CN103058691A - Medium-density high-alumina silicon carbide casting material - Google Patents
Medium-density high-alumina silicon carbide casting material Download PDFInfo
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- CN103058691A CN103058691A CN2013100292772A CN201310029277A CN103058691A CN 103058691 A CN103058691 A CN 103058691A CN 2013100292772 A CN2013100292772 A CN 2013100292772A CN 201310029277 A CN201310029277 A CN 201310029277A CN 103058691 A CN103058691 A CN 103058691A
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- silicon carbide
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Abstract
The invention discloses a medium-density high-alumina silicon carbide casting material. The medium-density high-alumina silicon carbide casting material comprises the following raw material components in parts by weight: 20-31 parts of high-alumina bauxite aggregate, 5-21 parts of 0-3mm high-alumina bauxite granules, 10-17 parts of high-alumina bauxite powder of not more than 180 meshes, 4-10 parts of anti-stripping additive, 3-5 parts of 0-3mm silicon carbide, 6-12 parts of silicon carbide of not more than 180 meshes, 10-30 parts of lightweight aggregate, 8-15 parts of bonding agent and 8-11 parts of water. The medium-density high-alumina silicon carbide casting material disclosed by the invention has the advantages of low heat conductivity, good thermal shock resistance and light weight.
Description
Technical field
The present invention relates to technical field of refractory materials, especially relate to a kind of middle density high alumina silicon carbide castable.
Background technology
Mould material is a kind of particulate state that adds a certain amount of wedding agent and make in refractory material and the mixture of powder material.Mould material has than high workability, is applicable to the unshape refractory with the pouring type moulding.Compare with other amorphous refractories, wedding agent and moisture content are higher in the mould material, and be better mobile, easy to use without sintering, can be selected used material and wedding agent according to working conditions, so range of application is wider.This mould material both can directly pour into the lining body and use, and can also pour into a mould or bumping method is made prefabricated section and used.
A kind of as mould material, the high alumina silicon carbide castable is take alumine and silicon carbide as aggregate and powder adds the prepared refractory castable of some wedding agents.This high alumina silicon carbide castable has than characteristics great, that physical strength is high, wear resistance is good, but its thermal shock resistance is slightly poor, mainly is used as the inner lining material of the various kilns such as boiler, blast funnace hot blast stove, process furnace, ceramic kiln.Because the thermal conductivity of this high alumina silicon carbide castable itself is larger, under the condition that satisfies intensity, use temperature and wear resisting property, usually adopt to increase mould material thickness or increase thermal protection layer and reduce heat lost by radiation, this is so that weight of equipment and volume increase, and materials consumption and cost increase.
Summary of the invention
The purpose of this invention is to provide a kind of middle density high alumina silicon carbide castable, it has, and thermal conductivity is low, thermal shock resistance is excellent, and lightweight characteristics.
The technical solution adopted in the present invention is: middle density high alumina silicon carbide castable, by weight, its feed composition is: 20 ~ 31 parts in alumine aggregate, and 5 ~ 21 parts of 0 ~ 3mm alumine particles are not more than 10 ~ 17 parts in 180 height of eye bauxitic clay powder, 4 ~ 10 parts of antistripping additives, 3 ~ 5 parts in 0 ~ 3mm silicon carbide is not more than 6 ~ 12 parts in 180 order silicon carbide, 10 ~ 30 parts of aglites, 8 ~ 15 parts of wedding agents, 8 ~ 11 parts in water.
The granularity of described alumine aggregate is a kind of among 3 ~ 5mm, 3 ~ 8mm, 3 ~ 10mm, the 3 ~ 20mm.
Described antistripping additive is for being not more than 180 purpose andaluzite powder or being not more than 180 purpose sillimanite powder.
Described aglite is one or more in corundum bollow ball, alumina hollow ball, the corundum-mullite hollow ball.
Described wedding agent is aluminous cement or high-alumina cement.
The density of described middle density high alumina silicon carbide castable is 1.8 ~ 2.3g/cm
3
The advantage that the present invention has is: middle density high alumina silicon carbide castable of the present invention has been introduced suitable aglite in the high alumina silicon carbide castable, make it have the advantages such as thermal conductivity is low, thermal shock resistance good, lightweight, be particularly suitable for being applied to various high-heat resistance shock resistant stoves, such as positions such as limestone kiln kiln hood and kiln tails, can reduce heat lost by radiation in the use procedure, reduce the energy and equipment dynamic consumption, play the effect that improves Working environment and energy-saving and emission-reduction.
Embodiment
Embodiment 1:
The preparation process of density high alumina silicon carbide castable comprises in being somebody's turn to do:
1) get the raw materials ready:
Alumine aggregate 23kg, granularity is: 3 ~ 5mm;
0 ~ 3mm alumine particle 5kg;
Be not more than 180 height of eye bauxitic clay powder 17kg;
Antistripping additive 4kg, this antistripping additive is for being not more than 180 purpose andaluzite powder;
0 ~ 3mm silicon carbide 5kg;
Be not more than 180 order silicon carbide 6kg;
Aglite 30kg, aglite is: 0 ~ 1mm corundum bollow ball;
Wedding agent 11kg, wedding agent is: aluminous cement;
Water 11kg.
