JP6598373B2 - Waste gypsum board processing method and processing apparatus - Google Patents
Waste gypsum board processing method and processing apparatus Download PDFInfo
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- JP6598373B2 JP6598373B2 JP2016046901A JP2016046901A JP6598373B2 JP 6598373 B2 JP6598373 B2 JP 6598373B2 JP 2016046901 A JP2016046901 A JP 2016046901A JP 2016046901 A JP2016046901 A JP 2016046901A JP 6598373 B2 JP6598373 B2 JP 6598373B2
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- 229910052602 gypsum Inorganic materials 0.000 title claims description 65
- 239000010440 gypsum Substances 0.000 title claims description 65
- 239000002699 waste material Substances 0.000 title claims description 42
- 238000003672 processing method Methods 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims description 56
- 239000004568 cement Substances 0.000 claims description 34
- 239000010419 fine particle Substances 0.000 claims description 19
- 239000011362 coarse particle Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 238000010304 firing Methods 0.000 description 3
- 239000002537 cosmetic Substances 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Classifications
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Processing Of Solid Wastes (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
本発明は、廃石膏ボードを処理する方法及び装置に関し、特に、化粧加工が施された石膏ボードの廃材から剥離して回収した石膏付着紙を処理する方法及び装置に関する。 The present invention relates to a method and apparatus for treating waste gypsum board, and more particularly, to a method and apparatus for treating gypsum-attached paper that has been peeled off and recovered from waste material of gypsum board that has undergone a decorative process.
従来、建築物の解体や改装の際に廃棄される石膏ボードは、不燃物として最終処分場に埋立処理されていたが、廃石膏ボードの排出量は年々増加傾向にあるため、最終処分場の逼迫に鑑みて有効利用する技術が提案されている。 Conventionally, gypsum board discarded when building is demolished or refurbished has been landfilled as a non-combustible material at the final disposal site. However, the amount of waste gypsum board is increasing year by year. In view of the tightness, technologies that can be used effectively have been proposed.
化粧加工が施された廃石膏ボードには紙が付着しているため、これを処理したり有効利用するにあたっては、廃石膏ボードに付着した紙を剥離する必要がある。例えば、特許文献１には、廃石膏ボードを二水石膏と剥離紙とに分離し、二水石膏をセメントキルンで焼成して無水石膏として回収し、剥離紙をセメントクリンカ焼成における補助燃料としてキルンバーナから主燃料と共にセメントキルン内に吹き込んで処理する方法等が開示されている。
Since paper is attached to the waste gypsum board that has been subjected to the decorative process, it is necessary to peel the paper attached to the waste gypsum board in order to treat or effectively use it. For example, in
しかし、このような剥離紙には３０〜６０質量％（内割り）の石膏が付着しているため、廃石膏ボードからの石膏回収率にはまだ改善の余地がある。また、石膏が付着した剥離紙をセメントキルンに供給して燃料として使用する場合、剥離紙を窯前に供給するとセメント焼成装置から排出されるクリンカのＳＯ3濃度が変動し、剥離紙を窯尻に供給するとセメント焼成装置のプレヒータの最下段サイクロンから排出されたセメント原料等にＳＯ3が濃縮し、いずれにしてもセメントキルンに供給される石膏由来のＳＯ3により不具合が生ずるおそれがあった。 However, since 30-60 mass% (inner split) of gypsum adheres to such release paper, there is still room for improvement in the recovery rate of gypsum from waste gypsum board. Also, when the release paper with gypsum attached is supplied to the cement kiln and used as fuel, if the release paper is supplied before the kiln, the SO 3 concentration of the clinker discharged from the cement firing device will fluctuate, and the release paper will be When supplied to, the SO 3 concentrates in the cement raw material discharged from the lowermost cyclone of the preheater of the cement firing device, and in any case, there is a possibility that a problem may occur due to the SO 3 derived from gypsum supplied to the cement kiln.
