CN109748594A - A kind of coke dry quenching furnace bracket refractory protection material and preparation method thereof - Google Patents
A kind of coke dry quenching furnace bracket refractory protection material and preparation method thereof Download PDFInfo
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- CN109748594A CN109748594A CN201910184414.7A CN201910184414A CN109748594A CN 109748594 A CN109748594 A CN 109748594A CN 201910184414 A CN201910184414 A CN 201910184414A CN 109748594 A CN109748594 A CN 109748594A
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- dry quenching
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Abstract
The invention discloses a kind of coke dry quenching furnace bracket refractory protection materials and preparation method thereof; described its constitutive material of refractory protection material and weight percent are as follows: mullite 20%~30%, SiC micro mist 30%~45%, Si3N4 micro mist 15%~20%, metallic silicon power 1%~3%, zirconium oxide 2%~5%, bonding agent 2%~6%, remaining is andalusite.The problems such as refractory protection material of the invention is smeared outside benefit to coke dry quenching furnace bracket, bracket cracking, breakage can be effectively prevented, extends the service life of bracket, plays a very good protection to bracket.
Description
Technical field:
The invention belongs to coke dry quenching furnace bracket field of material technology, in particular to a kind of coke dry quenching furnace bracket refractory protection material
Material and preparation method thereof.
Background technique:
Big event-dry coke quenching as coking process energy-saving and emission-reduction has been widely used at home, with domestic enlargement
The popularization and application of dry coke quenching, the development and research of Dry Quenching Technology develop gradually at industrial hot spot in particular for Dry Quenching Technology
With the breakage of material is even more problem anxious to be resolved, main part of the dry coke quenching furnace body as dry coke quenching in coke dry quenching furnace in practical application
Position, importance are self-evident.The chute area (bracket) of coke dry quenching furnace annular passage must directly be contacted with high-temperature coke for a long time,
It is also easy to produce expanded by heating and abrasion, so that chute area deforms, splits, therefore needs periodically repair, more chute area (bracket)
It changes, and chute area (bracket) is repaired, replacement cost is higher, complex procedures, therefore a floor is arranged outside at chute area (bracket) and protects
Material becomes inevitable.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention:
The object of the present invention is to provide a kind of coke dry quenching furnace bracket refractory protection materials and preparation method thereof, thus gram
Take above-mentioned defect in the prior art.
To achieve the above object, The technical solution adopted by the invention is as follows: a kind of coke dry quenching furnace bracket refractory protection material,
Its constitutive material and weight percent are as follows: mullite 20%~30%, SiC micro mist 30%~45%, Si3N4 micro mist 15%~
20%, metallic silicon power 5%~10%, zirconium oxide 2%~5%, bonding agent 2%~6%, remaining is andalusite.
The mullite that the mullite and partial size that the mullite is 0.05mm~2mm by partial size are 2.1mm~5mm forms,
Both described weight ratio is 1:1.5~1:3.
Content >=75% of Al2O3 in the mullite.
The andalusite that the andalusite and partial size that the andalusite is 0.02~3mm by partial size are 5~10mm forms, and described two
The weight ratio of person is 1:5~1:10.
Partial size≤15 μm of the SiC micro mist.
The partial size of the Si3N4 micro mist is 0.2~0.3mm.
The partial size of the metallic silicon power is 100~500nm.
The partial size of the zirconium oxide is 50~100nm.
The bonding agent is calcium silicate cement, barium silicate cement, aluminum sulfate, portland cement, aluminate cement, waterglass
One such or two or more mixture.
