WO2012114622A1 - Composition de ciment et son procédé de production - Google Patents

Composition de ciment et son procédé de production Download PDF

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Publication number
WO2012114622A1
WO2012114622A1 PCT/JP2011/079222 JP2011079222W WO2012114622A1 WO 2012114622 A1 WO2012114622 A1 WO 2012114622A1 JP 2011079222 W JP2011079222 W JP 2011079222W WO 2012114622 A1 WO2012114622 A1 WO 2012114622A1
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mass
content
cement
cement composition
raw material
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PCT/JP2011/079222
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English (en)
Japanese (ja)
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殿河内　仁
貴康 伊藤
則彦 澤邊
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宇部興産株式会社
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Priority to KR1020137024464A priority Critical patent/KR101829498B1/ko
Priority to SG2013063888A priority patent/SG192920A1/en
Priority to CN201180068401.5A priority patent/CN103391908B/zh
Publication of WO2012114622A1 publication Critical patent/WO2012114622A1/fr

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    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/003—Barium or strontium cements
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/02—Portland cement
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/345—Hydraulic cements not provided for in one of the groups C04B7/02 - C04B7/34
    • C04B7/3456—Alinite cements, e.g. "Nudelman"-type cements, bromo-alinite cements, fluoro-alinite cements
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel

