CN107188587A - The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation - Google Patents
The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation Download PDFInfo
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Abstract
The present invention relates to the siliceous dry type ramming material of the lightweight for hot-blast stove heat-insulation and heat-preservation, by 50 60 parts of the waste light silica brick that parts by weight are the 5mm of granularity 0.5, 10 20 parts of the 0.5mm of granularity 0 waste light silica brick, 10 20 parts of the 1mm of granularity 0 silica, weighing and proportioning is good, mixing plant is put into stir 12 minutes, it is 10 20 parts of the silica that granularity is less than 0.088mm by parts by weight, 0.5 3 parts of the mixture of boric acid and sodium carbonate, weighing and proportioning is good, mixing obtains fine powder matrix in 12 minutes in premixing machine, fine powder matrix is added to stirring in above-mentioned mixing plant and obtains within 35 minutes the siliceous dry type ramming material of lightweight, the siliceous dry type ramming material of obtained lightweight is poured into the gap between chamber of hot-blast stove and combustion chamber operational lining and furnace shell, and form insulating after uniformly consolidating, it is low with thermal conductivity factor, heat-proof quality is good, easy construction, the characteristics of convenient transportation, the heat preservation and energy conservation effects of hot-blast stove can be effectively improved.
Description
Technical field
The present invention relates to a kind of siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation, and the lightweight are siliceous dry
The manufacture method and application method of formula ramming mass, belong to hot-blast stove furnace lining heat-insulation and heat-preservation field.
Background technology
There is the problem of casing temperature is high, energy resource consumption is big in a large amount of blast funnace hot blast stoves domestic at present, existing hot-blast stove is universal
Using light-weight brick as insulation material, but the thermal conductivity factor of light-weight brick is larger, and heat-proof quality is not enough, causes hot-blast stove high-temperature portion
The heat-insulating property of position is bad, and casing temperature remains high, and heat loss is big, and lightweight process for producing bricks is complicated in addition, energy consumption when burning till
Height, packed and transported inconvenience, easily makes brick breaks in cargo handling process.
A kind of hot-blast stove, including external frame are disclosed in Chinese patent application prospectus, in CN201582979U
Frame and internal body of heater, internally set thermal insulation layer on the outside of body of heater, thermal insulation layer uses integrally manufactured structure, heat is prevented using thermal insulation layer
Amount is scattered and disappeared, and thermal insulation layer uses integrally manufactured structure, and thermal insulation mortar is used to plaster on the outside of body of heater, integrative-structure is formed after drying.
But, less desirable as the heat insulating effect of thermal insulation layer from thermal insulation mortar, vitreous in the market is micro-
Pearl density is in 80~120kg/m3, some can also be produced because of applied mechanical power in the production, work progress in mortar
Broken, to make dry density and thermal conductivity factor using such product can meet the insulation sand of GB/T20473-2006 requirements
Slurry, technically acquires a certain degree of difficulty.And most enterprises are provided for saving technique cost using raw material supplier at present
Simple formulation, then because the limitation of cost so that the thermal conductivity factor of most of thermal insulation mortar products is larger.
The content of the invention
The problem to be solved in the present invention is：Overcome in the prior art hot-blast stove thermal insulation layer thermal conductivity factor it is larger, heat-proof quality
There is provided a kind of siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation for poor deficiency.
The present invention is achieved by the following technical solutions：A kind of siliceous dry type of lightweight for hot-blast stove heat-insulation and heat-preservation is smash
Dnockout, includes the raw material of following portions by weight, granularity 0.5-5mm useless 50-60 parts of the silica brick of lightweight, granularity 0-0.5mm lightweight
Useless 10-20 parts of silica brick, 10-20 parts of granularity 0-1mm silica, granularity is less than 0.088mm 10-20 parts of silica, boric acid and carbonic acid
0.5-3 parts of the mixture of sodium.
