CN103787679A - Steel ladle permanent lining castable - Google Patents
Steel ladle permanent lining castable Download PDFInfo
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- CN103787679A CN103787679A CN201210436037.XA CN201210436037A CN103787679A CN 103787679 A CN103787679 A CN 103787679A CN 201210436037 A CN201210436037 A CN 201210436037A CN 103787679 A CN103787679 A CN 103787679A
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Abstract
The invention discloses a steel ladle permanent lining castable. The castable consists of the following components in parts by weight: 58-62 parts of waste magnesium brick, wherein the waste magnesium brick with grain size ranging from 8mm to 12mm accounts for 30%, the waste magnesium brick with grain size being less than 8mm and more than or equal to 3mm accounts for 50%, and the waste magnesium brick with grain size being more than or equal to 1mm and more than 3mm accounts for 20%, 18-22 parts of normal bauxite with grain size being less than or equal to 1mm, 14-16 parts of bentonite fine powder with grain size being less than 0.074mm, 3-5 parts of alumina micro powder with grain size being less than 0.074mm, 1-3 parts of mullite micro powder with grain size being less than 0.074mm, 4-6 parts of fused magnesite fine powder with grain size being less than 0.088mm, 1-2 parts of sodium hexametaphosphate and 7-9 parts of water, wherein the castable is prepared by mixing the raw materials.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of ladle permanent liner casting material.
Background technology
At present, worldwide, ladle permanent lining mainly contains two kinds of forms of construction work: the one, and the brick technique of early stage wet method, the 2nd, the pouring technology of taking in recent years.The former needs high alumina brick or magnesia brick and chamotte joint filling, and material cost is high, it is numerous and diverse to work, labour intensity is large, and globality is also bad, makes ladle use the later stage to have security hidden danger; The latter's good integrity, labour intensity reduce to some extent, but higher to ingredient requirement, and construction technology more need to increase the equipment such as mould, stirrer and vibrating motor as complexity, increase stirring, cast, vibration, health, bake process, whole expense is still higher, and be subject to the conditionalities such as region humidity, temperature, apply and be restricted.
From the research mould material paper delivered and the mould material of actual use, the material that ladle permanent liner casting material adopts has corundum, spinel, High-Alumina, mullite etc., adopt above-mentioned material as ladle permanent liner casting material, not only increase material cost and ton steel cost, and caused the significant wastage of resource.From the related application of having announced, also there is the research and development such as the reclaimed materials that adopts useless brick ladle permanent linings, the bonding agent of selecting is cement, although this permanent liner has guaranteed working strength to a certain extent, but because at high temperature easily causing mould material performance, cement worsens the danger that exists ladle and wear bag.
Summary of the invention
The object of the invention is to propose a kind of ladle permanent liner casting material, this mould material overcomes the defect of prior art, and by the proportioning of material component, makes permanent liner prepared by this mould material at high temperature still have higher intensity, and reduced cost.
For reaching this object, the present invention by the following technical solutions:
A kind of ladle permanent liner casting material, the raw material of this mould material is made up of following component in weight part: useless magnesia brick 58-62 part, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; Conventional aluminium alumina 18-22 part, particle diameter≤1mm; Wilkinite fine powder 14-16 part, particle diameter < 0.074mm; Alumina powder 3-5 part, particle diameter < 0.074mm; Mullite miropowder 1-3 part, particle diameter < 0.074mm; Electrosmelted magnesite clinker fine powder 4-6 part, particle diameter < 0.088mm; Sodium hexametaphosphate 99 1-2 part; Water 7-9 part; Described mould material is for mixing above-mentioned raw materials to make.
Preferably, the raw material of this mould material is made up of following component in weight part: useless magnesia brick 59-61 part, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; Conventional aluminium alumina 19-21 part, particle diameter≤1mm; Wilkinite fine powder 14.5-15.5 part, particle diameter < 0.074mm; Alumina powder 3.5-4.5 part, particle diameter < 0.074mm; Mullite miropowder 1.5-2.5 part, particle diameter < 0.074mm; Electrosmelted magnesite clinker fine powder 4.5-5.5 part, particle diameter < 0.088mm; Sodium hexametaphosphate 99 1.3-1.7 part; Water 7.5-8.5 part; Described mould material is for mixing above-mentioned raw materials to make.
