CN105130390A - Low-temperature sintered refractory slurry and preparation method therefor - Google Patents
Low-temperature sintered refractory slurry and preparation method therefor Download PDFInfo
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- CN105130390A CN105130390A CN201510533914.9A CN201510533914A CN105130390A CN 105130390 A CN105130390 A CN 105130390A CN 201510533914 A CN201510533914 A CN 201510533914A CN 105130390 A CN105130390 A CN 105130390A
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Abstract
The present invention discloses a low-temperature sintered refractory slurry and a preparation method therefor. Clay power, andalusite power and hard clay power, and such admixtures as carboxymethyl cellulose, yellow dextrin, boron glass and sodium tripolyphosphate are adopted. The product provided by the present invention solves the problem that traditional refractory slurry in a premix chamber of a hot blast stove cannot be sintered during use. According to the slurry and method provided by the present invention, by adding a burning promoter, the slurry can be sintered at about 800 DEG C, and has better strength during use, exhibits more excellent properties, and prolongs the service life of brick walls.
Description
Technical field
The present invention relates to blast funnace hot blast stove premixer technical field of refractory materials, be specifically related to a kind of low-temperature sintering refractory mortar and preparation method thereof.
Background technology
Blast funnace hot blast stove premixer is the place of hotblast stove coal gas and air pre-mixing, and gas flow rate is high, and wash away and corrode severity, working temperature is low, only has 800 DEG C-1000 DEG C.Clay mud and the andaluzite mud of current use cannot sinter at such a temperature, and intensity is lower.Because premixer is subject to washing away of airflow always, do not have the mud sintered to be washed away erosion by high velocity air and take away, cause gap between wall body brick and brick to increase, brick layer misplaces, and destroys wall body structure, affects hotblast stove work-ing life.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming prior art, a kind of low-temperature sintering refractory mortar that can sinter under hotblast stove premixer working temperature and preparation method thereof is provided.
The present invention is achieved through the following technical solutions:
A kind of low-temperature sintering refractory mortar, it is by clay powder, andaluzite powder and flint clay powder and admixture: carboxymethyl cellulose, yellow starch gum, boron glass and tripoly phosphate sodium STPP are prepared from according to following weight parts proportioning and method:
Proportioning: clay powder is 180 order Guangxi clay powder, aluminium content 33%; Flint clay powder is 180 order Shandong flint clay powder, aluminium content 46%; Andaluzite powder is 180 order south african andalusite powder, aluminium content 57%; Guangxi clay powder 180 order 10-15%, andaluzite powder 180 order 35-45%, flint clay powder 180 order 40-50%, carboxymethyl cellulose additional 0.4%, yellow starch gum additional 1%, boron glass 1% ~ 1.5% and tripoly phosphate sodium STPP 0.2%.
As preferably, also to add boric acid and use as short burning agent, promote that refractory mortar sinters at low temperatures, improve working strength.
As preferably, in proportioning raw materials, the mol ratio of aluminium content and silicone content is 0.6.
Preparation method:
Step one: Guangxi clay powder good for weighing and proportioning, south african andalusite powder and Shandong flint clay powder are put into whipping device, mixes;
Step 2: load weighted admixture is joined in the whipping device of step one, mixes;
Step 3: add the water that mass percent is 30% ~ 35% in the raw material of the step 2 mixed, stir.
Clay powder has extremely important effect in mud construction process, and its water retention property ensures that in mud, moisture not easily runs off in the process of construction, and keep mobility, slow down dry and hard speed, reduces difficulty of construction.In addition, clay powder or the bonding agent of mud, provide the early strength of refractory mortar.The firing temperature of flint clay powder is lower, better can promote low-temperature sintering.Andaluzite powder is the important composition of low temperature refractory mortar, generates mullite under high temperature, greatly strengthens the high-temperature behavior of refractory mortar.
Admixture carboxymethyl cellulose have water retention, and yellow starch gum is additional bonding agent, provides early strength.The Main Function of boron glass is the low-temperature sintering promoting mud.Short burn that mechanism is boron, silicon, aluminium form ternary eutectic phases at 800 DEG C, facilitate the reaction of aluminum oxide and silicon oxide, accelerate to form mullite, thus comparatively early there is higher intensity.In the minimum temperature that boron, silicon, aluminium ternary eutectic point occur, alumina silica ratio is close to 0.6.