Preferably, a kind of siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation, including following parts by weight
Raw material, granularity 0.5-5mm lightweights are given up 55 parts of silica brick, and granularity 0-0.5mm lightweights are given up 20 parts of silica brick, 10 parts of granularity 0-1mm silicas, grain
Degree is less than 3 parts of the mixture addition of 15 parts of 0.088mm silicas, boric acid and sodium carbonate.
Preferably, bulk density≤0.8g/cm of the useless silica brick of the lightweight3, the silica quality fraction of the silica
>=97%.
A kind of preparation method of siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation, comprises the following steps：
(1) by 50-60 parts of the waste light silica brick that parts by weight are granularity 0.5-5mm, granularity 0-0.5mm waste light silica brick
10-20 parts, 10-20 parts of granularity 0-1mm silica, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes；
(2) parts by weight are less than to the mixture 0.5-3 of 0.088mm 10-20 parts of silica, boric acid and sodium carbonate for granularity
Part, weighing and proportioning is good, and mixing obtains fine powder matrix in 1-2 minutes in premixing machine；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, mixing is equal
The siliceous dry type ramming material of lightweight is obtained after even, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene.
A kind of application method of the siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation, it is characterised in that including with
Lower step：
(1) build working lining by laying bricks or stones and fill ramming mass：When chamber of hot-blast stove and combustion chamber are constructed, working lining is first built by laying bricks or stones,
When building 0.8-1.2m height by laying bricks or stones, the siliceous dry type ramming material of the lightweight is filled up in chamber of hot-blast stove and combustion chamber operational lining
In cavity between furnace shell, increase the density of dry type ramming material using pneumatic hammer or plate vibrator, until dry type ramming material
Not in sedimentation.
(2) ramming mass is filled paragraph by paragraph upwards successively：Construction upwards successively, and it is described light according to the method filling of step (1)
The siliceous dry type ramming material of matter, until the siliceous dry type ramming material of the lightweight fill up full regenerator and combustion chamber operational lining and furnace shell it
Between cavity.
The present invention compared with prior art, with following features：It is siliceous dry that the present invention recycles useless silica brick production lightweight
Formula ramming mass, using the siliceous dry type ramming material of lightweight as hot-blast stove heat-insulating heat-preserving material, the siliceous dry type ramming material of lightweight is fallen
Enter in the gap between chamber of hot-blast stove and combustion chamber operational lining and furnace shell, and uniformly consolidate, form hot-blast stove heat-insulation and heat-preservation
Layer, because the siliceous dry type ramming material space of lightweight is more, easy construction, convenient transportation, thermal conductivity factor is low, and heat-proof quality is good so that
Hot-blast stove heat preservation and insulation is superior, reduces casing temperature, reduces heat loss, effectively instead of light in traditional hot-blast stove
Matter brick, it is to avoid the lightweight process for producing bricks in traditional hot-blast stove is complicated, high energy consumption when burning till, packed and transported inconvenience, handling are easy
The technical problem of damage.
Embodiment
In order to be more clearly understood that the technology contents of the present invention, described in detail especially exemplified by following examples.It is following to implement
Bulk density≤0.8g/cm of the useless silica brick of lightweight in the raw material used in example3, silica quality fraction >=98% of silica,
Detect that accepted standard is：Bulk density uses GB/T2999-2002, and thermal conductivity factor uses GB/T5990-2006, and normal temperature is pressure-resistant
Intensity uses GB/T5072-2008.
Embodiment 1：
The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment is prepared according to the following steps：
(1) it is that granularity 0.5-5mm lightweights are given up 60 parts of silica brick by parts by weight, granularity 0-0.5mm gives up 20 parts of silica brick, granularity 0-
20 parts of 1mm silicas, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes.
