CN104909779A - Mullite refractory coating material - Google Patents
Mullite refractory coating material Download PDFInfo
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- CN104909779A CN104909779A CN201510356600.6A CN201510356600A CN104909779A CN 104909779 A CN104909779 A CN 104909779A CN 201510356600 A CN201510356600 A CN 201510356600A CN 104909779 A CN104909779 A CN 104909779A
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Abstract
The invention relates to a mullite refractory coating material and in particular relates to a mullite light refractory coating material. The mullite refractory coating material comprises the following components in parts by weight: 30-40 parts of 3-1mm mullite aggregate, 5-15 parts of 1-0mm flint clay aggregate, 10-20 parts of 0.5-0mm flint clay aggregate, 11-21 parts of mullite powder, 4-6 parts of modified Faku soil, 5-7 parts of aluminate cement, 1-3 parts of 1-5mu m mullite whiskers, 1-3 parts of 1-5mu m titanium nitride whiskers, 3-5 parts of additives and additional alumina sol accounting for 10-18% of the total materials by weight. The mullite refractory coating material has good coating property and sintering property and short curing time and can be rapidly baked and used. After undergoing high-temperature thermal treatment, the coating material can be sintered together with furnace linings, has high strength and good thermal shock resistance, is not easy to crack, has good repair effects and can achieve the effect of effectively prolonging the service lives of high-temperature furnaces.
Description
Technical field
The present invention relates to a kind of porzite flame-proof coating, specifically a kind of mullite light-weight refractory coating.
Background technology
High temperature kiln furnace lining is commonly used light-weight mullite and is built working lining by laying bricks or stones, reaches not only high temperature resistant but also heat insulating, can realize again heat resistanceheat resistant simultaneously and peel off, but it is expensive, and disposable and maintain and replace drops into very large.Light-weight mullite belongs to lightweight refractory, its intensity is not as compact refractory material, and therefore in use, light-weight mullite refractory lining often ftractures by the product that external blow such as kiln car or kiln car burn clashes into, falls block, cause kiln to dispel the heat to aggravate, affect kiln sintering effect.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides one and smear conveniently, coking property is good, and curing time is short, the fire-resistant coating that can drop into baking fast and use, this material outstanding feature is exactly that application property is good, smears conveniently, coking property is good, and curing time is short, can drop into baking fast and use.At high temperature, this coating can together with old lining sintering, and bonding strength is high, difficult drop-off.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of porzite flame-proof coating, it is characterized in that it comprises the component of following parts by weight: 3-1mm mullite aggregate 30-40 part, 1-0mm flint clay aggregate 5-15 part, 0.5-0mm flint clay aggregate 10-20 part, mullite powder 11-21 part, modification Faku County soil 4-6 part, aluminate cement 5-7 part, mullite 1-5 μm whisker 1-3 part, titanium nitride 1-5 μm whisker 1-3 part, additive 3-5 part, the additional Alumina gel accounting for above-mentioned gross weight 10-18%; Additive is magnesium sulfate calcium potassium powder, silicon powder and carbonic acid zirconium powder, and its weight ratio is 1:1:1; The density of Alumina gel is 1.1g/ml, PH is 4.5.
In above-mentioned batching, described Alumina gel such as to can be replaced at the silicon sol of weight.
The aluminium content of described aluminate cement is more than 50%.
Described modification Faku County soil the first step is that Faku County's soil is obtained product 1 700 DEG C of insulations after 10 hours, then by weight 50:1, product 1 is mixed evenly with polyvinyl alcohol, is modification Faku County soil.
Beneficial effect: a kind of porzite flame-proof coating of the present invention, have and have good workability, easy to apply, coking property is good, and curing time is short, can drop into baking fast and use.After high-temperature heat treatment, this coating can together with old lining sintering, and intensity is high, good thermal shock, not easy to crack, and repair efficiency is good, and greatly can improve the work-ing life of high temperature kiln, after a maintenance, work-ing life improves more than 30%.
Embodiment
For making technical problem to be solved by this invention, the technical scheme taked, the technique effect easy to understand obtained, existing the present invention is further illustrated in conjunction with the embodiments.
