CN107488049A - A kind of Al2O3‑SiO2The spherical lightweight refracrory aggregate of matter - Google Patents

A kind of Al2O3‑SiO2The spherical lightweight refracrory aggregate of matter Download PDF

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CN107488049A
CN107488049A CN201710720444.6A CN201710720444A CN107488049A CN 107488049 A CN107488049 A CN 107488049A CN 201710720444 A CN201710720444 A CN 201710720444A CN 107488049 A CN107488049 A CN 107488049A
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aggregate
matter
sio
spherical
powder
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李楠
董高峰
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YANSHI GUANGMING HIGH-TECH REFRACTORY PRODUCTS Co Ltd
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YANSHI GUANGMING HIGH-TECH REFRACTORY PRODUCTS Co Ltd
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Abstract

The invention discloses a kind of Al2O3‑SiO2The spherical lightweight refracrory aggregate processing technique of matter, simple production process, the finished product produced not only has the advantages of shape, size distribution, fine powder amount and thing phase composition are accurate controllable, and there is the characteristics of raw material utilization efficiency is high, the product that this method is produced both provided exact materials for the grain mixture ratio design of refractory material, can also reduce the wasting of resources again.The technical solution adopted in the present invention is：A kind of Al2O3‑SiO2The spherical lightweight refracrory aggregate of matter, the addition parts by weight of original material are：70 ~ 99 parts of alumina rawore powder, 0.5 ~ 20 part of clay rawore powder, 0.1 ~ 10 part of alumina powder；25 ~ 45% that lost article addition is original material gross weight are burnt, additive addition is the 0.5 ~ 16% of original material gross weight.Irregular material is contrasted using castable produced by the invention, body is close to be significantly increased, and intensity significantly improves.

Description

A kind of Al2O3-SiO2The spherical lightweight refracrory aggregate of matter
Technical field
The present invention relates to technical field of refractory materials, and in particular to a kind of Al2O3-SiO2The spherical lightweight refracrory bone of matter Material and its preparation technology.
Background technology
Refractory material point setting product and unsetting product, refractory brick can be classified as the product that shapes, castable, ramming mass, spray Coating etc. can be classified as unsetting product.No matter shape or unsetting, be required for particle and fine powder during production, particle is referred to as bone Material, fine powder turn into matrix, and general more than 0.1mm definition is aggregate.The manufacture method of die traditional aggregate is：First by mineral or synthesis Raw material is levigate, after pressed compact, is burnt till in rotary kiln, shaft kiln or tunnel cave, the bulk raw of sintering by it is thick it is broken, in the work such as break The particle of different size ranges is obtained after sequence by screening again（Such as 8-5mm, 5-3mm, 3-1mm）, that is, obtain refractory material aggregate.
It is such as mullite and not next because the shape influence of characteristic and crumbling method and equipment on aggregate of raw material in itself is very big The high clinker of stone content easily forms prolate shape aggregate, is also easy to produce prolate shape aggregate etc. during with roller pair breaking crusher machine；Meanwhile material Characteristic and disintegrating apparatus can also produce a very large impact with technique to size distribution of the aggregate in same particle size range, such as same It is 3-1mm aggregate, the content of wherein 3-2mm and 2-1mm aggregate may produce very big because disintegrating apparatus is different from technique Change.Such as 3-2mm aggregate accounts for 70%, 2-1mm aggregate and accounted in the 3-1mm aggregates produced with a certain equipment and crushing process 30%；And when being produced with another equipment, due to the change of the factors such as charging rate, 3-2mm aggregate only accounts in 3-1mm aggregates 50%, and 2-1mm aggregate can account for 50%.Therefore, it is uncontrollable with the shape and particle diameter distribution of the aggregate of produced in conventional processes. Thus the microstructural control to refractory material brings very big difficulty.
On the other hand, because the clinker particles granularity required by user is different, it will also result in the wasting of resources.For example, certain is used Family only needs 3-1mm particle, but inevitably produces 1-0mm particle simultaneously in shattering process, and this partial particulate needs Otherwise processed is wanted, or is sold at a low price, causes the wasting of resources.
