CN103833388A - High-wear-resistance pleonaste brick and preparation method thereof - Google Patents
High-wear-resistance pleonaste brick and preparation method thereof Download PDFInfo
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- CN103833388A CN103833388A CN201210513234.7A CN201210513234A CN103833388A CN 103833388 A CN103833388 A CN 103833388A CN 201210513234 A CN201210513234 A CN 201210513234A CN 103833388 A CN103833388 A CN 103833388A
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- spinel
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Abstract
The invention discloses a high-wear-resistance pleonaste brick and a preparation method thereof, belonging to the field of refractory bricks. The high-wear-resistance pleonaste brick is prepared from a main material and an additive, wherein the main material comprises the following components in percentage by weight: 27-32% of sintered high-iron magnesite with the particle size of greater than 1mm and smaller than or equal to 4mm, 6-10% of sintered high-iron magnesite with the particle size of greater than 0.088mm and smaller than or equal to 1mm, 10-15% of sintered high-iron magnesite with the particle size of smaller than or equal to 0.088mm, 22-30% of electrofused high-iron magnesite with the particle size of greater than 1mm and smaller than or equal to 4mm, 8-11% of electrofused high-iron magnesite with the particle size of greater than 0.088mm and smaller than or equal to 1mm, 9-12% of electrofused high-iron magnesite with the particle size of smaller than or equal to 0.088mm and 5-15% of electrofused spinel with the particle size of smaller than or equal to 0.088mm; and the additive is 1.18-1.25 g/cm<3> spent pulp liquor which accounts for 3-6 wt% of the main material. The method enhances the compressive strength, wear resistance and product life.
Description
Technical field
The invention belongs to refractory brick field, especially relate to a kind of high abrasion mafic spinel brick and preparation method thereof.
Background technology
4000 tons of above large-scale dry-process cement rotary kiln clinkering zone positions of at present daily output alkalescence used directly in conjunction with magnesia chrome brick work-ing life less than 1 year, and the hexavalent chromium polluted content of residual brick is high, causes the broken ring of environment and pollutes; And toughness is poor, property is crisp, easily bursts.The mafic spinel brick of later development is the refractory materials to replace magnesia chrome spinel to manufacture containing the magnesium iron sand of pleonast(e), and its advantage is that to hang kliner coating performance good, and principle is the Fe in CaO and magnesium grey iron block in cement clinker
2o
3effect, generates low melting point C
2f, has good wetting action to periclasite, bond under certain condition cement clinker and magnesite refractory, and sticky wrap more grog, and form firm kliner coating, can obtain the longer life-span with this.But its hardness is not high, and wear resisting property is inadequate.
Summary of the invention
The object of the invention is to solve problems of the prior art, a kind of high abrasion mafic spinel brick is provided.
The present invention can be achieved through the following technical solutions: a kind of high abrasion mafic spinel brick, is prepared from by following major ingredient and additive:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia: 4 mm >=granularity >, 1 mm, 27～32%; 1 mm >=granularity >, 0.088 mm, 6～10%, granularity≤0.088 mm, 10～15%;
Electric smelting high ferro magnesia: 4 mm >=granularity >, 1 mm, 22～30%, 1 mm >=granularity >, 0.088 mm, 8～11%; Granularity≤0.088 mm, 9～12%;
Electric smelting spinel: granularity≤0.088 mm, 5～15%;
B, described additive: spent pulping liquor, concentration is 1.18～1.25g/cm
3, be 3～6% of described major ingredient weight.
Wherein, the physical and chemical index of described sintering high ferro magnesia is: MgO>=92%, Fe
2o
35～6%, SiO
2≤ 0.8%, CaO1.2～2%; Volume density>=3.28g/cm
3, phase composite is that periclasite is or/and spinel.
The physical and chemical index of described electric smelting high ferro magnesia is: MgO>=92%, Fe
2o
35～6%, SiO
2≤ 0.7%, CaO1.2～2%; Volume density>=3.45g/cm
3, phase composite is that periclasite is or/and spinel.
The physical and chemical index of described electric molten magnesite hercynite is: MgO accounts for 20.16%, Fe
2o
3account for 79.84%; Hardness is 7.8, relative density 4.1.
The present invention also provides a kind of preparation method of high abrasion mafic spinel brick.
