JP2851460B2 - Manufacturing method of artificial lightweight aggregate - Google Patents
Manufacturing method of artificial lightweight aggregateInfo
- Publication number
- JP2851460B2 JP2851460B2 JP22706491A JP22706491A JP2851460B2 JP 2851460 B2 JP2851460 B2 JP 2851460B2 JP 22706491 A JP22706491 A JP 22706491A JP 22706491 A JP22706491 A JP 22706491A JP 2851460 B2 JP2851460 B2 JP 2851460B2
- Authority
- JP
- Japan
- Prior art keywords
- ash
- coal
- weight
- heavy oil
- coal ash
- 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
Links
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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Description
【０００１】[0001]
【産業上の利用分野】本発明は、軽量コンクリートの骨
材に適用される人工軽量骨材の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an artificial lightweight aggregate applied to an aggregate of lightweight concrete.
【０００２】[0002]
【従来の技術】重油専焼ボイラから排出される重油灰
は、加湿された後、焼成炉に投入して焼成し、灰中に含
有されるバナジウムを採取し、焼却灰は埋立地に搬送し
廃棄されている。2. Description of the Related Art Heavy oil ash discharged from a heavy oil boiler is humidified, then put into a firing furnace and fired, vanadium contained in the ash is collected, and the incinerated ash is transported to a landfill and disposed of. Have been.
【０００３】また、石炭焚ボイラから排出される石炭灰
は、人工軽量骨材として用いられることがあるが、この
ためには、灰中の未燃炭素分は４重量％以上含有しない
と自燃不充分となり、焼結不完全な骨材製品となってい
る。[0003] In addition, coal ash discharged from a coal-fired boiler is sometimes used as artificial lightweight aggregate. For this purpose, if the unburned carbon content in the ash is not more than 4% by weight, self-burning is not possible. Sufficient and incompletely sintered aggregate products.
【０００４】[0004]
【発明が解決しようとする課題】石炭焚ボイラから排出
される石炭灰は、ボイラにおける燃焼効率が向上したた
めに得られる石炭灰の未燃炭素分が約 3. 0 重量％であ
り、人工軽量骨材とする場合には、必要炭素分（４重量
％以上）を確保するために添加カーボン材を添加する必
要がある。The coal ash discharged from the coal-fired boiler has an unburned carbon content of about 3.0% by weight in the coal ash obtained due to the improved combustion efficiency in the boiler. When the material is used, it is necessary to add an additional carbon material in order to secure a necessary carbon content (4% by weight or more).
【０００５】従来の添加カーボン材には微粉炭が使用さ
れていて、微粉炭としては石炭灰を微粉砕し、且つ分級
したものを使用している。[0005] Pulverized coal is used as a conventional additive carbon material, and coal ash is finely pulverized and classified as pulverized coal.
【０００６】一方、重油灰は、前記のように埋立地に有
償にて廃棄されており、かつ埋立地も制約されつつあ
る。[0006] On the other hand, heavy oil ash is disposed of in landfills for a fee as described above, and landfills are also being restricted.
【０００７】本発明は、以上のように石炭灰と廃棄され
ている重油灰を有効に利用し、人工軽量骨材を製造する
方法を提供しようとするものである。An object of the present invention is to provide a method for producing an artificial lightweight aggregate by effectively utilizing coal ash and heavy oil ash discarded as described above.
【０００８】[0008]
【課題を解決するための手段】本発明の人工軽量骨材の
製造方法は、未燃炭素分の少ない石炭灰を造粒，焼結し
て人工軽量骨材を製造するに際し、石炭灰に重油灰を混
合して造粒，焼結することを特徴とする。The method for producing an artificial lightweight aggregate according to the present invention is a method for producing an artificial lightweight aggregate by granulating and sintering coal ash containing a small amount of unburned carbon. It is characterized by mixing ash, granulating and sintering.