そこで、本発明は、上記従来技術における問題点に鑑みてなされたものであって、廃石膏ボードからの石膏回収率を向上させ、ＳＯ3に付随する問題を防ぎながら剥離紙をセメントキルンで利用することを目的とする。 Therefore, the present invention has been made in view of the above-mentioned problems in the prior art, and improves the recovery rate of gypsum from waste gypsum board and uses the release paper in a cement kiln while preventing problems associated with SO 3. The purpose is to do.
上記目的を達成するため、本発明は、廃石膏ボードの処理方法であって、化粧加工が施された石膏ボードの廃材から剥離して回収した石膏付着紙を破砕し、該石膏付着紙の破砕物を分級して粗粒側破砕物と微粒側破砕物とに分離し、該分離して得られた粗粒側破砕物をセメントキルンに供給することを特徴とする。 In order to achieve the above object, the present invention is a method for treating waste gypsum board, crushing the gypsum-attached paper that has been peeled off and recovered from the waste material of the gypsum board that has been subjected to cosmetic processing, and crushing the gypsum-attached paper The product is classified and separated into a coarse particle side crushed material and a fine particle side crushed material, and the coarse particle side crushed material obtained by the separation is supplied to a cement kiln.
本発明によれば、石膏付着紙を破砕して分級することにより、石膏付着紙に含まれる石膏を微粒側破砕物として効率よく回収することができる。これにより、廃石膏ボードからの石膏回収率を向上させることができる。また、石膏が略々含まれない粗粒側破砕物をセメントキルンに供給することで、石膏由来のＳＯ3による不具合を防止しながら、石膏が取り除かれた紙をセメントキルンで燃料として利用することができる。 According to the present invention, the gypsum contained in the gypsum-attached paper can be efficiently recovered as a fine particle side crushed material by crushing and classifying the gypsum-attached paper. Thereby, the gypsum recovery rate from waste gypsum board can be improved. In addition, by supplying coarse-grained crushed material that is almost free of gypsum to the cement kiln, the paper from which the gypsum has been removed is used as fuel in the cement kiln while preventing problems due to SO 3 derived from gypsum. Can do.
また、上記廃石膏ボードの処理方法において、前記石膏付着紙を廃プラスチックと混合して破砕することができる。廃プラスチックは石膏と共に微粒側破砕物として排出されるため、石膏付着紙から石膏を取り除いた後の紙をセメントキルンで燃料として有効利用すると共に、廃プラスチックを石膏付着紙と共に処理することができる。 Moreover, in the processing method of the waste gypsum board, the gypsum-attached paper can be mixed with waste plastic and crushed. Since the waste plastic is discharged together with the gypsum as fine particle side crushed material, the paper after removing the gypsum from the gypsum-attached paper can be effectively used as a fuel in the cement kiln, and the waste plastic can be processed together with the gypsum-attached paper.
さらに、上記廃石膏ボードの処理方法において、前記石膏付着紙の破砕又は前記石膏付着紙及び前記廃プラスチックの破砕後、破砕物を分級して所定の粒径以上のものを除去し、該除去物をセメントキルンの窯前に供給すると共に、前記除去後破砕物をさらに分級して粗粒側破砕物と微粒側破砕物とに分離し、得られた粗粒側破砕物をセメントキルンに供給することができる。これにより、破砕物のうち所定の粒径以上のものをセメントキルンの窯前で燃料として利用することができる。 Further, in the method for treating a waste gypsum board, after crushing the gypsum-attached paper or crushing the gypsum-attached paper and the waste plastic, the crushed material is classified to remove those having a predetermined particle size or more, and the removed product Is supplied before the kiln of the cement kiln, and the crushed material after the removal is further classified and separated into coarse crushed material and fine crushed material, and the obtained coarse crushed material is supplied to the cement kiln. be able to. Thereby, the thing more than predetermined particle size among crushed objects can be utilized as a fuel in front of the kiln of a cement kiln.