(2) it is 3 parts of the mixture that granularity is less than 20 parts of 0.088mm silicas, boric acid and sodium carbonate, wherein boron by parts by weight
The mixed proportion of acid and sodium carbonate is 5:1, weighing and proportioning is good, and mixing obtains fine powder matrix in 1-2 minutes in premixing machine；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, mixing is equal
The siliceous dry type ramming material of lightweight is obtained after even, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene；
When chamber of hot-blast stove and combustion chamber are constructed, working lining is first built by laying bricks or stones, will be light when building 0.8m-1.2m height by laying bricks or stones
The cavity that the siliceous dry type ramming material of matter is filled up between working lining and furnace shell, dry type ramming is increased using pneumatic hammer or plate vibrator
The density of material, until dry type ramming material is not in sedimentation.It is operated lining construction upwards successively, often builds 0.8-1.2m work by laying bricks or stones
Lining, the siliceous dry type ramming material of light filling inward according to the method described above, until chamber of hot-blast stove and combustion chamber operational lining and stove
Consolidate in cavity between shell and uniformly.
The laboratory parameters such as table 1 of the siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment
It is shown.
The performance indications of the siliceous dry type ramming material of lightweight of the present invention of table 1
Embodiment 2
The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment is prepared according to the following steps：
(1) it is that granularity 0.5-5mm lightweights are given up 58 parts of silica brick by parts by weight, granularity 0-0.5mm gives up 12 parts of silica brick, granularity 0-
12 parts of 1mm silicas, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes；
(2) granularity is less than to 2 parts of the mixture of 18 parts of 0.088mm silicas, boric acid and sodium carbonate, its mesoboric acid and sodium carbonate
Mixed proportion is 7:2, weighing and proportioning is good, and mixing obtains fine powder matrix in 1-2 minutes in premixing machine；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, mixing is equal
The siliceous dry type ramming material of lightweight is obtained after even, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene.
When chamber of hot-blast stove and combustion chamber are constructed, working lining is first built by laying bricks or stones, will be light when building 0.8m-1.2m height by laying bricks or stones
The cavity that the siliceous dry type ramming material of matter is filled up between working lining and furnace shell, dry type ramming is increased using pneumatic hammer or plate vibrator
The density of material, until dry type ramming material is not in sedimentation.It is operated lining construction upwards successively, often builds 0.8-1.2m work by laying bricks or stones
Lining, the siliceous dry type ramming material of light filling inward according to the method described above, until chamber of hot-blast stove and combustion chamber operational lining and stove
Consolidate in cavity between shell and uniformly.
The laboratory parameters such as table 2 of the siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment
It is shown.
The performance indications of the siliceous dry type ramming material of lightweight of the present invention of table 2
Embodiment 3
The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment is prepared according to the following steps：
(1) it is that granularity 0.5-5mm lightweights are given up 55 parts of silica brick by parts by weight, granularity 0-0.5mm gives up 20 parts of silica brick, granularity 0-
10 parts of 1mm silicas, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes.
(2) it is 2 parts of the mixture that granularity is less than 15 parts of 0.088mm silicas, boric acid and sodium carbonate, wherein boron by parts by weight
The mixed proportion of acid and sodium carbonate is 5:2, weighing and proportioning is good, and mixing obtains fine powder matrix in 1-2 minutes in premixing machine；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, mixing is equal
The siliceous dry type ramming material of lightweight is obtained after even, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene.
When chamber of hot-blast stove and combustion chamber are constructed, working lining is first built by laying bricks or stones, will be light when building 0.8m-1.2m height by laying bricks or stones
The cavity that the siliceous dry type ramming material of matter is filled up between working lining and furnace shell, dry type ramming is increased using pneumatic hammer or plate vibrator
The density of material, until dry type ramming material is not in sedimentation.It is operated lining construction upwards successively, often builds 0.8-1.2m work by laying bricks or stones
Lining, the siliceous dry type ramming material of light filling inward according to the method described above, until chamber of hot-blast stove and combustion chamber operational lining and stove
Consolidate in cavity between shell and uniformly.
The laboratory parameters such as table 3 of the siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment
It is shown.