【０００９】[0009]
【作用】石炭灰から人工軽量骨材を製造するに当って、
石炭灰中に添加される従来の微粉炭は固形であるため、
やや燃焼性が悪く、製品品質検査において強熱減量がＪ
ＩＳ規格（ 1 .０％以下）を越えることがある。[Function] In producing artificial lightweight aggregate from coal ash,
Conventional pulverized coal added to coal ash is solid,
Slightly poor flammability, loss of ignition in product quality inspection is J
May exceed IS standard (1.0% or less).
【００１０】本発明で石炭灰に混合される重油灰は、未
燃炭素をかなり含有しており、かつ、いわゆる灰である
ため、かさ比重が小さく、かつ燃焼性も良い。従って、
未燃炭素分の少い石炭灰に重油灰を混合して造粒するこ
とによって、十分な焼結が行なわれる。The heavy oil ash mixed with the coal ash in the present invention contains a considerable amount of unburned carbon and is a so-called ash, and therefore has a low bulk specific gravity and good flammability. Therefore,
Sufficient sintering is performed by mixing and aggregating heavy oil ash with coal ash having a low unburned carbon content.
【００１１】また、石炭灰へ重油灰が混合されているた
めに、重油灰の分布密度が均一となり、かつ、重油灰か
さ比重が小さいことと相まって、製品品質の強熱減量も
やや低値，絶乾比重も低値となる。In addition, since heavy oil ash is mixed with coal ash, the distribution density of heavy oil ash is uniform, and the specific gravity of heavy oil ash is low. The absolute dry gravity also becomes low.
【００１２】[0012]
【実施例】以下に本発明の実施例を説明する。Embodiments of the present invention will be described below.
【００１３】本実施例に用いられる装置を図１によって
説明する。１，２，３，４はそれぞれ石炭灰，石炭灰粗
灰，重油灰及び粘土を収容するホッパで，同ホッパ１，
２，３，４から石炭灰，石炭灰粗灰，重油灰及び粘土が
混練機６に供給され、水５を散水して混練された上，パ
ン型造粒機７において造粒が行なわれてペレットとな
り、生ペレツト投入用ホッパ８に収容される。８′は焼
成製品（焼成ペレツト）を収容した床敷ペレツト投入用
ホッパで、同ホッパ８′と前記生ペレツト投入用ホッパ
８から、ペレツトが大気と隔絶された焼成炉９内へ投入
される。９′は焼成炉９のグレートであり、１１はグレ
ート９′の下方に設けられた吸引ボックス１０からの吸
引を行なうブロワである。１３は焼成炉９で焼成された
ペレツトを製品回収ホッパ１４へ送るベルトコンベヤで
ある。前記ブロワ１１で吸引された焼成炉９内の雰囲気
は焼成炉９内へ循環されるようになっている。また、１
２は焼成炉９の着火装置，１３は焼成炉９の仕切板であ
る。An apparatus used in this embodiment will be described with reference to FIG. 1, 2, 3, and 4 are hoppers for storing coal ash, coarse coal ash, heavy oil ash, and clay, respectively.
Coal ash, coal ash coarse ash, heavy oil ash, and clay are supplied to the kneader 6 from 2, 3, and 4, water 5 is sprinkled and kneaded, and granulation is performed in the pan-type granulator 7. The pellets are stored in the hopper 8 for feeding raw pellets. Numeral 8 'denotes a hopper for putting a bedding pellet in which a fired product (fired pellet) is stored. Reference numeral 9 'denotes a great of the firing furnace 9, and reference numeral 11 denotes a blower for performing suction from a suction box 10 provided below the great 9'. A belt conveyor 13 sends the pellets fired in the firing furnace 9 to a product recovery hopper 14. The atmosphere in the firing furnace 9 sucked by the blower 11 is circulated into the firing furnace 9. Also, 1
Reference numeral 2 denotes an ignition device of the firing furnace 9, and reference numeral 13 denotes a partition plate of the firing furnace 9.
【００１４】前記図１に示される装置を用い、下記の成
分組成及び平均粒度を有する石炭灰，石炭灰粗灰，重油
灰及び比較例として重油灰に代えて微粉炭を使用した。Using the apparatus shown in FIG. 1, coal ash, coal ash coarse ash and heavy oil ash having the following component composition and average particle size were used, and pulverized coal was used instead of heavy oil ash as a comparative example.
