JPH0733279B2 - Manufacturing method of molded products using slag - Google Patents
Manufacturing method of molded products using slagInfo
- Publication number
- JPH0733279B2 JPH0733279B2 JP62056102A JP5610287A JPH0733279B2 JP H0733279 B2 JPH0733279 B2 JP H0733279B2 JP 62056102 A JP62056102 A JP 62056102A JP 5610287 A JP5610287 A JP 5610287A JP H0733279 B2 JPH0733279 B2 JP H0733279B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- particle size
- clay
- slurry
- mold
- 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 - Lifetime
Links
- 239000002893 slag Substances 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000002245 particle Substances 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002440 industrial waste Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000007885 magnetic separation Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 description 16
- 238000010304 firing Methods 0.000 description 14
- 239000002002 slurry Substances 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
【発明の詳細な説明】 技術分野 本発明は、産業廃棄物を溶融処理した粉粒状スラグを用
いて、硯あるいは風鈴などの成型品を製造する方法に関
する。Description: TECHNICAL FIELD The present invention relates to a method for producing a molded product such as a stone or a wind chime using a powdery granular slag obtained by melting industrial waste.
背景技術 従来から、産業廃棄物が大量に生成されており、この産
業廃棄物を利用する用途の開発が所望されている。BACKGROUND ART A large amount of industrial waste has been conventionally produced, and development of applications utilizing this industrial waste is desired.
発明が解決すべき問題点 本発明の目的は、産業廃棄物を溶融処理したスラグを用
いて希望する耐摩耗性および耐水性を有する成型品の製
造方法を提供することである。Problems to be Solved by the Invention An object of the present invention is to provide a method for producing a molded product having desired wear resistance and water resistance using slag obtained by subjecting industrial waste to melt processing.
問題点を解決するための手段 本発明は、産業廃棄物を溶融処理した粉粒状スラグを磁
選して得られた粒径３μｍ以下のスラグと、 ３μｍ以下の粒径を有する粘土とを混合し、 前記スラグと前記粘土とに水を加えて粘度を約250〜350
poiseになるようにして鋳込み成型することを特徴とす
るスラグを用いた成型品の製造方法である。Means for Solving the Problems The present invention mixes slag having a particle size of 3 μm or less obtained by magnetically separating powdery slag obtained by melting industrial waste, and clay having a particle size of 3 μm or less, Add water to the slag and the clay to increase the viscosity to about 250-350.
It is a method of manufacturing a molded product using slag, which is characterized in that it is cast into a poise.
作用 本発明に従えば、粉粒状スラグと粘土に水を加えて成型
して焼成する。スラグの粒径を３μｍ以下とし、また、
粘土の粒径を３μｍ以下とすることによつて、成型品の
表面が平滑である耐水性、耐摩耗性に優れた製品、たと
えば硯ならびに風鈴などを製造することができる。また
本発明では産業廃棄物を溶融処理した粉粒状スラグと粘
土と水とを混合したスラリは、その粘度が250〜350pois
eとなるように調整されている。たとえば、前記スラリ
が350poise以上であると、鋳込み成型時にそのスラリが
鋳型の隅部まで充分に鋳込めず、鋳型の内面形状に正確
に一致した成型品を製造することが出来ない。また、前
記スラリが250poise未満であると、鋳込まれたスラリが
鋳型に粘着してしまい、希望する鋳込み成型品を得るこ
とができない。Action According to the present invention, water is added to the powdery slag and clay, and the mixture is molded and fired. The particle size of the slag is 3 μm or less, and
By setting the particle size of the clay to 3 μm or less, it is possible to manufacture a molded product having a smooth surface and excellent in water resistance and abrasion resistance, for example, slag and wind chimes. Further, in the present invention, a slurry obtained by mixing industrial waste with a powdery granular slag, clay, and water has a viscosity of 250 to 350 pois.
It is adjusted to be e. For example, if the slurry is 350 poise or more, the slurry cannot be sufficiently cast into the corners of the mold during casting, and a molded product that exactly matches the inner surface shape of the mold cannot be manufactured. If the slurry is less than 250 poise, the cast slurry adheres to the mold, making it impossible to obtain the desired cast product.
