CN101450866A - Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven - Google Patents
Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven Download PDFInfo
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- CN101450866A CN101450866A CNA200710171769XA CN200710171769A CN101450866A CN 101450866 A CN101450866 A CN 101450866A CN A200710171769X A CNA200710171769X A CN A200710171769XA CN 200710171769 A CN200710171769 A CN 200710171769A CN 101450866 A CN101450866 A CN 101450866A
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- precast block
- dry quenching
- resistant steel
- steel fiber
- fiber reinforcement
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Abstract
The invention relates to a dry quenching furnace, in particular to an abrasion-resistant reinforced precast block for the dry quenching furnace. The abrasion-resistant steel fiber reinforced precast block is formed by roasting the raw materials comprising the following compositions: 4 to 10 percent of cement, 3 to 10 percent of silica fume, 3 to 10 percent of alpha-Al2O3, 5 to 10 percent of SiC, and the balance being refractory aggregates. The precast block has good strength and low wear rate and reduces the maintenance work and the cost.
Description
Technical field
The present invention relates to coke dry quenching furnace, relate in particular to the wear-resisting enhancing pouring precast block that a kind of coke dry quenching furnace gushes.
Background technology
The liner of coke dry quenching furnace body is made up of fire door, load segment, the section of prestoring, flue and cooling section, wherein the cooling section position is one of key position that influences work-ing life, the dry coke quenching cooling section is a high-strength wearable to the basic demand of refractory materials, good thermal shock stability.
Dry coke quenching equipment has all adopted mullite brick (mullite clay brick) as the working lining lining brick at this position both at home and abroad at present.The wear rate of mullite brick is very fast, and this has caused present cooling section maintenance cast frequent, often uses 1 annual overhaul cycle just need pour into a mould maintenance again after the overhaul, so be badly in need of improving the overall wear resistance energy at this position.
Summary of the invention
The present invention is intended to address the deficiencies of the prior art, and a kind of abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven is provided.Prefabricated section intensity provided by the invention is good, and wear rate is low, reduce service work, reduce cost.
The present invention is achieved in that
A kind of abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven is characterized in that, described prefabricated section is formed by the raw material baking of the component that mainly comprises following content:
The cement of 4-10%;
The silicon ash of 3-10%;
α-Al of 3-10%
2O
3
The SiC of 5-10%;
Surplus is a refractory aggregate.
Described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, described refractory aggregate comprise one or more in electric smelting or alundum, alumina, electric smelting or fused mullite, andaluzite, the sillimanite.
Described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, described refractory aggregate are Al
2O
3〉=85% high grade bauxite.
Described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, it comprises that also the Stainless Steel Fibre of 1-5% is as supporting material.
Described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, it also comprises admixture, this admixture is that total amount is no more than 6% water, organic fibre and metallic aluminium.
Described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, the moulding storing temperature of described prefabricated section is 200～1000 ℃.
The present invention adopts high-intensity low cement deposit material to make prefabricated section, introduce the aggregate and the powder of high abrasion in the batching, and it is toughness reinforcing to add Stainless Steel Fibre, thereby has effectively improved intensity, the wear resistance of prefabricated section, introduces SiC simultaneously and has further strengthened wear resistance.The present invention has also adopted Stainless Steel Fibre as supporting material, adding organic fibre, metal A l powder etc., to improve the anti-cracking property of prefabricated section in bake process.
Adopt prefabricated section provided by the invention to build the coke dry quenching furnace cooling section by laying bricks or stones, work and after 1 year gage by drilling is carried out at wear-resisting prefabricated section position, the wear rate that records prefabricated section is 4mm-6mm/, and is corresponding, and now the wear rate with mullite brick is 23mm/.Can reach more than 15 years the work-ing life of calculating cooling section liner working lining in view of the above, and with the present overhaul inspection standard in 10 years furnace life, cooling section can not studied for a second time courses one has flunked in the middle of a generation did not need in furnace life, has both reduced the maintenance amount, has reduced maintenance downtime yet.
Description of drawings
Below, further specify the utility model in conjunction with the accompanying drawings:
The embodiment synoptic diagram that Fig. 1 uses in coke dry quenching furnace for the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
As everyone knows, cement is the major cause that low cement deposit material is produced intensity as a kind of gelling material.Add-on is lower than 4%, and intensity is too low, and wear resistance is bad; Add-on is higher than 10%, and the CaO that cement is brought into is too much, forms more low-melting grey feldspar (2CaOAl2O3SiO2, MP1590 ℃), melilith (CaOAl2O32SiO2, MP1550 ℃) in the use easily.Therefore cement content of the present invention is 4-10%.