A preparation method for high abrasion mafic spinel brick, comprises the steps:
The first step, above-mentioned major ingredient and additive are carried out to mixed grind make pug, be placed in 1000t level friction press and obtain adobe by the compression moulding of required brick type;
Second step, the adobe that the first step is made are placed in dry kiln carries out drying treatment, and drying temperature is 100 ~ 180 DEG C, 10 ~ 20 hours time of drying.
The 3rd step, dried second step adobe is fired in tunnel furnace to 1650 DEG C～1780 DEG C of firing temperatures, 70～80 hours firing times.
Beneficial effect of the present invention:
In grain grade proportion of the present invention, coarse aggregate proportion is larger, and has improved the hardness of material; Improved the purity of raw material simultaneously, adopt the compact refractory material technology of high pressure-temperature moulding, reduced the apparent porosity of product, improved compressive strength, refractoriness under load and the thermal shock resistance of product, improved the wear resisting property of product to kiln material, can reach 12 months work-ing life.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1
A kind of high abrasion mafic spinel brick, is prepared from by following major ingredient and additive:
The weight percent proportioning of a, described major ingredient is: sintering high ferro magnesia: 4 mm >=granularity >, 1 mm, 27%; 1 mm >=granularity >, 0.088 mm, 10%, granularity≤0.088 mm, 10%; Electric smelting high ferro magnesia: 4 mm >=granularity >, 1 mm, 23%, 1 mm >=granularity >, 0.088 mm, 8%; Granularity≤0.088 mm, 9%; Electric smelting spinel: granularity≤0.088 mm, 13%;
B, described additive: spent pulping liquor (commercially available), concentration is 1.19g/cm
3, be 3.5% of described major ingredient weight.
Wherein, the physical and chemical index of described sintering high ferro magnesia is: MgO 92.5%, Fe
2o
35%, SiO
20.8%, CaO 1.7%; Volume density 3.28g/cm
3, phase composite is periclasite and spinel.
The physical and chemical index of described electric smelting high ferro magnesia is: MgO 92.3%, Fe
2o
35.5%, SiO
20.7%, CaO 1.5%; Volume density 3.45g/cm
3, phase composite is periclasite and spinel.
The physical and chemical index of described electric molten magnesite hercynite is: MgO accounts for 20.16%, Fe
2o
3account for 79.84%; Hardness is 7.8, relative density 4.1.
The preparation method of high abrasion mafic spinel brick, comprises the steps:
The first step, above-mentioned major ingredient and additive are carried out to mixed grind make pug, be placed in 1000t level friction press and obtain adobe by the compression moulding of required brick type;
Second step, the adobe that the first step is made are placed in dry kiln carries out drying treatment, and drying temperature is 100 DEG C, 18 hours time of drying.
The 3rd step, dried second step adobe is fired in tunnel furnace to 1650 DEG C of firing temperatures, 80 hours firing times.
Embodiment 2
A kind of high abrasion mafic spinel brick, is prepared from by following major ingredient and additive:
The weight percent proportioning of a, described major ingredient is: sintering high ferro magnesia: 4 mm >=granularity >, 1 mm, 30%; 1 mm >=granularity >, 0.088 mm, 6%, granularity≤0.088 mm, 13%; Electric smelting high ferro magnesia: 4 mm >=granularity >, 1 mm, 25%, 1 mm >=granularity >, 0.088 mm, 10%; Granularity≤0.088 mm, 10%; Electric smelting spinel: granularity≤0.088 mm, 6%;
B, described additive: spent pulping liquor (commercially available), concentration is 1.25g/cm
3, be 5.4% of described major ingredient weight.
Wherein, the physical and chemical index of described sintering high ferro magnesia is: MgO 93.2%, Fe
2o
35%, SiO
20.5%, CaO 1.3%; Volume density 3.30g/cm
3, phase composite is periclasite.
The physical and chemical index of described electric smelting high ferro magnesia is: MgO 92.8%, Fe
2o
35.3%, SiO
20.6%, CaO 1.3%; Volume density 3.49g/cm
3, phase composite is periclasite.
The physical and chemical index of described electric molten magnesite hercynite is: MgO accounts for 20.16%, Fe
2o
3account for 79.84%; Hardness is 7.8, relative density 4.1.
