CN103011860A - Baking-free fireproofing brick and preparation method thereof - Google Patents
Baking-free fireproofing brick and preparation method thereof Download PDFInfo
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- CN103011860A CN103011860A CN2012105436200A CN201210543620A CN103011860A CN 103011860 A CN103011860 A CN 103011860A CN 2012105436200 A CN2012105436200 A CN 2012105436200A CN 201210543620 A CN201210543620 A CN 201210543620A CN 103011860 A CN103011860 A CN 103011860A
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- ferrovanadium dregs
- refractory brick
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Abstract
The invention discloses a baking-free fireproofing brick. The baking-free fireproofing brick comprises the following components in percentage by weight: 90-95% of vanadium iron slag, 5-10% of SiO2 micropowder and the balance of of phosphate, wherein the total mass of the vanadium iron slag and SiO2 are 100 parts; and the mass of phosphate is 0-14% of the total mass of the SiO2 micropowder. The invention also discloses a method of preparing the baking-free fireproofing brick. The method comprises the following steps of: A, preparing the vanadium iron slag, the SiO2 micropowder and the phosphate according to a predetermined proportion; B, adding water in the prepared materials and uniformly mixing, and performing compression moulding to obtain a brick blank; and C, after curing the brick blank at a temperature of 18-25 DEG C and a moisture condition of 85%-95%, and drying, thereby obtaining the baking-free fireproofing brick. The method provides a novel path of comprehensively using the vanadium iron slag, solves the problems of stacking and pollution of the vanadium iron, effectively uses waste slag resources, and is energy-saving and environment-friendly.
Description
Technical field
The present invention relates to the refractory materials in the field of metallurgy, more particularly, relate to a kind of unburned refractory brick and preparation method thereof.
Background technology
Ferrovanadium dregs is the metallurgical slag that produces when generating ferro-vanadium, two kinds of minute thermite process and silicothermic process, and wherein thermite process is the most general, and the generation of slag is maximum, and only Panzhihua Region just surpasses 50,000 tons, and its main component is that calcium aluminate phase, Spinel, corundum equate.Present processing mode is that part is sold on every side little factory's extraction residual vanadium wherein, and part is returned the knotting materials'use as furnace lining, exists serious ferrovanadium dregs to stack and pollution problem, both has been unfavorable for that environmental protection also was unfavorable for the recycling of resource.
Also having the technology utilize ferrovanadium dregs to prepare fire-resistant chamotte or refractory castable in the prior art, is the development and use of amorphous refractory product but it relates to, does not relate to and utilizes ferrovanadium dregs as the unburned refractory brick of main material production.
Summary of the invention
For the deficiencies in the prior art, one of purpose of the present invention is to solve the one or more problems that exist in the above-mentioned prior art.
The object of the present invention is to provide a kind of new way of ferrovanadium dregs comprehensive utilization, the problem of stacking and polluting to solve ferrovanadium dregs; Provide simultaneously a kind of unburned refractory brick and preparation method thereof, effectively to utilize residue resource, energy-conserving and environment-protective.
To achieve these goals, an aspect of of the present present invention provides a kind of unburned refractory brick, and by weight percentage, described unburned refractory brick comprises 90～95% ferrovanadium dregs, 5～10% SiO
2Micro mist and additionally with addition of phosphoric acid salt, wherein, ferrovanadium dregs and SiO
2The total mass of micro mist is 100 parts, and phosphatic quality is ferrovanadium dregs and SiO
20～1% of the total mass of micro mist.
An embodiment according to unburned refractory brick of the present invention, described 90～95% ferrovanadium dregs comprises the ferrovanadium dregs fine powder of particle in 45～55% ferrovanadium dregs coarse particles, 15～25% the ferrovanadium dregs and 15～25%, wherein, the coarse grained granularity of described ferrovanadium dregs is 1～5mm, the granularity of particle is 0.1～1mm in the described ferrovanadium dregs, the granularity＜0.045mm of described ferrovanadium dregs fine powder.
According to an embodiment of unburned refractory brick of the present invention, described SiO
2Granularity＜the 0.8mm of micro mist, wherein, SiO
2Content by weight percentage more than 95%.