また、本発明は、廃石膏ボードの処理装置であって、化粧加工が施された石膏ボードの廃材から剥離して回収した石膏付着紙を破砕する破砕装置と、該破砕装置から排出された破砕物を分級して粗粒側破砕物と微粒側破砕物とに分離する分級装置と、該分級装置から排出された粗粒側破砕物をセメントキルンに供給する供給装置とを備えることを特徴とする。 The present invention also relates to a waste gypsum board processing apparatus, a crushing apparatus for crushing gypsum-attached paper that has been peeled and recovered from the waste material of the gypsum board that has been subjected to cosmetic processing, and crushing discharged from the crushing apparatus Characterized in that it comprises a classification device for classifying a product and separating it into a coarse particle side crushed material and a fine particle side crushed material, and a supply device for supplying the coarse particle side crushed material discharged from the classification device to a cement kiln. To do.
本発明によれば、石膏付着紙を破砕して分級することにより、石膏付着紙に含まれる石膏を微粒側破砕物として効率よく回収することができる。これにより、廃石膏ボードからの石膏回収率を向上させることができる。また、石膏が略々含まれない粗粒側破砕物をセメントキルンに供給することで、石膏由来のＳＯ3に付随する問題を防ぎながら、石膏が取り除かれた紙をセメントキルンで燃料として利用することができる。 According to the present invention, the gypsum contained in the gypsum-attached paper can be efficiently recovered as a fine particle side crushed material by crushing and classifying the gypsum-attached paper. Thereby, the gypsum recovery rate from waste gypsum board can be improved. Also, by supplying the coarse-grained crushed material that is almost free of gypsum to the cement kiln, the paper from which the gypsum has been removed is used as fuel in the cement kiln while preventing problems associated with gypsum-derived SO 3. be able to.
以上のように、本発明によれば、廃石膏ボードからの剥離紙から効率よく石膏を回収することで、廃石膏ボードからの石膏回収率を向上させ、ＳＯ3に伴う問題を防ぎながら剥離紙をセメントキルンで利用することができる。 As described above, according to the present invention, by efficiently recovering gypsum from release paper from waste gypsum board, the recovery rate of gypsum from waste gypsum board is improved, and the release paper is prevented while preventing problems associated with SO 3. Can be used in cement kilns.
次に、本発明に係る廃石膏ボードの処理装置の一実施の形態について、図１を参照しながら説明する。尚、石膏付着紙とは、化粧加工が施された石膏ボードの廃材から剥離して回収した紙であって、３０〜６０質量％（内割り）の石膏が付着したものをいう。 Next, an embodiment of a waste gypsum board processing apparatus according to the present invention will be described with reference to FIG. The gypsum-attached paper refers to paper that is peeled off and collected from the waste material of gypsum board that has undergone makeup processing, and that has 30 to 60% by mass (internally divided) gypsum attached thereto.
廃石膏ボードの処理装置１は、石膏付着紙Ｐと廃プラスチックＷとを混合する混合装置２と、混合装置２からの混合物Ｍを破砕して分級する破砕・分級装置３と、破砕・分級装置３から排出された微粒側破砕物Ｆ１を分級する分級装置４とを備える。
The waste gypsum
混合装置２は、水平円筒型混合機等の容器回転型や、機械的・気流撹拌型混合機等の容器固定型、複合型混合機等種々のものを用いることができる。また、混合装置２を用いずに、重機で石膏付着紙Ｐと廃プラスチックＷとを混合することもできる。 As the mixing device 2, various types such as a container rotating type such as a horizontal cylindrical mixer, a container fixed type such as a mechanical / air flow stirring type mixer, a composite type mixer, and the like can be used. Further, the gypsum-attached paper P and the waste plastic W can be mixed by a heavy machine without using the mixing device 2.
