CN102001858A - High-tenacity mafic spinel brick - Google Patents

High-tenacity mafic spinel brick Download PDF

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Publication number
CN102001858A
CN102001858A CN 201010288843 CN201010288843A CN102001858A CN 102001858 A CN102001858 A CN 102001858A CN 201010288843 CN201010288843 CN 201010288843 CN 201010288843 A CN201010288843 A CN 201010288843A CN 102001858 A CN102001858 A CN 102001858A
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Prior art keywords
granularity
brick
percent
spinel
major ingredient
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李全有
郑建立
曹伟
赵路生
周海军
靳建英
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Zhengzhou Ruitai Refractory Materials Technology Co., Ltd.
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HENAN HUOBAO REFRACTORY CO Ltd
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Abstract

The invention discloses a high-tenacity mafic spinel brick, which is prepared from main materials and additives. The main materials comprise the following components in percent by weight: 15-30 percent of sintered high iron magnesia sand with the granularity of not more than 4mm and more than 1mm, 5-10 percent of sintered high iron magnesia sand with the granularity of not more than 1mm and more than 0.088, and 10-15 percent of sintered high iron magnesia sand with the granularity of not more than 0.088mm; 20-25 percent of electric-smelting high iron magnesia sand with the granularity of not more than 4mm and more than 1mm, 5-15 percent of electric-smelting high iron magnesia sand with the granularity of not more than 1mm and more than 0.088mm, 10-15 percent of electric-smelting high iron magnesia sand with the granularity of not more than 0.088mm; and 5-15 percent of electric-smelting spinel with the granularity of not more than 0.088mm. The addictives account for 3-5 percent by weight of the main materials. The preparation method comprises the following steps of: mixing and milling the main materials and the addictives; placing the mixture into a pressure machine and pressing and moulding according to the required brick type; drying the pressed moulded brick; and sintering the dried moulded brick. The high-tenacity mafic spinel brick prepared by the invention is used for a clinkering zone of a large-scale dry-process cement rotary kiln, and the service life breaks through 300 days, thus the economic effect of cement production factories is greatly improved and the production cost is reduced.