According to an embodiment of unburned refractory brick of the present invention, described phosphoric acid salt is Sodium hexametaphosphate 99, sodium polyphosphate or tripoly phosphate sodium STPP.
Another aspect of the present invention provides a kind of method for preparing above-mentioned unburned refractory brick, said method comprising the steps of: A, with ferrovanadium dregs, SiO
2Micro mist and phosphoric acid salt are prepared burden according to preset blending ratio; B, add water and mixing in the raw material for preparing, compression moulding obtains adobe again; C, adobe drying after maintenance under 18～25 ℃ temperature, 85～95% the humidity condition 5～9 days is then obtained described unburned refractory brick.
An embodiment according to the method for the unburned refractory brick of preparation of the present invention, described method also is included in before the batching ferrovanadium dregs is obtained the step of particle and ferrovanadium dregs fine powder in ferrovanadium dregs coarse particles, the ferrovanadium dregs through broken, grinding and stage treatment, wherein, the coarse grained granularity of described ferrovanadium dregs is 1～5mm, the granularity of particle is 0.1～1mm in the described ferrovanadium dregs, the granularity＜0.045mm of described ferrovanadium dregs fine powder.
According to an embodiment of the method for the unburned refractory brick of preparation of the present invention, in the described step that adds the water mixing, by weight percentage, amount of water is controlled to be 4～5.5%.The invention provides a kind of new way of ferrovanadium dregs comprehensive utilization, solved the problem that ferrovanadium dregs is stacked and polluted, effectively utilized residue resource, energy-conserving and environment-protective.
Embodiment
Hereinafter, describe the present invention in detail in connection with specific embodiment.Unless otherwise noted, per-cent of the present invention all is weight percentage.
Main thought of the present invention is to utilize ferrovanadium dregs collocation SiO
2Micro mist is as the wedding agent of refractory brick, add mixing and dispersing property that phosphoric acid salt improves material, again by compression moulding with add wet curing, make try one's best aquation and produce intensity of wedding agent in the adobe, then drying forms, and unburned refractory brick of the present invention in use can reach the purpose of sintering.
By weight percentage, unburned according to an exemplary embodiment of the present invention refractory brick comprises 90～95% ferrovanadium dregs, 5～10% SiO
2Micro mist and additionally with addition of phosphoric acid salt, wherein, ferrovanadium dregs and SiO
2The total mass of micro mist is 100 parts, and phosphatic quality is ferrovanadium dregs and SiO
20～1% of the total mass of micro mist.Generally speaking, the main component of ferrovanadium dregs is aluminum oxide 60～75%, magnesium oxide 10～25%, calcium oxide 8～10%, and ferrovanadium dregs is the main component as refractory brick; And fine silica powder mainly works to replenish wedding agent; Phosphoric acid salt mainly plays the hydrating capacity of improving wedding agent and the effect of dispersion agent.The ratio of each component is the optimal components ratio that experience is used in the unburned refractory brick of the present invention.
Usually, the material matching of size fractionated uses the product that can obtain high compactness, and then improves strength property and the useful life longevity of product.Preferably, above-mentioned 90～95% ferrovanadium dregs comprises the ferrovanadium dregs fine powder of particle in 45～55% ferrovanadium dregs coarse particles, 15～25% the ferrovanadium dregs and 15～25%, wherein, the coarse grained granularity of described ferrovanadium dregs is 1～5mm, the granularity of particle is 0.1～1mm in the described ferrovanadium dregs, the granularity＜0.045mm of described ferrovanadium dregs fine powder.Wherein, ferrovanadium dregs coarse particles and middle particle mainly play the refractory brick aggregate, and the ferrovanadium dregs fine powder mainly plays micro mist and wedding agent.
SiO in the unburned refractory brick of the present invention
2Micro mist is to use as the wedding agent of refractory brick, in order to bring into play its maximum hydration activity, and improve compound flowability, improve the compactness of product, must adopt the micro mist shape, and cost is also lower.In one embodiment of the invention, SiO
2Granularity＜the 0.8mm of micro mist, wherein, SiO
2Content by weight percentage more than 95%.
Phosphatic effect in the unburned refractory brick of the present invention is mixing and the dispersing property that improves material.In general, adding phosphatic purpose is to improve the gelling property of gelling material, and phosphoric acid salt itself has gelling property, and can play the effect of dispersion agent.In one embodiment of the invention, phosphoric acid salt can be Sodium hexametaphosphate 99, sodium polyphosphate or tripoly phosphate sodium STPP etc.