破砕・分級装置３は、回転刃に破砕対象物を押しつけて削り取るように破砕する一軸破砕機等を備えた装置等を用いることができる。この破砕・分級装置３によって混合装置２からの混合物Ｍを破砕すると共に、分級して微粒側破砕物Ｆ１と粗粒側破砕物Ｃ１とに分離する。尚、破砕・分級装置３に代えて混合物Ｍの分級は行わずに破砕のみを行う破砕装置を用いてもよい。 The crushing / classifying device 3 may be a device equipped with a uniaxial crusher or the like that crushes the crushing object by pressing it against the rotary blade. The crushing / classifying device 3 crushes the mixture M from the mixing device 2 and classifies it to separate the fine particle side crushed material F1 and the coarse particle side crushed material C1. Instead of the crushing / classifying device 3, a crushing device that only crushes without classifying the mixture M may be used.
分級装置４は、破砕・分級装置３から排出された微粒側破砕物Ｆ１を分級して微粒側破砕物Ｆ２と粗粒側破砕物Ｃ２とに分離するために備えられる。尚、破砕・分級装置３で分級を行わない場合には、破砕・分級装置３から排出される破砕物が分級装置４にそのまま供給される。分級装置４は、振動篩や気流式分級器等を用いることができるが、微粒側破砕物Ｆ１や破砕・分級装置３からの破砕物を分級できるものであれば、これら以外のものを用いることができる。 The classifier 4 is provided for classifying the fine particle side crushed material F1 discharged from the crushing / classifying device 3 and separating it into the fine particle side crushed material F2 and the coarse particle side crushed material C2. In addition, when classification is not performed by the crushing / classifying device 3, the crushed material discharged from the crushing / classifying device 3 is supplied to the classifying device 4 as it is. The classifier 4 can use a vibration sieve, an airflow classifier, or the like, but if it can classify the crushed material from the fine particle side crushed material F1 or the crushing / classifying device 3, use other than these. Can do.
次に、上記構成を有する廃石膏ボードから回収した石膏付着紙の処理装置１の動作について、図１を参照しながら説明する。
Next, operation | movement of the
受け入れた石膏付着紙Ｐと廃プラスチックＷとを混合装置２に供給して混合する。混合装置２から排出した混合物Ｍを破砕・分級装置３で破砕及び分級し、破砕・分級装置３から排出される微粒側破砕物Ｆ１を分級装置４に供給すると共に、粗粒側破砕物Ｃ１を供給装置（不図示）によってセメントキルンの窯前に供給し、燃料として利用する。 The received gypsum adhering paper P and waste plastic W are supplied to the mixing device 2 and mixed. The mixture M discharged from the mixing device 2 is crushed and classified by the crushing / classifying device 3, and the fine particle side crushed material F1 discharged from the crushing / classifying device 3 is supplied to the classification device 4, and the coarse particle side crushed material C1 is It is supplied before the kiln of the cement kiln by a supply device (not shown) and used as fuel.
微粒側破砕物Ｆ１を分級装置４で分級して微粒側破砕物Ｆ２と粗粒側破砕物Ｃ２とに分離し、微粒側破砕物Ｆ２は、石膏の含有率が大きくて紙の含有率が小さいため、セメント製造工程の仕上工程等で有効利用することができる。 The fine particle side crushed material F1 is classified by the classifier 4 and separated into the fine particle side crushed material F2 and the coarse particle side crushed material C2, and the fine particle side crushed material F2 has a large content of gypsum and a small content of paper. Therefore, it can be effectively used in the finishing process of the cement manufacturing process.
