JP5459698B2 - 貝殻粉末含有石炭灰固化物の製造方法 - Google Patents
貝殻粉末含有石炭灰固化物の製造方法 Download PDFInfo
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- JP5459698B2 JP5459698B2 JP2009073975A JP2009073975A JP5459698B2 JP 5459698 B2 JP5459698 B2 JP 5459698B2 JP 2009073975 A JP2009073975 A JP 2009073975A JP 2009073975 A JP2009073975 A JP 2009073975A JP 5459698 B2 JP5459698 B2 JP 5459698B2
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- 239000010883 coal ash Substances 0.000 title claims description 149
- 239000000843 powder Substances 0.000 title claims description 108
- 238000000034 method Methods 0.000 title description 16
- 239000000047 product Substances 0.000 claims description 81
- 239000000463 material Substances 0.000 claims description 66
- 238000004519 manufacturing process Methods 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 30
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 23
- 240000006909 Tilia x europaea Species 0.000 claims description 23
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 23
- 239000010440 gypsum Substances 0.000 claims description 23
- 229910052602 gypsum Inorganic materials 0.000 claims description 23
- 239000004571 lime Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 22
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 21
- 239000002956 ash Substances 0.000 claims description 21
- 235000020637 scallop Nutrition 0.000 claims description 17
- 238000006703 hydration reaction Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 241000237509 Patinopecten sp. Species 0.000 claims description 12
- 235000015170 shellfish Nutrition 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 26
- 239000002699 waste material Substances 0.000 description 15
- 239000000292 calcium oxide Substances 0.000 description 14
- 235000012255 calcium oxide Nutrition 0.000 description 14
- 239000011575 calcium Substances 0.000 description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 description 13
- 238000000465 moulding Methods 0.000 description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 10
- 229910052791 calcium Inorganic materials 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 241000237502 Ostreidae Species 0.000 description 9
- 239000003513 alkali Substances 0.000 description 9
- 238000010828 elution Methods 0.000 description 9
- 235000020636 oyster Nutrition 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000004576 sand Substances 0.000 description 6
- 241000237503 Pectinidae Species 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- -1 shells (unfired) Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 241000237519 Bivalvia Species 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 235000020639 clam Nutrition 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- BWSYSDBUNJKMDP-UHFFFAOYSA-N S(=O)(=O)(O)O.C(O)(O)=O.O Chemical compound S(=O)(=O)(O)O.C(O)(O)=O.O BWSYSDBUNJKMDP-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- DPLVEEXVKBWGHE-UHFFFAOYSA-N potassium sulfide Chemical compound [S-2].[K+].[K+] DPLVEEXVKBWGHE-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002344 surface layer Substances 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
酸化鉄、酸化カルシウムの含有量が比較的多く、水和反応性の高い石炭灰(組成:SiO2:Al2O3:Fe2O3:CaO=52:29:9:5)60質量%、ホタテの貝