2) after being proportioned, above-mentioned raw materials in stirrer, stirs, vibration casting, and density is 1.8 g/cm
3, form finished product 1.
Embodiment 2:
The preparation process of density high alumina silicon carbide castable comprises in being somebody's turn to do:
1) get the raw materials ready:
Alumine aggregate 20kg, granularity is: 3 ~ 8mm;
0 ~ 3mm alumine particle 16kg;
Be not more than 180 height of eye bauxitic clay powder 13kg;
Antistripping additive 6kg, this antistripping additive is for being not more than 180 purpose sillimanite powder;
0 ~ 3mm silicon carbide 3kg;
Be not more than 180 order silicon carbide 12kg;
Aglite 25kg, aglite is: 0 ~ 3mm alumina hollow ball;
Wedding agent 15kg, wedding agent is: high-alumina cement;
Water 9.1kg.
2) after being proportioned, above-mentioned raw materials in stirrer, stirs, vibration casting, and density is 1.9 g/cm
3, form finished product 2.
Embodiment 3:
The preparation process of density high alumina silicon carbide castable comprises in being somebody's turn to do:
1) get the raw materials ready:
Alumine aggregate 21kg, granularity is: 3 ~ 10mm;
0 ~ 3mm alumine particle 6kg;
Be not more than 180 height of eye bauxitic clay powder 13kg;
Antistripping additive 8kg, this antistripping additive is for being not more than 180 purpose sillimanite powder;
0 ~ 3mm silicon carbide 4kg;
Be not more than 180 order silicon carbide 9kg;
Aglite 20kg, aglite is: 0 ~ 5mm corundum-mullite hollow ball;
Wedding agent 9kg, wedding agent is: high-alumina cement;
Water 8.7kg.
2) after being proportioned, above-mentioned raw materials in stirrer, stirs, vibration casting, and density is 2.0 g/cm
3, form finished product 3.
Embodiment 4:
The preparation process of density high alumina silicon carbide castable comprises in being somebody's turn to do:
1) get the raw materials ready:
Alumine aggregate 31kg, granularity is: 3 ~ 10mm;
0 ~ 3mm alumine particle 9kg;
Be not more than 180 height of eye bauxitic clay powder 10kg;
Antistripping additive 8kg, this antistripping additive is for being not more than 180 purpose andaluzite powder;
0 ~ 3mm silicon carbide 3kg;
Be not more than 180 order silicon carbide 12kg;
Aglite 15kg, aglite is: 0 ~ 5mm corundum bollow ball 10kg part and 0 ~ 5mm alumina hollow ball 5kg;
Wedding agent 12kg, wedding agent is: aluminous cement;
Water 8.2kg.
2) after being proportioned, above-mentioned raw materials in stirrer, stirs, vibration casting, and density is 2.1 g/cm
3, form finished product 4.
Embodiment 5
The preparation process of density high alumina silicon carbide castable comprises in being somebody's turn to do:
1) get the raw materials ready:
Alumine aggregate 29kg, granularity is: 3 ~ 20mm;
0 ~ 3mm alumine particle 21kg;
Be not more than 180 height of eye bauxitic clay powder 11kg;
Antistripping additive 10kg, this antistripping additive is for being not more than 180 purpose andaluzite powder;
0 ~ 3mm silicon carbide 3kg;
Be not more than 180 order silicon carbide 8kg;
Aglite 10kg, aglite is: 0 ~ 5mm corundum bollow ball;
Wedding agent 8kg, wedding agent is: aluminous cement;
Water 8kg.
2) after being proportioned, above-mentioned raw materials in stirrer, stirs, vibration casting, and density is 2.3 g/cm
3, form finished product 5.
Embodiment 6:
Identical with embodiment 1, difference only is: aglite is: the mixture of any 2 kinds any proportioning in corundum bollow ball, alumina hollow ball, the corundum-mullite hollow ball.Prepared middle density high alumina silicon carbide castable density is 2.0 g/cm
3, form finished product 6.
Embodiment 7:
Identical with embodiment 3, difference only is: aglite is: the mixture of any proportioning of corundum bollow ball, alumina hollow ball, corundum-mullite hollow ball.。Prepared middle density high alumina silicon carbide castable density is 2.25 g/cm
3, form finished product 7.
The effect example:
Through the routine experiment, the performance perameter that various embodiments of the present invention form finished product sees the following form:
| The finished product sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Thermal conductivity (W/m.k) | 0.52 | 0.59 | 0.67 | 0.73 | 0.78 | 0.65 | 0.75 |
| Thermal shock resistance parameter (inferior) | 35 | 32 | 34 | 35 | 37 | 38 | 36 |
Wherein, the mensuration of thermal conductivity is carried out according to GB/T 5990-2006; The thermal shock resistance parametric measurement carries out according to YB4018-91.