Method according to the above-mentioned unburned refractory brick of preparation of the present invention said method comprising the steps of:
A, with ferrovanadium dregs, SiO
2Micro mist and phosphoric acid salt are prepared burden according to preset blending ratio.
B, add water and mixing in the raw material for preparing, compression moulding obtains adobe again.Preferably, by weight percentage, amount of water is controlled to be 4～5.5%, and the control amount of water is in order the needed moisture of adobe aquation to be provided and to make compound have certain viscosity, be convenient to brick pressing machine with its compression moulding as far as possible.
C, adobe drying after maintenance under 18～25 ℃ temperature, 85～95% the humidity condition 5～9 days is then obtained described unburned refractory brick.Preferably, with adobe maintenance dry getting final product after 7 days under 20 ℃ temperature, 90% humidity condition, with adobe under the above specified conditions the purpose of maintenance be to improve the intensity of adobe, make the gelling material of adobe inside that hydration reaction occur most possibly, to improve the performance of product.
In one embodiment of the invention, aforesaid method also is included in before the batching ferrovanadium dregs is obtained the step of particle and ferrovanadium dregs fine powder in ferrovanadium dregs coarse particles, the ferrovanadium dregs through broken, grinding and stage treatment.Wherein, the coarse grained granularity of ferrovanadium dregs is 1～5mm, and the granularity of particle is 0.1～1mm in the ferrovanadium dregs, the granularity＜0.045mm of ferrovanadium dregs fine powder.And then with particle and ferrovanadium dregs fine powder and SiO in varigrained ferrovanadium dregs coarse particles, the ferrovanadium dregs
2Micro mist and phosphoric acid salt are prepared burden according to above-mentioned preset blending ratio.Form of construction work according to unburned refractory brick of the present invention can be identical with common refractory brick, namely adopts building construction technique, adopts ferrovanadium dregs refractory mortar or High-Alumina refractory mortar as binding agent collocation use, and it in use can reach the purpose of sintering.
In order to understand better the present invention, further specify the present invention below in conjunction with concrete example.
Prepared four groups of unburned refractory brick corresponding to four examples shown in the table 1 according to above-mentioned preparation method, and four groups of unburned refractory brick and the on-the-spot unburned refractory brick that uses have been carried out performance comparison.The result shows that the performance index of the unburned refractory brick of four embodiment have all reached standard GB/T2988-2004 high alumina brick LZ-55 standard-required.
The proportioning of table 1 example 1 to 4 and performance comparison table
In sum, the property indices of unburned refractory brick of the present invention reaches standard GB/T2988-2004 high alumina brick LZ-55 standard-required, energy consumption is low in the production process, production cost is low, can replace the currently available productss such as clay brick, high alumina brick to use, and the marketing approach is wide.The more important thing is that this product makes the metallurgical slag resource obtain comprehensive utilization, turn waste into wealth to have preferably environmental benefit and social benefit.
The invention is not restricted to above-described embodiment, in the situation that does not break away from protection domain of the present invention, can carry out various changes and modifications.
Claims (7)
1. a unburned refractory brick is characterized in that, by weight percentage, described unburned refractory brick comprises 90～95% ferrovanadium dregs, 5～10% SiO
2Micro mist and additionally with addition of phosphoric acid salt, wherein, ferrovanadium dregs and SiO
2The total mass of micro mist is 100 parts, and phosphatic quality is ferrovanadium dregs and SiO
20～1% of the total mass of micro mist.
2. unburned refractory brick according to claim 1, it is characterized in that, described 90～95% ferrovanadium dregs comprises the ferrovanadium dregs fine powder of particle in 45～55% ferrovanadium dregs coarse particles, 15～25% the ferrovanadium dregs and 15～25%, wherein, the coarse grained granularity of described ferrovanadium dregs is 1～5mm, the granularity of particle is 0.1～1mm in the described ferrovanadium dregs, the granularity＜0.045mm of described ferrovanadium dregs fine powder.