殻粉末23質量%、生石灰13質量%、脱硫石膏4質量%となるように(総カルシウム含有量[CaO換算]30質量%)、原料をボールミルで水を用いて湿式混合し、混合物を80℃で1時間乾燥して粘土状の乾燥物(水分含有量約20質量%)とし、これを2MPa、2分で一軸圧成型してペレット状の成型物を得た。
酸化ケイ素の含有量が比較的多く、水和反応性の低い石炭灰(組成:SiO2:Al2O3:Fe2O3:CaO=76:17:3.2:0.2)60質量%、ホタテの貝殻粉
末26質量%、生石灰14質量%、脱硫石膏4質量%となるように(総カルシウム含有量[CaO換算]30質量%)、原料をボールミルで水を用いて湿式混合し、混合物を80℃で1時間乾燥して粘土状の乾燥物(水分含有量約20質量%)とし、これを2MPa、2分で一軸圧成型し、ペレット状の成型物を得た。
ホタテの貝殻の代わりにカキの貝殻を用いた以外は、実施例1、2と同様に(又は他の配合)して、実施例3の貝殻粉末含有石炭灰固化物を得た。
酸化ケイ素の含有量が比較的多く、水和反応性の良い石炭灰(組成:SiO2:Al2
O3:Fe2O3:CaO=52:29:9:5)70質量%、ホタテの貝殻粉末17質
量%、生石灰9質量%、脱硫石膏4質量%となるように(総カルシウム含有量[CaO換算]23質量%)、原料をボールミルで水を用いて湿式混合し、混合物を80℃で1時間乾燥して粘土状の乾燥物(水分含有量約20質量%)とし、これを2MPa、2分で一軸圧成型し、ペレット状の成型物を得た。
図2には本発明の実施例1の貝殻粉末含有石炭灰固化物断面の電子線プローブマイクロアナライザ(EPMA)分析の結果の図、図3には試験例1で使用した貝殻粉末含有石炭灰固化物とその観察部位の模式状況、図4には実施例1の貝殻粉末含有石炭灰固化物の高湿養生後の固化物表面(固化体表面)及び固化物内部(固化体内部)のSEM(Scanning Electron Microscope)写真、図5には実施例1の石炭灰含有率(FA)が60質量%の固化物の被膜と内部の結晶構造の定性結果を表すX線回折(XRD)の図、図6には実施例1の貝殻粉末含有石炭灰固化物のかさ密度と石炭灰含有率の関係を示してある。
図7には実施例4の貝殻粉末含有石炭灰固化物のpHの状況、図8には実施例4の貝殻粉末含有石炭灰固化物の5つのサンプルに対する圧壊強度を示してある。
Claims (9)
- 石炭灰、貝殻粉末、石灰類を含む材料を湿式混合して混合物を得る工程と、この混合物から水分を低減し粘土状混合物とした後、加圧成型して成型物を得る工程と、加圧成型した成型物を高湿環境下に保持して常圧下で水和反応させて水和反応物とする工程と、この水和反応物を水中養生して水中養生物を得る工程と、水中養生物を大気中に放置して石炭灰固化物を得る工程とを具備することを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1に記載の貝殻粉末含有石炭灰固化物の製造方法において、さらに石膏類を材料として用いることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1又は2に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記石灰類として、貝殻粉末を焼成したものを用いることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1〜3の何れか一項に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記混合物の前記石炭灰の含有量が20〜80質量%であることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1〜4の何れか一項に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記貝殻粉末が、ホタテ貝殻およびカキ貝殻の少なくとも一種であり、未焼成のものであることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1〜5の何れか一項に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記粘土状混合物の水分含有量を18〜24質量%とすることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1〜6の何れか一項に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記高湿環境が、相対湿度が85%RH以上の室温常圧下の環境であることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1〜7の何れか一項に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記水中養生は養生水を交換することなく行うことを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
- 請求項1〜8の何れか一項に記載の貝殻粉末含有石炭灰固化物の製造方法において、前記石炭灰固化物は、表面に炭酸塩からなる被膜を有するものであることを特徴とする貝殻粉末含有石炭灰固化物の製造方法。
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JP5888765B2 (ja) * | 2011-03-30 | 2016-03-22 | 一般財団法人電力中央研究所 | 石炭灰の圧密造粒装置 |
JP5704603B2 (ja) * | 2011-03-30 | 2015-04-22 | 一般財団法人電力中央研究所 | 石炭灰固化物の製造方法 |
JP2014214146A (ja) * | 2013-04-30 | 2014-11-17 | 国立大学法人室蘭工業大学 | 紫外線遮蔽剤 |
JP6233840B2 (ja) * | 2013-12-26 | 2017-11-22 | 一般財団法人電力中央研究所 | 貝殻粉末含有石炭灰固化物 |
JP2016222494A (ja) * | 2015-05-29 | 2016-12-28 | 一般財団法人電力中央研究所 | 石炭灰固化物の製造方法 |
KR101801966B1 (ko) * | 2016-01-29 | 2017-12-28 | 경상대학교산학협력단 | 황산처리된 굴패각을 포함하는 고화재 및 이를 이용한 시공방법 |
JP2018001088A (ja) * | 2016-06-30 | 2018-01-11 | 一般財団法人電力中央研究所 | 貝殻粉末含有石炭灰固化物 |
CN106824994A (zh) * | 2017-02-15 | 2017-06-13 | 上海浦东路桥建设股份有限公司 | 壳类废弃物资源化为道路工程材料的工艺方法 |
JP2019058851A (ja) * | 2017-09-25 | 2019-04-18 | 一般財団法人電力中央研究所 | 貝殻粉末含有石炭灰固化物の製造方法 |
CN108218270A (zh) * | 2018-01-24 | 2018-06-29 | 山东建筑大学 | 一种利用工业废弃物制备防水抗菌水泥的方法 |
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