CN104926325A - Ladle bottom castable and preparation method thereof - Google Patents
Ladle bottom castable and preparation method thereof Download PDFInfo
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- CN104926325A CN104926325A CN201510311418.9A CN201510311418A CN104926325A CN 104926325 A CN104926325 A CN 104926325A CN 201510311418 A CN201510311418 A CN 201510311418A CN 104926325 A CN104926325 A CN 104926325A
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- steel ladle
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Abstract
The invention relates to a ladle bottom castable and a preparation method thereof. The technical scheme is as follows: 60-70wt% of titanium-iron slag particles are taken as aggregate, and 25-35wt% of titanium-iron slag fine powder, 1-4wt% of zirconia micro powder and 2-5wt% of titanium oxide micro powder are taken as substrate materials; according to the content of the aggregate and the substrate materials, the substrate materials are uniformly mixed firstly, and then the uniformly mixed substrate materials are added to the aggregate to be uniformly mixed; silica sol accounting for 3-7wt% of the sum of the substrate materials and the aggregate is added, and the mixture is uniformly stirred, subjected to vibratory compaction, cured for 6-12 h under the condition of room temperature and finally subjected to heat preservation for 12-24 h under the condition of 90-110 DEG C to prepare the ladle bottom castable. The ladle bottom castable and the preparation method have the characteristics of low cost and simple process, and the prepared ladle bottom castable has good high-temperature volume stability and good corrosion resistance to slag.
Description
Technical field
The invention belongs to Refractory Carstables for Ladles technical field.Be specifically related to a kind of bottom of steel ladle mould material and preparation method thereof.
Background technology
Ladle is important warehousing and transportation facilities and smelting equipment in Iron And Steel Industry.Bottom of steel ladle refractory materials bears washing away of steel stream and causes structure spalling and slag corrosion with the flowing of molten steel in steelmaking process, make the work-ing life of wrapping end refractory materials far below positions such as bag wall and slag lines, also certain hidden danger is caused to the safety in production of hot industry simultaneously.
At present, Fireproof material for steel ladle bottom is mainly the mould material of the magnalium system such as " corundum-spinel pouring material " and " high purity aluminium oxide-spinel mould material/prefabricated component ".
Adopt " corundum-spinel pouring material " as Fireproof material for steel ladle bottom, its refractoriness is high and mechanical behavior under high temperature is excellent, especially corundum and spinel difference of thermal expansion coefficients obviously, can relax the thermal stresses of refractory materials inside in MOLTEN STEEL FLOW process preferably; Adopt " corundum-spinel pouring material " as Fireproof material for steel ladle bottom, although the tiny crack that difference of thermal expansion coefficients can be utilized to cause is to alleviate the thermal stresses of material internal, the existence of tiny crack also greatly reduces the slag-resistant erosion/penetrating quality of refractory materials.
Adopt " high purity aluminium oxide-spinel mould material/prefabricated component ", aluminum oxide original position can be utilized to form spinel, and cause certain volumetric expansion, strengthen the densification degree of refractory materials, improve the ability of the erosion of refractory materials slag-resistant and infiltration; Adopt " high purity aluminium oxide-spinel mould material/prefabricated component ", the speed of reaction that its original position forms spinel is very fast, is difficult to be evenly distributed, and causes the damage of bag end refractory materials differential expansion obviously (" bulge " phenomenon).
In addition, the cost of the refractory raw materials such as corundum, high purity aluminium oxide and high-purity spinel is all higher, improves the cost of development of bag end refractory materials, thus reduces the competitive power of bag end refractory materials.
Summary of the invention
The present invention is intended to overcome prior art defect, and object is to provide a kind of preparation method of with low cost, the simple bottom of steel ladle mould material of technique, and high volume good stability and the anti-scour property of the bottom of steel ladle mould material prepared by the method are strong.
