JPS62197371A - Heat-resistant and heat-insulative tar-like substance adhesion preventive heat-insulative ceramic coating composition for protecting coke oven inside wall and oven lid - Google Patents
Heat-resistant and heat-insulative tar-like substance adhesion preventive heat-insulative ceramic coating composition for protecting coke oven inside wall and oven lidInfo
- Publication number
- JPS62197371A JPS62197371A JP61039170A JP3917086A JPS62197371A JP S62197371 A JPS62197371 A JP S62197371A JP 61039170 A JP61039170 A JP 61039170A JP 3917086 A JP3917086 A JP 3917086A JP S62197371 A JPS62197371 A JP S62197371A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- heat
- tar
- oxide
- 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.)
- Granted
Links
- 239000000126 substance Substances 0.000 title claims description 27
- 239000000571 coke Substances 0.000 title claims description 20
- 239000008199 coating composition Substances 0.000 title claims description 16
- 238000005524 ceramic coating Methods 0.000 title claims description 7
- 230000003449 preventive effect Effects 0.000 title 1
- 238000000576 coating method Methods 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 17
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 8
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 7
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 7
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 6
- 239000005751 Copper oxide Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 229910000431 copper oxide Inorganic materials 0.000 claims description 6
- 239000005350 fused silica glass Substances 0.000 claims description 6
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 11
- 239000011819 refractory material Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 239000011449 brick Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052810 boron oxide Inorganic materials 0.000 description 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0008—Materials specified by a shape not covered by C04B20/0016 - C04B20/0056, e.g. nanotubes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、主にコークス炉炉内壁並びに炉蓋内壁保護用
の耐熱性および断熱性を有するタール状物質付着防止性
セラミック被覆組成物に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ceramic coating composition that prevents the adhesion of tar-like substances and has heat resistance and heat insulation properties, mainly for protecting the inner walls of coke ovens and the inner walls of oven lids.
コークス炉は石炭を約１１５０℃にて２０〜２５時間蒸
焼することによってコークスを製造するものであ。この
製造時に溶出するタール状物質はコークス炉炉内壁の耐
火材に付着し、浸透し、炭化しそして硬化する。この炭
化硬化したタール状物質は耐火材の融点を低下させ且つ
該耐火材の脆化の原因となる。また堆積するタール状物
質の為に炉蓋の開閉が困難になり−且つ炉蓋のコークス
炉に対する密封性も悪くなる。A coke oven produces coke by steaming coal at about 1150° C. for 20 to 25 hours. The tar-like substances eluted during this production adhere to the refractory material on the inner wall of the coke oven, penetrate, carbonize, and harden. This carbonized and hardened tar-like substance lowers the melting point of the refractory material and causes the refractory material to become brittle. Furthermore, the accumulated tar-like substances make it difficult to open and close the furnace lid - and the sealing of the furnace lid against the coke oven becomes poor.
この為、従来より、コークス炉炉蓋に関してはそれに付
着する炭化硬化したタール状物質を、耐火材の表面が出
来るだけ損傷しない程度に機械的に削り落とすことによ
って除いてきた。しかしこの方法では耐火材表面に炭化
硬化したタール状物質が５ｍｍ程度の厚さで残留し且つ
耐火材内部への浸透は防止できない。この方法では、コ
ークス炉炉蓋のコークス炉に対する密封性は達成される
が、コークス炉炉蓋の保護は達成されず、炉蓋の耐用寿
命は依然として短く、且つ炉内壁についての問題が全く
解決されていない。For this reason, conventionally, carbonized and hardened tar-like substances adhering to coke oven lids have been removed by mechanically scraping off the surface of the refractory material to the extent that it is not damaged as much as possible. However, with this method, carbonized and hardened tar-like substances remain on the surface of the refractory material to a thickness of approximately 5 mm, and penetration into the interior of the refractory material cannot be prevented. In this method, the sealing of the coke oven cover against the coke oven is achieved, but the protection of the coke oven cover is not achieved, the service life of the coke oven cover is still short, and the problem with the inner wall of the oven is not solved at all. Not yet.