Compared with prior art, the invention has the beneficial effects as follows: change the problem that traditional hotblast stove premixer refractory mortar in use cannot sinter.The present invention short burns agent by adding, and just can sinter, have better intensity in use procedure, show more excellent performance at about 800 DEG C, prolongation brick wall work-ing life.
Embodiment
Embodiment 1:
A kind of low-temperature sintering refractory mortar, it is by clay powder, andaluzite powder and flint clay powder and admixture: carboxymethyl cellulose, yellow starch gum, boron glass and tripoly phosphate sodium STPP are prepared from according to following weight parts proportioning and method:
Proportioning: clay powder is 180 order Guangxi clay powder, aluminium content 33%; Flint clay powder is 180 order Shandong flint clay powder, aluminium content 46%; Andaluzite powder is 180 order south african andalusite powder, aluminium content 57%; Guangxi clay powder 180 order 10%, andaluzite powder 180 order 45%, flint clay powder 180 order 50%, carboxymethyl cellulose additional 0.4%, yellow starch gum additional 1%, boron glass 1% and tripoly phosphate sodium STPP 0.2%.The short burning agent used is boric acid, promotes that refractory mortar sinters at low temperatures, improves working strength.In proportioning raw materials, the mol ratio of aluminium content and silicone content is 0.6.
Preparation method:
Step one: Guangxi clay powder good for weighing and proportioning, south african andalusite powder and Shandong flint clay powder are put into whipping device, mixes;
Step 2: load weighted admixture is joined in the whipping device of step one, mixes;
Step 3: add the water that mass percent is 30% in the raw material of the step 2 mixed, stir.
Implementation result:
The present invention is applied to blast funnace hot blast stove premixer, and compared with traditional refractory mortar, low-temperature sintering refractory mortar, at about 800 DEG C sintering, has better intensity at service temperatures, improves hotblast stove work-ing life.
The index that concrete this low-temperature sintering refractory mortar detects in the lab is as follows:
| Al 2O 3Mass percent | 49.65% |
| Strength at normal temperature 110 DEG C × 24h MPa | ≥5.13 |
| High temperature break resistant intensity 800 DEG C × 3h MPa | ≥8.01 |
Embodiment 2:
A kind of low-temperature sintering refractory mortar, it is by clay powder, andaluzite powder and flint clay powder and admixture: carboxymethyl cellulose, yellow starch gum, boron glass and tripoly phosphate sodium STPP are prepared from according to following weight parts proportioning and method:
Proportioning: clay powder is 180 order Guangxi clay powder, aluminium content 33%; Flint clay powder is 180 order Shandong flint clay powder, aluminium content 46%; Andaluzite powder is 180 order south african andalusite powder, aluminium content 57%; Guangxi clay powder 180 order 15%, andaluzite powder 180 order 35%, flint clay powder 180 order 40%, carboxymethyl cellulose additional 0.4%, yellow starch gum additional 1%, boron glass 1.5% and tripoly phosphate sodium STPP 0.2%.The short burning agent used is boric acid, promotes that refractory mortar sinters at low temperatures, improves working strength.In proportioning raw materials, the mol ratio of aluminium content and silicone content is 0.6.
Preparation method is with embodiment 1.
Implementation result:
The present invention is applied to blast funnace hot blast stove premixer, and compared with traditional refractory mortar, low-temperature sintering refractory mortar, at about 800 DEG C sintering, has better intensity at service temperatures, improves hotblast stove work-ing life.
The index that concrete this low-temperature sintering refractory mortar detects in the lab is as follows:
| Al 2O 3Mass percent | 49.88% |
| Strength at normal temperature 110 DEG C × 24h MPa | ≥6.38 |
| High temperature break resistant intensity 800 DEG C × 3h MPa | ≥9.15 |
Can find out compared with Conventional mud from above-described embodiment 1, embodiment 2,800 DEG C of high temperature break resistant intensities of low-temperature sintering refractory mortar have great lifting.This illustrates low-temperature sintering refractory mortar, has now started sintering, under premixer's working conditions, has had higher intensity, can reach better effect.
