CN102788497A - Special composite firebrick for rotary kiln and preparation method thereof - Google Patents
Special composite firebrick for rotary kiln and preparation method thereof Download PDFInfo
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- CN102788497A CN102788497A CN2012103272812A CN201210327281A CN102788497A CN 102788497 A CN102788497 A CN 102788497A CN 2012103272812 A CN2012103272812 A CN 2012103272812A CN 201210327281 A CN201210327281 A CN 201210327281A CN 102788497 A CN102788497 A CN 102788497A
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Abstract
The invention relates to a special composite firebrick for a rotary kiln and a preparation method thereof. The special composite firebricks are divided in to common firebricks and special firebricks which are in the same appearance and size, both the common firebrick and the special firebrick consist of working layers (1) and thermal insulation layers (2), and adhesion agents and binding agents are combined between the working layers (1) and thermal insulation layers (2); the adhesion agents are prepared by mixing fluorite powders, hollow microspheres, sub-white fused alumina hollow spheres, mullite hollow spheres, sphere clay powders and silica fumes according to certain proportions to form slurry by utilizing inorganic bonds; the binding agents are inorganic bonds, such as one or mixture of phenolic resin glue, polyvinyl acetate resin glue and urea resin. The special composite firebrick for the rotary kiln can be used for building the inside liner of a rotary kiln calcined by cement, fireproof material, fracturing propping agent for petroleum well, lime and the like, and has the functions of strip resistance, thermal shock resistance, high refractoriness under load and wear resistance.
Description
Technical field
The present invention relates to a kind of composite refractory brick that is used to build by laying bricks or stones the calcination rotary kiln inner liner; Belong to fire resisting material field; Can be used for masonry cement, refractory material, oil well inner liner, have anti-strip, anti-thermal shock, high RUL, wear-resisting function with calcination rotary kilns such as fracturing propping agents, lime.
Background technology
The workspace of rotary kiln can be divided into three sections, i.e. drying and preheating section, calcining section, cooling section.For example: cement, refractory material, oil well are with calcination rotary kilns such as fracturing propping agents, lime.The effect of inner liner of rotary kiln brick is to guarantee that three workspace temperature have reliable and stable physical property in the stove in the scope of technological requirement; For example, anti-strip, anti-thermal shock, high RUL, anti-wear performance.In the prior art, the inner liner of rotary kiln brick is divided into flame retardant coating and heat-insulation layer; The technological deficiency that exists is: brick-building art is complicated, in the use, and flame retardant coating and heat-insulation layer be prone to break away from, fire-resistant and heat-insulating property is poor, and service life is short, and be individual month of 8-10 actual life.Cause maintenance time long, production cost is high, obviously influences economic benefit of enterprises.
Summary of the invention
The object of the present invention is to provide a kind of composite refractory brick that is used for masonry cement, refractory material, oil well with calcination rotary kiln inner liners such as fracturing propping agents, lime, to overcome defective and the deficiency that exists in the prior art.
Technical scheme of the present invention: composite refractory brick according to the invention is divided into Dimensions identical common refractory brick and special quality fire-brick; Common refractory brick and special quality fire-brick all are made up of working lining and thermal insulation layer; It is characterized in that, be combined with interfacial agents and binding agent between working lining and the thermal insulation layer;
Said interfacial agents is with the fluorite powder, floats pearl, sub-white corundum hollow ball, mullite hollow ball, ball clay powder, silicon ash proportionally, utilizes inorganic bond furnishing pulpous state to process; Purpose is to stop the heat conduction of calcining materials in the working lining bricklaying surface and consume, and makes working lining and thermal insulation layer be combined into overall structure;
Said binding agent is meant inorganic bond, for example wherein one or several the mixing of phenolic resin glue, polyvinyl acetate resin adhesive, Lauxite.