A kind of preparation method of coke dry quenching furnace bracket refractory protection material, the refractory protection material in accordance with the following methods into
Row mixing:
1) mullite and andalusite are put into high speed ball mill and are ground and is uniformly mixed, Ball-milling Time is 20~30
Minute, the revolving speed of ball mill is 35~38r/min；
2) SiC micro mist and Si3N4 micro mist point 2~3 times are added in high speed ball mill and are uniformly mixed, Ball-milling Time is
100~300 minutes, the revolving speed of ball mill was 30~35r/min；
3) metallic silicon power, zirconium oxide and bonding agent are uniformly dispersed using homogenizer, in homogenizer pressure be 80~
120Mpa, temperature are 50~80 DEG C；
The mixture of step 3) is slowly added into high speed ball mill and is mixed, refractory protection finished material is obtained.
It is using the beneficial effect of technical solution of the present invention:
Coke dry quenching furnace bracket refractory protection material of the invention is based on mullite and andalusite, and mullite and red column
Stone is all made of the mixing material of two kinds of partial sizes, and is added to SiC micro mist and Si3N4 micro mist, can be improved protection materials fire resisting,
High-temperature pressure-proof, high temperature fracture resistance, reduce reheating linear change rate on reheating, and the addition of metallic silicon power and zirconium oxide facilitates refractory protection material
Material forms fine and close protective layer；SiC micro mist and Si3N4 is added after first passing through ball mill mixing in mullite and andalusite in batches again
Micro mist, metallic silicon power, zirconium oxide and bonding agent add what ball mill and other raw materials were uniformly mixed after homogenizer mixes
Mode enables to the mixing of refractory protection material more uniform；Refractory protection material of the invention is smeared into benefit to coke dry quenching furnace bracket
Outside, the problems such as bracket cracking, breakage can be effectively prevented, extends the service life of bracket, plays protection well to bracket and makees
With.
Specific embodiment:
The present invention will be further described combined with specific embodiments below.
Embodiment 1
A kind of coke dry quenching furnace bracket refractory protection material, constitutive material and weight percent are as follows: mullite 20%,
SiC micro mist 30%, Si3N4 micro mist 15%, metallic silicon power 1%, zirconium oxide 2%, bonding agent 2%, remaining is andalusite.
The mullite that the mullite and partial size that the mullite is 0.05mm~2mm by partial size are 2.1mm~5mm forms,
Both described weight ratio is 1:1.5；Content >=75% of Al2O3 in the mullite.
The andalusite that the andalusite and partial size that the andalusite is 0.02~3mm by partial size are 5~10mm forms, and described two
The weight ratio of person is 1:5.
Partial size≤15 μm of the SiC micro mist.
The partial size of the Si3N4 micro mist is 0.2~0.3mm.
The partial size of the metallic silicon power is 150nm；The partial size of the zirconium oxide is 50nm.
The bonding agent is the mixture of calcium silicate cement and barium silicate cement.
A kind of preparation method of coke dry quenching furnace bracket refractory protection material, comprising the following steps:
1) mullite and andalusite are put into high speed ball mill and are ground and is uniformly mixed, Ball-milling Time is 20 points
Clock, the revolving speed of ball mill are 35r/min；2) SiC micro mist and Si3N4 micro mist point 2 times are added in high speed ball mill and are mixed
Even, Ball-milling Time is 100 minutes, and the revolving speed of ball mill is 30r/min；3) use homogenizer by metallic silicon power, zirconium oxide and knot
Mixture is uniformly dispersed, and pressure is 80Mpa in homogenizer, and temperature is 50 DEG C；The mixture of step 3) is slowly added into clipping the ball
It is mixed in grinding machine, obtains refractory protection finished material.
Embodiment 2
A kind of coke dry quenching furnace bracket refractory protection material, constitutive material and weight percent are as follows: mullite 25%,
SiC micro mist 35%, Si3N4 micro mist 18%, metallic silicon power 2%, zirconium oxide 3%, bonding agent 4%, remaining is andalusite.
The mullite that the mullite and partial size that the mullite is 0.05mm~2mm by partial size are 2.1mm~5mm forms,
Both described weight ratio is 1:2；Content >=75% of Al2O3 in the mullite.