一方、粗粒側破砕物Ｃ２を供給装置（不図示）によってセメントキルンの窯前又は窯尻に燃料として供給する。粗粒側破砕物Ｃ２の石膏含有率は低いため、セメントキルンの窯前に投入してもセメントキルン内のクリンカのＳＯ3濃度の変動を招くことがない。また、粗粒側破砕物Ｃ２を窯尻に投入しても、セメント焼成装置のプレヒータの最下段サイクロンから排出されるセメント原料等にＳＯ3が濃縮することがない。さらに、混合物Ｍを破砕・分級装置３で破砕して粒径を小さくしたため、混合物Ｍから得られた粗粒側破砕物Ｃ２をセメントキルンの窯前に投入することもできる。 On the other hand, coarse grain side crushed material C2 is supplied as fuel to the kiln of the cement kiln or to the bottom of the kiln by a supply device (not shown). Since the gypsum content of the coarse grain side crushed material C2 is low, even if it is added before the cement kiln kiln, the SO 3 concentration of the clinker in the cement kiln does not change. Further, even if the coarse grain side crushed material C2 is put into the kiln bottom, SO 3 is not concentrated in the cement raw material discharged from the lowermost cyclone of the preheater of the cement baking apparatus. Further, since the mixture M is crushed by the crushing / classifying device 3 to reduce the particle size, the coarse-grained crushed material C2 obtained from the mixture M can be put in front of the cement kiln kiln.
以上のように、上記実施の形態によれば、石膏付着紙Ｐを破砕して分級することにより、石膏付着紙Ｐに含まれる石膏を微粒側破砕物Ｆ２として効率よく回収することができる。これにより、廃石膏ボードからの石膏回収率を向上させることができる。また、石膏が略々含まれない粗粒側破砕物Ｃ２をセメントキルンに供給することで、石膏由来のＳＯ3による不具合を防ぎながら、石膏が取り除かれた紙をセメントキルンで燃料として利用することができる。 As mentioned above, according to the said embodiment, the gypsum contained in the gypsum adhesion paper P can be efficiently collect | recovered as the fine particle side crushed material F2 by crushing and classifying the gypsum adhesion paper P. Thereby, the gypsum recovery rate from waste gypsum board can be improved. In addition, by supplying coarse-grained crushed material C2 that is substantially free of gypsum to the cement kiln, the paper from which the gypsum has been removed is used as fuel in the cement kiln while preventing problems due to SO 3 derived from gypsum. Can do.
１ 廃石膏ボードの処理装置
２ 混合装置
３ 破砕・分級装置
４ 分級装置
Ｃ１ 粗粒側破砕物
Ｃ２ 粗粒側破砕物
Ｆ１ 微粒側破砕物
Ｆ２ 微粒側破砕物
Ｍ 混合物
Ｐ 石膏付着紙
Ｗ 廃プラスチック
DESCRIPTION OF
Claims (4)
該石膏付着紙の破砕物を分級して粗粒側破砕物と微粒側破砕物とに分離し、
該分離して得られた粗粒側破砕物をセメントキルンに供給することを特徴とする廃石膏ボードの処理方法。 Crush the gypsum-attached paper that was peeled off and recovered from the waste material of the plasterboard that was subjected to makeup processing,
Classifying the crushed material of the gypsum-attached paper and separating it into coarse crushed material and fine crushed material,
A method for treating a waste gypsum board, characterized in that the coarsely crushed material obtained by the separation is supplied to a cement kiln.
該破砕装置から排出された破砕物を分級して粗粒側破砕物と微粒側破砕物とに分離する分級装置と、
該分級装置から排出された粗粒側破砕物をセメントキルンに供給する供給装置とを備えることを特徴とする廃石膏ボードの処理装置。 A crushing device for crushing the gypsum-attached paper that has been peeled off and recovered from the waste material of the plasterboard that has been subjected to the decorative processing;
A classification device for classifying the crushed material discharged from the crushing device and separating it into a coarse particle side crushed material and a fine particle side crushed material;
A processing apparatus for waste gypsum board, comprising: a supply device that supplies coarse-grained crushed material discharged from the classification device to a cement kiln.
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| JP6598373B2 true JP6598373B2 (en) | 2019-10-30 |
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| JP2011057465A (en) * | 2009-09-07 | 2011-03-24 | Taiheiyo Cement Corp | Quick lime production system and method of producing the same |
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