The preparation method of said composite refractory brick is following steps:
Step 1); The working lining of said common refractory brick or special quality fire-brick is to be common refractory brick or special quality fire-brick raw material that 8% aluminium dihydrogen phosphate mixes, to add water moistening with accounting for total weight parts, through the compacting of 500-650 ton forcing press; Be shaped to blank; After breaking away from mould, an end of working lining forms the alternate groove shape combination interface of convex-concave, obtains the blank of common refractory brick or special quality fire-brick working lining;
Step 2), on the adhesive interface of the working lining blank that step 1) obtains, be coated with one deck interfacial agents, coating adhesive on interfacial agents again obtains the blank of working lining to be processed;
Step 3); Step 2) blank of the working lining to be processed that obtains, refill into finished product mould, the mixed material that adds thermal insulation layer in adhesive interface one side of working lining adds that to account for total weight parts be that 8% aluminium dihydrogen phosphate mixes, to add water moistening; Through forcing press compression moulding; After breaking away from mould, form the combination of working lining and thermal insulation layer, obtain the common refractory brick or the special quality fire-brick blank of composite refractory brick according to the invention;
Step 4), the common refractory brick or the special quality fire-brick blank that obtain step 3) at 500-550 ℃ of environment, keep drying processing under 48 hours the condition at least, obtain common refractory brick or special quality fire-brick finished product.
As shown in Figure 3; The inner liner of rotary kiln layer that utilizes composite refractory brick according to the invention to build by laying bricks or stones, along the inboard of the outer wall 3 of rotary kiln, annular is built composite refractory brick by laying bricks or stones; The drying and preheating section 8 of rotary kiln, the common refractory brick of cooling section 6 usefulness are built by laying bricks or stones, and calcining section 7 usefulness special quality fire-bricks are built by laying bricks or stones; The kiln chamber B of drying and preheating section and cooling section constitutes working lining 5 and insulating 4 successively with the outside of the kiln chamber C of calcining section; The high temperature sintering of calcination process makes working lining 5 and insulating 4 form overall structure, has improved anti-strip, anti-thermal shock, high RUL, the anti-wear performance of composite refractory brick; The bonding tightness of convenient building wherein and working lining and insulating is conspicuous.This rotary kiln can be that cement, refractory material, oil well are with calcination rotary kilns such as fracturing propping agents, lime.
Description of drawings
Fig. 1 is the front view of composite refractory brick concrete structure according to the invention; Be common refractory brick and special quality fire-brick shown in the figure, because its Dimensions is identical with the preparation method, working lining is 1, and thermal insulation layer is 2.
Fig. 2 is that A shown in Figure 1 is to view;
Fig. 3 is the concrete sketch map that uses of composite refractory brick according to the invention.
The specific embodiment
Specific embodiment
As shown in the figure, composite refractory brick according to the invention is divided into Dimensions identical common refractory brick and special quality fire-brick, and common refractory brick and special quality fire-brick all are made up of working lining 1 and thermal insulation layer 2,
It is characterized in that, be combined with interfacial agents and binding agent between working lining 1 and the thermal insulation layer 2;
Said interfacial agents is with the fluorite powder, floats pearl, sub-white corundum hollow ball, mullite hollow ball, ball clay powder, silicon ash proportionally, utilizes inorganic bond furnishing pulpous state to process; Purpose is to stop the heat conduction of calcining materials in the working lining bricklaying surface and consume, and makes working lining 1 and thermal insulation layer 2 be combined into overall structure;
Said binding agent is meant inorganic bond, for example wherein one or several the mixing of phenolic resin glue, polyvinyl acetate resin adhesive, Lauxite.
The preparation method of said composite refractory brick is following steps:
Step 1); The working lining 1 of said common refractory brick or special quality fire-brick is to be common refractory brick or special quality fire-brick raw material that 8% aluminium dihydrogen phosphate mixes, to add water moistening with accounting for total weight parts, through the compacting of 500-650 ton forcing press; Be shaped to blank; After breaking away from mould, an end of working lining 1 forms the alternate groove shape adhesive interface of convex-concave, obtains the blank of common refractory brick or special quality fire-brick working lining 1;
Step 2), on the adhesive interface of working lining 1 blank that step 1) obtains, be coated with one deck interfacial agents, coating adhesive on interfacial agents again obtains the blank of working lining 1 to be processed;
Step 3) is step 2) blank of the working lining to be processed 1 that obtains, refill into finished product mould; Add the mixed material of thermal insulation layer 2 in adhesive interface one side of working lining 1; It is the mixing of 8% aluminium dihydrogen phosphate that adding accounts for total weight parts, it is moistening to add water, through forcing press compression moulding, behind the disengaging mould; Form the combination of working lining 1 and thermal insulation layer 2, obtain the common refractory brick or the special quality fire-brick blank of composite refractory brick according to the invention;
Step 4), the common refractory brick or the special quality fire-brick blank that obtain step 3) at 500-550 ℃ of environment, keep drying processing under 48 hours the condition at least, obtain common refractory brick or special quality fire-brick finished product.