またこの従来方法では、炉内壁に付着するタール状物質
により炉内容積が減ってしまうという欠点は別として、
炉蓋に関しては浸透したタール状物質を除（為に耐火材
自体の表面を削り取ることも実地においてしばしば必要
となり、その削り取り量も配慮した厚い炉蓋を用いてい
るのが現状である。このように厚い炉蓋を用いると、や
はり炉内容積を狭めてしまうことになり、コークス生産
の経済から不利である。In addition, with this conventional method, apart from the drawback that the internal volume of the furnace is reduced due to tar-like substances that adhere to the inner walls of the furnace,
Regarding furnace lids, it is often necessary in practice to scrape off the surface of the refractory material itself in order to remove penetrating tar-like substances, and the current situation is to use thick furnace lids that take into account the amount of scraping. If a thick furnace lid is used, the internal volume of the furnace will be narrowed, which is disadvantageous from the economic point of view of coke production.
従って本発明の課題は、耐熱性、断熱性およびタール状
物質付着防止性を有し且つ密封性の高いセラミ・ツク被
覆組成物を見出すことによって実用炉内容積を失うこと
なく、コークス生産性を経済的に高め並びに耐火材の耐
久性を増すことにある。Therefore, the object of the present invention is to improve coke productivity without losing practical furnace volume by finding a ceramic coating composition that has heat resistance, heat insulation, and tar-like substance adhesion prevention properties and has high sealing properties. The objective is to increase the economy and the durability of fireproof materials.
本発明者は特公昭５８−５２９５２にて既に工業用加熱
炉の炉内部用の被覆物として耐熱性、熱伝導性、密封性
および熱放射性の良好な下記の如きセラミック組成物を
提起した。即ちこのセラミック組成物は、
（ａ） ４０〜７５重景％の重量射材としての炭化珪素
、
（ｂ） １５〜４０重量％の、
窒化珪素３〜２０重量部、燐酸塩５〜２０重量部、酸化
クロム２〜１０重量部、炭化タンクル２〜１０重量部お
よびアルミニラ粉末５〜２０重量部
より成る熱放射助材並びにバインダー
および
（ｃ） １０〜３５重量％の、
酸化アルミニウム１〜１０重量部、ガラス粉末３〜１５
重量部、酸化ジルコニウム３〜１５重量部、二酸化珪素
１〜１０重量部、酸化マグネシウム１〜１０重量部およ
び酸化鉄１〜１０重量部
より成る密着性や塗膜間結合強度を高める添加物
を含有するものである。The present inventor has already proposed in Japanese Patent Publication No. 58-52952 the following ceramic composition which has good heat resistance, thermal conductivity, sealing performance and heat radiation properties as a coating for the inside of an industrial heating furnace. That is, this ceramic composition comprises: (a) 40-75% by weight of silicon carbide as a gravimetric material; (b) 15-40% by weight of 3-20 parts by weight of silicon nitride and 5-20 parts by weight of phosphate. , 2 to 10 parts by weight of chromium oxide, 2 to 10 parts by weight of carbide tanks and 5 to 20 parts by weight of alumina powder, and (c) 10 to 35% by weight of aluminum oxide, 1 to 10 parts by weight. , glass powder 3-15
Contains additives that improve adhesion and intercoating bond strength, consisting of 3 to 15 parts by weight of zirconium oxide, 1 to 10 parts by weight of silicon dioxide, 1 to 10 parts by weight of magnesium oxide, and 1 to 10 parts by weight of iron oxide. It is something to do.
しかしこの熱放射性セラミック組成物は、コークス炉炉
内壁並びに炉蓋において、耐熱性に関しては満足できる
が、タール状物質付着防止性、断熱性は必ずしも充分満
足する結果をもたらしていない（後記比較例参照）。However, although this thermally emissive ceramic composition is satisfactory in terms of heat resistance on the inner wall and lid of the coke oven, it does not necessarily provide sufficiently satisfactory results in terms of prevention of tar-like substance adhesion and heat insulation properties (see comparative example below). ).
本発明者は、コークス炉内の過酷な条件下でも充分な耐
熱効果の他に、優れたタール状物質付着防止効果および
断熱効果を達成するセラミック被覆組成物を鋭意研究し
、その結果以下の組成のものがこれを満足しうろことを
見出した。The present inventor has conducted extensive research into a ceramic coating composition that achieves sufficient heat resistance even under the harsh conditions inside a coke oven, as well as excellent tar-like substance adhesion prevention and heat insulation effects, and has found the following composition: I found that some people were satisfied with this.