Most preferably, the raw material of this mould material is made up of following component in weight part: 60 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 20 parts, conventional aluminium alumina, particle diameter≤1mm; 15 parts of wilkinite fine powders, particle diameter < 0.074mm; 4 parts of alumina powders, particle diameter < 0.074mm; 2 parts of mullite miropowders, particle diameter < 0.074mm; 5 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 1.5 parts of Sodium hexametaphosphate 99s; 8 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
The present invention has following beneficial effect:
1) the present invention will give up magnesia brick as major ingredient, realize the re-using of waste refractory materials, save energy, significantly reduce the cost of mould material, its blending powder has been carried out to a large amount of tests simultaneously, determine the collocation of above-mentioned the best, made to adopt the intensity of permanent liner prepared by this mould material to improve.
2) do not adopt cement, but employing wilkinite, and be equipped with the combination of alumina powder+mullite miropowder+electrofusion magnesia powder, can guarantee that mould material has enough withstand voltage and folding strengths at production temperature (1200 ℃), this mould material has certain resistance to fouling simultaneously, has guaranteed the smelting safety of ladle.
3) physical and chemical index of mould material of the present invention is for reaching: after 110 ℃ × 24h is dried, and compressive strength > 45Mpa, folding strength > 10Mpa.
Embodiment
Embodiment mono-
A kind of ladle permanent liner casting material, the raw material of this mould material is made up of following component in weight part: 58 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 22 parts, conventional aluminium alumina, particle diameter≤1mm; 14 parts of wilkinite fine powders, particle diameter < 0.074mm; 3 parts of alumina powders, particle diameter < 0.074mm; 3 parts of mullite miropowders, particle diameter < 0.074mm; 4 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 2 parts of Sodium hexametaphosphate 99s; 7 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
Embodiment bis-
A kind of ladle permanent liner casting material, the raw material of this mould material is made up of following component in weight part: 62 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 18 parts, conventional aluminium alumina, particle diameter≤1mm; 16 parts of wilkinite fine powders, particle diameter < 0.074mm; 3 parts of alumina powders, particle diameter < 0.074mm; 3 parts of mullite miropowders, particle diameter < 0.074mm; 4 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 2 parts of Sodium hexametaphosphate 99s; 7 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
Embodiment tri-
A kind of ladle permanent liner casting material, the raw material of this mould material is made up of following component in weight part: 59 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 21 parts, conventional aluminium alumina, particle diameter≤1mm; 14.5 parts of wilkinite fine powders, particle diameter < 0.074mm; 4.5 parts of alumina powders, particle diameter < 0.074mm; 1.5 parts of mullite miropowders, particle diameter < 0.074mm; 5.5 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 1.3 parts of Sodium hexametaphosphate 99s; 8.5 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
Embodiment tetra-
A kind of ladle permanent liner casting material, the raw material of this mould material is made up of following component in weight part: 61 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 19 parts, conventional aluminium alumina, particle diameter≤1mm; 15.5 parts of wilkinite fine powders, particle diameter < 0.074mm; 3.5 parts of alumina powders, particle diameter < 0.074mm; 2.5 parts of mullite miropowders, particle diameter < 0.074mm; 4.5 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 1.7 parts of Sodium hexametaphosphate 99s; 7.5 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
Embodiment five
A kind of ladle permanent liner casting material, the raw material of this mould material is made up of following component in weight part: 60 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 20 parts, conventional aluminium alumina, particle diameter≤1mm; 15 parts of wilkinite fine powders, particle diameter < 0.074mm; 4 parts of alumina powders, particle diameter < 0.074mm; 4 parts of mullite miropowders, particle diameter < 0.074mm; 5 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 1.5 parts of Sodium hexametaphosphate 99s; 8 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
Claims (3)
1. a ladle permanent liner casting material, it is characterized in that, the raw material of this mould material is made up of following component in weight part: useless magnesia brick 58-62 part, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; Conventional aluminium alumina 18-22 part, particle diameter≤1mm; Wilkinite fine powder 14-16 part, particle diameter < 0.074mm; Alumina powder 3-5 part, particle diameter < 0.074mm; Mullite miropowder 1-3 part, particle diameter < 0.074mm; Electrosmelted magnesite clinker fine powder 4-6 part, particle diameter < 0.088mm; Sodium hexametaphosphate 99 1-2 part; Water 7-9 part; Described mould material is for mixing above-mentioned raw materials to make.