When water reducer, silicon ash, α-Al
2O
3Can make mould material obtain low moisture high workability down Deng the existence of super-fine powder, influence very big intensity, the wear resistance of mould material.Silicon ash, α-Al
2O
3Add-on is lower than 3% respectively, and wear resistance is bad; Be higher than 10%, flowability, the intensity that improves mould material be there is no practical significance.Therefore, silicon ash of the present invention, α-Al
2O
3Contain 3-10% separately.
SiC is a kind of good refractory raw material, and the hardness height, swelling property is low, heat conductance good, but costs an arm and a leg.The wear resistance of mould material is further enhanced behind the adding SiC, and helps improving the thermal shock resistance of material.Add-on is lower than 5% and does not have this effect; Be higher than 30%, unreasonable economically, therefore, SiC content of the present invention is 5-10%.
Refractory aggregate in the mould material can be one or more in the refractory raw materials such as electric smelting or alundum, alumina, electric smelting or fused mullite, andaluzite, sillimanite.As being main aggregate with alumina, then pay the utmost attention to the high grade bauxite of the good Al2O3 of sintering 〉=85%, this alumina hardness height, wear resistance are good, and price is also relatively rationally.
Mould material can add Stainless Steel Fibre as the reinforcement material when making prefabricated section, and add-on is 1-5%.Help improving intensity, toughness and the thermal shock resistance of material.Add-on is lower than 1% and does not have this effect; Be higher than 5%, have a strong impact on the flowability of mould material.
Identical with general mould material, also can add total amount during making less than 6% organic fibre, metal A l powder etc., to improve the anti-cracking property of prefabricated section in bake process.
With the about 24h of maintenance behind the raw material casting of the component of described content, the sclerosis back demoulding, the about 24h of natural curing again advances kiln and is baked to 600-900 ℃ and can makes.
Be one embodiment of the present of invention below:
According to the proportioning of table 1, make prefabricated section of the present invention according to wear resistance by GB GB/T18301-2001 test material 900 ℃ of bakings.This method injects directly on specimen surface with abrasive, and the volume that wears away is the wear resistance of material, with cm
3Be unit.Numerical value is high more, and wear resistance is poor more, sees Table 2.
It is 3.50cm3 that wear-resisting as seen from Table 2 prefabricated section is measured wear resistance,
We oppose simultaneously and all change aggregate into flint clay by high grade bauxite than test, and recording wear resistance is 8.49cm3, and visible wear resistance has obviously descended.
If survey wear resistance with used mullite brick sample preparation, up to 11.18cm3.The wear resistance that this brick is described is very poor.
| The raw material name | Adding proportion (%) |
| High grade bauxite 8-0mm | 62 |
| SiC 5-0mm | 20 |
| α-Al 2O 3 | 5.0 |
| The silicon ash | 6.5 |
| Cement | 6.5 |
| Admixture | 0.2 |
| Add water | 5.5 |
The prescription of the wear-resisting prefabricated section of table 1
| Project | Measured value |
| Folding strength (MPa) | |
| 110℃×24h | 15.2 |
| Compressive strength (MPa) | |
| 110℃×24h | 104.6 |
| Volume density (g/cm 3) | |
| 110℃×24h | 2.83 |
| 900 ℃ * 3h of line velocity of variation (%) | -0.1 |
| 1100 ℃ of water-cooleds of thermal shock resistance (inferior) | 34，33，35 |
| Al 2O 3(％) | 60.22 |
| SiC(％) | 16.84 |
| Normal temperature wear resistance * (cm 3) 900℃×6h 650℃×6h | 4.01 3.33 |
The physical and chemical index of the wear-resisting prefabricated section of table 2
Can satisfy the applying working condition of dry coke quenching and the needs of project in order to examine with the wear resisting property of confirmatory experiment material and other use propertieies, we have carried out online local experiment, promptly in annual overhaul, prefabricated section built by laying bricks or stones at inspection manhole shutoff brick place (position that wearing and tearing are maximum) (seeing Fig. 1 and Fig. 2), 1 is prefabricated section of the present invention among the figure, 2 is mould material, and 3 is mullite brick.After using in for some time, pull down manhole shutoff brick, carry out residual thick measurement, investigate its wear rate.
