CN102531644A - Kilneye prefabricated member of rotary kiln and preparation method - Google Patents

Kilneye prefabricated member of rotary kiln and preparation method Download PDF

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Publication number
CN102531644A
CN102531644A CN2011103502947A CN201110350294A CN102531644A CN 102531644 A CN102531644 A CN 102531644A CN 2011103502947 A CN2011103502947 A CN 2011103502947A CN 201110350294 A CN201110350294 A CN 201110350294A CN 102531644 A CN102531644 A CN 102531644A
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China
Prior art keywords
rotary kiln
add
dispersion agent
silicon nitride
prefab
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CN2011103502947A
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Chinese (zh)
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山国强
王琪
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山国强
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Priority to CN2011103502947A priority Critical patent/CN102531644A/en
Publication of CN102531644A publication Critical patent/CN102531644A/en
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Abstract

The invention discloses a kilneye prefabricated member of a rotary kiln and a preparation method thereof. The prefabricated member consists of silicon nitride, boron carbide, mullite and aluminate cement which are used as raw materials as well as a dispersing agent and water. In the preparation method, molding is carried out by adopting a vibration pouring method, curing and drying are carried out and then thermal treatment is carried out at a high temperature. The product takes high-hardness wear-resisting raw materials as main raw materials, such as silicon nitride and boron carbide, thereby overcoming the defect that a general raw material is not wear-resistant. In addition, compared with a pouring material, the product disclosed by the invention has the characteristics that the prefabricated member is easy to construct and resists corrosion, especially wear resistance is high and the like, thus the prefabricated member can be widely applied to positions having high wear-resisting requirement, such as the kilneye of the rotary kiln.

Description

A kind of rotary kiln kilneye prefab and preparation method
Technical field
The present invention relates to a kind of rotary kiln kilneye and use refractory materials, relate in particular to a kind of rotary kiln kilneye prefab and preparation method.
Background technology
Traditional rotary kiln kilneye forms with the mould material cast-in-site, and mould material needs the maintenance baking, needs long-time maintenance could guarantee good intensity.And for enterprise; Every stopping production just meaned the loss of a large amount of economic benefits in one day; Therefore mould material comes into operation under the not high situation of intensity usually very soon, cause wear resistance and scour resistance relatively poor, and the rotary kiln kilneye is the place of rotary kiln discharging at every moment; It is very serious to wear and tear, and causes the unsetting mould material wearing and tearing quickening of cast-in-site, general duration of service at 2 ~ 4 months.The so short life-span, reduced the operation factor of line production system more, user's economic benefit and whole rotary kiln body stack shell and refractory materials thereof all there are great disadvantageous effect.
Summary of the invention
The object of the invention is exactly in order to solve the problems of the technologies described above the deficiency of existence, to provide a kind of rotary kiln kilneye with prefab prescription and preparation method, and the preform product of processing can satisfy problems such as in use wearing and tearing, antistripping.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: rotary kiln kilneye prefab is a raw material by silicon nitride, norbide, mullite and aluminate cement, adds dispersion agent, and water is formed; Wherein, silicon nitride 75-85 part, norbide 5-15 part, silit 1-3 part, aluminate cement 5-10 part, total umber are 100 parts; The per-cent that the add-on of water, dispersion agent accounts for silicon nitride, norbide, mullite and aluminate cement gross weight respectively is: water 4-7%, dispersion agent are 0.08-0.16%.
The parts by weight of silicon nitride, norbide, mullite and aluminate cement and additional proportion are in the raw material: silicon nitride 75-85 part, norbide 5-15 part, aluminate cement 5-10 part, mullite 1-3 part, total umber are 100 parts.The per-cent that the add-on of water, dispersion agent accounts for silicon nitride, norbide, mullite and aluminate cement gross weight respectively is: water 4-7%, dispersion agent are 0.08-0.16%.
Described dispersion agent is the mixture of tripoly phosphate sodium STPP and Sodium hexametaphosphate 99; Wherein to account for the per-cent of silicon nitride, norbide, mullite and aluminate cement gross weight be 0.04-0.08% to tripoly phosphate sodium STPP, and the per-cent that Sodium hexametaphosphate 99 accounts for silicon nitride, norbide, mullite and aluminate cement gross weight is 0.04-0.08%.
Above-mentioned each raw material is prepared burden in above ratio, after mixing, adopt the method vibration shaping of vibrating casting, after maintenance, drying, at high temperature heat-treat, obtain this burner and use prefab.
Preparing method of the present invention is:
Step 1, batch mixing and stirring prepare raw material by proportioning, add dispersion agent, stir at mortar mixer, add entry after the stirring, and add-on, stirred 3 minutes in 180-200 mm control according to yield point value;
Step 2, shaping, maintenance and drying are shaped: mould be installed on the shaking table, add the compound that stirs, and reinforced while vibrating; Vibration finishes and with spatula the material that the surface exceeds is erased; And it is the surface is floating; Time of vibration is 90 seconds, maintenance: will pour into a mould good sample and mould and in air, leave standstill the demoulding after 24 hours, natural curing is 48 hours after the demoulding; Dry: the sample that maintenance is good carries out 110 ℃ of 24h oven dry in drying kiln handles, and powered-down treats that its cooling beats room temperature;
Step 3, thermal treatment, dried sample is put into process furnace, begins to warm to 800 ℃ according to 5 ℃/min, and 800 ℃ of insulations 60 minutes, the speed with 3 ℃/min was raised to 1400 ℃ again, and is incubated 180 minutes; After the end, naturally cool to room temperature, obtain this rotary kiln kilneye prefab after coming out of the stove.
The volume density of gained rotary kiln kilneye prefab between 2.7-3.0g/cm3, the highest 260MPa of cold crushing strength.
Useful result of the present invention is: this product has adopted raw material silicon nitride with wear-resisting anti-erosion anti-thermal shock, norbide, mullite as main raw material; Therefore it is attrition resistant many that the traditional relatively mould material of making of product is wanted; In addition; Change the former packed mould material supply of material for accomplish the Idiotype pre-manufactured product that operations such as cast, maintenance and thermal treatment are produced in advance at factory, this kind Products Development has thoroughly solved the site operation weakness of traditional unsetting refractory castable.The kilneye prefab that finally obtains can be under mal-conditions such as high temperature, high wearing and tearing, HS, high erosion life-time service.
Embodiment
 