The foregoing is only two kinds of specific embodiments of the present invention, but embodiments of the invention are not limited thereto, any those skilled in the art is in the field of the invention, and the change done or modification are all encompassed within protection scope of the present invention.
Claims (4)
1. a low-temperature sintering refractory mortar, it is characterized in that: it is by clay powder, andaluzite powder, flint clay powder and admixture: carboxymethyl cellulose, yellow starch gum, boron glass and tripoly phosphate sodium STPP are formulated according to following weight parts proportioning: clay powder is 180 order Guangxi clay powder, aluminium content 33%; Flint clay powder is 180 order Shandong flint clay powder, aluminium content 46%; Andaluzite powder is 180 order south african andalusite powder, aluminium content 57%; Guangxi clay powder 180 order 10-15%, andaluzite powder 180 order 35-45%, flint clay powder 180 order 40-50%, carboxymethyl cellulose additional 0.4%, yellow starch gum additional 1%, boron glass 1% ~ 1.5% and tripoly phosphate sodium STPP 0.2%.
2. a kind of low-temperature sintering refractory mortar according to claim 1, is characterized in that: also will add boric acid and use as short burning agent.
3. a kind of low-temperature sintering refractory mortar according to claim 1, is characterized in that: in proportioning raw materials, the mol ratio of aluminium content and silicone content is 0.6.
4. the preparation method of a kind of low-temperature sintering refractory mortar according to claim 1, is characterized in that: it comprises the steps:
Step one: Guangxi clay powder good for weighing and proportioning, south african andalusite powder and Shandong flint clay powder are put into whipping device, mixes;
Step 2: load weighted admixture is joined in the whipping device of step one, mixes;
Step 3: add the water that mass percent is 30% ~ 35% in the raw material of the step 2 mixed, stir.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510533914.9A CN105130390A (en) | 2015-08-27 | 2015-08-27 | Low-temperature sintered refractory slurry and preparation method therefor |
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| CN201510533914.9A CN105130390A (en) | 2015-08-27 | 2015-08-27 | Low-temperature sintered refractory slurry and preparation method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943166A (en) * | 2021-11-29 | 2022-01-18 | 郑州安耐克实业有限公司 | High-strength clayey refractory mortar for hot blast furnace and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182228A (en) * | 2007-11-21 | 2008-05-21 | 攀钢集团攀枝花钢铁研究院 | Novel use of sodium silicate solution or phosphoric acid solution and fireclay |
| CN102515806A (en) * | 2011-12-26 | 2012-06-27 | 上海利尔耐火材料有限公司 | Wet refractory mortar and preparation method thereof |
| CN102807377A (en) * | 2011-06-01 | 2012-12-05 | 河南鑫诚耐火材料股份有限公司 | Method for manufacturing refractory clay for constructing refractory bricks of flame path walls of baking furnaces |
| CN103553658A (en) * | 2013-10-15 | 2014-02-05 | 浙江自立股份有限公司 | Impermeable brick for aluminum reduction cell and preparation method thereof |
-
2015
- 2015-08-27 CN CN201510533914.9A patent/CN105130390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182228A (en) * | 2007-11-21 | 2008-05-21 | 攀钢集团攀枝花钢铁研究院 | Novel use of sodium silicate solution or phosphoric acid solution and fireclay |
| CN102807377A (en) * | 2011-06-01 | 2012-12-05 | 河南鑫诚耐火材料股份有限公司 | Method for manufacturing refractory clay for constructing refractory bricks of flame path walls of baking furnaces |
| CN102515806A (en) * | 2011-12-26 | 2012-06-27 | 上海利尔耐火材料有限公司 | Wet refractory mortar and preparation method thereof |
| CN103553658A (en) * | 2013-10-15 | 2014-02-05 | 浙江自立股份有限公司 | Impermeable brick for aluminum reduction cell and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943166A (en) * | 2021-11-29 | 2022-01-18 | 郑州安耐克实业有限公司 | High-strength clayey refractory mortar for hot blast furnace and preparation method thereof |
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Application publication date: 20151209 |
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