即ち、本発明の対象は、
（ａ） ２０〜５０重量％の、
炭化珪素３０〜５０重量部、窒化珪素２０〜４０重量部
、マイカ状酸化アルミニウム２０〜４０重量゛部、酸化
ジルコニウム１０〜２５重量部、マイカ粉５〜１５重量
部および酸化硼素５〜１５重量部
より成る耐熱性およびタール状物質浸透防止性の付与材
、
（ｂ） １５〜４０重量％の、
燐酸塩４０〜７０重量部、酸化イツトリウム１５〜３０
重量部、溶融シリカ１５〜３０重量部、高融点ガラス粉
５〜２０重量部、低融点ガラス粉５〜２０重量部、酸化
銅５〜２０重量部および酸化クロム５〜２０重量部
より成る密着性、塗膜間結合強度およびタール状物質付
着防止性の付与材並びにパインダ−および
（ｃ）５〜２０重量％の断熱性付与材としてのチタン酸
カリウム繊維
より成りそしてその成分ａ）、ｂ）およびＣ）の合計が
１００重量％であることを特徴とする、コークス炉炉内
壁並びに炉蓋保護用の耐熱性、断熱性およびタール状物
質付着防止性を有するセラミック被覆組成物である。That is, the object of the present invention is (a) 20 to 50% by weight of 30 to 50 parts by weight of silicon carbide, 20 to 40 parts by weight of silicon nitride, 20 to 40 parts by weight of mica-like aluminum oxide, and 10 to 25 parts by weight of zirconium oxide. (b) 15-40% by weight of a phosphate, 40-70 parts by weight; , yttrium oxide 15-30
Parts by weight, 15 to 30 parts by weight of fused silica, 5 to 20 parts by weight of high melting point glass powder, 5 to 20 parts by weight of low melting point glass powder, 5 to 20 parts by weight of copper oxide, and 5 to 20 parts by weight of chromium oxide. , a binder for imparting inter-coating bond strength and tar-like substance adhesion prevention properties, and a binder; and (c) 5 to 20% by weight of potassium titanate fibers as an insulating properties imparting agent, and its components a), b), and A ceramic coating composition having heat resistance, heat insulation properties, and tar-like substance adhesion prevention properties for protecting coke oven inner walls and oven lids, characterized in that the sum of C) is 100% by weight.
各成分の各化合物の使用量に関する臨界的意義を以下に
記す。The critical meaning regarding the usage amount of each compound of each component is described below.
（ａ）成分の耐熱性およびタール状物質浸透防止性の付
与材として働く各成分は全成分の合計に対して２０〜５
０重量％の範囲にする必要がある。(a) Each component that acts as an agent for imparting heat resistance and tar-like substance penetration prevention properties is 20 to 5% of the total of all components.
It is necessary to keep it in the range of 0% by weight.
（ａ）成分を組成する各化合物の割合は、炭化珪素３０
〜５０重量部、窒化珪素２０〜４０重量部、マイカ状酸
化アルミニウム２０〜４０重１部、酸化ジルコニウム１
０〜２５重１部、マイカ粉５〜１５重量部および酸化硼
素５〜１５重量部
である（但し、これら化合物の合計は常に１００重量部
である）。この範囲を越えると耐火材の熱膨張への追従
が困難になり、被覆物の剥落の原因になる。また炭化珪
素が３０重量部、酸化ジルコニウムが１０重量部より少
ない場合には塗膜の気密性が損なわれ耐熱性が低下する
。窒化珪素が２０重量部より少ない場合には炭化珪素と
の結合力が弱まり塗膜硬度が低下する。マイカ状酸化ア
ルミニウムが２０重量部、酸化硼素およびマイカ粉が５
重量部より少ない場合には塗膜中タール状物質の浸入を
阻止する効果が認められない。The ratio of each compound composing component (a) is 30% silicon carbide.
