CN102731116B - Backing plate for roller kiln - Google Patents

Backing plate for roller kiln Download PDF

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Publication number
CN102731116B
CN102731116B CN201210224874.6A CN201210224874A CN102731116B CN 102731116 B CN102731116 B CN 102731116B CN 201210224874 A CN201210224874 A CN 201210224874A CN 102731116 B CN102731116 B CN 102731116B
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CN
China
Prior art keywords
parts
backing plate
water
roller kiln
temperature resistant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201210224874.6A
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Chinese (zh)
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CN102731116A (en
Inventor
易乾亨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING GOTHIC CERAMIC MOSAICS MANUFACTURING Co Ltd
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CHONGQING GOTHIC CERAMIC MOSAICS MANUFACTURING Co Ltd
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Priority to CN201210224874.6A priority Critical patent/CN102731116B/en
Publication of CN102731116A publication Critical patent/CN102731116A/en
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Publication of CN102731116B publication Critical patent/CN102731116B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a backing plate for a roller kiln and also relates to a fireproof hard material. Main points of the technical scheme are as follows: raw materials comprise, by weight, 5-7 parts of a material A and 3-5 parts of a material B; the two materials are mixed, compacted and sintered to obtain the backing plate; the material A is powders and comprises, by weight, 20-30 parts of a high temperature resistant matrix, 30-45 parts of alumina, 5-15 parts of calcine talcum, 15-30 parts of clay, 0.3-0.5 part of sodium tripolyphosphate and 0.2-0.5 part of carboxymethylcellulose sodium; and the material B is granules and comprises, by weight, 75-80 parts of high temperature resistant matrix particles and 20-25 parts of cast bauxitic clay particles. The backing plate provided by the invention has advantages of short sintering period, low temperature and high production efficiency, is an energy-saving environmentally-friendly low-cost high-performance refractory material product, and has wide industrial applications.