The result is as follows:
Through measuring, the prefabricated section abrasion loss very little, 1 year 3 months average abrasion 6mm, wear rate is lower than mullite brick 28.7mm.
Utilize technical scheme of the present invention that working lining in certain coke dry quenching furnace overhaul is all adopted wear-resisting prefabricatedly build by laying bricks or stones soon of the present invention, after moving 2 months after going into operation because of the urgent blowing out of mechanical means problem, take advantage of this chance that cooling section experiment structure has been carried out hot observation, inner lining structure is intact, the prefabricated section surfacing does not have wearing and tearing substantially.Annual overhaul finishes after 11 months gage by drilling to be carried out at the wear-resisting prefabricated section of this dry coke quenching cooling section position, and calculating wear rate according to the thickness measuring result is 4mm/, is lower than mullite brick 80%.
Claims (6)
1. an abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven is characterized in that, described prefabricated section is formed by the raw material baking of the component that mainly comprises following content:
The cement of 4-10%;
The silicon ash of 3-10%;
α-Al of 3-10%
2O
3
The SiC of 5-10%;
Surplus is a refractory aggregate.
2. abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven according to claim 1 is characterized in that, described refractory aggregate comprises one or more in electric smelting or alundum, alumina, electric smelting or fused mullite, andaluzite, the sillimanite.
3. abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven according to claim 2 is characterized in that, described refractory aggregate is Al
2O
3〉=85% high grade bauxite.
4. according to claim 1,2 or 3 described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, it is characterized in that it comprises that also the Stainless Steel Fibre of 1-5% is as supporting material.
5. according to claim 1,2 or 3 described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, it is characterized in that it also comprises admixture, this admixture is that total amount is no more than 6% water, organic fibre and metallic aluminium.
6. according to claim 1,2 or 3 described abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven, it is characterized in that the moulding storing temperature of described prefabricated section is 200～1000 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710171769XA CN101450866A (en) | 2007-12-04 | 2007-12-04 | Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710171769XA CN101450866A (en) | 2007-12-04 | 2007-12-04 | Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101450866A true CN101450866A (en) | 2009-06-10 |
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ID=40733373
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|---|---|---|---|
| CNA200710171769XA Pending CN101450866A (en) | 2007-12-04 | 2007-12-04 | Abrasion resistant steel fiber reinforcement pouring precast block for coke dry quenching oven |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830713A (en) * | 2010-04-27 | 2010-09-15 | 宜兴市炉顶密封工程有限公司 | Firm can plastic and preparation method thereof |
| CN101665366B (en) * | 2009-10-20 | 2012-02-22 | 瑞泰科技股份有限公司 | Composite abrasion resistant and thermal shock-resistant pouring material |
| CN102503487A (en) * | 2011-11-08 | 2012-06-20 | 山国强 | Prefabricated member for combustor and preparation method for prefabricated member |
| CN102701756A (en) * | 2012-05-10 | 2012-10-03 | 莱芜钢铁集团有限公司 | Bake-free casting material for ladle online roaster cladding lining and preparation method thereof |
| CN103058671A (en) * | 2011-10-19 | 2013-04-24 | 上海宝钢工业检测公司 | Pitch coke rotary kiln furnace lining fireproof castable, composite prefabricated section and preparation method |
| CN103496911A (en) * | 2013-10-11 | 2014-01-08 | 新疆宝安新型建材有限公司 | Method for preparing aerated concrete blocks by using andalusite mineral waste residues |
| CN103819203A (en) * | 2013-10-31 | 2014-05-28 | 江苏顺星耐火科技有限公司 | Mullite high-strength refractory castable |
| CN103979988A (en) * | 2014-05-27 | 2014-08-13 | 北京科技大学 | Sialon bonded andalusite/sillimanite/SiC refractory material and preparation method |