The performance indications of the siliceous dry type ramming material of lightweight of the present invention of table 3
Embodiment 4
The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment is prepared according to the following steps：
(1) it is that granularity 0.5-5mm lightweights are given up 53 parts of silica brick by parts by weight, granularity 0-0.5mm gives up 20 parts of silica brick, granularity 0-
17 parts of 1mm silicas, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes.
(2) granularity is less than to 2 parts of the mixture of 10 parts of 0.088mm silicas, boric acid and sodium carbonate, its mesoboric acid and sodium carbonate
Mixed proportion be 3:1, weighing and proportioning is good, and mixing obtains fine powder matrix in 1-2 minutes in premixing machine；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, mixing is equal
The siliceous dry type ramming material of lightweight is obtained after even, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene.
When chamber of hot-blast stove and combustion chamber are constructed, working lining is first built by laying bricks or stones, will be light when building 0.8m-1.2m height by laying bricks or stones
The cavity that the siliceous dry type ramming material of matter is filled up between working lining and furnace shell, dry type ramming is increased using pneumatic hammer or plate vibrator
The density of material, until dry type ramming material is not in sedimentation.It is operated lining construction upwards successively, often builds 0.8-1.2m work by laying bricks or stones
Lining, the siliceous dry type ramming material of light filling inward according to the method described above, until chamber of hot-blast stove and combustion chamber operational lining and stove
Consolidate in cavity between shell and uniformly.
The laboratory parameters such as table 4 of the siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment
It is shown.
The performance indications of the siliceous dry type ramming material of lightweight of the present invention of table 4
Embodiment 5
The siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment is prepared according to the following steps：
(1) it is that granularity 0.5-5mm lightweights are given up 50 parts of silica brick by parts by weight, granularity 0-0.5mm gives up 10 parts of silica brick, granularity 0-
10 parts of 1mm silicas, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes；
(2) it is 0.5 part of the mixture that granularity is less than 10 parts of 0.088mm silicas, boric acid and sodium carbonate by parts by weight, wherein
The mixed proportion of boric acid and sodium carbonate is 4:1, weighing and proportioning is good, and mixing obtains the siliceous dry type of lightweight for 1-2 minutes in premixing machine
Ramming mass；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, mixing is equal
The siliceous dry type ramming material of lightweight is obtained after even, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene.
When chamber of hot-blast stove and combustion chamber are constructed, working lining is first built by laying bricks or stones, will be light when building 0.8m-1.2m height by laying bricks or stones
The cavity that the siliceous dry type ramming material of matter is filled up between working lining and furnace shell, dry type ramming is increased using pneumatic hammer or plate vibrator
The density of material, until dry type ramming material is not in sedimentation.It is operated lining construction upwards successively, often builds 0.8-1.2m work by laying bricks or stones
Lining, the siliceous dry type ramming material of light filling inward according to the method described above, until chamber of hot-blast stove and combustion chamber operational lining and stove
Consolidate in cavity between shell and uniformly.
The laboratory parameters such as table 5 of the siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation of the present embodiment
It is shown.
The performance indications of the siliceous dry type ramming material of lightweight of the present invention of table 5
In the embodiment above, embodiment 3 is the present invention preferably embodiment, of the invention in embodiment 3 to be used for heat
The siliceous dry type ramming material of wind furnace heat-insulation and heat-preservation, bulk density≤1.2g/cm3, thermal conductivity factor (350 ± 25 DEG C)≤0.452W/
(mk), cold crushing strength is 2.62MPa, compared with traditional hot-blast stove, and the present invention is used as heat using siliceous dry type ramming material
The thermal insulation layer of wind furnace, relatively low with bulk density, thermal conductivity factor is relatively low, heat-proof quality preferably, higher excellent of cold crushing strength
Point, the present invention prepares siliceous dry type ramming material as heat-insulating heat-preserving material by the use of useless silica brick, and not only preparation technology is simple, and makes
Obtain siliceous dry type ramming material space many, reduce heat loss, reduce casing temperature, enhance heat insulation and preservation effect.In addition this hair
The more traditional hot-blast stove insulating brick of bright siliceous dry type ramming material is compared, and packed and transported is convenient, and handling are hardly damaged, are more beneficial for applying
Work.