実施例 第１図は本発明の一実施例を説明するための工程を示す
図であり、第２図はこれによつて製造された硯１を示す
図である。産業廃棄物は溶融処理炉において溶融され、
そこから得られる溶融スラグは第１図の工程n1において
水冷され、こうして粉粒状スラグが得られる。産業廃棄
物というのは、下水汚泥およびその焼却灰、都市ごみお
よびその焼却灰、石炭灰、石くずおよびアルミナなどの
不燃性物ならびに建築廃材などが挙げられる。その一例
として下水汚泥溶融スラグの灰分組成を第１表に示す。Example FIG. 1 is a diagram showing a process for explaining an example of the present invention, and FIG. 2 is a diagram showing a sill 1 manufactured by the process. Industrial waste is melted in a melting furnace,
The molten slag obtained therefrom is water-cooled in step n1 in FIG. 1 to obtain powdery slag. Industrial wastes include sewage sludge and its incinerated ash, municipal solid waste and its incinerated ash, coal ash, non-combustible materials such as stone trash and alumina, and construction waste materials. As an example, Table 1 shows the ash composition of the sewage sludge molten slag.
この水冷スラグ中には、約20％の水分が含まれている。 This water-cooled slag contains about 20% water.
そこで第１図の工程n2において、スラグを平床容器に入
れてドライヤーで100℃、８時間乾燥し、水分を零とす
る。Therefore, in step n2 of FIG. 1, the slag is placed in a flat-bed container and dried with a dryer at 100 ° C. for 8 hours to make the water content zero.
工程n3では、スラグを磁選して脱鉄する。すなわち強磁
性材料である鉄分などを除去する。このため水分を含ま
ない粉粒状スラグ内に磁石を設け、磁石に付着する鉄分
などを除去することによつて、磁選を行なうことができ
る。In step n3, the slag is magnetically selected to remove iron. That is, iron, which is a ferromagnetic material, is removed. For this reason, magnetic separation can be performed by providing a magnet in the granular slag that does not contain water and removing iron and the like adhering to the magnet.
その後、工程n4において、スラグを粉砕して第３図のラ
イン１で示される粒度分布を有する粉体を得る。この
ような粒径を有する粉体をふるい分けして、粒径３μｍ
未満の微粉を本実施例では使用する。このような第３図
に示す粒度分布を有する粉体を生成するには、たとえば
10mmφのジルコニアボールを用い、粉砕すべきスラグと
前記ボールとを内径230mm、長さ230mmの胴体を有する鉄
ポットミルで粉砕した後、湿式ポットミルで48時間粉砕
を行なうようにしてもよい。Then, in step n4, the slag is crushed to obtain a powder having a particle size distribution shown by line 1 in FIG. The powder having such a particle size is sieved to obtain a particle size of 3 μm.
Less than fines are used in this example. To produce a powder having the particle size distribution shown in FIG.
It is also possible to use zirconia balls having a diameter of 10 mm, crush the slag to be ground and the balls with an iron pot mill having a body having an inner diameter of 230 mm and a length of 230 mm, and then mill for 48 hours with a wet pot mill.
工程n5で、前記工程n4で得られた粉体のうち粒径３μｍ
未満の粉砕100重量部に、バインダとしての粒径３μｍ
未満の粘土20〜30重量部を加えて調合ならびに混合を行
なう。In step n5, the particle diameter of the powder obtained in step n4 is 3 μm
Particle size of 3μm as binder in 100 parts by weight of less than crushed
20-30 parts by weight of less than clay is added and blended and mixed.
工程n6で、前記工程n5において調合ならびに混合された
粉体および粘土に、水25〜30重量部を添加して混練し、
250〜350poiseの粘度を有するスラリを生成する。In step n6, 25 to 30 parts by weight of water is added to the powder and clay prepared and mixed in step n5 and kneaded,
It produces a slurry with a viscosity of 250-350 poise.
工程n7で、前記工程n6において生成されたスラリは、石
膏などから成る硯の鋳型にその隅部まで確実に鋳込まれ
る。こうして鋳込まれたスラリは、鋳型の内面形状に正
確に一致して成型することができる。また、前記スラリ
の粘度は、250〜350poiseに調整されているため、鋳型
から取出す際に鋳込まれたスラリが鋳型に粘着してしま
うことなく円滑に取出すことができる。これによつて、
鋳型の内面形状に対応して確実に鋳込まれたスラリは、
その鋳型の内面形状を損なうことなく鋳型から取出すこ
とができる。In step n7, the slurry generated in step n6 is surely cast into a mold made of stone such as gypsum up to its corners. The slurry thus cast can be molded in exactly the shape of the inner surface of the mold. Further, since the viscosity of the slurry is adjusted to 250 to 350 poise, it is possible to smoothly take out the slurry cast when taking it out from the mold without sticking to the mold. By this,
The slurry that is surely cast according to the shape of the inner surface of the mold is
It can be taken out of the mold without damaging the shape of the inner surface of the mold.