For achieving the above object, the technical solution adopted in the present invention is: with the ferrotianium solid impurity particle of 60 ~ 70wt% for aggregate, with the titanium oxide fine powder of the zirconium white micro mist of the ferrotianium slag fine powder of 25 ~ 35wt%, 1 ~ 4wt% and 2 ~ 5wt% for substrate material; By the content of described aggregate and described substrate material, first substrate material is mixed, then the substrate material after mixing is added in described aggregate, mix; Then add the silicon sol accounting for described substrate material and described aggregate sum 3 ~ 7wt%, stir, vibratory compaction, maintenance 6 ~ 12 hours under room temperature condition, finally under 90 ~ 110 DEG C of conditions, be incubated 12 ~ 24h, obtained bottom of steel ladle mould material.
The slag that described ferrotianium slag produces for smelting ferro-titanium, the dominant of ferrotianium slag is titanium calcium aluminate, corundum, calcium hexaluminate, Calcium dialuminate and calcium titanate mutually; Wherein: Al
2o
3content is 70 ~ 80wt%, TiO
2content is 10 ~ 15wt%, CaO content is 10 ~ 15wt%, Fe
2o
3content < 2wt%.
The granularity of described ferrotianium solid impurity particle is 8 ~ 0.1mm.
The granularity of described ferrotianium slag fine powder is 0.1 ~ 0.088mm.
The ZrO of described zirconium white micro mist
2content > 99wt%, grain diameter is 1 ~ 2 μm.
The TiO of described titanium oxide fine powder
2content > 99wt%, grain diameter is 1 ~ 2 μm.
The SiO of described silicon sol
2content is 20 ~ 30wt%.
Owing to taking technique scheme, the present invention compared with prior art has following positively effect:
1, the present invention adopts ferrotianium slag to be main raw material, greatly reduces the cost of development of bottom of steel ladle mould material.
2, the present invention is without the need to special Preparation equipment and treatment technology, and save human resources, technical process is simple.
3, the present invention utilize the thing phase reaction under high temperature between ferrotianium slag component to cause volume effect to alleviate the thermal stresses of mould material inside, and then improve high volume stability and the resistance to slag corrosion of mould material.
Bottom of steel ladle mould material prepared by the present invention is after measured: after 1550 DEG C × 3h burns, Linear change rate is-0.05 ~-0.1%; 1550 DEG C of Static crucible method anti-slag experiment erosion index are 8 ~ 15%.
Therefore, the present invention has the with low cost and simple feature of technique; Prepared bottom of steel ladle mould material high volume good stability and anti-scour property strong.
Embodiment
Below in conjunction with embodiment, the invention will be further described, the restriction not to its protection domain.
For avoiding repetition, first by as follows for the raw material Unify legislation involved by this embodiment, repeat no more in embodiment:
The slag that described ferrotianium slag produces for smelting ferro-titanium, the dominant of ferrotianium slag is titanium calcium aluminate, corundum, calcium hexaluminate, Calcium dialuminate and calcium titanate mutually; Wherein: Al
2o
3content is 70 ~ 80wt%, TiO
2content is 10 ~ 15wt%, CaO content is 10 ~ 15wt%, Fe
2o
3content < 2wt%.
The granularity of described ferrotianium solid impurity particle is 8 ~ 0.1mm.
The granularity of described ferrotianium slag fine powder is 0.1 ~ 0.088mm.
The ZrO of described zirconium white micro mist
2content > 99wt%, grain diameter is 1 ~ 2 μm.
The TiO of described titanium oxide fine powder
2content > 99wt%, grain diameter is 1 ~ 2 μm.
The SiO of described silicon sol
2content is 20 ~ 30wt%.
embodiment 1
A kind of bottom of steel ladle mould material and preparation method thereof.The preparation method of described bottom of steel ladle mould material is: with the ferrotianium solid impurity particle of 60 ~ 64wt% for aggregate, with the titanium oxide fine powder of the zirconium white micro mist of the ferrotianium slag fine powder of 31 ~ 35wt%, 1 ~ 3wt% and 2 ~ 4wt% for substrate material; By the content of described aggregate and described substrate material, first substrate material is mixed, then the substrate material after mixing is added in described aggregate, mix; Then add the silicon sol accounting for described substrate material and described aggregate sum 3 ~ 4wt%, stir, vibratory compaction, maintenance 6 ~ 12 hours under room temperature condition, finally under 90 ~ 110 DEG C of conditions, be incubated 12 ~ 24h, obtained bottom of steel ladle mould material.