For traditional lightweight aggregate, processed frequently with the leftover bits of light-end products processing, but light-end products uses more The larger spherical burning lost article of particle diameter, aggregate surface have cavity not of uniform size, and when in use, the fine powder of addition can be first filled with The cavity, then can just play a part of binding matrix, so cause fine powder content increase in proportioning, drop close so as to increase body Low effect of heat insulation.
For traditional lightweight raw material, different grain size is prepared using breaking method more, but because lightweight material intensity is relatively low, it is any Crumbling method will all produce substantial amounts of fine powder, particularly 1-0mm grades, wherein containing substantial amounts of fine powder, and ratio is unstable, and This has a strong impact on proportion speed during use.
In view of the foregoing, a kind of Al is now developed2O3-SiO2The spherical lightweight refracrory aggregate processing technique of matter.
The content of the invention
The invention aims to overcome deficiency and technological deficiency of the prior art, there is provided a kind of Al2O3-SiO2Matter is spherical Lightweight refracrory aggregate processing technique, simple production process, the finished product produced not only with shape, size distribution with The characteristics of accurate controllable, be that the fine powder usage amount of refractory products proportioning and its thing phase composition have precision to downstream product The advantages of controllable, due to not using any mechanical external force crumbling method to process, reduce manufacturing procedure, therefore raw material utilization efficiency The characteristics of high, the product that this method is produced both provided exact materials granularity for the grain mixture ratio design of refractory material, and also might be used To reduce the wasting of resources.
The present invention to achieve these goals, adopts the following technical scheme that：A kind of Al2O3-SiO2The spherical light-weight refractory material of matter Expect aggregate, the addition parts by weight of original material are：70 ~ 99 parts of alumina rawore powder, 0.5 ~ 20 part of clay rawore powder, alumina powder 0.1 ~ 10 part；Burn 25 ~ 45% that lost article addition is original material gross weight, additive addition for original material gross weight 0.5 ~ 16%。
Wherein Al in alumina rawore powder2O3Content is 42 ~ 80wt%, granularity≤88 μm.
Wherein Al in clay rawore powder2O3Content is 30 ~ 45wt%, granularity≤88 μm.
Wherein Al in industrial alumina powder2O3Content >=98wt%, granularity≤88 μm.
Wherein additive is polyvinyl alcohol, carboxymethyl cellulose, spent pulping liquor, Ludox and Alumina gel one of which or several The combination of kind.
Wherein burn lost article preparation method be：The combination of stalk, shell one or more from crops, is carried out clear Wash, after drying, under temperature 60-80 degree, dried, crushed with pulverizer, the μ of granularity 0.1 is processed into ball mill The powder of m -10 μm.
It is often a large amount of in the harvest season at present because rural area also can not find effective Land use systems of the crop by-products such as stalk Illegal burning straw etc., cause air pollution or haze, the good approach that the present invention and a kind of crops utilize.
The present invention burns lost article using organic matters such as agricultural crop straw, shells, and granularity 0.1 μm -10 is machined to using ball milling μm powder.The organic matter that lost article is 0.1 μm -10 μm of granularity is burnt, because the granularity for burning lost article has reached Ultramicro-powder, is made most Finished product stomata is dispersed and miniaturization.
For traditional lightweight aggregate, processed frequently with the leftover bits of light-end products processing, but light-end products uses more The larger spherical burning lost article of particle diameter, aggregate surface have cavity not of uniform size, and when in use, the fine powder of addition can be first filled with The cavity, then can just play a part of binding matrix, so cause fine powder content increase in proportioning, drop close so as to increase body Low effect of heat insulation.