次に工程n8で、前記工程n7において鋳型から取出された
スラリを、60℃雰囲気中において72時間乾燥し、引続き
110℃雰囲気中において24時間乾燥する。Next, in step n8, the slurry taken out of the mold in step n7 was dried in an atmosphere at 60 ° C. for 72 hours, and subsequently,
Dry in an atmosphere at 110 ° C for 24 hours.
工程n9において、前記工程n8で乾燥された半製品は、焼
成炉に収納される。この焼成炉の内部温度を50℃／時で
昇温し、950℃雰囲気中において１時間保温する。その
後200℃／時で降温し、約500℃付近に降温されたとき、
さらに引続き25℃／時で常温まで降温させる。工程n10
で成型品の検査が行なわれる。In step n9, the semi-finished product dried in step n8 is placed in a firing furnace. The internal temperature of this firing furnace is raised at 50 ° C./hour and kept in the atmosphere of 950 ° C. for 1 hour. After that, the temperature is lowered at 200 ° C / hour, and when the temperature is lowered to about 500 ° C,
The temperature is then lowered to room temperature at 25 ° C / hour. Process n10
The molded product is inspected.
このようにして、本実施例では焼成温度を950℃に設定
しており、他の焼成品の焼成温度に比べて比較的低い。
たとえば、土管の焼成温度は1100〜1200℃であり、粘土
質磁器の焼成温度は1400〜1500℃であり、アルミナ磁器
の焼成温度は1650〜1850℃である。したがつて焼成炉の
炉温を低く抑えることができるため、経済性が向上され
る。In this way, the firing temperature is set to 950 ° C. in this example, which is relatively lower than the firing temperatures of other fired products.
For example, the firing temperature of clay pipes is 1100 to 1200 ° C, the firing temperature of clay porcelain is 1400 to 1500 ° C, and the firing temperature of alumina porcelain is 1650 to 1850 ° C. Therefore, since the furnace temperature of the firing furnace can be kept low, the economical efficiency is improved.
なお、このような焼成に用いられる焼成炉は、酸化雰囲
気としてもよく、また還元雰囲気としてもよく、また窒
化炉を用いてもよい。焼成させるべき半製品を還元雰囲
気中、または窒化炉中で焼成することによつて、焼成後
の製品は、黒色とすることができる。また焼成雰囲気を
空気とするときは、得られる製品は褐色となる。したが
つて焼成時の雰囲気ガスを変えることによつて、得られ
る製品の色を変化調整することができる。The firing furnace used for such firing may be an oxidizing atmosphere, a reducing atmosphere, or a nitriding furnace. By firing the semi-finished product to be fired in a reducing atmosphere or in a nitriding furnace, the fired product can be made black. When the firing atmosphere is air, the obtained product becomes brown. Therefore, the color of the obtained product can be changed and adjusted by changing the atmosphere gas at the time of firing.
また成型品の原料として、一度高温熱履歴を受けたスラ
グが用いられるため、第２表に示すように収縮率を極め
て小さくすることができ、希望する形状寸法の成型品を
得ることができる。参考までに述べると、一般の鋳込み
成型により焼成した焼成品の収縮率は、17〜20％程度で
ある。Moreover, since slag that has once undergone high-temperature heat history is used as the raw material of the molded product, the shrinkage rate can be made extremely small as shown in Table 2, and a molded product having a desired shape and size can be obtained. For reference, the shrinkage rate of a fired product fired by general cast molding is about 17 to 20%.
なお、上述した工程n1〜n10によつて製造した硯の物性
は、第２表のとおりである。The physical properties of the slag manufactured by the above-described steps n1 to n10 are as shown in Table 2.
前述の実施例では、成型品としては硯であつたけれども
風鈴などであつてもよい。 In the above-mentioned embodiment, the molded product is a stone, but it may be a wind bell or the like.