Bottom of steel ladle mould material prepared by the present embodiment is after testing: after 1550 DEG C × 3h burns, line is changed to-0.08 ~-0.1; 1550 DEG C of Static crucible method anti-slag experiment erosion index are 11 ~ 15%.
embodiment 2
A kind of bottom of steel ladle mould material and preparation method thereof.The preparation method of described bottom of steel ladle mould material is: with the ferrotianium solid impurity particle of 62 ~ 66wt% for aggregate, with the titanium oxide fine powder of the zirconium white micro mist of the ferrotianium slag fine powder of 29 ~ 33wt%, 2 ~ 4wt% and 3 ~ 5wt% for substrate material; By the content of described aggregate and described substrate material, first substrate material is mixed, then the substrate material after mixing is added in described aggregate, mix; Then add the silicon sol accounting for described substrate material and described aggregate sum 4 ~ 5wt%, stir, vibratory compaction, maintenance 6 ~ 12 hours under room temperature condition, finally under 90 ~ 110 DEG C of conditions, be incubated 12 ~ 24h, obtained bottom of steel ladle mould material.
Bottom of steel ladle mould material prepared by the present embodiment is after testing: after 1550 DEG C × 3h burns, line is changed to-0.07 ~-0.09; 1550 DEG C of Static crucible method anti-slag experiment erosion index are 10 ~ 14%.
embodiment 3
A kind of bottom of steel ladle mould material and preparation method thereof.The preparation method of described bottom of steel ladle mould material is: with the ferrotianium solid impurity particle of 64 ~ 68wt% for aggregate, with the titanium oxide fine powder of the zirconium white micro mist of the ferrotianium slag fine powder of 27 ~ 31wt%, 1 ~ 3wt% and 2 ~ 4wt% for substrate material; By the content of described aggregate and described substrate material, first substrate material is mixed, then the substrate material after mixing is added in described aggregate, mix; Then add the silicon sol accounting for described substrate material and described aggregate sum 5 ~ 6wt%, stir, vibratory compaction, maintenance 6 ~ 12 hours under room temperature condition, finally under 90 ~ 110 DEG C of conditions, be incubated 12 ~ 24h, obtained bottom of steel ladle mould material.
Bottom of steel ladle mould material prepared by the present embodiment is after testing: after 1550 DEG C × 3h burns, line is changed to-0.06 ~-0.08; 1550 DEG C of Static crucible method anti-slag experiment erosion index are 9 ~ 13%.
embodiment 4
A kind of bottom of steel ladle mould material and preparation method thereof.The preparation method of described bottom of steel ladle mould material is: with the ferrotianium solid impurity particle of 66 ~ 70wt% for aggregate, with the titanium oxide fine powder of the zirconium white micro mist of the ferrotianium slag fine powder of 25 ~ 29wt%, 2 ~ 4wt% and 3 ~ 5wt% for substrate material; By the content of described aggregate and described substrate material, first substrate material is mixed, then the substrate material after mixing is added in described aggregate, mix; Then add the silicon sol accounting for described substrate material and described aggregate sum 6 ~ 7wt%, stir, vibratory compaction, maintenance 6 ~ 12 hours under room temperature condition, finally under 90 ~ 110 DEG C of conditions, be incubated 12 ~ 24h, obtained bottom of steel ladle mould material.
Bottom of steel ladle mould material prepared by the present embodiment is after testing: after 1550 DEG C × 3h burns, line is changed to-0.05 ~-0.07; 1550 DEG C of Static crucible method anti-slag experiment erosion index are 8 ~ 12%.
This embodiment compared with prior art has following positively effect:
1, this embodiment adopts ferrotianium slag to be main raw material, greatly reduces the cost of development of bottom of steel ladle mould material.
2, this embodiment is without the need to special Preparation equipment and treatment technology, and save human resources, technical process is simple.