The preparation method of high abrasion mafic spinel brick, comprises the steps:
The first step, above-mentioned major ingredient and additive are carried out to mixed grind make pug, be placed in 1000t level friction press and obtain adobe by the compression moulding of required brick type;
Second step, the adobe that the first step is made are placed in dry kiln carries out drying treatment, and drying temperature is 150 DEG C, 15 hours time of drying.
The 3rd step, dried second step adobe is fired in tunnel furnace to 1700 DEG C of firing temperatures, 75 hours firing times.
Embodiment 3
A kind of high abrasion mafic spinel brick, is prepared from by following major ingredient and additive:
The weight percent proportioning of a, described major ingredient is: sintering high ferro magnesia: 4 mm >=granularity >, 1 mm, 32%; 1 mm >=granularity >, 0.088 mm, 7%, granularity≤0.088 mm, 11%; Electric smelting high ferro magnesia: 4 mm >=granularity >, 1 mm, 28%, 1 mm >=granularity >, 0.088 mm, 8%; Granularity≤0.088 mm, 9%; Electric smelting spinel: granularity≤0.088 mm, 5%;
B, described additive: spent pulping liquor (commercially available), concentration is 1.22g/cm
3, be 4.5% of described major ingredient weight.
Wherein, the physical and chemical index of described sintering high ferro magnesia is: MgO 92.4%, Fe
2o
35%, SiO
20.7%, CaO 1.9%; Volume density 3.32g/cm
3, phase composite is periclasite.
The physical and chemical index of described electric smelting high ferro magnesia is: MgO 92.6%, Fe
2o
35%, SiO
20.7%, CaO 1.7%; Volume density 3.48g/cm
3, phase composite is spinel.
The physical and chemical index of described electric molten magnesite hercynite is: MgO accounts for 20.16%, Fe
2o
3account for 79.84%; Hardness is 7.8, relative density 4.1.
A preparation method for high abrasion mafic spinel brick, comprises the steps:
The first step, above-mentioned major ingredient and additive are carried out to mixed grind make pug, be placed in 1000t level friction press and obtain adobe by the compression moulding of required brick type;
Second step, the adobe that the first step is made are placed in dry kiln carries out drying treatment, and drying temperature is 160 DEG C, 14 hours time of drying.
The 3rd step, dried second step adobe is fired in tunnel furnace to 1750 DEG C of firing temperatures, 70 hours firing times.
High abrasion mafic spinel brick (embodiment 1～3) contrasts as following table with the physicochemical property of existing mafic spinel brick:
| Project | Mafic spinel brick | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| MgO％ | 85 | 88 | 90 | 90 |
| SiO 2 | 2.0 | 1.6 | 1.5 | 1.4 |
| Fe 2O 3 | 7.5 | 6.0 | 4.5 | 5 |
| Apparent porosity % | 17 | 16 | 16 | 16 |
| Volume density g/cm 3 | 2.90 | 2.85 | 2.85 | 3.00 |
| Cold crushing strength MPa | 45 | 52 | 55 | 55 |
| 0.2MPa refractoriness under load DEG C | 1550 | 1600 | 1650 | 1650 |
| Thermal shock resistance (950 DEG C are air-cooled)/time | 80 | 90 | 100 | 100 |
| Thermal conductivity W/MK | 2.6 | 2.6 | 2.6 | 2.8 |
| Coefficient of thermal expansion (1400 DEG C) % | 1.6 | 1.7 | 1.6 | 1.7 |
As can be seen from the table, product of the present invention has reduced apparent porosity, has improved compressive strength, refractoriness under load and thermal shock resistance, has effectively improved the wear resisting property of product to kiln material.
Claims (3)
1. a high abrasion mafic spinel brick, is characterized in that: be prepared from by following major ingredient and additive:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia: 4 mm >=granularity >, 1 mm, 27～32%; 1 mm >=granularity >, 0.088 mm, 6～10%, granularity≤0.088 mm, 10～15%;
Electric smelting high ferro magnesia: 4 mm >=granularity >, 1 mm, 22～30%, 1 mm >=granularity >, 0.088 mm, 8～11%; Granularity≤0.088 mm, 9～12%;
Electric smelting spinel: granularity≤0.088 mm, 5～15%;
B, described additive: spent pulping liquor, concentration is 1.18～1.25g/cm
3, be 3～6% of described major ingredient weight.
