15.0。
Characteristic: thermoset.
Claims (2)
1. build a brickwork joint mullite high temperature clay by laying bricks or stones for cracking furnace, catalytic cracking stove (high temperature position laying fireproof bricks with) quirk fire-resistant place of turning round, with parts by weight, its formula consists of:
(1) dry mash preparation:
(2) combined binder preparation:
Alum liquor (proportion 1.25 ~ 1.30g/cm
394 ~ 96 parts;
Phosphoric acid diluting soln (concentration 40 ~ 42.5%) 6 ~ 4 parts.
2. the preparation method of mullite high temperature clay described above, according to formula regulation ratio, accurately takes various dry mash, drops in stirrer and fully stir 8 ~ 10 minutes, for subsequent use; What then powder for subsequent use is slowly added to barreled prepares in bonding agent, powder for subsequent use with prepare bonding agent weight ratio and be: 10: 20; By stirring rod, artificial or mechanical stirring is no less than 6 minutes, and covered and enclosed after making in bucket mixing of materials powder evenly, after being stained with product indicia, enters storehouse for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030187.XA CN104774017A (en) | 2014-01-14 | 2014-01-14 | Mullite high-temperature clay and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030187.XA CN104774017A (en) | 2014-01-14 | 2014-01-14 | Mullite high-temperature clay and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104774017A true CN104774017A (en) | 2015-07-15 |
Family
ID=53615827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410030187.XA Pending CN104774017A (en) | 2014-01-14 | 2014-01-14 | Mullite high-temperature clay and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104774017A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174981A (en) * | 2015-09-09 | 2015-12-23 | 郑州瑞泰耐火科技有限公司 | Low thermal-conductivity high temperature glue and preparation method thereof |
| CN105198454A (en) * | 2015-09-09 | 2015-12-30 | 郑州瑞泰耐火科技有限公司 | Low-heat conduction insulating brick and preparation method thereof |
| CN105541356A (en) * | 2015-12-25 | 2016-05-04 | 山东鲁阳节能材料股份有限公司 | High-temperature-resistant cement and preparation method for same |
| CN115231912A (en) * | 2022-08-18 | 2022-10-25 | 中钢集团洛阳耐火材料研究院有限公司 | Low-iron gas hard fire clay for liner of propane dehydrogenation reactor |
-
2014
- 2014-01-14 CN CN201410030187.XA patent/CN104774017A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174981A (en) * | 2015-09-09 | 2015-12-23 | 郑州瑞泰耐火科技有限公司 | Low thermal-conductivity high temperature glue and preparation method thereof |
| CN105198454A (en) * | 2015-09-09 | 2015-12-30 | 郑州瑞泰耐火科技有限公司 | Low-heat conduction insulating brick and preparation method thereof |
| CN105541356A (en) * | 2015-12-25 | 2016-05-04 | 山东鲁阳节能材料股份有限公司 | High-temperature-resistant cement and preparation method for same |
| CN115231912A (en) * | 2022-08-18 | 2022-10-25 | 中钢集团洛阳耐火材料研究院有限公司 | Low-iron gas hard fire clay for liner of propane dehydrogenation reactor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150715 |