Embodiment 1
A kind of porzite flame-proof coating, it comprises the component of following parts by weight: 3-1mm mullite aggregate 30-40 part, 1-0mm flint clay aggregate 5-15 part, 0.5-0mm flint clay aggregate 10-20 part, mullite powder 11-21 part, modification Faku County soil 4-6 part, aluminate cement 5-7 part, mullite 1-5 μm whisker 1-3 part, titanium nitride 1-5 μm whisker 1-3 part, additive 3-5 part, the additional Alumina gel accounting for above-mentioned gross weight 10-18%; Additive is magnesium sulfate calcium potassium powder, silicon powder and carbonic acid zirconium powder, and its weight ratio is 1:1:1; The density of Alumina gel is 1.1g/ml, PH is 4.5.In above-mentioned batching, described Alumina gel such as to can be replaced at the silicon sol of weight.Described aluminate cement aluminium content is more than 50%.Prepare burden according to above-mentioned formula, first be dry mixed evenly in stirrer, then the Alumina gel of 10-18% is added, discharging after wet mixing evenly and with mud smear, the instrument such as cleaver smeared to former furnace lining crack or pit, then manual compaction, floating, through natural curing after 5 hours, high temperature kiln can put into production by normal temperature increasing schedule.Extend more than 30 % work-ing life, high by 20% when heat insulating effect is not repaired.
Embodiment 2
A kind of porzite flame-proof coating, it comprises the component of following parts by weight: 3-1mm mullite aggregate 40 parts, 7 parts, 1-0mm flint clay aggregate, 10 parts, 0.5-0mm flint clay aggregate, mullite powder 21 parts, 4 parts, modification Faku County soil, aluminate cement 7 parts, mullite 1-5 μm whisker 3 parts, titanium nitride 1-5 μm whisker 3 parts, additive 5 parts, the additional Alumina gel accounting for above-mentioned gross weight 10%; Additive is magnesium sulfate calcium potassium powder, silicon powder and carbonic acid zirconium powder, and its weight ratio is 1:1:1; The density of Alumina gel is 1.1g/ml, PH is 4.5.Described aluminate cement is pure calcium aluminate cement.Prepare burden according to above-mentioned formula, first be dry mixed evenly in stirrer, then the Alumina gel of 15% is added, discharging after wet mixing evenly and with mud smear, the instrument such as cleaver smeared to former furnace lining crack or pit, then manual compaction, floating, through natural curing after 5 hours, high temperature kiln can put into production by normal temperature increasing schedule.Work-ing life extends 32%, high by more than 22% when heat insulating effect is not repaired.
Claims (4)
1. a porzite flame-proof coating, it is characterized in that it comprises the component of following parts by weight: 3-1mm mullite aggregate 30-40 part, 1-0mm flint clay aggregate 5-15 part, 0.5-0mm flint clay aggregate 10-20 part, mullite powder 11-21 part, modification Faku County soil 4-6 part, aluminate cement 5-7 part, mullite 1-5 μm whisker 1-3 part, titanium nitride 1-5 μm whisker 1-3 part, additive 3-5 part, the additional Alumina gel accounting for above-mentioned gross weight 10-18%; Additive is magnesium sulfate calcium potassium powder, silicon powder and carbonic acid zirconium powder, and its weight ratio is 1:1:1; The density of Alumina gel is 1.1g/ml, PH is 4.5.
2. the porzite flame-proof coating as described in claim 1, is characterized in that: described Alumina gel such as to can be replaced at the silicon sol of weight.
3. the porzite flame-proof coating as described in claim 1, is characterized in that: the aluminium content of described aluminate cement is more than 50%.
4. the porzite flame-proof coating as described in claim 1, it is characterized in that: described modification Faku County soil the first step is that Faku County's soil is obtained product 1 700 DEG C of insulations after 10 hours, then by weight 50:1, product 1 is mixed evenly with polyvinyl alcohol, be modification Faku County soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510356600.6A CN104909779A (en) | 2015-06-25 | 2015-06-25 | Mullite refractory coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510356600.6A CN104909779A (en) | 2015-06-25 | 2015-06-25 | Mullite refractory coating material |
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| Publication Number | Publication Date |
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| CN104909779A true CN104909779A (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510356600.6A Pending CN104909779A (en) | 2015-06-25 | 2015-06-25 | Mullite refractory coating material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272016A (en) * | 2015-11-06 | 2016-01-27 | 河南理工大学 | Nano-titanium nitride and titanium nitride crystal whisker dry-mixed mortar and preparation method thereof |
-
2015
- 2015-06-25 CN CN201510356600.6A patent/CN104909779A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272016A (en) * | 2015-11-06 | 2016-01-27 | 河南理工大学 | Nano-titanium nitride and titanium nitride crystal whisker dry-mixed mortar and preparation method thereof |
| CN105272016B (en) * | 2015-11-06 | 2018-08-17 | 河南理工大学 | A kind of Nano titanium nitride and titanium nitride whisker dry-mixed mortar and preparation method thereof |
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Application publication date: 20150916 |