【００１５】〔石炭灰の成分組成（重量％）〕 SiO2：60.3％， Al2O3：23.1％， CaO：3.93％，
Fe2O3：3.72％， K2O：1.48％， MgO：1.19％， TiO2：1.17％，
MnO：0.02％， Na2O：1.54％， SO3：0.28％， Ig.Loss ( 未燃炭
素）：2.87％， その他：0.4 ％。[Component composition of coal ash (% by weight)] SiO 2 : 60.3%, Al 2 O 3 : 23.1%, CaO: 3.93%,
Fe 2 O 3 : 3.72%, K 2 O: 1.48%, MgO: 1.19%, TiO 2 : 1.17%,
MnO: 0.02%, Na 2 O : 1.54%, SO 3: 0.28%, Ig.Loss ( unburned carbon): 2.87%, others: 0.4%.
【００１６】（石炭灰の平均粒度） ２９．0 μｍ 〔石炭灰粗灰の成分組成（重量％）〕 SiO2：61.3％， Al2O3：21.5％， CaO：4.44％，
Fe2O3：4.26％， K2O：1.35％， MgO：1.08％， TiO2：1.05％，
MnO：0.03％， Na2O：1.45％， SO3：0.23％， Ig.Los（未燃炭
素）：3.01％， その他：0.3 ％。(Average particle size of coal ash) 29.0 μm [Ingredient composition of coal ash crude ash (% by weight)] SiO 2 : 61.3%, Al 2 O 3 : 21.5%, CaO: 4.44%,
Fe 2 O 3 : 4.26%, K 2 O: 1.35%, MgO: 1.08%, TiO 2 : 1.05%,
MnO: 0.03%, Na 2 O : 1.45%, SO 3: 0.23%, Ig.Los ( unburned carbon): 3.01%, others: 0.3%.
【００１７】（石炭灰粗灰の平均粒度） ６２．0 μｍ 〔重油灰の分析（重量％）〕 固定炭素：70.1％， 灰：22.4％， 水分：1.
38％。(Average particle size of coal ash coarse ash) 62.0 μm [Analysis of heavy oil ash (% by weight)] Fixed carbon: 70.1%, Ash: 22.4%, Moisture: 1.
38%.
【００１８】（重油灰の平均粒度） ２７．1 μｍ 〔微粉炭の分析（重量％）〕 揮発分：10.68 ％， 固定炭素：54.95 ％， 灰：31.7
1 ％， 水分：2.66％。 （微粉炭の平均粒度） ２０．0 μｍ(Average particle size of heavy oil ash) 27.1 μm [Analysis of pulverized coal (% by weight)] Volatile content: 10.68%, fixed carbon: 54.95%, ash: 31.7
1%, moisture: 2.66%. (Average particle size of pulverized coal) 20.0 μm
【００１９】実施例１ 本実施例１においては、石炭灰，石炭灰粗灰，重油灰及
び粘土を用い、その原料配合は、石炭灰６８．0 重量
％，石炭灰粗灰２８．0 重量％，重油灰２．0 重量％及
び粘土２．0 重量％とし、水５の１４重量％を加えて混
練機６で混練した後、パン型造粒機７で注水しながら粒
径５〜２０mmφの生ペレツト（含水率２０％）を造粒し
た。なお、比較例では、微粉炭を重油灰に代え、石炭
灰，石炭灰粗灰及び粘土は同一原料配合とし、微粉炭の
添加量も２．0 重量％とし、同一要領で生ペレツトを造
粒した。Example 1 In Example 1, coal ash, coal ash coarse ash, heavy oil ash and clay were used, and the raw materials were 68.0% by weight of coal ash and 28.0% by weight of coarse ash of coal ash. , 2.0% by weight of heavy oil ash and 2.0% by weight of clay, 14% by weight of water 5 was added and kneaded by a kneading machine 6. Raw pellets (water content 20%) were granulated. In the comparative example, pulverized coal was replaced with heavy oil ash, coal ash, coal ash coarse ash, and clay were blended in the same raw material, the amount of pulverized coal added was 2.0% by weight, and raw pellets were granulated in the same manner. did.