The andalusite that the andalusite and partial size that the andalusite is 0.02~3mm by partial size are 5~10mm forms, and described two
The weight ratio of person is 1:8.
Partial size≤15 μm of the SiC micro mist.
The partial size of the Si3N4 micro mist is 0.2~0.3mm.
The partial size of the metallic silicon power is 200nm.
The partial size of the zirconium oxide is 80nm.
The bonding agent is the mixture of calcium silicate cement and waterglass.
A kind of preparation method of coke dry quenching furnace bracket refractory protection material, comprising the following steps:
1) mullite and andalusite are put into high speed ball mill and are ground and is uniformly mixed, Ball-milling Time is 25 points
Clock, the revolving speed of ball mill are 36r/min；2) SiC micro mist and Si3N4 micro mist point 2 times are added in high speed ball mill and are mixed
Even, Ball-milling Time is 200 minutes, and the revolving speed of ball mill is 32r/min；3) use homogenizer by metallic silicon power, zirconium oxide and knot
Mixture is uniformly dispersed, and pressure is 100Mpa in homogenizer, and temperature is 60 DEG C；The mixture of step 3) is slowly added into clipping the ball
It is mixed in grinding machine, obtains refractory protection finished material.
Embodiment 3
A kind of coke dry quenching furnace bracket refractory protection material, constitutive material and weight percent are as follows: mullite 30%,
SiC micro mist 45%, Si3N4 micro mist 20%, metallic silicon power 3%, zirconium oxide 5%, bonding agent 6%, remaining is andalusite.
The mullite that the mullite and partial size that the mullite is 0.05mm~2mm by partial size are 2.1mm~5mm forms,
Both described weight ratio is 1:3；Content >=75% of Al2O3 in the mullite.
The andalusite that the andalusite and partial size that the andalusite is 0.02~3mm by partial size are 5~10mm forms, and described two
The weight ratio of person is 1:8.
Partial size≤15 μm of the SiC micro mist.
The partial size of the Si3N4 micro mist is 0.2~0.3mm.
The partial size of the metallic silicon power is 500nm.
The partial size of the zirconium oxide is 100nm.
The bonding agent is the mixture of calcium silicate cement, barium silicate cement, aluminum sulfate.
A kind of preparation method of coke dry quenching furnace bracket refractory protection material, comprising the following steps:
1) mullite and andalusite are put into high speed ball mill and are ground and is uniformly mixed, Ball-milling Time is 30 points
Clock, the revolving speed of ball mill are 38r/min；2) SiC micro mist and Si3N4 micro mist are added three times in high speed ball mill and are mixed
Even, Ball-milling Time is 300 minutes, and the revolving speed of ball mill is 35r/min；3) use homogenizer by metallic silicon power, zirconium oxide and knot
Mixture is uniformly dispersed, and pressure is 120Mpa in homogenizer, and temperature is 80 DEG C；The mixture of step 3) is slowly added into clipping the ball
It is mixed in grinding machine, obtains refractory protection finished material.
The refractory protection material of embodiment 1, embodiment 2 and embodiment 3 is tested for the property, test result is as follows table:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Refractoriness (DEG C) | 1750 | 1800 | 1850 |
| Bulk density (g/cm3) | 3.8 | 3.4 | 3.6 |
| Crushing strength under high temperature (Mpa) | 125 | 128 | 126 |
| High temperature break resistant intensity (Mpa) | 12.8 | 12.5 | 12.8 |
| Reheating linear change rate on reheating (%) | -0.2 | -0.1 | -0.3 |
Wherein refractoriness test is tested according to GB/T7322~1997；Bulk density is tested according to YB/T5200-
1993 are tested, and are needed before test by pre-processing for 24 hours at 110 DEG C；Crushing strength under high temperature test is carried out according to YB5201-1993
Test is handled before testing by 3h at 1350 DEG C；High temperature break resistant intensity test is tested according to YB5201-1993, before test
It is handled by 3h at 1350 DEG C；Reheating linear change rate on reheating test is tested according to YB5203-1993, by 1350 DEG C before testing
3h processing.