In addition, traditional pore forming method generally adds millimetre-sized polystyrene sphere, such as 3-1mm, 1-0mm, 0.2mm etc., the pore creating material high temperature produces niff when being volatilized after burning, and because the organic matter contains phenyl ring, has necessarily Toxicity；
The pore forming method that the present invention uses, is on the one hand the organic filler for reaching Ultramicro-powder level using granularity, and the burning lost article is Crops, granularity are 0.1 μm -10 μm, therefore say that the aperture of aperture and traditional lightweight material is not an order of magnitude, another Aspect, clay and raw bauxite in raw material, at high temperature dehydration can leave hole, and the size in the aperture is also micro- less than 10 The scope of rice, and be closed porosity；The heat conduction path of material is conduction, radiated, convection current, and the micropore of these autonomous closures can be notable Material internal convection current and conduction heat transfer are reduced, therefore, even if the body of the material is close slightly higher, its thermal conductivity is still relatively low；Due to adopting Burning lost article granularity reaches Ultramicro-powder, so coarse table only can be observed in the hole on the surface of product under microstate Face, naked eye is without visible hole.
Due to the unique individualities in aperture of the present invention, product body of the invention is close closeer than the body of traditional lightweight aggregate slightly higher, The body of general die traditional aggregate is close in 1.2g/cm3Hereinafter, product body of the invention is close in 1.5 g/cm3Left and right, therefore material is strong Degree is higher than die traditional aggregate, simultaneously because production technology is unique, product is directly product grading, without the broken of any external force Broken, therefore, a small amount of fine powder caused by the friction only between material, fine powder is below 5% in fine grained such as 1-0mm granularities, tradition Fine powder content in aggregate 1-0mm granularities is substantially more than 30%, and in summary, product granularity of the invention is accurate, and intensity is high, Good heat conductivity, the drawbacks of conventional materials fine powder addition big, low intensity can be avoided.
The present invention has the characteristics of particle profile and size and controllable Size Distribution, and product processes of the present invention avoid Crushing process after burning, there is the meaning for saving the energy.
This Al of the present invention2O3-SiO2The spherical lightweight refracrory aggregate processing method of matter is：
Step 1: original material is carried out dispensing in proportion, original stock is obtained through being kneaded after the material weighed up is well mixed；
Lost article is burnt Step 2: being added in original material mixture, burning lost article addition is the 25 ~ 45% of original material gross weight, then is added Enter additive, additive addition is the 0.5 ~ 16% of original material gross weight, final mixture is obtained after stirring, then be placed in In comminutor；Water is added, the amount that water adds is the 4 ~ 20% of final mixture gross weight, and the rotating speed of comminutor is 2 ~ 20 revs/min Under the conditions of, spray and spherical base substrate, a diameter of 0.2 ~ 8mm of spherical base substrate is made；
Step 3: spherical base substrate is put into rotary drying drum, after being dried 2 ~ 24 hours under conditions of 105 ~ 120 DEG C, then put Enter in rotary kiln and be incubated 1 ~ 8 hour under the conditions of 1500 ~ 1750 DEG C, Al is made2O3-SiO2The spherical lightweight refracrory aggregate of matter.
Described Al2O3-SiO2Contain in the spherical lightweight refracrory aggregate finished product of matter：Corundum phase, Rutile Type, Mo Lai Stone phase and glass phase wherein at least two kinds of contents；
Al described in finished product2O3Content is 40 ~ 90wt%, when in finished product containing corundum phase the content of the corundum phase for 1 ~ 80wt%, the mullite phase content is 1 ~ 90wt% when containing mullite phase in finished product, described when containing Rutile Type in finished product Rutile Type is 0-5%；The amount of glassy phase is 5 ~ 50wt% when containing glass phase in finished product；
Finished product profile is in spherical, and sphericity is up to 99%, and particle diameter range is 25 ~ 50% in 0.2 ~ 8mm, water absorption rate, and bulk density is 1.4~1.70g/cm3。
For product sphericity produced by the invention up to 99%, this is the specific characteristic that other sintering crushing aggregates do not have, this Shape is particularly suitable for castable, spray paint, because aggregate is spherical, it is easy to flows, to unsetting material easily full of multiple Miscellaneous short space, pumping is good, reduces the abrasion of batch mixing and construction equipment；Because being spherical, reduce stress concentration, be advantageous to Improve article construction uniformity；Because surface is mat surface, can be well combined with matrix, to the pressure-resistant of terminal refractory products Intensity and rupture strength can effectively improve.The performance has obtained practical proof.