【００２０】得られた生ペレツトを生ペレツト投入用ホ
ッパ８から大気と隔絶された焼成炉９へ投入し、同焼成
炉９において焼結させた。The obtained raw pellets were put into a firing furnace 9 isolated from the atmosphere from a raw pellet input hopper 8 and sintered in the firing furnace 9.
【００２１】焼結に当っては、グレート９′上に床敷ペ
レツト投入用ホッパ８′から焼結製品を投入して３０mm
の厚さで敷きつめて床敷とし、その上へ前記生ペレツト
を装入した。そしてグレート９′の下方の吸引ボックス
１０から３０mm H2Oの圧力で吸引しつつ３００℃の熱風
で５分間乾燥した後、生ペレツト表層を着火装置１２
（ＬＰＧバーナ）で着火（着火温度 1150 ℃）させ、焼
成炉９は焼成入口ガス量1400 Nm3/h，焼成入口Ｏ2 濃度
１３％に制御して約１５分間焼結させた。In sintering, a sintered product is put on the great pallet 9 'from the hopper 8' for feeding a floor bedding to a great 9 '
To a floor, and the raw pellets were placed thereon. After drying with hot air of 300 ° C. for 5 minutes while suctioning from the suction box 10 below the great 9 ′ at a pressure of 30 mm H 2 O, the surface of the raw pellet is ignited by the ignition device 12.
(LPG burner) to ignite (ignition temperature 1150 ° C.), and the sintering furnace 9 was sintered for about 15 minutes while controlling the sintering inlet gas amount to 1400 Nm 3 / h and the sintering inlet O 2 concentration to 13%.
【００２２】得られた焼結製品の物性を表１に示す。Table 1 shows the physical properties of the obtained sintered product.
【００２３】[0023]
【表１】 [Table 1]
【００２４】この結果、本実施例の重油灰添加のもの
は、比較例の微粉炭添加のものに比べて製品品質がやや
向上することを確認した。As a result, it was confirmed that the product quality of the fuel oil added with heavy oil ash of the present example was slightly improved as compared with that of the comparative example added with pulverized coal.
【００２５】実施例２ 本実施例における原料配合は石炭灰６３．0 重量％，石
炭灰粗灰２８．0 重量％，重油灰７．0 重量％，及び粘
土２．0 重量％とし、また比較例は同上原料灰（石炭
灰，石炭灰粗灰及び粘土を配合したもの）に微粉炭７．
0 重量％添加したものとし、これらを実施例１とほぼ同
様に焼成した。本実施例と比較例では原料灰の未燃炭素
分は７．6 重量％となるため、焼成条件を次のように変
更した。焼成入口ガス量は1000 Nm3/h, 焼成入口Ｏ2 濃
度１０％とし、着火温度は1050℃とした。Example 2 In this example, the raw materials were 63.0% by weight of coal ash, 28.0% by weight of crude coal ash, 7.0% by weight of heavy oil ash, and 2.0% by weight of clay. Example is the same as above for raw ash (combined coal ash, coal ash coarse ash and clay) and pulverized coal.
These were baked in substantially the same manner as in Example 1. In this example and the comparative example, the unburned carbon content of the raw material ash was 7.6% by weight, so the firing conditions were changed as follows. The firing inlet gas amount was 1000 Nm 3 / h, the firing inlet O 2 concentration was 10%, and the ignition temperature was 1050 ° C.
【００２６】得られた焼成製品の物性を表２に示す。Table 2 shows the physical properties of the obtained baked product.
【００２７】[0027]
【表２】 [Table 2]
【００２８】この結果、本実施例の重油灰添加のものも
製品品質がやや向上することを確認した。As a result, it was confirmed that the product quality of the fuel oil added with heavy oil ash of this embodiment was slightly improved.