3, this embodiment utilize the thing phase reaction under high temperature between ferrotianium slag component to cause volume effect to alleviate the thermal stresses of mould material inside, and then improve high volume stability and the resistance to slag corrosion of mould material.
Bottom of steel ladle mould material prepared by this embodiment is after measured: after 1550 DEG C × 3h burns, Linear change rate is-0.05 ~-0.1%; 1550 DEG C of Static crucible method anti-slag experiment erosion index are 8 ~ 15%.
Therefore, this embodiment has the with low cost and simple feature of technique; Prepared bottom of steel ladle mould material high volume good stability and anti-scour property strong.
Claims (8)
1. a preparation method for bottom of steel ladle mould material, is characterized in that with the ferrotianium solid impurity particle of 60 ~ 70wt% for aggregate, with the titanium oxide fine powder of the zirconium white micro mist of the ferrotianium slag fine powder of 25 ~ 35wt%, 1 ~ 4wt% and 2 ~ 5wt% for substrate material; By the content of described aggregate and described substrate material, first substrate material is mixed, then the substrate material after mixing is added in described aggregate, mix; Then add the silicon sol accounting for described substrate material and described aggregate sum 3 ~ 7wt%, stir, vibratory compaction, maintenance 6 ~ 12 hours under room temperature condition, finally under 90 ~ 110 DEG C of conditions, be incubated 12 ~ 24h, obtained bottom of steel ladle mould material.
2. the preparation method of bottom of steel ladle mould material according to claim 1, it is characterized in that the slag that described ferrotianium slag produces for smelting ferro-titanium, the dominant of ferrotianium slag is titanium calcium aluminate, corundum, calcium hexaluminate, Calcium dialuminate and calcium titanate mutually; Wherein: Al
2o
3content is 70 ~ 80wt%, TiO
2content is 10 ~ 15wt%, CaO content is 10 ~ 15wt%, Fe
2o
3content < 2wt%.
3. the preparation method of bottom of steel ladle mould material according to claim 1, is characterized in that the granularity of described ferrotianium solid impurity particle is 8 ~ 0.1mm.
4. the preparation method of bottom of steel ladle mould material according to claim 1, is characterized in that the granularity of described ferrotianium slag fine powder is 0.1 ~ 0.088mm.
5. the preparation method of bottom of steel ladle mould material according to claim 1, is characterized in that the ZrO of described zirconium white micro mist
2content > 99wt%, grain diameter is 1 ~ 2 μm.
6. the preparation method of bottom of steel ladle mould material according to claim 1, is characterized in that the TiO of described titanium oxide fine powder
2content > 99wt%, grain diameter is 1 ~ 2 μm.
7. the preparation method of bottom of steel ladle mould material according to claim 1, is characterized in that the SiO of described silicon sol
2content is 20 ~ 30wt%.
8. a bottom of steel ladle mould material, is characterized in that described bottom of steel ladle mould material is the bottom of steel ladle mould material prepared by preparation method of the bottom of steel ladle mould material according to any one of claim 1 ~ 7.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609872A (en) * | 2015-01-12 | 2015-05-13 | 马鞍山利尔开元新材料有限公司 | Titanium-containing calcium aluminate-high alumina bauxite modified refractory material, as well as preparation method and application thereof |
| CN106365660A (en) * | 2016-11-21 | 2017-02-01 | 武汉科技大学 | Titanium calcium aluminate castable with middle wrap and permanent layer and preparation method thereof |
| CN106554194A (en) * | 2016-11-21 | 2017-04-05 | 武汉科技大学 | A kind of ceramsite sand rotary kiln liner and preparation method thereof |