~50 parts by weight, 20 to 40 parts by weight of silicon nitride, 1 part by weight of mica-like aluminum oxide, 1 part by weight of zirconium oxide
0-25 parts by weight, 5-15 parts by weight of mica powder, and 5-15 parts by weight of boron oxide (however, the total of these compounds is always 100 parts by weight). If this range is exceeded, it becomes difficult to follow the thermal expansion of the refractory material, causing the coating to peel off. If the amount of silicon carbide is less than 30 parts by weight and the amount of zirconium oxide is less than 10 parts by weight, the airtightness of the coating film will be impaired and the heat resistance will be reduced. When the amount of silicon nitride is less than 20 parts by weight, the bonding force with silicon carbide is weakened and the hardness of the coating film is decreased. 20 parts by weight of mica-like aluminum oxide, 5 parts by weight of boron oxide and mica powder
If the amount is less than 1 part by weight, no effect on preventing tar-like substances from penetrating into the coating film will be observed.
封着性、塗膜間結合強度およびタール状物質付着防止性
を付゛与し且つバインダーとして働く（ｂ）成分の合計
に対して１５〜４０重量％の範囲にする必要がある。It is necessary that the amount is in the range of 15 to 40% by weight based on the total amount of component (b), which provides sealing properties, intercoating bond strength, and tar-like substance adhesion prevention properties and acts as a binder.
（ｂ）成分を組成する個々の化合物およびそれらの割合
は、
燐酸塩４０〜７０重量部、酸化イツトリウム１５〜３０
重量部、溶融シリカ１５〜３０重量部、高融点ガラス粉
５〜２０重量部、低融点ガラス粉５〜２０重量部、酸化
銅５〜２０重量部およ。(b) The individual compounds constituting the component and their proportions are: 40 to 70 parts by weight of phosphate, 15 to 30 parts by weight of yttrium oxide.
parts by weight, 15 to 30 parts by weight of fused silica, 5 to 20 parts by weight of high melting point glass powder, 5 to 20 parts by weight of low melting point glass powder, 5 to 20 parts by weight of copper oxide.
び酸化クロム５〜２０重量部
である（但し、これら化合物の合計は常に１００重量部
である）。and 5 to 20 parts by weight of chromium oxide (however, the total of these compounds is always 100 parts by weight).
バインダーとして働く燐酸塩が４０重量部より少ない場
合、高融点ガラス粉（８００℃で溶融する）および低融
点ガラス粉（４００℃で溶融する）が各５重量部より少
ない場合にはバインダー効果が得られず剥落の原因とな
る。When the amount of phosphate acting as a binder is less than 40 parts by weight, and when the amount of high melting point glass powder (melting at 800°C) and low melting point glass powder (melting at 400°C) is less than 5 parts by weight each, no binder effect is obtained. This may cause peeling.
また高融点ガラス粉および低融点ガラス粉が各２０重量
部を超える場合塗膜中に溶融ガラス物質が多くなりその
塗膜は軟化し、充分な塗膜硬度が得られない。If the amount of the high melting point glass powder and the low melting point glass powder exceeds 20 parts by weight each, the amount of molten glass substance in the coating film will increase, the coating will become soft, and sufficient coating hardness will not be obtained.
更に、高融点ガラス粉と低融点ガラス粉との使用割合（
重量）が１：１である場合には、燐酸塩の４００℃にお
ける一次焼結および８００℃における二次焼結と関連し
てこれら両方のガラスが上記の効果に関して特に有効に
作用する。Furthermore, the usage ratio of high melting point glass powder and low melting point glass powder (
When the ratio (by weight) is 1:1, both glasses work particularly effectively with respect to the above-mentioned effects in conjunction with the primary sintering of the phosphate at 400° C. and the secondary sintering at 800° C.
被覆物の密着性向上、塗膜間結合強度およびタール状物
質付着防止の付与材としての酸化イツトリウムおよび溶
融シリカは３０重量部を、酸化銅および酸化クロムは２
０重量部を超えるべきでない。これら各成分を所定の範
囲を超えて用いることも可能であるが、多量に用いるこ
とによる追加的効果が無いので更に多量に用いる意味が
ない。また酸化イットリウおよび溶融シリカが１５重量
部、酸化銅および酸化クロムが５重量部より少ない場合
には、被覆物の密着性並びに焼結性が低下し塗膜間内結
合力が弱く、気孔が多量に発生しタール状物質の付着防
止効果が得られず、タール状物質の付着溶融により塗膜
は脆くなる。30 parts by weight of yttrium oxide and fused silica, and 2 parts by weight of copper oxide and chromium oxide as agents for improving adhesion of coatings, bonding strength between coatings, and preventing adhesion of tar-like substances.