Two kinds of specific embodiments of the present invention are the foregoing is only, but embodiments of the invention are not limited thereto, it is any
Those skilled in the art in the field of the invention, the change made or modification all cover protection scope of the present invention it
It is interior.
Claims (5)
1. a kind of siliceous dry type ramming material of lightweight for hot-blast stove heat-insulation and heat-preservation, it is characterised in that：Including following portions by weight
Raw material, granularity 0.5-5mm lightweight gives up 50-60 part of silica brick, granularity 0-0.5mm useless 10-20 parts of the silica brick of lightweight, granularity 0-
10-20 parts of 1mm silica, granularity is less than 0.5-3 parts of the mixture of 0.088mm 10-20 parts of silica, boric acid and sodium carbonate.
2. the siliceous dry type ramming material according to claim 1 for hot-blast stove heat-insulation and heat-preservation, it is characterised in that：Including with
The raw material of lower parts by weight, granularity 0.5-5mm lightweights are given up 55 parts of silica brick, and granularity 0-0.5mm lightweights are given up 20 parts of silica brick, granularity 0-
10 parts of 1mm silicas, granularity is less than 3 parts of the mixture addition of 15 parts of 0.088mm silicas, boric acid and sodium carbonate.
3. the siliceous dry type ramming material according to claim 1 or 2 for hot-blast stove heat-insulation and heat-preservation, it is characterised in that：Institute
State bulk density≤0.8g/cm of the useless silica brick of lightweight3, silica quality fraction >=97% of the silica.
4. a kind of preparation method of the siliceous dry type ramming material for hot-blast stove heat-insulation and heat-preservation described in claim 1-3, it is special
Levy and be to comprise the following steps：
(1) by 50-60 parts of the waste light silica brick that parts by weight are granularity 0.5-5mm, granularity 0-0.5mm waste light silica brick 10-
20 parts, 10-20 parts of granularity 0-1mm silica, weighing and proportioning is good, is put into mixing plant and stirs 1-2 minutes；
(2) by 0.5-3 parts of the mixture that parts by weight are 10-20 parts of the silica that granularity is less than 0.088mm, boric acid and sodium carbonate,
Weighing and proportioning is good, and mixing obtains fine powder matrix in 1-2 minutes in premixing machine；
(3) by the fine powder matrix premixed in step 2, it is added in the mixing plant of step 1 and stirs 3-5 minutes, after is well mixed
The siliceous dry type ramming material of lightweight is obtained, the siliceous dry type ramming material of lightweight is subjected to packed and transported to using scene.
5. a kind of application method of the siliceous dry type ramming material for hot-blast stove heat-insulation and heat-preservation described in claim 1-3, it is special
Levy and be to comprise the following steps：
(1) build working lining by laying bricks or stones and fill ramming mass：When chamber of hot-blast stove and combustion chamber are constructed, first build working lining by laying bricks or stones, build by laying bricks or stones
During to 0.8-1.2m height, the siliceous dry type ramming material of the lightweight is filled up in chamber of hot-blast stove and combustion chamber operational lining and stove
In cavity between shell, the density of dry type ramming material is increased using pneumatic hammer or plate vibrator, until dry type ramming material does not exist
Sedimentation.
(2) ramming mass is filled paragraph by paragraph upwards successively：Construction upwards successively, and fill the light silica according to the method for step (1)
Matter dry type ramming material, until the siliceous dry type ramming material of the lightweight is filled up between full regenerator and combustion chamber operational lining and furnace shell
Cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JPH11263674A (en) * | 1998-03-16 | 1999-09-28 | Toshiba Ceramics Co Ltd | Ramming material for lining induction furnace |
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