【００２９】実施例３ 本実施例における原料配合は石炭灰６０．0 重量％，石
炭灰粗灰２８．0 重量％，重油灰１０．0 重量％，及び
粘土２．0 重量％とし、また比較例は同上原料灰（石炭
灰，石炭粗灰及び粘土を配合したもの）に微粉炭１０．
0 重量％添加したものとし、これらを実施例１とほぼ同
様に焼成した。本実施例と比較例では、原料灰の未燃炭
素分が９．6 重量％となるが、実施例２と同一焼成条件
とした。Example 3 The raw material mix in this example was 60.0% by weight of coal ash, 28.0% by weight of crude coal ash, 10.0% by weight of heavy oil ash, and 2.0% by weight of clay. For example, pulverized coal is added to raw ash (combined coal ash, coal coarse ash and clay).
These were baked in substantially the same manner as in Example 1. In this example and the comparative example, the unburned carbon content of the raw material ash was 9.6% by weight, but the same firing conditions as in Example 2 were used.
【００３０】得られた焼結製品の物性を表３に示す。Table 3 shows the physical properties of the obtained sintered product.
【００３１】[0031]
【表３】 [Table 3]
【００３２】この結果、本実施例の重油灰添加のものも
製品品質がやや向上することを確認した。As a result, it was confirmed that the product quality of the fuel oil added with heavy oil ash of this embodiment was slightly improved.
【００３３】実施例４ 本実施例における原料配合は石炭灰５５．0 重量％，石
炭灰粗灰２８．0 重量％，重油灰１５．0 重量％，及び
粘土２．0 重量％とし、また比較例は同上原料灰（石炭
灰，石炭灰粗灰及び粘土を配合したもの）に微粉炭１
５．0 重量％添加したものとし、これらを実施例１とほ
ぼ同様に焼成した。本実施例と比較例では原料灰の未燃
炭素分が１３．0 重量％となるため、焼成条件として焼
成入口ガス量９００Nm3/h ，焼成入口Ｏ2 濃度８％，着
火温度1000℃で焼成した。その結果、焼結製品が融着し
製品が得られなかった。Example 4 The raw material composition in this example was 55.0% by weight of coal ash, 28.0% by weight of crude coal ash, 15.0% by weight of heavy oil ash, and 2.0% by weight of clay. Example is the same as above for raw ash (combined coal ash, coal ash coarse ash and clay) and pulverized coal 1
5.0% by weight was added, and these were fired in substantially the same manner as in Example 1. Since the unburned carbon content of the raw material ash is 13.0% by weight in the present example and the comparative example, the firing conditions were as follows: firing temperature: 900 Nm 3 / h, firing inlet O 2 concentration: 8%, firing temperature: 1000 ° C. did. As a result, the sintered product was fused and no product was obtained.
【００３４】以上の結果、重油灰の適正添加量は１０重
量％以下であることを把握した。As a result, it was found that the proper amount of heavy oil ash was 10% by weight or less.
【００３５】[0035]
【発明の効果】以上説明したように、本発明は、石炭灰
に重油灰を添加しているために、 (１) 製品の品質は微粉炭を使用したものと同等，そ
れ以上のものが得られる。As described above, according to the present invention, since heavy oil ash is added to coal ash, (1) the quality of the product is equal to or higher than that using pulverized coal. Can be
【００３６】(２) 産業廃棄物として処分されている
重油灰を有効利用するために非常に安価である。 などの効果を奏することができる。(2) It is very inexpensive in order to effectively use heavy oil ash disposed as industrial waste. And the like.
【図１】本発明の実施例に使用される装置の断面図であ
る。FIG. 1 is a sectional view of an apparatus used in an embodiment of the present invention.