Should not exceed 0 parts by weight. Although it is possible to use each of these components in amounts exceeding the predetermined ranges, there is no additional effect by using a large amount, so there is no point in using a larger amount. If the amount of yttrium oxide and fused silica is less than 15 parts by weight, and the amount of copper oxide and chromium oxide is less than 5 parts by weight, the adhesion and sinterability of the coating will decrease, the bonding strength between the coatings will be weak, and there will be a large number of pores. The effect of preventing the adhesion of tar-like substances cannot be obtained, and the coating film becomes brittle as the tar-like substances adhere and melt.
（ｃ） 成分の断熱性付与材としてのチタン酸カリウム
繊維は、直径０．５〜２．００μ、長さ３０〜６０μの
トンネル構造を有する針状結晶を呈している断熱性およ
び耐熱性に冨むものである。この成分の使用量は成分ａ
）、ｂ）およびＣ）の合計の５〜２０重量２の範囲にあ
る必要がある。２０重量％より多い場合組成物を被覆物
とした時に塗膜表面の平滑性が失われ粗面となりタール
状物質が付着し易くなる。また５重量％より少ない場合
、断熱効果が得られない。(c) Potassium titanate fiber as a heat-insulating property imparting material exhibits needle-like crystals having a tunnel structure with a diameter of 0.5 to 2.00μ and a length of 30 to 60μ, and is rich in heat insulation and heat resistance. It is something that The amount of this component used is component a
), b) and C) should be in the range of 5 to 20 weight 2 in total. When the amount is more than 20% by weight, when the composition is used as a coating, the surface of the coating loses its smoothness and becomes rough, making it easy for tar-like substances to adhere. Moreover, if it is less than 5% by weight, no heat insulating effect can be obtained.
本発明の被覆組成物のコークス炉炉内壁並びに炉蓋内壁
への塗布量には特に臨界がないが、約１〜１．２ｋｇ／
ｒｒｒ程度が効果および経済の面から最適である。 本
発明の被覆組成物を基材上に塗布する際に追加的に約１
０〜１５重世％（組成物全体量を基準として）の水を該
組成物に混入すれば、塗装作業性が向上することが判っ
ている。Although there is no particular criticality to the amount of the coating composition of the present invention applied to the inner wall of the coke oven and the inner wall of the oven lid, it is approximately 1 to 1.2 kg/kg/day.
RRR or so is optimal from the viewpoint of effectiveness and economy. When applying the coating composition of the present invention onto a substrate, additionally about 1
It has been found that incorporating 0 to 15 weight percent (based on the total weight of the composition) of water into the composition improves the coating workability.
本発明の被覆組成物の基材への塗布は、通例に用いられ
る方法、吹きつけ塗装、刷毛塗り、浸漬法等によって行
うことができる。塗布前の処理として、異物の付着が認
められる場合は例えばワイヤーブラシまたはデスクサン
グーでそれを除去する必要がある。塗膜の焼結は例えば
自然乾燥後に、運転の際の炉内の熱によって直接的に行
うことができる。The coating composition of the present invention can be applied to the substrate by conventional methods such as spray coating, brush coating, dipping, and the like. As a treatment before application, if foreign matter is observed, it is necessary to remove it with a wire brush or desk cleaner, for example. The coating can be sintered, for example, after natural drying, directly by the heat in the furnace during operation.
次に下記実施例並びに比較例によって本発明を更に詳細
に説明する。Next, the present invention will be explained in more detail with reference to the following examples and comparative examples.
