CN105272314B - A kind of environmentally friendly Chrome-free air brick - Google Patents
A kind of environmentally friendly Chrome-free air brick Download PDFInfo
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- CN105272314B CN105272314B CN201510776745.1A CN201510776745A CN105272314B CN 105272314 B CN105272314 B CN 105272314B CN 201510776745 A CN201510776745 A CN 201510776745A CN 105272314 B CN105272314 B CN 105272314B
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Abstract
The invention discloses a kind of environmentally friendly Chrome-free air brick, the air brick is prepared by the raw material of following parts by weight, plate diamond spar particle：30~50 parts, fused white corundum particle：20~30 parts, plate diamond spar fine powder：2~4 parts, electric smelting aluminium riched spinel particle：16~20 parts, electric smelting aluminium riched spinel fine powder：2~3 parts, spinel ultrafine powder：3~5 parts, Reactive alumina：1~3 part, pure calcium aluminate cement：3~5 parts, explosion-proof fiber：0.6~0.8 part, FS65：0.4~0.6 part, FW10：0.1~0.3 part and SD 122：0.2~0.4 part, the present invention uses material corundum spinelle system, Ultra low cement bond, add spinel ultrafine powder and dispersant with high efficiency is made, the performance of the similar product containing chromium can be met or exceeded so that the air brick corrosion resistance and permeability resistance of preparation, improve service life and permeability, also pollution is greatly reduced, ensures environment formedness.
Description
Technical field
The present invention relates to the technical field of Ferrous Metallurgy, particularly a kind of technical field of environmentally friendly Chrome-free air brick.
Background technology
Air brick plays vital as supply original paper important in smelting iron and steel technique in modern smelting process
Effect.Especially in the smelting of variety steel and clean steel, inert gas is blown into molten steel by air brick, reaches stirring steel
The effect of water, make inclusion floating, temperature and uniform ingredients in molten steel, be the important means for improving steel quality.
Air brick is a kind of energy-saving new product of high life, and a kind of important refined steel ladles refractory material system
Product, in Practical Project in use, air brick faces Railway Project all the time：Firstth, Spalling resistance can be poor, and air brick was using
The molten steel of high temperature is contacted in journey so that air brick produces very big thermal stress, such that air brick contacts molten steel due to it
Surface part thermal stress effect and center thermal stress effect it is of different sizes, after long-term use of, cause air brick to contact steel
The surface layer peeling of liquid.Secondth, corrosion resistance is poor, and it is big to be clearly appear as the Corrosion rate of air brick during use at present,
Residual turn of height is unable to reach process requirements after deteriorating.3rd, permeability is unstable, due to a large amount of impurity in molten steel be present,
Being fallen on after impurity deposition on air brick easily influences the gas permeability of air brick interior air-flow passage.
In order to solve these problems, and traditional gas permeable brick is to improve corrosion resistance and permeability resistance to slag, to protect
The service life and permeability of air brick are demonstrate,proved, chromium oxide is generally added in air brick（Cr2O3）.This is due to that chromium oxide exists
Highly viscous glass phase can be formed under high temperature, prevents the erosion and infiltration of slag.Because chromium is heavy metal, exist to environment dirty
Dye, the Trend of Chrome-free of refractory material are industry focus of attention in recent years.
In order to preferably solve these problems, the applicant has developed a kind of environmentally friendly Chrome-free air brick, and material is firm
Jade-spinelle system, using Ultra low cement bond, add spinel ultrafine powder and dispersant with high efficiency is made, can reach
The performance of the even more than similar product containing chromium, major iron and steel enterprise promotes the use of at home at present, achieves good city
Field effect.
The content of the invention
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of environmentally friendly Chrome-free air brick, can be significantly
Ground reduce pollution, ensure environment formedness, improve corrosion resistance and permeability resistance, with ensure the service life of air brick and thoroughly
Gas performance.
To achieve the above object, the present invention proposes a kind of environmentally friendly Chrome-free air brick, and the air brick is by following parts by weight
Raw material be prepared, plate diamond spar particle：30~50 parts, fused white corundum particle：20~30 parts, plate diamond spar fine powder：2
~4 parts, electric smelting aluminium riched spinel particle：16~20 parts, electric smelting aluminium riched spinel fine powder：2~3 parts, spinel ultrafine powder：3~5
Part, Reactive alumina：1~3 part, pure calcium aluminate cement：3~5 parts, explosion-proof fiber：0.6~0.8 part, FS65：0.4~
0.6 part, FW10：0.1~0.3 part and SD-122：0.2~0.4 part, the air brick is that above-mentioned raw materials are well mixed to obtain into solids
Material, is ground, the water for adding fixed material gross mass 6%~8% is well mixed, and obtains mixed slurry, mixed slurry is put
Enter extrusion forming in mould, then stand 5~7 hours, the demoulding, dry 20~24 hours at 350 DEG C~400 DEG C afterwards,
Finally fired in kiln, firing temperature is controlled at 1200 DEG C, can be burnt till within 2 hours.