Description

High tenacity pleonast(e) brick
Technical field
The present invention relates to the refractory brick field, especially relate to high tenacity pleonast(e) brick.
Background technology
Along with the fast development of cement industry and the successful Application of new dry process precal cination technique, for cement industry has injected huge vigor.At present, the cement kiln unit be who knows that throughput has developed into from 4000 tons/day of the past, 5000 tons/day and is up to 10000 tons of/day scales.The fast development of cement industry provides huge opportunities and challenges for refractory industry, China for a long time, the employed basic refractory in large-scale dry-process cement rotary kiln clinkering zone position dependence on import always more than 4000 tons/day has improved the manufacturing cost of dry-process cement rotary kiln.The clinkering zone of present domestic research and development is used directly in conjunction with magnesia chrome brick, though high-temperature behavior is pretty good, brick " crisp " easily bursts, and poor toughness under the high temperature can not finely satisfy large-scale dry-process cement rotary kiln service requirements; On the other hand, the Cr of product 2O 3Cr after brick is used in the residual brick 6+ content height causes environmental hazard.Though the pleonast(e) brick of later development has solved this problem, but kiln lining fluctuates very big work-ing life always, the operation that has has only tens days kiln liner tile to have to stop the kiln maintenance with regard to taking place seriously to burst, even do not burst and shortened work-ing life because of the high-temperature behavior variation, cause cement producer frequently to repair stove, directly reduced the economic benefit and the production efficiency of cement producer.
Summary of the invention
The object of the invention is to provide a kind of high tenacity pleonast(e) brick of long service life.
For achieving the above object, the present invention can take following technical proposals:
High tenacity pleonast(e) brick of the present invention, it is prepared from by major ingredient and admixture:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia:
4mm 〉=granularity＞1mm, 15-30%; 1mm 〉=granularity＞0.088mm, 5-10%; Granularity≤0.088mm, 10-15%;
Electric smelting high ferro magnesia:
4mm 〉=granularity＞1mm, 20-25%; 1mm 〉=granularity＞0.088mm, 5-15%; Granularity≤0.088mm, 10-15%;
The electric smelting spinel:
Granularity≤0.088mm, 5-15%;
B, described admixture: spent pulping liquor, concentration: 1.18-1.25g/cm 3, be the 3-5% of described major ingredient weight;
C, preparation:
The first step, above-mentioned major ingredient and admixture carried out mixed grind after, place in the pressing machine by the compression moulding of required brick type; Pressing pressure 1000-3000t/cm 2
Second step, the mould brick that the first step is suppressed carry out drying;
The 3rd goes on foot, dried mould brick of second step is fired, and 1600 ℃-1780 ℃ of firing temperatures got final product in firing time 60-72 hour.
The physical and chemical index of described sintering high ferro magnesia is: MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.8%; CaO:1.5-2%; Volume density 〉=3.28g/cm 3Phase composite is that periclasite is or/and spinel;
The physical and chemical index of described electric smelting high ferro magnesia is:
MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.7%; CaO:1.5-2%; Volume density 〉=3.45g/cm 3Phase composite is that periclasite is or/and spinel;
The physical and chemical index of described electric smelting spinel is: MgO:25-28%; Al 2O 3: 60-65%; Fe 2O 3:≤0.5%; SiO 2:≤0.4%; CaO:0.5≤%; Volume density 〉=3.4g/cm 3The phase composite side of being spinel.
See the following form according to the high tenacity pleonast(e) brick of the present invention's preparation and the physicochemical property contrast of existing pleonast(e) brick:
Figure 973899DEST_PATH_IMAGE001
。
From above index contrast as can be seen, high tenacity pleonast(e) brick normal temperature and high-temperature physics index all are better than existing pleonast(e) brick.The high tenacity pleonast(e) brick of development is in many families large-scale dry method cement rotary kiln clinkering zone uses more than 5000 tons/day such as Chinese Ge Zhou Ba Cement Group, southern cement, the new cement of China, life-span is broken through 300 days, improve the economic benefit of manufacture of cement producer greatly, reduced production cost.
Description of drawings
Fig. 1 is a brickmaking technology schema of the present invention.
Embodiment
Embodiment 1:
As shown in Figure 1: high tenacity pleonast(e) brick of the present invention is prepared from by major ingredient and admixture:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia:
Granularity is 4mm, 15%; Granularity is 1mm, 5%; Granularity is 0.088mm, 10%;