Embodiment 1, and 75 parts of silicon nitrides, 15 parts of norbides, 9 parts of aluminate cements, 1 part of mullite, total umber are 100 parts, add tripoly phosphate sodium STPP 0.08%, adds Sodium hexametaphosphate 99 0.08% and adds mortar mixer stirring one minute.Stir the water that the back adds 4.2% (adding), water added the back restir 3 minutes.
Embodiment 2, and 80 parts of silicon nitrides, 10 parts of norbides, 9 parts of aluminate cements, 1 part of mullite, total umber are 100 parts, add tripoly phosphate sodium STPP 0.04%, add Sodium hexametaphosphate 99 0.04% and add mortar mixer stirring one minute.Stir the water that the back adds 6% (adding), water added the back restir 3 minutes.
Embodiment 3, and 85 parts of silicon nitrides, 7 parts of norbides, 5 parts of aluminate cements, 3 parts of mullites, total umber are 100 parts, add tripoly phosphate sodium STPP 0.06%, and outer addition polymerization Sodium hexametaphosphate 99 0.06% adds mortar mixer and stirred one minute.Stir the water that the back adds 5% (adding), water added the back restir 3 minutes.
Embodiment 1,2, and 3 subsequent preparation technology is: mould is installed on the shaking table, adds the compound that stirs, and reinforced while vibrating; Vibration finishes and with spatula the material that the surface exceeds is erased, and the surface is floating, and time of vibration is 90 seconds; Sample and mould that cast is good leave standstill the demoulding after 24 hours in air, natural curing is 48 hours after the demoulding, and the sample that maintenance is good carries out 110 ℃ of 24h oven dry in drying kiln handles; Powered-down treats that its cooling beats room temperature; Dried sample is put into process furnace, begins to warm to 800 ℃ according to 5 ℃/min, and 800 ℃ of insulations 60 minutes; Speed with 3 ℃/min is raised to 1400 ℃ again, and is incubated 180 minutes; After the end, naturally cool to room temperature, obtain this rotary kiln kilneye prefab after coming out of the stove.

Claims (3)