The present invention improves the effect of heat insulation of material using mistake method and reaction in-situ pore-creating is burnt so as to manufacture lightweight material.This Invention surface is visible by naked eyes cavity, and fine powder amount accurately controls.
The finished product that is produced of the present invention not only has shape, size distribution, to the fine powder amounts of terminal refractory products and The advantages of thing phase composition is accurate controllable, and there is the characteristics of raw material utilization efficiency is high, the product that this method is produced both had been fire resisting The grain mixture ratio design of material provides exact materials, can reduce the wasting of resources again.The present invention can be directed to defined granularity group Accurate production is knitted, avoids waste；The present invention reduces energy consumption, has saved the energy because reducing broken process after burning.This hair It is bright effectively to utilize agriculture waste stalk and shell, reduce Air-pollution From Combustion at random.
The present invention is using spraying balling-up technology, rotating speed, raw material proportioning and granularity and additive ratio during by controlling balling-up The profile of base substrate is controlled mutually to be formed with granularity, thing and sintering degree again, the Al produced2O3-SiO2The spherical light-weight refractory material of matter Expect aggregate, not only with the advantages of shape, size distribution and thing phase composition are uniform, precision is controllable, and there is raw material utilization efficiency The characteristics of high.
The present invention has the characteristics of simple production process, particle profile and size and Size Distribution is controllable, prepared Al2O3-SiO2The spherical lightweight refracrory aggregate size distribution of matter is accurate, water absorption rate is low, can be the grain mixture ratio of refractory material Design provides exact materials, can also reduce the wasting of resources.
Present invention process can realize accurate grading, realize optimal components, the accurate control of grain size distribution, greatly Ground stabilizes the stability of the refractory products quality of production.Grain composition is the basic law that refractory material manufacture follows, but Due to crumbling method, it is broken when the factor such as discharge quantity influence, particle size deviation is very big, can not realize best particle size gradation.Using The irregular material of castable contrast produced by the invention, body is close to be significantly increased, and intensity significantly improves.
Embodiment
Implementation and the feature of the present invention is exemplified below, but the present invention is not limited to following embodiments.
Embodiment 1：
A kind of Al2O3-SiO2The spherical lightweight refracrory aggregate of matter, the addition parts by weight of original material are：Alumina rawore powder 70 Part, 20 parts of clay rawore powder, 10 parts of alumina powder；25% that lost article addition is original material gross weight is burnt, additive addition is The 0.5% of original material gross weight.
Embodiment 2：
A kind of Al2O3-SiO2The spherical lightweight refracrory aggregate of matter, the addition parts by weight of original material are：Alumina rawore powder 80 Part, 15 parts of clay rawore powder, 5 parts of alumina powder；30% that lost article addition is original material gross weight is burnt, additive addition is The 10% of original material gross weight.
Embodiment 3：
A kind of Al2O3-SiO2The spherical lightweight refracrory aggregate of matter, the addition parts by weight of original material are：Alumina rawore powder 99 Part, 0.5 part of clay rawore powder, 0.5 part of alumina powder；Burn 45% that lost article addition is original material gross weight, additive addition For the 16% of original material gross weight.
This Al of the present invention2O3-SiO2The spherical lightweight refracrory aggregate processing method of matter is：
Step 1: original material is carried out dispensing according to the above ratio, original mix is obtained through being kneaded after the material weighed up is well mixed Compound；
Lost article is burnt Step 2: being added in original material mixture, burning lost article addition is the 25 ~ 45% of original material gross weight, then is added Enter additive, additive addition is the 0.5 ~ 16% of original material gross weight, final mixture is obtained after stirring, then be placed in In comminutor；Water is added, the amount that water adds is the 4 ~ 20% of final mixture gross weight, and the rotating speed of comminutor is 2 ~ 20 revs/min Under the conditions of, spray and spherical base substrate, a diameter of 0.2 ~ 8mm of spherical base substrate is made；
Step 3: spherical base substrate is put into rotary drying drum, after being dried 2 ~ 24 hours under conditions of 105 ~ 120 DEG C, then put Enter in rotary kiln and be incubated 1 ~ 8 hour under the conditions of 1500 ~ 1750 DEG C, Al is made2O3-SiO2The spherical lightweight refracrory aggregate of matter.