ス新１生り
以下の各成分：
炭化珪素２２重量部、窒化珪素５重量部、マイカ状酸化
アルミニウム１５重量部、酸化ジルコニウム３重量部、
マイカ粉５重量部、酸化硼素２重量部、燐酸塩１５重量
部、酸化イツトリウム８重量部、溶融シリカ４重量部、
低融点ガラス粉２重量部、高融点ガラス粉２重量部、酸
化クロム１重量部、酸化銅１重量部およびチタン酸カリ
ウム繊維１５重量部（以上の合計１００重量部）
を混合し、これに１０重量部の水を混入することによっ
て被覆組成物を得る。これをコークス炉の炉蓋にスプレ
ーにて１〜１．２に＋ｒ／ｎ？の量で塗布する。次に２
４時間自然乾燥させる。自然乾燥後に、この炉蓋をケー
シングにうよって固定する。The following ingredients: 22 parts by weight of silicon carbide, 5 parts by weight of silicon nitride, 15 parts by weight of mica-like aluminum oxide, 3 parts by weight of zirconium oxide,
5 parts by weight of mica powder, 2 parts by weight of boron oxide, 15 parts by weight of phosphate, 8 parts by weight of yttrium oxide, 4 parts by weight of fused silica,
2 parts by weight of low melting point glass powder, 2 parts by weight of high melting point glass powder, 1 part by weight of chromium oxide, 1 part by weight of copper oxide and 15 parts by weight of potassium titanate fibers (total of 100 parts by weight) were mixed, and 10 parts by weight of potassium titanate fibers were mixed. The coating composition is obtained by incorporating parts by weight of water. Spray this on the lid of the coke oven to 1-1.2 +r/n? Apply in the amount of Next 2
Let dry naturally for 4 hours. After air drying, the furnace lid is fixed to the casing.
炉蓋の内部温度を測定して被覆物の断熱効果を試験する
。この目的の為に、第１図に示すように、３８５ ｘ６
９９０ｘ炉内側３７５、炉外側４３６ＩＩＩＩＩの寸法
の台形の耐熱レンガ（１）の炉外側に面する該レンガの
縦方向においてその端部から３０８０１１１ｆｆｌ、横
方向においてその端部から２１８ｎ＋＋ａの場所に１７
０ｍｍの深さの穿孔を明け、ケーシング（２）にそのレ
ンガをセットしそして穿孔に熱電対（３）を埋設する。The internal temperature of the furnace cover is measured to test the insulation effect of the coating. For this purpose, a 385 x 6
17 at a location 3080111ffl from the end in the longitudinal direction and 218n++a from the end in the transverse direction of a trapezoidal heat-resistant brick (1) with dimensions of 990x inside the furnace 375 and outside the furnace 436III
A hole with a depth of 0 mm is made, the brick is set in the casing (2), and a thermocouple (3) is buried in the hole.
このようにセットされた熱電対によって炉蓋内部温度を
測定して断熱効果を知る。The thermocouple set in this way measures the temperature inside the furnace lid to determine the insulation effect.
また一定期間（第２表参照）使用したコークス炉炉蓋耐
火物（定形レンガ）を抜きとり粉砕し耐火物１００ｇ当
たりのタール状物質付着量を一ヵ月毎に測定する。In addition, the coke oven lid refractories (shaped bricks) that have been used for a certain period of time (see Table 2) are removed and crushed, and the amount of tar-like substances deposited per 100 g of the refractories is measured every month.
結果を第２表に示す。The results are shown in Table 2.
実施拠主二ｉ−
次の第１表に示す組成のセラミック被覆組成物を実施例
１における如く製造し、そして実施例１と同様に試験す
る。結果を第２表に示す。Example 2: Ceramic coating compositions having the compositions shown in Table 1 below are prepared as in Example 1 and tested as in Example 1. The results are shown in Table 2.