Raw material, specification and the weight portion of said common refractory brick work layer 1 are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. carborundum---specification 0.075mm---weight portion 3-5 part;
The raw material of said common refractory brick thermal insulation layer 2, specification and weight portion are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. float pearl---density 0.4g/cm
3---specification 0.425-0.633mm---weight portion 25-30 part;
6. light ceramic---density 0.6g/cm
3---specification 0.85-1mm---weight portion 15-18 part;
7. carborundum---specification 0.075mm---weight portion 3-5 part;
The raw material of said special quality fire-brick working lining 1, specification and weight portion are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. white fused alumina---specification 0.043mm---weight portion 5-8 part;
Carborundum---specification 0.075mm---weight portion 3-5 part;
Mullite---specification 0.088mm---weight portion 8-10 part;
The raw material of said special quality fire-brick thermal insulation layer 2, specification and weight portion are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. white fused alumina---specification 0.043mm---weight portion 5-8 part;
6. carborundum---specification 0.075mm---weight portion 3-5 part;
7. mullite---specification 0.088mm---weight portion 8-10 part;
8. float pearl---density 0.4g/cm
3---specification 0.425-0.633mm---weight portion 25-30 part;
9. light ceramic---density 0.6g/cm
3---specification 0.85-1mm---weight portion 15-18 part.
The consumption of common refractory brick work layer according to the invention, common refractory brick thermal insulation layer, special quality fire-brick working lining, special quality fire-brick thermal insulation layer raw material and weight portion, specification (specification is meant the granularity of each raw material); Grope in a large number to sum up to draw through the inventor, each component consumption and specification all have comparatively desirable effect in above-mentioned scope.
Concrete use-case: the sincere prosperous refractory material Co., Ltd in Dengfeng City, Henan Province, utilize rotary kiln specific complex refractory brick according to the invention to build refractory material aggregate sintering rotary kiln by laying bricks or stones; Be 18-20 month average life, is 1-2 times of like product.
Record concrete physical and chemical index such as following table
Above numeral shows that all concrete physical and chemical indexs all are superior to other like product.
Claims (3)
1. rotary kiln specific complex refractory brick; Be divided into Dimensions identical common refractory brick and special quality fire-brick; Common refractory brick and special quality fire-brick all are made up of working lining (1) and thermal insulation layer (2), it is characterized in that, are combined with interfacial agents and binding agent between working lining (1) and the thermal insulation layer (2);
Said interfacial agents is with the fluorite powder, floats pearl, sub-white corundum hollow ball, mullite hollow ball, ball clay powder, silicon ash proportionally, utilizes inorganic bond furnishing pulpous state to process;
Said binding agent is meant inorganic bond, is wherein one or several the mixing of phenolic resin glue, polyvinyl acetate resin adhesive, Lauxite.