１，２，３，４ ホッパ ５ 水 ６ 混練機 ７ パン型造粒機 ８ 生ペレツト投入用ホッパ ８′ 床敷ペレツト投入用ホッパ ９ 焼成炉 ９′ グレート １０ 吸引ボックス １１ ブロワ １２ 着火装置 １３ 仕切板 １４ ベルトコンベヤ １５ 製品回収ホッパ 1, 2, 3, 4 Hopper 5 Water 6 Kneader 7 Bread granulator 8 Hopper for charging raw pellets 8 'Hopper for loading pellets 9 Firing furnace 9' Great 10 Suction box 11 Blower 12 Ignition device 13 Partition plate 14 Belt conveyor 15 Product recovery hopper
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤井 嘉則 広島市中区小町４番33号 中国電力株式 会社内 (72)発明者 浴 寿美 広島市中区小町４番33号 中国電力株式 会社内 (72)発明者 生田 耕治 広島市中区小町４番33号 中国電力株式 会社内 (72)発明者 村上 英之 広島市中区小町４番33号 中国電力株式 会社内 (72)発明者 世良 裕明 広島市中区小町４番33号 中国電力株式 会社内 (72)発明者 貝 敏雄 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島研究所内 (72)発明者 藤原 邦久 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島研究所内 (72)発明者 蛇蝮 良峰 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島研究所内 (72)発明者 田中 荘二 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島製作所内 (72)発明者 世良 俊邦 東京都千代田区丸の内二丁目５番１号 三菱重工業株式会社内 (58)調査した分野(Int.Cl.6，ＤＢ名) C04B 14/02 C04B 18/08 C04B 18/10──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshinori Fujii 4-33, Komachi, Naka-ku, Hiroshima-shi Inside Chugoku Electric Power Company (72) Inventor Sumi Yu, 4-33, Komachi, Naka-ku, Hiroshima City Inside Chugoku Electric Power Company ( 72) Inventor Koji Ikuta 4-33, Komachi, Naka-ku, Hiroshima City Inside Chugoku Electric Power Company (72) Inventor Hideyuki Murakami 4-33, Komachi, Naka-ku, Hiroshima City Inside Chugoku Electric Power Company (72) Inventor Hiroaki Sera Hiroshima 4-33, Komachi, Naka-ku, Chugoku Electric Power Company (72) Inventor Toshio Kai, 6--22 Kannon Shinmachi, Nishi-ku, Hiroshima City Inside Hiroshima Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Kunihisa Fujiwara, Kannon Shinmachi, Nishi-ku, Hiroshima City Hiroshima Research Institute, Mitsubishi Heavy Industries Co., Ltd. (Chapter 72) (72) Inventor Shoji Tanaka 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima Sanritsu Heavy Industries, Ltd.Hiroshima Works (72) Inventor Toshikuni Sera 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Heavy Industries, Ltd. (58) Surveyed fields (Int.Cl. 6 , DB name) C04B 14/02 C04B 18/08 C04B 18/10
Claims (1)
して人工軽量骨材を製造するに際し、石炭灰に重油灰を
混合して造粒，焼結することを特徴とする人工軽量骨材
の製造方法。1. A method for producing artificial lightweight aggregates by granulating and sintering coal ash with a small amount of unburned carbon, wherein coal ash is mixed with heavy oil ash and granulated and sintered. Manufacturing method of artificial lightweight aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22706491A JP2851460B2 (en) | 1991-09-06 | 1991-09-06 | Manufacturing method of artificial lightweight aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22706491A JP2851460B2 (en) | 1991-09-06 | 1991-09-06 | Manufacturing method of artificial lightweight aggregate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH069251A JPH069251A (en) | 1994-01-18 |
| JP2851460B2 true JP2851460B2 (en) | 1999-01-27 |
Family
ID=16854968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22706491A Expired - Fee Related JP2851460B2 (en) | 1991-09-06 | 1991-09-06 | Manufacturing method of artificial lightweight aggregate |
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| Country | Link |
|---|---|
| JP (1) | JP2851460B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7462310B2 (en) | 2003-12-11 | 2008-12-09 | Ohonokaihatsu Co., Ltd. | Porous landscape pebble and method of manufacturing the same |
| JP4871618B2 (en) * | 2006-03-14 | 2012-02-08 | 株式会社日立ハイテクノロジーズ | Quality control system |
| KR101250941B1 (en) * | 2010-05-12 | 2013-04-04 | 주식회사 엔바이온 | The fabrication of deodorizing panel using fly-ash from heavy oil for removal of TVOC and Formaldehyde |
| US9796624B1 (en) | 2017-01-31 | 2017-10-24 | Saudi Arabian Oil Company | Foam concrete with oil ash |
-
1991
- 1991-09-06 JP JP22706491A patent/JP2851460B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH069251A (en) | 1994-01-18 |
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