3. unburned refractory brick according to claim 1 is characterized in that, described SiO
2Granularity＜the 0.8mm of micro mist, wherein, SiO
2Content by weight percentage more than 95%.
4. unburned refractory brick according to claim 1 is characterized in that, described phosphoric acid salt is Sodium hexametaphosphate 99, sodium polyphosphate or tripoly phosphate sodium STPP.
5. one kind prepares such as the method for unburned refractory brick as described in each in the claim 1 to 4, it is characterized in that, said method comprising the steps of:
A, with ferrovanadium dregs, SiO
2Micro mist and phosphoric acid salt are prepared burden according to preset blending ratio;
B, add water and mixing in the raw material for preparing, compression moulding obtains adobe again;
C, adobe drying after maintenance under 18～25 ℃ temperature, 85～95% the humidity condition 5～9 days is then obtained described unburned refractory brick.
6. the method for the unburned refractory brick of preparation according to claim 5, it is characterized in that, described method also is included in before the batching ferrovanadium dregs is obtained the step of particle and ferrovanadium dregs fine powder in ferrovanadium dregs coarse particles, the ferrovanadium dregs through broken, grinding and stage treatment, wherein, the coarse grained granularity of described ferrovanadium dregs is 1～5mm, the granularity of particle is 0.1～1mm in the described ferrovanadium dregs, the granularity＜0.045mm of described ferrovanadium dregs fine powder.
7. the method for the unburned refractory brick of preparation according to claim 5 is characterized in that, in the described step that adds the water mixing, by weight percentage, amount of water is controlled to be 4～5.5%.
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| CN2012105436200A CN103011860A (en) | 2012-12-14 | 2012-12-14 | Baking-free fireproofing brick and preparation method thereof |
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| CN2012105436200A CN103011860A (en) | 2012-12-14 | 2012-12-14 | Baking-free fireproofing brick and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461336A (en) * | 2016-01-13 | 2016-04-06 | 郴州联华耐火材料有限公司 | Method for preparing firebricks |
| CN113754451A (en) * | 2021-10-22 | 2021-12-07 | 辽宁工业大学 | Refractory brick prepared from industrial solid waste and preparation method thereof |
| CN114105581A (en) * | 2021-07-16 | 2022-03-01 | 冯振河 | Curing agent for road repairing by tailings dregs and brick making by tailings dregs and preparation method thereof |
| CN115946209A (en) * | 2022-12-08 | 2023-04-11 | 郑州宏瑞耐火材料有限公司 | Baking-free preparation method for refractory material |
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| CN101121609A (en) * | 2007-07-19 | 2008-02-13 | 张富财 | Baking-free hot-metal bottle lining brick |
| CN102145997A (en) * | 2011-05-05 | 2011-08-10 | 攀钢集团有限公司 | Refractory castable material containing ferrovanadium dregs |
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2012
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| CN101121609A (en) * | 2007-07-19 | 2008-02-13 | 张富财 | Baking-free hot-metal bottle lining brick |
| CN102145997A (en) * | 2011-05-05 | 2011-08-10 | 攀钢集团有限公司 | Refractory castable material containing ferrovanadium dregs |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461336A (en) * | 2016-01-13 | 2016-04-06 | 郴州联华耐火材料有限公司 | Method for preparing firebricks |
| CN105461336B (en) * | 2016-01-13 | 2018-05-29 | 郴州联华耐火材料有限公司 | The preparation method of refractory brick |
| CN114105581A (en) * | 2021-07-16 | 2022-03-01 | 冯振河 | Curing agent for road repairing by tailings dregs and brick making by tailings dregs and preparation method thereof |
| CN113754451A (en) * | 2021-10-22 | 2021-12-07 | 辽宁工业大学 | Refractory brick prepared from industrial solid waste and preparation method thereof |
| CN113754451B (en) * | 2021-10-22 | 2022-09-27 | 辽宁工业大学 | Refractory brick prepared from industrial solid waste and preparation method thereof |
| CN115946209A (en) * | 2022-12-08 | 2023-04-11 | 郑州宏瑞耐火材料有限公司 | Baking-free preparation method for refractory material |
| CN115946209B (en) * | 2022-12-08 | 2023-09-01 | 郑州宏瑞耐火材料有限公司 | Firing-free preparation method for refractory material |
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Application publication date: 20130403 |