2. a kind of ladle permanent liner casting material as claimed in claim 1, it is characterized in that, the raw material of this mould material is made up of following component in weight part: useless magnesia brick 59-61 part, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; Conventional aluminium alumina 19-21 part, particle diameter≤1mm; Wilkinite fine powder 14.5-15.5 part, particle diameter < 0.074mm; Alumina powder 3.5-4.5 part, particle diameter < 0.074mm; Mullite miropowder 1.5-2.5 part, particle diameter < 0.074mm; Electrosmelted magnesite clinker fine powder 4.5-5.5 part, particle diameter < 0.088mm; Sodium hexametaphosphate 99 1.3-1.7 part; Water 7.5-8.5 part; Described mould material is for mixing above-mentioned raw materials to make.
3. a kind of ladle permanent liner casting material as claimed in claim 2, it is characterized in that, the raw material of this mould material is made up of following component in weight part: 60 parts, useless magnesia brick, wherein particle diameter 8-12mm account for 30%, 8mm > particle diameter >=3mm account for 50%, 3mm > particle diameter >=1mm account for 20%; 20 parts, conventional aluminium alumina, particle diameter≤1mm; 15 parts of wilkinite fine powders, particle diameter < 0.074mm; 4 parts of alumina powders, particle diameter < 0.074mm; 2 parts of mullite miropowders, particle diameter < 0.074mm; 5 parts of electrosmelted magnesite clinker fine powders, particle diameter < 0.088mm; 1.5 parts of Sodium hexametaphosphate 99s; 8 parts, water; Described mould material is for mixing above-mentioned raw materials to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436037.XA CN103787679A (en) | 2012-11-03 | 2012-11-03 | Steel ladle permanent lining castable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436037.XA CN103787679A (en) | 2012-11-03 | 2012-11-03 | Steel ladle permanent lining castable |
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| Publication Number | Publication Date |
|---|---|
| CN103787679A true CN103787679A (en) | 2014-05-14 |
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| CN201210436037.XA Pending CN103787679A (en) | 2012-11-03 | 2012-11-03 | Steel ladle permanent lining castable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496500A (en) * | 2014-12-29 | 2015-04-08 | 通达耐火技术股份有限公司 | Castable for ladle and preparation method thereof |
| CN107140999A (en) * | 2017-06-02 | 2017-09-08 | 湖州知维技术服务有限公司 | A kind of industrial kiln recycling type basket pouring material |
| CN107140998A (en) * | 2017-06-02 | 2017-09-08 | 湖州知维技术服务有限公司 | Industrial kiln recycling type basket pouring material and its preparation technology |
-
2012
- 2012-11-03 CN CN201210436037.XA patent/CN103787679A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496500A (en) * | 2014-12-29 | 2015-04-08 | 通达耐火技术股份有限公司 | Castable for ladle and preparation method thereof |
| CN107140999A (en) * | 2017-06-02 | 2017-09-08 | 湖州知维技术服务有限公司 | A kind of industrial kiln recycling type basket pouring material |
| CN107140998A (en) * | 2017-06-02 | 2017-09-08 | 湖州知维技术服务有限公司 | Industrial kiln recycling type basket pouring material and its preparation technology |
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Application publication date: 20140514 |