Coke dry quenching furnace bracket refractory protection material of the invention is based on mullite and andalusite, and mullite and red column
Stone is all made of the mixing material of two kinds of partial sizes, and is added to SiC micro mist and Si3N4 micro mist, can be improved protection materials fire resisting,
High-temperature pressure-proof, high temperature fracture resistance, reduce reheating linear change rate on reheating, and the addition of metallic silicon power and zirconium oxide facilitates refractory protection material
Material forms fine and close protective layer；SiC micro mist and Si3N4 is added after first passing through ball mill mixing in mullite and andalusite in batches again
Micro mist, metallic silicon power, zirconium oxide and bonding agent add what ball mill and other raw materials were uniformly mixed after homogenizer mixes
Mode enables to the mixing of refractory protection material more uniform；Refractory protection material of the invention is smeared into benefit to coke dry quenching furnace bracket
Outside, the problems such as bracket cracking, breakage can be effectively prevented, extends the service life of bracket, plays protection well to bracket and makees
With.
Although above-described embodiment is described in detail technical solution of the present invention, technical side of the invention
Case is not limited to above embodiments, in the case where not departing from thought and objective of the invention, to technical solution of the present invention institute
Any change done will fall into claims of the present invention limited range.
Claims (10)
1. a kind of coke dry quenching furnace bracket refractory protection material, it is characterised in that: its constitutive material and weight percent are as follows: Mo Lai
Stone 20%~30%, SiC micro mist 30%~45%, Si3N4Micro mist 15%~20%, metallic silicon power 1%~3%, zirconium oxide 2%
~5%, bonding agent 2%~6%, remaining is andalusite.
2. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the mullite by
The mullite composition that the mullite and partial size that partial size is 0.05mm~2mm are 2.1mm~5mm, both described weight ratio is 1:
1.5~1:3.
3. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: in the mullite
Al2O3Content >=75%.
4. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the andalusite by
The andalusite composition that the andalusite and partial size that partial size is 0.02~3mm are 5~10mm, both described weight ratio is 1:5~1:
10。
5. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the SiC micro mist
Partial size≤15 μm.
6. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the Si3N4Micro mist
Partial size be 0.2~0.3mm.
7. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the metallic silicon power
Partial size be 100~500nm.
8. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the zirconium oxide
Partial size is 50~100nm.
9. a kind of coke dry quenching furnace bracket refractory protection material according to claim 1, it is characterised in that: the bonding agent is
Calcium silicate cement, barium silicate cement, aluminum sulfate, portland cement, aluminate cement, waterglass it is one such or two kinds with
On mixture.
10. a kind of preparation method of coke dry quenching furnace bracket refractory protection material, it is characterised in that: the following steps are included:
1) mullite and andalusite are put into high speed ball mill and are ground and is uniformly mixed, Ball-milling Time is 20~30 points
Clock, the revolving speed of ball mill are 35~38r/min；
2) by SiC micro mist and Si3N4It being added in high speed ball mill for micro mist points 2~3 times and to be uniformly mixed, Ball-milling Time is 100~
300 minutes, the revolving speed of ball mill was 30~35r/min；
3) metallic silicon power, zirconium oxide and bonding agent are uniformly dispersed using homogenizer, pressure is 80~120Mpa, temperature in homogenizer
Degree is 50~80 DEG C；
4) mixture of step 3) is slowly added into high speed ball mill and is mixed, obtain refractory protection finished material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548164A (en) * | 2020-05-19 | 2020-08-18 | 中钢集团洛阳耐火材料研究院有限公司 | Continuous self-toughening nitride-bonded silicon carbide refractory material |
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| CN111548164A (en) * | 2020-05-19 | 2020-08-18 | 中钢集团洛阳耐火材料研究院有限公司 | Continuous self-toughening nitride-bonded silicon carbide refractory material |
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