Preferably, the air brick is prepared by the raw material of following parts by weight, the air brick is by following weight
What the raw material of part was prepared, plate diamond spar particle：35~45 parts, fused white corundum particle：23~27 parts, plate diamond spar it is thin
Powder：2.5~3.5 parts, electric smelting aluminium riched spinel particle：17~19 parts, electric smelting aluminium riched spinel fine powder：2.3~2.7 parts, point crystalline substance
Stone Ultramicro-powder：3.5~4.5 parts, Reactive alumina：1.5~2.5 parts, pure calcium aluminate cement：3.5~4.5 parts, explosion-proof fibre
Dimension：0.65~0.75 part, FS65：0.45~0.55 part, FW10：0.15~0.25 part and SD-122：0.25~0.35 part.
Preferably, the air brick is prepared by the raw material of following parts by weight, the air brick is by following weight
What the raw material of part was prepared, plate diamond spar particle：40 parts, fused white corundum particle：25 parts, plate diamond spar fine powder：3 parts, electricity
Molten aluminium riched spinel particle：18 parts, electric smelting aluminium riched spinel fine powder：2.5 parts, spinel ultrafine powder：4 parts, activated alumina it is micro-
Powder：2 parts, pure calcium aluminate cement：4 parts, explosion-proof fiber：0.7 part, FS65：0.5 part, FW10：0.23 part and SD-122：0.3 part.
Preferably, the air brick is prepared by the raw material of following parts by weight, the air brick is by following weight
What the raw material of part was prepared, plate diamond spar particle：35 parts, fused white corundum particle：23 parts, plate diamond spar fine powder：2.5 parts,
Electric smelting aluminium riched spinel particle：17 parts, electric smelting aluminium riched spinel fine powder：2.3 parts, spinel ultrafine powder：3.5 parts, active oxidation
Aluminium micro mist：1.5 parts, pure calcium aluminate cement：3.5 parts, explosion-proof fiber：0.65 part, FS65：0.45 part, FW10：0.15 part and SD-
122：0.25 part.
Preferably, the air brick is prepared by the raw material of following parts by weight, the air brick is by following weight
What the raw material of part was prepared, plate diamond spar particle：45 parts, fused white corundum particle：27 parts, plate diamond spar fine powder：3.5 parts,
Electric smelting aluminium riched spinel particle：19 parts, electric smelting aluminium riched spinel fine powder：2.7 parts, spinel ultrafine powder：4.5 parts, active oxidation
Aluminium micro mist：2.5 part, pure calcium aluminate cement：4.5 parts, explosion-proof fiber：0.75 part, FS65：0.55 part, FW10：0.25 part and SD-
122：0.35 part.
Beneficial effects of the present invention：The present invention uses material corundum-spinel system, Ultra low cement bond, it is brilliant to add point
Stone Ultramicro-powder and dispersant with high efficiency are made, and can meet or exceed the performance of the similar product containing chromium so that prepare
Air brick corrosion resistance and permeability resistance, improve service life and permeability, also greatly reduce pollution, ensure environment
Formedness.
Embodiment
Embodiment one
A kind of environmentally friendly Chrome-free air brick, the air brick are the plate diamond spars being prepared by the raw material of following parts by weight
Grain：50 parts, fused white corundum particle：30 parts, plate diamond spar fine powder：4 parts, electric smelting aluminium riched spinel particle：20 parts, electric smelting richness aluminium
Spinelle fine powder：3 parts, spinel ultrafine powder：5 parts, Reactive alumina：3 parts, pure calcium aluminate cement：5 parts, explosion-proof fiber：
0.8 part, FS65：0.6 part, FW10：0.3 part and SD-122：0.4 part, the air brick is that above-mentioned raw materials are well mixed to obtain into solid
Material, ground, the water for adding fixed material gross mass 6%~8% is well mixed, and obtains mixed slurry, by mixed slurry
Extrusion forming in mould is put into, then stands 5~7 hours, the demoulding, drying is 20~24 small at 350 DEG C~400 DEG C afterwards
When, finally fired in kiln, firing temperature is controlled at 1200 DEG C, can be burnt till within 2 hours.