| CN104003737A (en) * | 2014-05-27 | 2014-08-27 | 北京科技大学 | Sialon combined andalusite/SiC composite refractory and preparation method thereof |
| CN104829247A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Acid resistant prefabricated component for carbonization furnace |
| CN107556009A (en) * | 2017-10-13 | 2018-01-09 | 浙江宏博新型建材有限公司 | Refractory brick and preparation method thereof |
| CN108752004A (en) * | 2018-09-10 | 2018-11-06 | 北京东峰兴达耐火材料有限公司 | High-temperature heat-conductive castable |
| CN109704792A (en) * | 2019-01-08 | 2019-05-03 | 山东钢铁股份有限公司 | Method for manufacturing the castable of burnt tank liner and for manufacturing burnt tank liner |
| CN110294623A (en) * | 2019-05-09 | 2019-10-01 | 山东鲁铭高温材料股份有限公司 | High-thermal-shock-resistance wear-resistant prefabricated part for coke dry quenching tank and preparation method thereof |
| CN112250454A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | Novel refractory material for dry quenching |
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2007
- 2007-12-04 CN CNA200710171769XA patent/CN101450866A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665366B (en) * | 2009-10-20 | 2012-02-22 | 瑞泰科技股份有限公司 | Composite abrasion resistant and thermal shock-resistant pouring material |
| CN101830713A (en) * | 2010-04-27 | 2010-09-15 | 宜兴市炉顶密封工程有限公司 | Firm can plastic and preparation method thereof |
| CN101830713B (en) * | 2010-04-27 | 2013-12-11 | 宜兴市炉顶密封工程有限公司 | Firm can plastic and preparation method thereof |
| CN103058671A (en) * | 2011-10-19 | 2013-04-24 | 上海宝钢工业检测公司 | Pitch coke rotary kiln furnace lining fireproof castable, composite prefabricated section and preparation method |
| CN102503487A (en) * | 2011-11-08 | 2012-06-20 | 山国强 | Prefabricated member for combustor and preparation method for prefabricated member |
| CN102701756A (en) * | 2012-05-10 | 2012-10-03 | 莱芜钢铁集团有限公司 | Bake-free casting material for ladle online roaster cladding lining and preparation method thereof |
| CN103496911A (en) * | 2013-10-11 | 2014-01-08 | 新疆宝安新型建材有限公司 | Method for preparing aerated concrete blocks by using andalusite mineral waste residues |
| CN103496911B (en) * | 2013-10-11 | 2015-10-28 | 新疆宝安新型建材有限公司 | A kind of method utilizing andalusite mineral waste slag to prepare air-entrained concrete building block |
| CN103819203A (en) * | 2013-10-31 | 2014-05-28 | 江苏顺星耐火科技有限公司 | Mullite high-strength refractory castable |
| CN103819203B (en) * | 2013-10-31 | 2015-06-24 | 江苏顺星耐火科技有限公司 | Mullite high-strength refractory castable |
| CN103979988B (en) * | 2014-05-27 | 2015-04-22 | 北京科技大学 | Sialon bonded andalusite/sillimanite/SiC refractory material and preparation method |
| CN104003737A (en) * | 2014-05-27 | 2014-08-27 | 北京科技大学 | Sialon combined andalusite/SiC composite refractory and preparation method thereof |
| CN104003737B (en) * | 2014-05-27 | 2015-07-01 | 北京科技大学 | Sialon combined andalusite/SiC composite refractory and preparation method thereof |
| CN103979988A (en) * | 2014-05-27 | 2014-08-13 | 北京科技大学 | Sialon bonded andalusite/sillimanite/SiC refractory material and preparation method |
| CN104829247A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Acid resistant prefabricated component for carbonization furnace |
| CN107556009A (en) * | 2017-10-13 | 2018-01-09 | 浙江宏博新型建材有限公司 | Refractory brick and preparation method thereof |
| CN107556009B (en) * | 2017-10-13 | 2021-02-05 | 山东银山耐火材料有限公司 | Refractory brick and preparation method thereof |
| CN108752004A (en) * | 2018-09-10 | 2018-11-06 | 北京东峰兴达耐火材料有限公司 | High-temperature heat-conductive castable |
| CN109704792A (en) * | 2019-01-08 | 2019-05-03 | 山东钢铁股份有限公司 | Method for manufacturing the castable of burnt tank liner and for manufacturing burnt tank liner |
| CN109704792B (en) * | 2019-01-08 | 2021-08-27 | 山东钢铁股份有限公司 | Casting material for producing coke drum linings and method for producing coke drum linings |
| CN110294623A (en) * | 2019-05-09 | 2019-10-01 | 山东鲁铭高温材料股份有限公司 | High-thermal-shock-resistance wear-resistant prefabricated part for coke dry quenching tank and preparation method thereof |
| CN112250454A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | Novel refractory material for dry quenching |
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Application publication date: 20090610 |