2. according to the described rotary kiln specific complex of claim 1 refractory brick, it is characterized in that the preparation method of said composite refractory brick is following steps:
Step 1); The working lining (1) of said common refractory brick or special quality fire-brick is to be common refractory brick or special quality fire-brick raw material that 8% aluminium dihydrogen phosphate mixes, to add water moistening with accounting for total weight parts, through the compacting of 500-650 ton forcing press; Be shaped to blank; After breaking away from mould, an end of working lining (1) forms the alternate groove shape adhesive interface of convex-concave, obtains the blank of common refractory brick or special quality fire-brick working lining (1);
Step 2), on the adhesive interface of working lining (1) blank that step 1) obtains, be coated with one deck interfacial agents, coating adhesive on interfacial agents again obtains the blank of working lining to be processed (1);
Step 3) is step 2) blank of the working lining to be processed (1) that obtains, refill into finished product mould; Add the mixed material of thermal insulation layer (2) in adhesive interface one side of working lining (1); It is the mixing of 8% aluminium dihydrogen phosphate that adding accounts for total weight parts, it is moistening to add water, through forcing press compression moulding, behind the disengaging mould; Form the combination of working lining (1) and thermal insulation layer (2), obtain the common refractory brick or the special quality fire-brick blank of composite refractory brick according to the invention;
Step 4), the common refractory brick or the special quality fire-brick blank that obtain step 3) at 500-550 ℃ of environment, keep drying processing under 48 hours the condition at least, obtain common refractory brick or special quality fire-brick finished product.
3. according to claim 1 or 2 described rotary kiln specific complex refractory brick, it is characterized in that raw material, specification and the weight portion of said common refractory brick work layer (1) are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. carborundum---specification 0.075mm---weight portion 3-5 part;
Raw material, specification and the weight portion of said common refractory brick thermal insulation layer (2) are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. float pearl---density 0.4g/cm
3---specification 0.425-0.633mm---weight portion 25-30 part;
6. light ceramic---density 0.6g/cm
3---specification 0.85-1mm---weight portion 15-18 part;
7. carborundum---specification 0.075mm---weight portion 3-5 part;
Raw material, specification and the weight portion of said special quality fire-brick working lining (1) are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. white fused alumina---specification 0.043mm---weight portion 5-8 part;
Carborundum---specification 0.075mm---weight portion 3-5 part;
Mullite---specification 0.088mm---weight portion 8-10 part;
Raw material, specification and the weight portion of said special quality fire-brick thermal insulation layer (2) are respectively:
1. bauxite clinker---specification 0.1-1mm---weight portion 10-20 part;
2. bauxite clinker---specification 1.1-3mm---weight portion 10-25 part;
3. bauxite clinker---specification 3.1-5mm---weight portion 10-15 part;
4. bauxite clinker---specification 5.1-8mm---weight portion 4-6.5 part;
5. white fused alumina---specification 0.043mm---weight portion 5-8 part;
6. carborundum---specification 0.075mm---weight portion 3-5 part;
7. mullite---specification 0.088mm---weight portion 8-10 part;
8. float pearl---density 0.4g/cm
3---specification 0.425-0.633mm---weight portion 25-30 part;
9. light ceramic---density 0.6g/cm