Embodiment two
A kind of environmentally friendly Chrome-free air brick, the air brick are prepared by the raw material of following parts by weight, plate diamond spar
Grain：30 parts, fused white corundum particle：20 parts, plate diamond spar fine powder：2 parts, electric smelting aluminium riched spinel particle：16 parts, electric smelting richness aluminium
Spinelle fine powder：2 parts, spinel ultrafine powder：3 parts, Reactive alumina：1 part, pure calcium aluminate cement：3 parts, explosion-proof fiber：
0.6 part, FS65：0.4 part, FW10：0.1 part and SD-122：0.2 part, the air brick is that above-mentioned raw materials are well mixed to obtain into solid
Material, ground, the water for adding fixed material gross mass 6%~8% is well mixed, and obtains mixed slurry, by mixed slurry
Extrusion forming in mould is put into, then stands 5~7 hours, the demoulding, drying is 20~24 small at 350 DEG C~400 DEG C afterwards
When, finally fired in kiln, firing temperature is controlled at 1200 DEG C, can be burnt till within 2 hours.
Embodiment three
A kind of environmentally friendly Chrome-free air brick, the air brick are prepared by the raw material of following parts by weight, plate diamond spar
Grain：40 parts, fused white corundum particle：25 parts, plate diamond spar fine powder：3 parts, electric smelting aluminium riched spinel particle：18 parts, electric smelting richness aluminium
Spinelle fine powder：2.5 parts, spinel ultrafine powder：4 parts, Reactive alumina：2 parts, pure calcium aluminate cement：4 parts, explosion-proof fibre
Dimension：0.7 part, FS65：0.5 part, FW10：0.2 part and SD-122：0.3 part, the air brick is to be well mixed above-mentioned raw materials to consolidate
Body material, is ground, and the water for adding fixed material gross mass 6%~8% is well mixed, and obtains mixed slurry, by mixing slurry
Material is put into extrusion forming in mould, then stands 5~7 hours, and the demoulding, drying is 20~24 small at 350 DEG C~400 DEG C afterwards
When, finally fired in kiln, firing temperature is controlled at 1200 DEG C, can be burnt till within 2 hours.
Example IV
A kind of environmentally friendly Chrome-free air brick, the air brick are prepared by the raw material of following parts by weight, plate diamond spar
Grain：35 parts, fused white corundum particle：23 parts, plate diamond spar fine powder：2.5 parts, electric smelting aluminium riched spinel particle：17 parts, electric smelting richness
Aluminate fine powder：2.3 parts, spinel ultrafine powder：3.5 parts, Reactive alumina：1.5 parts, pure calcium aluminate cement：3.5
Part, explosion-proof fiber：0.65 part, FS65：0.45 part, FW10：0.15 part and SD-122：0.25 part, the air brick is by above-mentioned original
Material is well mixed to obtain solid material, is ground, the water for adding fixed material gross mass 6%~8% is well mixed, and must be mixed
Slurry, mixed slurry is put into extrusion forming in mould, then stands 5~7 hours, the demoulding, afterwards at 350 DEG C~400 DEG C
20~24 hours are dried, are finally fired in kiln, firing temperature is controlled at 1200 DEG C, can be burnt till within 2 hours.
Embodiment five
A kind of environmentally friendly Chrome-free air brick, the air brick are prepared by the raw material of following parts by weight, plate diamond spar
Grain：45 parts, fused white corundum particle：27 parts, plate diamond spar fine powder：3.5 parts, electric smelting aluminium riched spinel particle：19 parts, electric smelting richness
Aluminate fine powder：2.7 parts, spinel ultrafine powder：4.5 parts, Reactive alumina：2.5 parts, pure calcium aluminate cement：4.5
Part, explosion-proof fiber：0.75 part, FS65：0.55 part, FW10：0.25 part and SD-122：0.35 part, the air brick is by above-mentioned original
Material is well mixed to obtain solid material, is ground, the water for adding fixed material gross mass 6%~8% is well mixed, and must be mixed
Slurry, mixed slurry is put into extrusion forming in mould, then stands 5~7 hours, the demoulding, afterwards at 350 DEG C~400 DEG C
20~24 hours are dried, are finally fired in kiln, firing temperature is controlled at 1200 DEG C, can be burnt till within 2 hours.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after
Scheme belong to protection scope of the present invention.