第１表
止較適上（特公昭５Ｂ−５２９５２に相応する）以下の
成分：
炭化珪素４５重量部、窒化珪素３重量部、リン酸アルミ
ニウム１２重量部、酸化クロム３重量部、炭化タンタル
５重量部、アルミニウム粉末６重量部、酸化アルミニウ
ム７重量部、酸化マグネシウム２重量部、酸化鉄４重量
、ガラス粉５重量部、酸化ジルコン６重量部および二酸
化珪素２重量部
から実施例１と同様にセラミック被覆組成物を製造し、
これについても実施例１と同様な試験を行う。結果を第
２表に示す。Table 1 Comparison (corresponding to Japanese Patent Publication No. 5B-52952) The following components: 45 parts by weight of silicon carbide, 3 parts by weight of silicon nitride, 12 parts by weight of aluminum phosphate, 3 parts by weight of chromium oxide, 5 parts by weight of tantalum carbide. Ceramic was prepared in the same manner as in Example 1 from 6 parts by weight of aluminum powder, 7 parts by weight of aluminum oxide, 2 parts by weight of magnesium oxide, 4 parts by weight of iron oxide, 5 parts by weight of glass powder, 6 parts by weight of zirconium oxide and 2 parts by weight of silicon dioxide. producing a coating composition;
In this case, the same test as in Example 1 is conducted. The results are shown in Table 2.
ル較皿ｌ
この比較例では被覆塗装を施さずに実施例１と同様に試
験を行う （ブランク試験）。結果を第２表に示す。Comparison Plate In this comparative example, a test was conducted in the same manner as in Example 1 without applying coating (blank test). The results are shown in Table 2.
第又表
炉内温度： 約１１５０℃
上記第２表に示すように、本発明の被覆組成物の場合に
は３６０日経過後であっても比較例２の被覆物なしの場
合との比較から１８〜９０℃の炉蓋内部温度の断熱効果
が達成され、またタール状物質付着量についても約７０
〜７８％抑制されていることが判る。Temperature inside the furnace: approx. 1150°C As shown in Table 2 above, in the case of the coating composition of the present invention, even after 360 days, the temperature was 18 A heat insulation effect of ~90°C internal temperature of the furnace lid was achieved, and the amount of tar-like substances deposited was also reduced to approximately 70°C.
It can be seen that it is suppressed by ~78%.
更に、比較例１の被覆組成物の場合の結果と比較くして
みると、本発明の被覆組成物が優れた断熱効果を示し且
つタール状物質の付着も著しく抑制されるでいることが
判る。Further, when compared with the results obtained with the coating composition of Comparative Example 1, it can be seen that the coating composition of the present invention exhibits an excellent heat insulating effect and also significantly suppresses the adhesion of tar-like substances.
第１図は、本発明の被覆組成物の断熱効果を測定する為
に炉蓋の耐火レンガに熱電対をセントした状態を示すレ
ンガの切断面図である。図中の記号は以下の意味を有す
る。
（１）・・・レンガ
（２）・・・ケーシング
（３）・・・熱電対FIG. 1 is a cross-sectional view of a refractory brick of a furnace lid in which a thermocouple is inserted in order to measure the heat insulating effect of the coating composition of the present invention. The symbols in the figure have the following meanings. (1)...Brick (2)...Casing (3)...Thermocouple
Claims (1)
、マイカ状酸化アルミニウム２０〜４０重量部、酸化ジ
ルコニウム１０〜２５重量部、マイカ粉５〜１５重量部
および酸化硼素５〜１５重量部 より成る耐熱性およびタール状物質浸透防止性の付与材
、 （ｂ）１５〜４０重量％の、 燐酸塩４０〜７０重量部、酸化イットリウム１５〜３０
重量部、溶融シリカ１５〜３０重量部、高融点ガラス粉
５〜２０重量部、低融点ガラス粉５〜２０重量部、酸化
銅５〜２０重量部および酸化クロム５〜２０重量部 より成る密着性、塗膜間結合強度およびタール状物質付
着防止性の付与材並びにバインダーおよび （ｃ）５〜２０重量％の断熱性付与材としてのチタン酸
カリウム繊維 より成りそしてその成分ａ）、ｂ）およびｃ）の合計が
１００重量％であることを特徴とする、コークス炉炉内
壁並びに炉蓋保護用の耐熱性および断熱性を有するター
ル状物質付着防止性セラミック被覆組成物。(1) (a) 20 to 50 parts by weight, 30 to 50 parts by weight of silicon carbide, 20 to 40 parts by weight of silicon nitride, 20 to 40 parts by weight of mica-like aluminum oxide, 10 to 25 parts by weight of zirconium oxide, 5 parts by weight of mica powder. (b) 15-40% by weight of 40-70 parts by weight of phosphate, 15-30% of yttrium oxide;