3---specification 0.85-1mm---weight portion 15-18 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103272812A CN102788497A (en) | 2012-09-07 | 2012-09-07 | Special composite firebrick for rotary kiln and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103272812A CN102788497A (en) | 2012-09-07 | 2012-09-07 | Special composite firebrick for rotary kiln and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102788497A true CN102788497A (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103272812A Pending CN102788497A (en) | 2012-09-07 | 2012-09-07 | Special composite firebrick for rotary kiln and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058687A (en) * | 2013-01-25 | 2013-04-24 | 苏州罗卡节能科技有限公司 | Middle-density high-alumina brick for revolving kiln and preparation method of brick |
| CN103058685A (en) * | 2013-01-25 | 2013-04-24 | 苏州罗卡节能科技有限公司 | Medium-density silicon mullite brick used for rotary kiln and preparation method thereof |
| CN103058682A (en) * | 2013-01-25 | 2013-04-24 | 苏州罗卡节能科技有限公司 | Medium-density brick used for rotary kiln and preparation method thereof |
| CN103234352A (en) * | 2013-04-17 | 2013-08-07 | 无锡远能耐火材料有限公司 | Low-heat-conduction composite brick |
| CN103868364A (en) * | 2014-02-27 | 2014-06-18 | 中国科学院力学研究所 | Furnace type cooling device |
| EP2784421A1 (en) * | 2013-03-27 | 2014-10-01 | Refractory Intellectual Property GmbH & Co. KG | Arch brick for the cylindrical inner lining of a rotary drum furnace and rotary drum furnace |
| CN104567412A (en) * | 2013-10-11 | 2015-04-29 | 宁夏琪凯节能设备有限公司 | Energy-saving composite refractory brick |
| CN104677112A (en) * | 2015-02-04 | 2015-06-03 | 辽宁伊菲科技股份有限公司 | High-nitrogen composite ceramic lining brick kiln |
| CN104949514A (en) * | 2015-06-26 | 2015-09-30 | 浙江华耐科技有限公司 | Refractory brick |
| CN104949513A (en) * | 2015-06-26 | 2015-09-30 | 浙江华耐科技有限公司 | Refractory brick |
| CN106242598A (en) * | 2016-08-05 | 2016-12-21 | 重庆钢铁集团矿业有限公司冶金材料厂 | Inner liner of rotary kiln brick, liner composite brick and manufacture method thereof |
| CN113248267A (en) * | 2021-03-29 | 2021-08-13 | 宜兴市海科窑炉工程有限公司 | High-strength silicon carbide composite refractory brick for garbage incinerator and preparation method thereof |
| CN115368147A (en) * | 2022-07-03 | 2022-11-22 | 江苏苏嘉集团新材料有限公司 | Adhesive for producing sintered refractory bricks |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058687A (en) * | 2013-01-25 | 2013-04-24 | 苏州罗卡节能科技有限公司 | Middle-density high-alumina brick for revolving kiln and preparation method of brick |
| CN103058685A (en) * | 2013-01-25 | 2013-04-24 | 苏州罗卡节能科技有限公司 | Medium-density silicon mullite brick used for rotary kiln and preparation method thereof |
| CN103058682A (en) * | 2013-01-25 | 2013-04-24 | 苏州罗卡节能科技有限公司 | Medium-density brick used for rotary kiln and preparation method thereof |
| EP2784421A1 (en) * | 2013-03-27 | 2014-10-01 | Refractory Intellectual Property GmbH & Co. KG | Arch brick for the cylindrical inner lining of a rotary drum furnace and rotary drum furnace |
| WO2014154364A1 (en) * | 2013-03-27 | 2014-10-02 | Refractory Intellectual Property Gmbh & Co. Kg | Arch brick, cylindrical internal lining of a rotary kiln and rotary kiln |
| CN103234352A (en) * | 2013-04-17 | 2013-08-07 | 无锡远能耐火材料有限公司 | Low-heat-conduction composite brick |
| CN104567412A (en) * | 2013-10-11 | 2015-04-29 | 宁夏琪凯节能设备有限公司 | Energy-saving composite refractory brick |
| CN103868364A (en) * | 2014-02-27 | 2014-06-18 | 中国科学院力学研究所 | Furnace type cooling device |
| CN104677112A (en) * | 2015-02-04 | 2015-06-03 | 辽宁伊菲科技股份有限公司 | High-nitrogen composite ceramic lining brick kiln |
| CN104949514A (en) * | 2015-06-26 | 2015-09-30 | 浙江华耐科技有限公司 | Refractory brick |
| CN104949513A (en) * | 2015-06-26 | 2015-09-30 | 浙江华耐科技有限公司 | Refractory brick |
| CN106242598A (en) * | 2016-08-05 | 2016-12-21 | 重庆钢铁集团矿业有限公司冶金材料厂 | Inner liner of rotary kiln brick, liner composite brick and manufacture method thereof |
| CN106242598B (en) * | 2016-08-05 | 2019-05-17 | 重庆钢铁集团矿业有限公司冶金材料厂 | Inner liner of rotary kiln brick, liner composite brick and its manufacturing method |
| CN113248267A (en) * | 2021-03-29 | 2021-08-13 | 宜兴市海科窑炉工程有限公司 | High-strength silicon carbide composite refractory brick for garbage incinerator and preparation method thereof |
| CN115368147A (en) * | 2022-07-03 | 2022-11-22 | 江苏苏嘉集团新材料有限公司 | Adhesive for producing sintered refractory bricks |
| CN115368147B (en) * | 2022-07-03 | 2023-09-08 | 江苏苏嘉集团新材料有限公司 | Adhesive for producing sintered refractory bricks |
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