The physical and chemical index of described sintering high ferro magnesia is: MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.8%; CaO:1.5-2%; Volume density 〉=3.28g/cm 3Phase composite is that periclasite is or/and spinel;
Electric smelting high ferro magnesia:
Granularity is 4mm, 25%; Granularity is 1mm, 15%; Granularity is 0.088mm, 15%;
The physical and chemical index of described electric smelting high ferro magnesia is:
MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.7%; CaO:1.5-2%; Volume density 〉=3.45g/cm 3Phase composite is a spinel;
The electric smelting spinel:
Granularity is 0.088mm, 15%;
The physical and chemical index of described electric smelting spinel is: MgO:25-28%; Al 2O 3: 60-65%; Fe 2O 3:≤0.5%; SiO 2:≤0.4%; CaO:0.5≤%; Volume density 〉=3.4g/cm 3The phase composite side of being spinel;
B, described admixture: be 1.18-1.25g/cm 3Spent pulping liquor, be 3% of described major ingredient weight;
C, preparation:
The first step, above-mentioned major ingredient and admixture carried out mixed grind after, place in the pressing machine by the compression moulding of required brick type; Pressing pressure 1000-3000t/cm 2
Second step, the mould brick that the first step is suppressed carry out drying treatment, and be more than 36 hours time of drying, and temperature is 80-120 ℃;
The 3rd goes on foot, dried mould brick of second step is fired, and 1600 ℃-1780 ℃ of firing temperatures got final product in firing time 60-72 hour.
Embodiment 2:
As shown in Figure 1: high tenacity pleonast(e) brick of the present invention is prepared from by major ingredient and admixture:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia:
Granularity 3mm, 21%; Granularity 0.95mm, 9%; Granularity 0.06mm, 12%;
The physical and chemical index of described sintering high ferro magnesia is: MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.8%; CaO:1.5-2%; Volume density 〉=3.28g/cm 3Phase composite is that periclasite is or/and spinel;
Electric smelting high ferro magnesia:
Granularity 3mm, 22%; Granularity 0.07mm, 11%; Granularity 0.06mm, 13%;
The physical and chemical index of described electric smelting high ferro magnesia is:
MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.7%; CaO:1.5-2%; Volume density 〉=3.45g/cm 3Phase composite is a periclasite;
The electric smelting spinel:
Granularity 0.065mm, 12%;
The physical and chemical index of described electric smelting spinel is: MgO:25-28%; Al 2O 3: 60-65%; Fe 2O 3:≤0.5%; SiO 2:≤0.4%; CaO:0.5≤%; Volume density 〉=3.4g/cm 3The phase composite side of being spinel.
B, described admixture: be 1.18-1.25g/cm 3Spent pulping liquor, be the 3-5% of described major ingredient weight;
C, preparation:
The first step, above-mentioned major ingredient and admixture carried out mixed grind after, place in the pressing machine by the compression moulding of required brick type; Pressing pressure 1000-3000t/cm 2
Second step, the mould brick of the first step compacting is carried out drying treatment, be more than 36 hours time of drying, temperature is 80-120 ℃;
The 3rd goes on foot, dried mould brick of second step is fired, and 1600 ℃-1780 ℃ of firing temperatures got final product in firing time 60-72 hour.
Embodiment 3:
As shown in Figure 1: high tenacity pleonast(e) brick of the present invention is prepared from by major ingredient and admixture:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia:
Granularity 1.1mm, 30%; Granularity 0.09mm, 10%; Granularity 0.05mm, 15%;
The physical and chemical index of described sintering high ferro magnesia is: MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.8%; CaO:1.5-2%; Volume density 〉=3.28g/cm 3Phase composite is that periclasite is or/and spinel;
Electric smelting high ferro magnesia:
Granularity 1.1mm, 20%; Granularity 0.098mm, 5%; Granularity 0.05mm, 10%;
The physical and chemical index of described electric smelting high ferro magnesia is:
MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.7%; CaO:1.5-2%; Volume density 〉=3.45g/cm 3Phase composite is that periclasite is or/and spinel;
The electric smelting spinel:
Granularity≤0.05mm, 10%;
The physical and chemical index of described electric smelting spinel is: MgO:25-28%; Al 2O 3: 60-65%; Fe 2O 3:≤0.5%; SiO 2:≤0.4%; CaO:0.5≤%; Volume density 〉=3.4g/cm 3The phase composite side of being spinel.
B, described admixture: be 1.18-1.25g/cm 3Spent pulping liquor, be the 3-5% of described major ingredient weight;
C, preparation:
The first step, above-mentioned major ingredient and admixture carried out mixed grind after, place in the pressing machine by the compression moulding of required brick type; Pressing pressure 1000-3000t/cm 2
Second step, the mould brick of the first step compacting is carried out drying treatment, be more than 36 hours time of drying, temperature is 80-120 ℃;
The 3rd goes on foot, dried mould brick of second step is fired, and 1600 ℃-1780 ℃ of firing temperatures got final product in firing time 60-72 hour.