2. high abrasion mafic spinel brick according to claim 1, is characterized in that:
The physical and chemical index of described sintering high ferro magnesia is: MgO>=92%, Fe
2o
35～6%, SiO
2≤ 0.8%, CaO1.2～2%; Volume density>=3.28g/cm
3, phase composite is that periclasite is or/and spinel.
The physical and chemical index of described electric smelting high ferro magnesia is: MgO>=92%, Fe
2o
35～6%, SiO
2≤ 0.7%, CaO1.2～2%; Volume density>=3.45g/cm
3, phase composite is that periclasite is or/and spinel.
The physical and chemical index of described electric molten magnesite hercynite is: MgO accounts for 20.16%, Fe
2o
3account for 79.84%; Hardness is 7.8, relative density 4.1.
3. a preparation method for high abrasion mafic spinel brick claimed in claim 1, is characterized in that: comprise the steps:
The first step, above-mentioned major ingredient and additive are carried out to mixed grind make pug, be placed in 1000t level friction press and obtain adobe by the compression moulding of required brick type;
Second step, the adobe that the first step is made are placed in dry kiln carries out drying treatment, and drying temperature is 100 ~ 180 DEG C, 10 ~ 20 hours time of drying.
The 3rd step, dried second step adobe is fired in tunnel furnace to 1650 DEG C～1780 DEG C of firing temperatures, 70～80 hours firing times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513234.7A CN103833388A (en) | 2012-12-04 | 2012-12-04 | High-wear-resistance pleonaste brick and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513234.7A CN103833388A (en) | 2012-12-04 | 2012-12-04 | High-wear-resistance pleonaste brick and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103833388A true CN103833388A (en) | 2014-06-04 |
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ID=50797332
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|---|---|---|---|
| CN201210513234.7A Pending CN103833388A (en) | 2012-12-04 | 2012-12-04 | High-wear-resistance pleonaste brick and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591756A (en) * | 2015-01-29 | 2015-05-06 | 濮阳濮耐高温材料（集团）股份有限公司 | Magnesium-iron brick preparation raw material capable of increasing high temperature bending strength of magnesium-iron brick and magnesium-iron brick preparation process |
| CN106766922A (en) * | 2016-12-02 | 2017-05-31 | 安徽芜湖海螺建筑安装工程有限责任公司 | The lightweight configuration structure of refractory brick in cement kiln |
| CN108191404A (en) * | 2017-12-21 | 2018-06-22 | 江苏诺明高温材料股份有限公司 | A kind of ferro-silicon nitride-periclase-magnesium aluminate spinel compoud and preparation method |
| CN112441840A (en) * | 2020-12-07 | 2021-03-05 | 云南濮耐昆钢高温材料有限公司 | Converter repairing material prepared by utilizing recycled magnesia-hercynite bricks |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001858A (en) * | 2010-09-21 | 2011-04-06 | 河南火宝耐火材料有限公司 | High-tenacity mafic spinel brick |
-
2012
- 2012-12-04 CN CN201210513234.7A patent/CN103833388A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001858A (en) * | 2010-09-21 | 2011-04-06 | 河南火宝耐火材料有限公司 | High-tenacity mafic spinel brick |
Non-Patent Citations (2)
| Title |
|---|
| 王杰曾 等: "《水泥窑用耐火材料》", 30 September 2011, article "水泥窑用耐火材料", pages: 160-161 * |
| 袁林 等: "《建材工业耐火材料》", 31 August 2012, article "建材工业耐火材料", pages: 158 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591756A (en) * | 2015-01-29 | 2015-05-06 | 濮阳濮耐高温材料（集团）股份有限公司 | Magnesium-iron brick preparation raw material capable of increasing high temperature bending strength of magnesium-iron brick and magnesium-iron brick preparation process |
| CN106766922A (en) * | 2016-12-02 | 2017-05-31 | 安徽芜湖海螺建筑安装工程有限责任公司 | The lightweight configuration structure of refractory brick in cement kiln |
| CN108191404A (en) * | 2017-12-21 | 2018-06-22 | 江苏诺明高温材料股份有限公司 | A kind of ferro-silicon nitride-periclase-magnesium aluminate spinel compoud and preparation method |
| CN112441840A (en) * | 2020-12-07 | 2021-03-05 | 云南濮耐昆钢高温材料有限公司 | Converter repairing material prepared by utilizing recycled magnesia-hercynite bricks |
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Application publication date: 20140604 |