As seen from the above table: because the thermal conductivity of common high alumina silicon carbide castable is 1.8 ~ 2.4 W/m.k, thermal shock resistance is more than 25 times, density is 2.5 ~ 2.8 g/cm
3, middle density high alumina silicon carbide castable of the present invention has the advantages such as thermal conductivity is low, thermal shock resistance good, lightweight.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. middle density high alumina silicon carbide castable, by weight, its feed composition is: 20 ~ 31 parts in alumine aggregate, and 5 ~ 21 parts of 0 ~ 3mm alumine particles are not more than 10 ~ 17 parts in 180 height of eye bauxitic clay powder, 4 ~ 10 parts of antistripping additives, 3 ~ 5 parts in 0 ~ 3mm silicon carbide is not more than 6 ~ 12 parts in 180 order silicon carbide, 10 ~ 30 parts of aglites, 8 ~ 15 parts of wedding agents, 8 ~ 11 parts in water.
2. middle density high alumina silicon carbide castable according to claim 1 is characterized in that: the granularity of described alumine aggregate is a kind of among 3 ~ 5mm, 3 ~ 8mm, 3 ~ 10mm, the 3 ~ 20mm.
3. middle density high alumina silicon carbide castable according to claim 1, it is characterized in that: described antistripping additive is for being not more than 180 purpose andaluzite powder or being not more than 180 purpose sillimanite powder.
4. middle density high alumina silicon carbide castable according to claim 1, it is characterized in that: described aglite is one or more in corundum bollow ball, alumina hollow ball, the corundum-mullite hollow ball.
5. middle density high alumina silicon carbide castable according to claim 1, it is characterized in that: described wedding agent is aluminous cement or high-alumina cement.
6. each described middle density high alumina silicon carbide castable in 5 according to claim 1, it is characterized in that: the density of described middle density high alumina silicon carbide castable is 1.8 ~ 2.3g/cm
3
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708841A (en) * | 2013-12-05 | 2014-04-09 | 山东耐材集团鲁耐窑业有限公司 | High strength and high thermal shock alumina bubble brick and preparation method thereof |
| CN107344857A (en) * | 2017-06-20 | 2017-11-14 | 长兴兴鹰新型耐火建材有限公司 | A kind of high-strength low heat conductivity fire resisting energy-conservation castable and preparation method thereof |
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| CN1994958A (en) * | 2006-12-19 | 2007-07-11 | 安徽省宁国市耐火材料有限责任公司 | Super intensified abrasion-proof pouring material |
| CN102101784A (en) * | 2011-02-22 | 2011-06-22 | 佘成其 | Lightweight reformed main iron runner pouring material |
| CN102503466A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Andalusite self-flow castable |
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2013
- 2013-01-25 CN CN2013100292772A patent/CN103058691A/en active Pending
Patent Citations (3)
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| CN1994958A (en) * | 2006-12-19 | 2007-07-11 | 安徽省宁国市耐火材料有限责任公司 | Super intensified abrasion-proof pouring material |
| CN102101784A (en) * | 2011-02-22 | 2011-06-22 | 佘成其 | Lightweight reformed main iron runner pouring material |
| CN102503466A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Andalusite self-flow castable |
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| 《2010年全国炼钢-连铸生产技术会议文集》 20101231 王征想 等 高强度刚玉碳化硅浇注料的研制 第542-545页 1-6 , * |
| 张战营 等: "莫来石结合刚玉-碳化硅质浇注料的组成与性能", 《耐火材料》, vol. 34, no. 06, 20 November 2000 (2000-11-20), pages 328 - 330 * |
| 王征想 等: "高强度刚玉碳化硅浇注料的研制", 《2010年全国炼钢—连铸生产技术会议文集》, 31 December 2010 (2010-12-31), pages 542 - 545 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708841A (en) * | 2013-12-05 | 2014-04-09 | 山东耐材集团鲁耐窑业有限公司 | High strength and high thermal shock alumina bubble brick and preparation method thereof |
| CN103708841B (en) * | 2013-12-05 | 2015-10-28 | 山东耐材集团鲁耐窑业有限公司 | High strength, high thermal shock alumina bubble brick and preparation method thereof |
| CN107344857A (en) * | 2017-06-20 | 2017-11-14 | 长兴兴鹰新型耐火建材有限公司 | A kind of high-strength low heat conductivity fire resisting energy-conservation castable and preparation method thereof |
| CN107344857B (en) * | 2017-06-20 | 2019-09-06 | 长兴兴鹰新型耐火建材有限公司 | A kind of high-strength low heat conductivity fire resisting energy conservation castable and preparation method thereof |
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Application publication date: 20130424 |