The performance indications that embodiment 1-3 is obtained are：Finished product profile is in spherical, and up to 99%, particle diameter range exists sphericity 0.2 ~ 8mm, water absorption rate are 25 ~ 50%, and bulk density is 1.4 ~ 1.70g/cm3.

Claims (7)

  1. A kind of 1. Al2O3-SiO2A kind of spherical lightweight refracrory aggregate of matter, it is characterised in that Al2O3-SiO2The spherical lightweight of matter is resistance to Fiery material aggregate, the addition parts by weight of original material are：70 ~ 99 parts of alumina rawore powder, 0.5 ~ 20 part of clay rawore powder, aluminum oxide 0.1 ~ 10 part of powder；25 ~ 45% that lost article addition is original material gross weight are burnt, additive addition is the 0.5 of original material gross weight ~16%。
  2. A kind of 2. Al according to claim 12O3-SiO2The spherical lightweight refracrory aggregate of matter, it is characterised in that：Addition Agent is polyvinyl alcohol, carboxymethyl cellulose, spent pulping liquor, Ludox and Alumina gel one of which or several combinations.
  3. A kind of 3. Al according to claim 12O3-SiO2The spherical lightweight refracrory aggregate of matter, it is characterised in that：Burn and lose The preparation method of thing is：The combination of stalk, shell one or more from crops, is cleaned, after drying, in temperature Under 60-80 degree, dried, crushed with pulverizer, powder is processed into ball mill.
  4. A kind of 4. Al according to claim 32O3-SiO2The spherical lightweight refracrory aggregate of matter, it is characterised in that：Burn and lose Thing is processed into the powder of 0.1 μm -10 μm of granularity in ball mill.
  5. A kind of 5. Al according to claim 12O3-SiO2The spherical lightweight refracrory aggregate processing method of matter, its feature It is：Step 1: original material is carried out dispensing in proportion, original mixed is obtained through being kneaded after the material weighed up is well mixed Thing；Lost article is burnt Step 2: being added in original material mixture, burning lost article addition is the 25 ~ 45% of original material gross weight, then is added Enter additive, additive addition is the 0.5 ~ 16% of original material gross weight, final mixture is obtained after stirring, then be placed in In comminutor；Water is added, the amount that water adds is the 4 ~ 20% of final mixture gross weight, and the rotating speed of comminutor is 2 ~ 20 revs/min Under the conditions of, spray and spherical base substrate is made；Step 3: spherical base substrate is put into rotary drying drum, under conditions of 105 ~ 120 DEG C After drying 2 ~ 24 hours, place into rotary kiln and be incubated 1 ~ 8 hour under the conditions of 1500 ~ 1750 DEG C, Al is made2O3-SiO2Matter ball Shape lightweight refracrory aggregate.
  6. A kind of 6. Al according to claim 52O3-SiO2The spherical lightweight refracrory aggregate processing method of matter, its feature It is：Sprayed in step 2 and a diameter of 0.2 ~ 8mm of spherical base substrate is made.
  7. A kind of 7. Al according to claim 52O3-SiO2The spherical lightweight refracrory aggregate processing method of matter, its feature It is：The Al obtained in step 32O3-SiO2The sphericity of the spherical lightweight refracrory aggregate of matter is up to 99%.