Parts by weight, 15 to 30 parts by weight of fused silica, 5 to 20 parts by weight of high melting point glass powder, 5 to 20 parts by weight of low melting point glass powder, 5 to 20 parts by weight of copper oxide, and 5 to 20 parts by weight of chromium oxide. , an agent for imparting inter-coating bond strength and tar-like substance adhesion prevention properties, a binder, and (c) 5 to 20% by weight of potassium titanate fibers as an agent for imparting heat insulation properties, and its components a), b), and c. ) is 100% by weight in total, a ceramic coating composition having heat resistance and heat insulation properties and preventing adhesion of tar-like substances for protecting the inner wall of a coke oven and the oven lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61039170A JPS62197371A (en) | 1986-02-26 | 1986-02-26 | Heat-resistant and heat-insulative tar-like substance adhesion preventive heat-insulative ceramic coating composition for protecting coke oven inside wall and oven lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61039170A JPS62197371A (en) | 1986-02-26 | 1986-02-26 | Heat-resistant and heat-insulative tar-like substance adhesion preventive heat-insulative ceramic coating composition for protecting coke oven inside wall and oven lid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62197371A true JPS62197371A (en) | 1987-09-01 |
| JPH0321508B2 JPH0321508B2 (en) | 1991-03-22 |
Family
ID=12545643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61039170A Granted JPS62197371A (en) | 1986-02-26 | 1986-02-26 | Heat-resistant and heat-insulative tar-like substance adhesion preventive heat-insulative ceramic coating composition for protecting coke oven inside wall and oven lid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62197371A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02102181A (en) * | 1988-10-08 | 1990-04-13 | Kyushu Refract Co Ltd | Coating material of carbon-containing brick |
| JPH0287045U (en) * | 1988-12-21 | 1990-07-10 | ||
| JP2748328B2 (en) * | 1994-05-17 | 1998-05-06 | 朝日化学工業株式会社 | Glaze for hot application to coke oven refractories and method of forming glaze layer |
| US6096432A (en) * | 1994-05-17 | 2000-08-01 | Asahi Chemical Company, Limited | Glazing layer-forming composition for hot-coating of furnace refractories and method of forming glazing layer |
| JP2007112690A (en) * | 2005-10-17 | 2007-05-10 | Yuta Saito | Glaze |
| EP3297972A4 (en) * | 2016-07-14 | 2019-01-02 | Resco Products, Inc. | Jamb spray mixes including fused silica and methods of utilizing the mixes |
| CN111718143A (en) * | 2020-06-10 | 2020-09-29 | 西安建筑科技大学 | High-wear-resistance anti-skid pavement aggregate, pavement and preparation method |
| US11584691B2 (en) | 2016-07-14 | 2023-02-21 | Resco Products, Inc. | Jamb spray mixes including fused silica and methods of utilizing the mixes |
-
1986
- 1986-02-26 JP JP61039170A patent/JPS62197371A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02102181A (en) * | 1988-10-08 | 1990-04-13 | Kyushu Refract Co Ltd | Coating material of carbon-containing brick |
| JPH0287045U (en) * | 1988-12-21 | 1990-07-10 | ||
| JP2748328B2 (en) * | 1994-05-17 | 1998-05-06 | 朝日化学工業株式会社 | Glaze for hot application to coke oven refractories and method of forming glaze layer |
| US6096432A (en) * | 1994-05-17 | 2000-08-01 | Asahi Chemical Company, Limited | Glazing layer-forming composition for hot-coating of furnace refractories and method of forming glazing layer |
| JP2007112690A (en) * | 2005-10-17 | 2007-05-10 | Yuta Saito | Glaze |
| EP3297972A4 (en) * | 2016-07-14 | 2019-01-02 | Resco Products, Inc. | Jamb spray mixes including fused silica and methods of utilizing the mixes |
| US11584691B2 (en) | 2016-07-14 | 2023-02-21 | Resco Products, Inc. | Jamb spray mixes including fused silica and methods of utilizing the mixes |
| CN111718143A (en) * | 2020-06-10 | 2020-09-29 | 西安建筑科技大学 | High-wear-resistance anti-skid pavement aggregate, pavement and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0321508B2 (en) | 1991-03-22 |
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