Claims (2)

1. high tenacity pleonast(e) brick, it is characterized in that: it is prepared from by major ingredient and admixture:
The weight percent proportioning of a, described major ingredient is:
Sintering high ferro magnesia:
4mm 〉=granularity＞1mm, 15-30%; 1mm 〉=granularity＞0.088mm, 5-10%; Granularity≤0.088mm, 10-15%;
Electric smelting high ferro magnesia:
4mm 〉=granularity＞1mm, 20-25%; 1mm 〉=granularity＞0.088mm, 5-15%; Granularity≤0.088mm, 10-15%;
The electric smelting spinel:
Granularity≤0.088mm, 5-15%;
B, described admixture: spent pulping liquor, concentration: 1.18-1.25g/cm 3, be the 3-5% of described major ingredient weight;
C, preparation:
The first step, above-mentioned major ingredient and admixture carried out mixed grind after, place in the pressing machine by the compression moulding of required brick type; Pressing pressure 1000-3000t/cm 2
Second step, the mould brick that the first step is suppressed carry out drying;
The 3rd goes on foot, dried mould brick of second step is fired, and 1600 ℃-1780 ℃ of firing temperatures got final product in firing time 60-72 hour.
2. high tenacity pleonast(e) brick according to claim 1 is characterized in that:
The physical and chemical index of described sintering high ferro magnesia is: MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.8%; CaO:1.5-2%; Volume density 〉=3.28g/cm 3Phase composite is that periclasite is or/and spinel;
The physical and chemical index of described electric smelting high ferro magnesia is:
MgO: 〉=91%; Fe 2O 3: 5-6%; SiO 2:≤0.7%; CaO:1.5-2%; Volume density 〉=3.45g/cm 3Phase composite is that periclasite is or/and spinel;
The physical and chemical index of described electric smelting spinel is: MgO:25-28%; Al 2O 3: 60-65%; Fe 2O 3:≤0.5%; SiO 2:≤0.4%; CaO:0.5≤%; Volume density 〉=3.4g/cm 3The phase composite side of being spinel.
CN 201010288843 2010-09-21 2010-09-21 High-tenacity mafic spinel brick Pending CN102001858A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102674866A (en) * 2012-06-06 2012-09-19 郑州真金耐火材料有限责任公司 Pleonaste heat-insulation composite brick
CN102701759A (en) * 2012-06-06 2012-10-03 郑州真金耐火材料有限责任公司 Pleonaste brick
CN103833388A (en) * 2012-12-04 2014-06-04 江苏顺星耐火科技有限公司 High-wear-resistance pleonaste brick and preparation method thereof
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1451629A (en) * 2003-05-14 2003-10-29 中国建筑材料科学研究院大石桥镁砖厂 Method for making high-iron Mg-Fe spinel brick
CN101045624A (en) * 2007-04-02 2007-10-03 营口高科合成耐火材料有限公司 Magnesium iron spinel sand and manufacturing method thereof
CN101613214A (en) * 2009-07-23 2009-12-30 北京通达耐火技术股份有限公司 A kind of magnesia-hercynite brick used by high temperature zone of cement kiln and using method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1451629A (en) * 2003-05-14 2003-10-29 中国建筑材料科学研究院大石桥镁砖厂 Method for making high-iron Mg-Fe spinel brick
CN101045624A (en) * 2007-04-02 2007-10-03 营口高科合成耐火材料有限公司 Magnesium iron spinel sand and manufacturing method thereof
CN101613214A (en) * 2009-07-23 2009-12-30 北京通达耐火技术股份有限公司 A kind of magnesia-hercynite brick used by high temperature zone of cement kiln and using method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《硅酸盐通报》 20091231 张君博等 氧化镁铁铝尖晶石耐火材料的制备 第1143-1148页 1-2 第28卷, 第6期 *
《耐火材料》 20041231 刘会林等 水泥窑烧成带用镁铁铝尖晶石砖的研制 第414-416页 1-2 第38卷, 第6期 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102674866A (en) * 2012-06-06 2012-09-19 郑州真金耐火材料有限责任公司 Pleonaste heat-insulation composite brick
CN102701759A (en) * 2012-06-06 2012-10-03 郑州真金耐火材料有限责任公司 Pleonaste brick
CN102701759B (en) * 2012-06-06 2013-12-11 郑州真金耐火材料有限责任公司 Pleonaste brick
CN102674866B (en) * 2012-06-06 2013-12-11 郑州真金耐火材料有限责任公司 Pleonaste heat-insulation composite brick
CN103833388A (en) * 2012-12-04 2014-06-04 江苏顺星耐火科技有限公司 High-wear-resistance pleonaste brick and preparation method thereof
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

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