Claims (5)
- A kind of 1. environmentally friendly Chrome-free air brick, it is characterised in that：The air brick is prepared by the raw material of following parts by weight, plate Shape corundum in granules：30~50 parts, fused white corundum particle：20~30 parts, plate diamond spar fine powder：2~4 parts, electric smelting richness aluminium point crystalline substance Stone particle：16~20 parts, electric smelting aluminium riched spinel fine powder：2~3 parts, spinel ultrafine powder：3~5 parts, Reactive alumina： 1~3 part, pure calcium aluminate cement：3~5 parts, explosion-proof fiber：0.6~0.8 part, FS65：0.4~0.6 part, FW10：0.1~0.3 Part and SD-122：0.2~0.4 part, the air brick is that above-mentioned raw materials are well mixed to obtain into solid material, is ground, added The water of fixed material gross mass 6%~8% is well mixed, and is obtained mixed slurry, mixed slurry is put into extrusion forming in mould, so 5~7 hours are stood afterwards, the demoulding, 20~24 hours is dried at 350 DEG C~400 DEG C afterwards, is finally fired in kiln, is burnt Temperature control processed can be burnt till for 2 hours at 1200 DEG C.
- A kind of 2. environmentally friendly Chrome-free air brick as claimed in claim 1, it is characterised in that：The air brick is by following parts by weight What raw material was prepared, plate diamond spar particle：35~45 parts, fused white corundum particle：23~27 parts, plate diamond spar fine powder：2.5 ~3.5 parts, electric smelting aluminium riched spinel particle：17~19 parts, electric smelting aluminium riched spinel fine powder：2.3~2.7 parts, spinelle ultra micro Powder：3.5~4.5 parts, Reactive alumina：1.5~2.5 parts, pure calcium aluminate cement：3.5~4.5 parts, explosion-proof fiber：0.65 ~0.75 part, FS65：0.45~0.55 part, FW10：0.15~0.25 part and SD-122：0.25~0.35 part.
- A kind of 3. environmentally friendly Chrome-free air brick as claimed in claim 2, it is characterised in that：The air brick is by following parts by weight What raw material was prepared, plate diamond spar particle：40 parts, fused white corundum particle：25 parts, plate diamond spar fine powder：3 parts, electric smelting richness Aluminate particle：18 parts, electric smelting aluminium riched spinel fine powder：2.5 parts, spinel ultrafine powder：4 parts, Reactive alumina：2 Part, pure calcium aluminate cement：4 parts, explosion-proof fiber：0.7 part, FS65：0.5 part, FW10：0.23 part and SD-122：0.3 part.
- A kind of 4. environmentally friendly Chrome-free air brick as claimed in claim 2, it is characterised in that：The air brick is by following parts by weight What raw material was prepared, plate diamond spar particle：35 parts, fused white corundum particle：23 parts, plate diamond spar fine powder：2.5 parts, electric smelting Aluminium riched spinel particle：17 parts, electric smelting aluminium riched spinel fine powder：2.3 parts, spinel ultrafine powder：3.5 parts, activated alumina it is micro- Powder：1.5 parts, pure calcium aluminate cement：3.5 parts, explosion-proof fiber：0.65 part, FS65：0.45 part, FW10：0.15 part and SD-122： 0.25 part.
- A kind of 5. environmentally friendly Chrome-free air brick as claimed in claim 2, it is characterised in that：The air brick is by following parts by weight What raw material was prepared, plate diamond spar particle：45 parts, fused white corundum particle：27 parts, plate diamond spar fine powder：3.5 parts, electric smelting Aluminium riched spinel particle：19 parts, electric smelting aluminium riched spinel fine powder：2.7 parts, spinel ultrafine powder：4.5 parts, activated alumina it is micro- Powder：2.5 parts, pure calcium aluminate cement：4.5 parts, explosion-proof fiber：0.75 part, FS65：0.55 part, FW10：0.25 part and SD-122： 0.35 part.
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| DE102016224443A1 (en) * | 2016-12-08 | 2018-06-14 | Siemens Aktiengesellschaft | Erosion-resistant ceramic material, powder, slurry and component |
| CN106588056A (en) * | 2016-12-22 | 2017-04-26 | 武汉科技大学 | Spinel-calcium hexaluminate castable used for catalytic coal gasification furnace, and preparation method thereof |
| CN112110736A (en) * | 2020-07-29 | 2020-12-22 | 北京金隅通达耐火技术有限公司 | Corundum spinel brick for hazardous waste disposal equipment and preparation method thereof |
| CN112521167A (en) * | 2020-12-08 | 2021-03-19 | 洛阳科创新材料股份有限公司 | Chrome corundum spinel tapping hole head brick for eccentric electric furnace and preparation method thereof |
| CN112876222A (en) * | 2021-02-01 | 2021-06-01 | 唐山市曹妃甸区节能耐火材料有限公司 | Chromium-free fire clay for ladle sliding plate nozzle and preparation method thereof |
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