1. rotary kiln kilneye prefab, it is characterized in that: by silicon nitride, norbide, mullite and aluminate cement is raw material, adds dispersion agent, water is formed; Wherein, silicon nitride 75-85 part, norbide 5-15 part, silit 1-3 part, aluminate cement 5-10 part, total umber are 100 parts; The per-cent that the add-on of water, dispersion agent accounts for silicon nitride, norbide, mullite and aluminate cement gross weight respectively is: water 4-7%, dispersion agent are 0.08-0.16%.
2. according to the described burner prefab of its claim 1, it is characterized in that: dispersion agent is the mixture of tripoly phosphate sodium STPP and Sodium hexametaphosphate 99.
3. the preparation method of rotary kiln kilneye prefab according to claim 1 is characterized in that:
Step 1, batch mixing and stirring prepare raw material by proportioning, add dispersion agent, stir at mortar mixer, add entry after the stirring, and add-on, stirred 3 minutes in 180-200 mm control according to yield point value;
Step 2, shaping, maintenance and drying are shaped: mould be installed on the shaking table, add the compound that stirs, and reinforced while vibrating; Vibration finishes and with spatula the material that the surface exceeds is erased; And it is the surface is floating; Time of vibration is 90 seconds, maintenance: will pour into a mould good sample and mould and in air, leave standstill the demoulding after 24 hours, natural curing is 48 hours after the demoulding; Dry: the sample that maintenance is good carries out 110 ℃ of 24h oven dry in drying kiln handles, and powered-down is treated its cool to room temperature;
Step 3, thermal treatment, dried sample is put into process furnace, begins to warm to 800 ℃ according to 5 ℃/min, and 800 ℃ of insulations 60 minutes, the speed with 3 ℃/min was raised to 1400 ℃ again, and is incubated 180 minutes; After the end, naturally cool to room temperature, obtain this rotary kiln kilneye prefab after coming out of the stove.
CN2011103502947A 2011-11-09 2011-11-09 Kilneye prefabricated member of rotary kiln and preparation method Pending CN102531644A (en)

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CN2011103502947A CN102531644A (en) 2011-11-09 2011-11-09 Kilneye prefabricated member of rotary kiln and preparation method

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Application Number Priority Date Filing Date Title
CN2011103502947A CN102531644A (en) 2011-11-09 2011-11-09 Kilneye prefabricated member of rotary kiln and preparation method

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CN102531644A true CN102531644A (en) 2012-07-04

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104609746A (en) * 2015-02-11 2015-05-13 张婷 Burner prefabricated member for lime kiln and preparation method for burner prefabricated member
CN105152664A (en) * 2015-09-29 2015-12-16 中钢集团耐火材料有限公司 Preparation method of castable used for copper smelting chute
CN106220205A (en) * 2015-02-11 2016-12-14 汤炼芳 A kind of calcining kiln burner prefabricated component and preparation method
CN108794026A (en) * 2018-07-12 2018-11-13 佛山市高捷工业炉有限公司 The preparation method of high-strength high temperature-resistant furnace body material
CN108794028A (en) * 2018-07-12 2018-11-13 佛山市高捷工业炉有限公司 A kind of high-strength high temperature-resistant furnace body material
CN113149673A (en) * 2021-05-08 2021-07-23 泰兴市恒信特种耐火材料有限公司 Aluminum-silicon castable added with sinking beads and preparation method thereof
CN113185309A (en) * 2021-05-08 2021-07-30 泰兴市恒信特种耐火材料有限公司 Aluminum-silicon castable added with silica micropowder and preparation method thereof
CN113185310A (en) * 2021-05-12 2021-07-30 泰兴市恒信特种耐火材料有限公司 Aluminum-silicon castable added with floating beads and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101565316A (en) * 2009-06-03 2009-10-28 重庆罗曼科技有限公司 Preparation method of high-temperature abrasion proof ceramic wafer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101565316A (en) * 2009-06-03 2009-10-28 重庆罗曼科技有限公司 Preparation method of high-temperature abrasion proof ceramic wafer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104609746A (en) * 2015-02-11 2015-05-13 张婷 Burner prefabricated member for lime kiln and preparation method for burner prefabricated member
CN106187231A (en) * 2015-02-11 2016-12-07 张婷 One limekiln burner prefabricated component and preparation method
CN106220205A (en) * 2015-02-11 2016-12-14 汤炼芳 A kind of calcining kiln burner prefabricated component and preparation method
CN105152664A (en) * 2015-09-29 2015-12-16 中钢集团耐火材料有限公司 Preparation method of castable used for copper smelting chute
CN108794026A (en) * 2018-07-12 2018-11-13 佛山市高捷工业炉有限公司 The preparation method of high-strength high temperature-resistant furnace body material
CN108794028A (en) * 2018-07-12 2018-11-13 佛山市高捷工业炉有限公司 A kind of high-strength high temperature-resistant furnace body material
CN113149673A (en) * 2021-05-08 2021-07-23 泰兴市恒信特种耐火材料有限公司 Aluminum-silicon castable added with sinking beads and preparation method thereof
CN113185309A (en) * 2021-05-08 2021-07-30 泰兴市恒信特种耐火材料有限公司 Aluminum-silicon castable added with silica micropowder and preparation method thereof
CN113185310A (en) * 2021-05-12 2021-07-30 泰兴市恒信特种耐火材料有限公司 Aluminum-silicon castable added with floating beads and preparation method thereof

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