Description

Roller kiln backing plate
Technical field
The present invention relates to the backing plate that a kind of roller kiln are used, also relate to fire-resistant mechanically resistant material.
Background technology
Roller kiln, are mainly used in the production of the ceramic building materials such as ceramic tile.Roller kiln are kilns of continuous burnt, and the backing plate of usining on rotating roller rod is as base substrate launch vehicle; Be exactly that ceramic product is placed on backing plate specifically, backing plate is placed on the many horizontal refractory roll rods that interval is very close, and the rotation of roller rest rod makes ceramic be sent to kiln tail from kiln hood, simultaneously by high-temperature firing moulding.
Therefore the roller rod in roller kiln and backing plate all must be high temperature resistant and wear-resisting.Existing roller kiln with in the large multiplex synthesis of dichroite of backing plate that uses by crushing and screening, become different-grain diameter level, be equipped with clay powder, base substrate toughener etc., add the water of 10% left and right to be mixed into wet feed, then old, suppress, be dried, fire and form.
Existing roller kiln are as follows with the representative formula of backing plate:
Synthesis of dichroite (particle diameter 0.5~1.0mm) 30%~40%, synthesis of dichroite (particle diameter 0.048~0.5mm) 20%~30%, synthesis of dichroite (particle diameter 0~0.048mm) 5%~10%, alumina powder 10%~15%, andaluzite powder 10%~15%, clay powder 5%~10%, Xylo-Mucine 0.1%~0.5%.Its production technique is accordingly: first batch mixing, and then repeatedly compacting, dry, then fires, and 1400 ℃ of firing temperatures, firing period 24~48h obtain finished product.
The physicochemical property of such backing plate can meet need of production, but exist burn till temperature high, energy consumption is high; Firing period length, the defect yielding poorly.
Summary of the invention
Main purpose of the present invention is to provide a kind of roller kiln backing plate, backing plate energy-saving production technology environmental protection for these roller kiln, and production efficiency is high.
The technical solution used in the present invention is: a kind of roller kiln backing plate, is characterized in that:
Comprise A material and B material, A material and B expect 5~7 parts, proportioning: A material, 3~5 parts, B material by weight, and both mix, suppress, then burn till and obtain;
Wherein, A material, for powder, comprising: 20 parts~30 parts of high temperature resistant matrix, 30 parts~45 parts, aluminum oxide, 5 parts~15 parts of calcination of talc, 15 parts~30 parts of clays, 0.3 part~0.5 part of tripoly phosphate sodium STPP, 0.2 part~0.5 part of Xylo-Mucine;
B material, for particulate material, comprising: 75 parts~80 parts of high temperature resistant matrix granules, 20 parts~25 parts of cast alumin(i)um alumina particles.
Also can regard that A material is for powder as, B material is aggregate, or perhaps A material is that fine powder, B material are meal.
Further, described high temperature resistant matrix is a kind of or mixture in the backing plate of synthesis of dichroite, trichroite, pottery, fire-resistant stone material, damage.
Further, described plate thickness is 9~9.5mm.
Further, described A expect first ball milling to more than 250 orders≤1% fineness; B material is the fineness below 8 orders.
Further, described A expects that adding water mixes; Ball milling to 250 mesh sieves≤1%, mud moisture content 33~35%; Then the material powder of spray-dried water ratio 9~11%;
The B of fineness below 8 orders material adds after 10 parts of mixing of water and joins in above-mentioned A material and mix;
After old, the setting pressure compression moulding of 20~25MPa, is then dried to moisture lower than 1%;
Then burn till and obtain, burn till 1200~1250 ℃ of top temperatures, firing period 40~60min.
Further, described A expects that adding 40~50 parts, water carries out ball milling.
Useful technique effect of the present invention is:
Ceramic exterior wall brick enterprise, when producing with roller-way backing plate kiln, all can produce a certain amount of damaged backing plate every day.The backing plate that these are damaged, the enterprise that some enterprises outwell, have when rubbish can add in ornamental brick base substrate on a small quantity, and these two kinds of ways all can cause great waste.The present invention uses that damaged roller kiln pallet is unified to be reclaimed in a large number, and give up ceramic tile, waste paper of sort out such as opens at the impurity, then by crusher in crushing, is different fineness, just can be used as high temperature resistant matrix and used.So recycle material of the present invention, low production cost.
And backing plate firing period of the present invention is short, and firing temperature is low, energy-conserving and environment-protective have significantly improved production efficiency and have reduced production energy consumption; Production efficiency improves 10 times compared with prior art.
Product appearance is regular, densification is even, indeformable, do not ftracture etc.;
Roller kiln are wear-resisting durable with backing plate.Loading stocks enters kiln, furnace heating-up, cooling kiln discharge, unloads product is a production cycle.By making a mark respectively with company existing outsourcing backing plate, with the random loading stocks of equal amts sample, enter kiln production cycle, pick up respectively every day and select damaged backing plate sample and record statistics, contrast round-robin test is found, within 5 days, left and right outsourcing backing plate starts to occur breakage, and backing plate of the present invention just starts to occur damaged about 7 days; Damaged 25% left and right of outsourcing backing plate in the time of 10 days, backing plate breakage rate of the present invention is only 10%.
Product thickness is low, economizes on resources, and is also beneficial to firing period and shortens, Energy Intensity Reduction; Can guarantee the structure properties of backing plate again simultaneously.
Embodiment
For making those skilled in the art understand in detail production technique of the present invention and technique effect, with preferred production instance, further introduce application of the present invention and technique effect below.
Embodiment mono-
Technical recipe:
20 parts, useless backing plate powder, 45 parts of aluminum oxide powders, 15 parts of calcination of talc, 20 parts of clays, 0.4 part of tripoly phosphate sodium STPP, 0.5 part of Xylo-Mucine, 50 parts of ball millings of water become mud, 250 orders fineness above≤1%, mud moisture content 33%-35%; Then be spray dried into water ratio 10%; Become A material standby;
10 parts, 75 parts, useless backing plate below 8 orders, 25 parts, the following cast alumin(i)um alumina of 8 order, water are evenly mixed in A material; That is to say that two kinds of materials all reached the fineness of 8 mesh sieves, lower same.
Utilize the compression moulding of disposal molding machine, equipment setting pressure 20MPa, is then dried to water ratio with dry kiln and is less than 1%;
Burn till top temperature and set 1230 ℃, firing period 45min, obtains finished product 1.
Embodiment bis-
25 parts, useless backing plate powder, 35 parts of aluminum oxide powders, 12 parts of calcination of talc, 25 parts of clays, 0.3 part of tripoly phosphate sodium STPP, 0.5 part of Xylo-Mucine, 50 parts of ball millings of water become mud, 250 orders fineness above≤1%, mud moisture content 33%-35%; Then be spray dried into water ratio 11%; Become A material standby;
10 parts, 80 parts, useless backing plate below 8 orders, 20 parts, the following cast alumin(i)um alumina of 8 order, water are evenly mixed in A material;
Utilize the compression moulding of disposal molding machine, equipment setting pressure 23MPa; Then with dry kiln, be dried to water ratio and be less than 1%;
Use other exterior wall tile products multifuel combustion in roller-way backing plate kiln of roller kiln and design variable adaptation, do not change the system of burning till of currently available products, top temperature is set 1200 ℃, and firing period 40min, obtains finished product 2.The firing period that the firing period of exterior wall tile comprises backing plate.
Embodiment tri-
Technical recipe:
22 parts, useless backing plate powder, 30 parts of aluminum oxide powders, 8 parts of calcination of talc, 15 parts of clays, 0.4 part of tripoly phosphate sodium STPP, 0.2 part of Xylo-Mucine, 45 parts of ball millings of water become mud, 250 orders fineness above≤1%, mud moisture content 33%-35%; Then be spray dried into water ratio 9%; Become A material standby;
10 parts, 80 parts, useless backing plate below 8 orders, 20 parts, the following cast alumin(i)um alumina of 8 order, water are evenly mixed in A material;
Utilize the compression moulding of disposal molding machine, equipment setting pressure 20MPa; Then with dry kiln, be dried to water ratio and be less than 1%;
Burn till top temperature and set 1200 ℃, firing period 40min, obtains finished product 3.
Embodiment tetra-
Technical recipe:
Synthesis of dichroite powder becomes mud with a small amount of broken ceramic 30 parts, 45 parts of aluminum oxide powders, 15 parts of calcination of talc, 30 parts of clays, 0.5 part of tripoly phosphate sodium STPP, 0.5 part of Xylo-Mucine, 50 parts of ball millings of water, 250 orders fineness above≤1%, mud moisture content 33%-35%; Then be spray dried into water ratio 10%; Become A material standby;
10 parts, 80 parts, useless backing plate below 8 orders, 25 parts, the following cast alumin(i)um alumina of 8 order, water are evenly mixed in A material;
Utilize the compression moulding of disposal molding machine, equipment setting pressure 25MPa, does not ravel as long as base substrate is solid; Then with dry kiln, be dried to water ratio and be less than 1%;
Burn till top temperature and set 1230 ℃, firing period 45min, obtains finished product 4.
Embodiment five
Technical recipe:
20 parts, useless backing plate powder, 30 parts of aluminum oxide powders, 5 parts of calcination of talc, 15 parts of clays, 0.3 part of tripoly phosphate sodium STPP, 0.2 part of Xylo-Mucine, 40 parts of ball millings of water become mud, 250 orders fineness above≤1%, mud moisture content 33%-35%; Then be spray dried into water ratio 9%; Become A material standby;
10 parts, 80 parts, useless backing plate below 8 orders, 20 parts, the following cast alumin(i)um alumina of 8 order, water are evenly mixed in A material;
Utilize the compression moulding of disposal molding machine, equipment setting pressure 25MPa; Then with dry kiln, be dried to water ratio and be less than 1%;
Burn till top temperature and set 1250 ℃, firing period 40min, obtains finished product 5.
5 above-mentioned set products and the physicals of existing backing plate are carried out simultaneous test detection, detected result (technical indicator is enterprise's internal control index) as shown in the table:
As seen from the above table, product of the present invention has not only utilized waste resource, and firing temperature is low, the time is short, and production efficiency is high, cost is low; Product overall performance also significantly improves compared with prior art simultaneously; Especially aspect refractoriness under load, significantly improve, make the range of application of product, operating temperature range significantly improves, convenient production and use.