| CN106747363A (en) * | 2016-11-16 | 2017-05-31 | 武汉科技大学 | A kind of chromite calcination rotary kiln working lining castable and preparation method thereof |
| CN106747526A (en) * | 2017-03-01 | 2017-05-31 | 武汉科技大学 | A kind of Al2O3‑TiO2CaO systems complex phase fireclay insulating refractory and preparation method thereof |
| CN106882973A (en) * | 2017-03-01 | 2017-06-23 | 武汉科技大学 | A kind of fireclay insulating refractory with ferrotianium slag as major ingredient and preparation method thereof |
| CN107056309A (en) * | 2017-04-07 | 2017-08-18 | 武汉科技大学 | A kind of Al2O3‑TiO2CaO matter gravity flow pouring materials and preparation method thereof |
| CN105541359B (en) * | 2016-01-18 | 2018-01-12 | 武汉科技大学 | A kind of ladle splash guard castable refractory and preparation method thereof |
| CN105669220B (en) * | 2016-01-05 | 2018-02-09 | 武汉科技大学 | A kind of Ausmelt furnace liner regeneration alumina chrome brick and preparation method thereof |
| CN108409344A (en) * | 2018-05-24 | 2018-08-17 | 武汉科技大学 | A kind of circulating fluid bed boiler top wear-resistant castable and preparation method thereof |
| CN108424129A (en) * | 2018-04-27 | 2018-08-21 | 武汉科技大学 | A kind of heat insulation and wear resistance castable refractory and preparation method thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609872A (en) * | 2015-01-12 | 2015-05-13 | 马鞍山利尔开元新材料有限公司 | Titanium-containing calcium aluminate-high alumina bauxite modified refractory material, as well as preparation method and application thereof |
| CN104609872B (en) * | 2015-01-12 | 2016-06-15 | 马鞍山利尔开元新材料有限公司 | Modified refractory material of a kind of titanium calcium aluminate-alumine and its preparation method and application |
| CN105669220B (en) * | 2016-01-05 | 2018-02-09 | 武汉科技大学 | A kind of Ausmelt furnace liner regeneration alumina chrome brick and preparation method thereof |
| CN105541359B (en) * | 2016-01-18 | 2018-01-12 | 武汉科技大学 | A kind of ladle splash guard castable refractory and preparation method thereof |
| CN106747363A (en) * | 2016-11-16 | 2017-05-31 | 武汉科技大学 | A kind of chromite calcination rotary kiln working lining castable and preparation method thereof |
| CN106747363B (en) * | 2016-11-16 | 2019-04-26 | 武汉科技大学 | A kind of chromite calcination rotary kiln working lining castable and preparation method thereof |
| CN106554194A (en) * | 2016-11-21 | 2017-04-05 | 武汉科技大学 | A kind of ceramsite sand rotary kiln liner and preparation method thereof |
| CN106365660A (en) * | 2016-11-21 | 2017-02-01 | 武汉科技大学 | Titanium calcium aluminate castable with middle wrap and permanent layer and preparation method thereof |
| CN106365660B (en) * | 2016-11-21 | 2019-04-26 | 武汉科技大学 | A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof |
| CN106747526A (en) * | 2017-03-01 | 2017-05-31 | 武汉科技大学 | A kind of Al2O3‑TiO2CaO systems complex phase fireclay insulating refractory and preparation method thereof |
| CN106882973A (en) * | 2017-03-01 | 2017-06-23 | 武汉科技大学 | A kind of fireclay insulating refractory with ferrotianium slag as major ingredient and preparation method thereof |
| CN107056309A (en) * | 2017-04-07 | 2017-08-18 | 武汉科技大学 | A kind of Al2O3‑TiO2CaO matter gravity flow pouring materials and preparation method thereof |
| CN108424129A (en) * | 2018-04-27 | 2018-08-21 | 武汉科技大学 | A kind of heat insulation and wear resistance castable refractory and preparation method thereof |
| CN108424129B (en) * | 2018-04-27 | 2020-12-18 | 武汉科技大学 | Heat-insulating wear-resistant refractory castable and preparation method thereof |
| CN108409344A (en) * | 2018-05-24 | 2018-08-17 | 武汉科技大学 | A kind of circulating fluid bed boiler top wear-resistant castable and preparation method thereof |
| CN108409344B (en) * | 2018-05-24 | 2020-10-13 | 武汉科技大学 | Circulating fluidized bed boiler top wear-resistant castable and preparation method thereof |
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