効果 以上のように本発明によれば、耐摩耗性および耐水性を
有する鋳型成型品が生成される。また粒径が３μｍ未満
である粉体ならびに粘土に水を加えたスラリは、その粘
度が250〜350poiseに調整されているため、スラリはそ
の鋳型の内面形状に正確に一致した状態に成型すること
ができ、鋳型にスラリが粘着してしまうことなく、希望
する形状寸法を有する成型品を正確に製造することがで
きる。さらに焼成温度は比較的低い温度で焼成されるた
め、不必要に炉の温度を上げることがなく経済性が向上
される。Effects As described above, according to the present invention, a mold-molded article having abrasion resistance and water resistance is produced. Moreover, the viscosity of powders with a particle size of less than 3 μm and clay with water added is adjusted to a viscosity of 250-350 poise, so the slurry must be molded in a state that exactly matches the inner surface shape of the mold. Therefore, it is possible to accurately manufacture a molded product having a desired shape and size without the slurry sticking to the mold. Further, since the firing temperature is relatively low, the temperature of the furnace is not unnecessarily raised and the economy is improved.
また、このような産業廃棄物を溶融勝利した粉粒状スラ
グは安価であり、大量に入手することが可能であり、大
量の需要に応じることができる。Further, the powdery granular slag obtained by melting such industrial waste is inexpensive, can be obtained in a large amount, and can meet a large amount of demand.
第１図は本発明の一実施例の工程を示す図、第２図は第
１図に示された工程によつて製造された硯１を示す斜視
図、第３図は原料となるスラグの粒度分布を示すグラフ
である。 １…硯FIG. 1 is a view showing a process of one embodiment of the present invention, FIG. 2 is a perspective view showing a slag 1 manufactured by the process shown in FIG. 1, and FIG. 3 is a slag as a raw material. It is a graph which shows a particle size distribution. 1 ... Inkstone
Claims (1)
磁選して得られた粒径３μｍ以下のスラグと、 ３μｍ以下の粒径を有する粘土とを混合し、 前記スラグと前記粘土とに水を加えて粘度を約250〜350
poiseになるようにして鋳込み成型することを特徴とす
るスラグを用いた成型品の製造方法。1. A slag having a particle size of 3 μm or less obtained by magnetic separation of powdery slag obtained by melting industrial waste, and a clay having a particle size of 3 μm or less are mixed to obtain the slag and the clay. Add water to increase viscosity to about 250-350
A method for producing a molded product using slag, which comprises pouring and molding so as to become a poise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62056102A JPH0733279B2 (en) | 1987-03-10 | 1987-03-10 | Manufacturing method of molded products using slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62056102A JPH0733279B2 (en) | 1987-03-10 | 1987-03-10 | Manufacturing method of molded products using slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63222062A JPS63222062A (en) | 1988-09-14 |
| JPH0733279B2 true JPH0733279B2 (en) | 1995-04-12 |
Family
ID=13017739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62056102A Expired - Lifetime JPH0733279B2 (en) | 1987-03-10 | 1987-03-10 | Manufacturing method of molded products using slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733279B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014027649A1 (en) | 2012-08-14 | 2014-02-20 | 三菱瓦斯化学株式会社 | Polyether polyamide resin composition |
| WO2014119577A1 (en) | 2013-02-01 | 2014-08-07 | 三井化学株式会社 | Display device and multilayered optical film |
| WO2014156652A1 (en) | 2013-03-28 | 2014-10-02 | 日清紡ケミカル株式会社 | Ester-type resin composition, method for producing said ester-type resin composition, and molded article produced using said ester-type resin |
| DE102013223504A1 (en) | 2013-11-18 | 2015-05-21 | Tesa Se | Flame-resistant, temperature-resistant and hydrolysis-resistant carriers and their use in pressure-sensitive adhesive tapes for automotive applications |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2110171C (en) * | 1992-03-26 | 1997-06-03 | Ritsu Sato | Composition for high pressure casting slip, high pressure casting slip and method for preparing the composition and slip |
-
1987
- 1987-03-10 JP JP62056102A patent/JPH0733279B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014027649A1 (en) | 2012-08-14 | 2014-02-20 | 三菱瓦斯化学株式会社 | Polyether polyamide resin composition |
| WO2014119577A1 (en) | 2013-02-01 | 2014-08-07 | 三井化学株式会社 | Display device and multilayered optical film |
| WO2014156652A1 (en) | 2013-03-28 | 2014-10-02 | 日清紡ケミカル株式会社 | Ester-type resin composition, method for producing said ester-type resin composition, and molded article produced using said ester-type resin |
| DE102013223504A1 (en) | 2013-11-18 | 2015-05-21 | Tesa Se | Flame-resistant, temperature-resistant and hydrolysis-resistant carriers and their use in pressure-sensitive adhesive tapes for automotive applications |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63222062A (en) | 1988-09-14 |
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