Claims (3)

1. a roller kiln backing plate, is characterized in that:
Comprise A material and B material, A material and 5~7 parts, B material proportioning: A material, 3~5 parts, B material by weight, B material adds and joins above-mentioned A after 10 parts of mixing of water and mix in expecting; After old, compression moulding under the setting pressure of 20~25 MPa, is then dried to moisture lower than 1%; Then burn till and obtain, burn till 1200~1250 ℃ of top temperatures, firing period 40~60min;
Wherein, A material, for powder, comprising: 20 parts~30 parts of high temperature resistant matrix, 30 parts~45 parts, aluminum oxide, 5 parts~15 parts of calcination of talc, 15 parts~30 parts of clays, 0.3 part~0.5 part of tripoly phosphate sodium STPP, 0.2 part~0.5 part of Xylo-Mucine; A material adds water and mixes; Ball milling to 250 mesh sieves≤1%, mud moisture content 33~35%; Then the material powder of spray-dried water ratio 9~11%;
B material, for particulate material, comprising: 75 parts~80 parts of high temperature resistant matrix granules, 20 parts~25 parts of cast alumin(i)um alumina particles; B material is the fineness below 8 orders;
Described plate thickness is 9~9.5mm.
2. roller kiln backing plate according to claim 1, is characterized in that: high temperature resistant matrix is a kind of or mixture in the backing plate of pottery, fire-resistant stone material, damage.
3. roller kiln backing plate according to claim 1, is characterized in that: described A material adds 40~50 parts, water and carries out ball milling.
CN201210224874.6A 2012-06-30 2012-06-30 Backing plate for roller kiln Expired - Fee Related CN102731116B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN102731116B true CN102731116B (en) 2014-02-26

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105084919A (en) * 2015-08-27 2015-11-25 广东尚高科技有限公司 Ceramic sintering antisticking coating, preparation method and application
CN110818384B (en) * 2019-12-24 2022-04-08 惠达卫浴股份有限公司 Preparation method of biscuit firing plate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1160029A (en) * 1995-04-11 1997-09-24 日本碍子株式会社 Kiln furniture
CN102173834A (en) * 2011-01-20 2011-09-07 安徽宁火新材料有限公司 Roller kiln white backing plate and processing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1160029A (en) * 1995-04-11 1997-09-24 日本碍子株式会社 Kiln furniture
CN102173834A (en) * 2011-01-20 2011-09-07 安徽宁火新材料有限公司 Roller kiln white backing plate and processing method thereof

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