CN201710720444.6A 2017-08-21 2017-08-21 A kind of Al2O3‑SiO2The spherical lightweight refracrory aggregate of matter Pending CN107488049A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108395227A (en) * 2018-04-26 2018-08-14 上海宝明耐火材料有限公司 A kind of lightweight refractory material and preparation method thereof
CN110040995A (en) * 2019-04-22 2019-07-23 瑞泰科技股份有限公司 A kind of high temperature lightweight toughness mullite aggregate preparation method
CN110642635A (en) * 2019-11-01 2020-01-03 天津泽希矿产加工有限公司 Application of spherical alumina micropowder in refractory castable
CN115784721A (en) * 2022-10-26 2023-03-14 中冶赛迪工程技术股份有限公司 Aggregate for high-purity corundum refractory brick, and preparation method and application thereof
CN115925431A (en) * 2022-12-26 2023-04-07 宜兴瑞泰耐火材料工程有限公司 High-thermal-conductivity self-flow castable for water-cooled wall and preparation process thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100210444A1 (en) * 2009-02-19 2010-08-19 Rhoads Randy L Large refractory article and method for making
CN103044047A (en) * 2013-01-23 2013-04-17 武汉科技大学 Lightweight aluminum-magnesium castable and preparation method of lightweight aluminum-magnesium castable
CN103880440A (en) * 2014-02-19 2014-06-25 江苏晶鑫高温材料有限公司 Preparation method for microporous high-strength sintered refractory aggregate
CN104817328A (en) * 2015-03-13 2015-08-05 李楠 Production method for Al2O3-SiO2 spherical refractory material aggregate
CN105237014A (en) * 2015-11-06 2016-01-13 武汉科技大学 Light slightly-closed hole corundum complex-phase refractory material and preparation method thereof
CN106167411A (en) * 2016-08-05 2016-11-30 武汉科技大学 A kind of mullite carborundum multiple phase refractory material and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100210444A1 (en) * 2009-02-19 2010-08-19 Rhoads Randy L Large refractory article and method for making
CN103044047A (en) * 2013-01-23 2013-04-17 武汉科技大学 Lightweight aluminum-magnesium castable and preparation method of lightweight aluminum-magnesium castable
CN103880440A (en) * 2014-02-19 2014-06-25 江苏晶鑫高温材料有限公司 Preparation method for microporous high-strength sintered refractory aggregate
CN104817328A (en) * 2015-03-13 2015-08-05 李楠 Production method for Al2O3-SiO2 spherical refractory material aggregate
CN105237014A (en) * 2015-11-06 2016-01-13 武汉科技大学 Light slightly-closed hole corundum complex-phase refractory material and preparation method thereof
CN106167411A (en) * 2016-08-05 2016-11-30 武汉科技大学 A kind of mullite carborundum multiple phase refractory material and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108395227A (en) * 2018-04-26 2018-08-14 上海宝明耐火材料有限公司 A kind of lightweight refractory material and preparation method thereof
CN110040995A (en) * 2019-04-22 2019-07-23 瑞泰科技股份有限公司 A kind of high temperature lightweight toughness mullite aggregate preparation method
CN110040995B (en) * 2019-04-22 2021-10-08 瑞泰科技股份有限公司 Preparation method of high-temperature light tough mullite aggregate
CN110642635A (en) * 2019-11-01 2020-01-03 天津泽希矿产加工有限公司 Application of spherical alumina micropowder in refractory castable
CN115784721A (en) * 2022-10-26 2023-03-14 中冶赛迪工程技术股份有限公司 Aggregate for high-purity corundum refractory brick, and preparation method and application thereof
CN115784721B (en) * 2022-10-26 2023-11-03 中冶赛迪工程技术股份有限公司 Aggregate for high-purity corundum refractory bricks and preparation method and application thereof
CN115925431A (en) * 2022-12-26 2023-04-07 宜兴瑞泰耐火材料工程有限公司 High-thermal-conductivity self-flow castable for water-cooled wall and preparation process thereof
CN115925431B (en) * 2022-12-26 2023-09-05 宜兴瑞泰耐火材料工程有限公司 High-heat-conductivity self-flowing castable for water-cooled wall and preparation process thereof

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