Definitions

  • the present invention relates to a cement composition and a method for producing the same.
  • the cement composition reacts with the components contained in the cement composition and water to form a hydrate and develop strength.
  • the strength of cement paste, mortar or concrete increases as the amount of hydrate produced increases.
  • cement users are demanding a cement composition capable of obtaining a hardened body such as concrete having excellent strength development without impairing the fluidity and setting time of the concrete.
  • Non-Patent Document 1 As a method for improving the strength development of the concrete, means such as “reducing the fineness of the cement particles (brane specific surface area)” and “increasing the alite (C 3 S) content of the cement clinker” are used. (For example, Non-Patent Document 1).
  • Non-Patent Document 1 the fineness and mineral composition of the cement composition such as “to make the fineness of the cement particles (brane specific surface area) fine”, “to increase the C 3 S content of the cement clinker”, etc. If the strength development of a hardened body such as concrete is improved by means of changing, there is a problem that the fluidity is lowered and the setting time is further shortened.
  • the present invention has been made in view of the above problem, and maintains the appropriate fresh properties (standard soft water content, setting time) of cement paste, mortar, or concrete, and develops strength of a cured body such as mortar or concrete. It aims at providing the cement composition which can improve property, and its manufacturing method.
  • the present inventors have maintained the fresh properties of cement paste, mortar or concrete, while improving the strength expression of a cured body such as mortar or concrete.
  • the inventors have found that the strontium (Sr) content and the molybdenum (Mo) content in the cement composition have an influence, and have completed the present invention.
  • the present invention relates to a cement composition having a Sr content of 0.02 to 0.06% by mass and a Mo content of 0.0002 to 0.0023% by mass.
  • the present invention relates to the above cement composition having an R 2 O content of 0.3 to 0.6% by mass.
  • the present invention relates to the above cement composition, wherein the MgO content is 0.7 to 1.8% by mass and the SO 3 content is 1.6 to 2.5% by mass.
  • the present invention has a C 3 S content of 45 to 70% by mass, a C 2 S content of 5 to 25% by mass, a C 3 A content of 6 to 15% by mass and a C 4 AF content of 7 to 15%. It is related with the said cement composition which is the mass%.
  • the present invention also provides limestone, meteorite, coal so that the Sr content of the cement composition is 0.02 to 0.06% by mass and the Mo content is 0.0002 to 0.0023% by mass.
  • a process for preparing a cement clinker by adjusting the raw material intensity of a raw material selected from the group consisting of ash, clay, blast furnace slag, construction generated soil, sewage sludge, hydrocake and iron source (A) And a cement clinker, gypsum, and a step (B) of pulverizing limestone and blast furnace slag as a mixed material.
  • the present invention provides the raw material for cement clinker in step (A) as follows: 700 to 1400 kg of limestone per ton of cement clinker, 20 to 150 kg of limestone, 0 to 300 kg of coal ash, 0 to 100 kg of clay, 0 to 100 kg of blast furnace slag,
  • the present invention relates to a method for producing the above cement composition, comprising 10 to 150 kg, sewage sludge 0 to 100 kg, hydrocake 0 to 100 kg, and iron source 30 to 80 kg.
  • the present invention in order to maintain the proper fresh properties of cement paste, mortar or concrete, while maintaining the standard soft water amount (water amount necessary for obtaining a certain softness) and setting time of cement paste. Further, it is possible to provide a cement composition and a method for producing the same, which improve the strength development property (for example, the strength development property of a material age of 28 days) of a cured body such as mortar or concrete.
  • the cement composition of the present invention is characterized in that the Sr content is 0.02 to 0.06% by mass and the Mo content is 0.0002 to 0.0023% by mass.
  • Sr and Mo in the cement composition are trace components.
  • the present inventors have determined that the Sr content and the Mo content in a cement composition affect the strength development of a cement paste, mortar or concrete hardened body using the cement composition. By keeping the Sr content and Mo content in the proper ranges, the strength of these hardened bodies is maintained while maintaining appropriate fresh properties (standard soft water content, setting time) of cement paste, mortar or concrete. It was found that expression could be improved.
  • the Sr content and the Mo content of the cement composition are content ratios (mass%) with respect to the total mass of the cement composition.
  • the Sr content and Mo content of the cement composition are measured according to the Cement Association standard test method JCAS I-52 2000 “Method for quantifying trace components in cement by ICP emission spectroscopic analysis and electric heating atomic absorption spectrometric method”. can do.
  • the Sr content of the cement composition is 0.02 to 0.06% by mass, preferably 0.025 to 0.057% by mass, more preferably 0.03 to 0.055% by mass. More preferably, it is 0.035 to 0.05% by mass, and particularly preferably 0.038 to 0.045% by mass.
  • the Mo content of the cement composition is 0.0002 to 0.0023 mass%, preferably 0.0003 to 0.0020 mass% or less, more preferably 0.0004 to 0.0015 mass%. More preferably, the content is 0.0005 to 0.0012% by mass, and particularly preferably 0.0006 to 0.0009% by mass.
  • the cement composition When the Sr content of the cement composition is less than 0.02% by mass or more than 0.06% by mass, or when the Mo content of the cement composition exceeds 0.0023% by mass, the cement composition is used. The setting time of the paste, mortar, or concrete is delayed, and there is a case where appropriate strength development of the hardened body of the cement paste, mortar, or concrete using the cement composition may not be maintained.
  • the R 2 O (alkali) content of the cement composition refers to an amount represented by the following formula (1).
  • R 2 O content of cement composition Na 2 O content + 0.658 ⁇ K 2 O content (1)
  • the R 2 O content of the cement composition is preferably 0.3 to 0.6% by mass, more preferably 0.35 to 0.55% by mass, and still more preferably 0.37 to 0.54% by mass. Particularly preferred is 0.38 to 0.52 mass%.
  • the R 2 O content of the cement composition is a content ratio (mass%) with respect to the total mass of the cement composition, and this content ratio is measured according to JIS R 5202: 1998 “Chemical analysis method of Portland cement”. be able to.
  • the MgO content of the cement composition is preferably 0.7 to 1.8% by mass, more preferably 0.7 to 1.7% by mass, still more preferably 0.8 to 1.6% by mass, particularly preferably. 0.9 to 1.5% by mass, very preferably 0.9 to 1.4% by mass.
  • the MgO content of the cement composition is the content ratio (mass%) with respect to the total mass of the cement composition, and this content ratio can be measured according to JIS R 5202: 1998 “Chemical analysis method of Portland cement”. it can.
  • the SO 3 content of the cement composition is preferably 1.6 to 2.5% by mass, more preferably 1.6 to 2.4% by mass, still more preferably 1.7 to 2.35% by mass, Particularly preferred is 1.8 to 2.35% by mass.
  • the SO 3 content in the cement composition is the content ratio (mass%) with respect to the total mass of the cement composition, and this content ratio is measured according to JIS R 5202: 1998 “Chemical analysis method of Portland cement”. be able to.
  • the mineral composition of the cement composition preferably has a C 3 S content of 45 to 70% by mass, a C 2 S content of 5 to 25% by mass, a C 3 A content of 6 to 15% by mass and a C 4 AF content 7 to 15% by mass, more preferably 48 to 65% by mass of C 3 S content, 7 to 25% by mass of C 2 S content, 8 to 13% by mass of C 3 A content and C 4 AF content is 8 to 12% by mass, more preferably C 3 S content is 53 to 65% by mass, C 2 S content is 10 to 23% by mass, and C 3 A content is 9 to 12% by mass.
  • % And C 4 AF content of 8 to 11% by mass, particularly preferably C 3 S content of 55 to 63% by mass, C 2 S content of 11 to 20% by mass, and C 3 A content of 9 to 11%.
  • the mass% and the C 4 AF content are 8 to 10 mass%.
  • the C 3 S content (alite), the C 2 S content (belite), the C 3 A content (aluminate phase), and the C 4 AF content (ferrite phase), which are mineral compositions of the cement composition ) Is calculated by the following Borg equations [1] to [4].
  • CaO content”, SiO 2 content”, “Al 2 O 3 content” and “Fe 2 O 3 content” in the formula are respectively CaO, SiO 2 and Al 2 O 3 in the cement composition. a content (mass%) and for the entire mass of the cement composition of Fe 2 O 3. These content ratios can be measured by JIS R 5202 “Method for chemical analysis of Portland cement” or JIS R 5204 “Method for fluorescent X-ray analysis of cement”.
  • the method for producing a cement composition of the present invention is such that the Sr content of the cement composition is 0.02 to 0.06% by mass and the Mo content is 0.0002 to 0.0023% by mass.
  • Cement clinker is manufactured by adjusting the raw material intensity of raw materials selected from the group consisting of limestone, meteorite, coal ash, clay, blast furnace slag, construction generated soil, sewage sludge, hydrocake and iron source, and firing the adjusted raw materials A step (A), a cement clinker, a gypsum, and a step (B) of blending and grinding limestone and blast furnace slag as a mixed material.
  • Examples of the raw material for the cement clinker in the step (A) include limestone, meteorite, coal ash, clay, blast furnace slag, construction generated soil, sewage sludge, hydrocake, and iron source.
  • Coal ash is generated from a coal-fired power plant or the like, and includes cinder ash, fly ash, clinker ash, and bottom ash.
  • Examples of construction generated soil include residual soil, mud, and waste soil that are generated as a result of construction work.
  • Examples of sewage sludge include sludge, dry pulverized limestone, and incineration residues.
  • Hydrocake is a by-product generated in the process of adding a small amount of calcium hydroxide to seawater when removing seawater magnesia clinker, and removing carbon dioxide in seawater.
  • the thing which has a salt as a main component is mentioned.
  • the iron source include copper tangling and blast furnace dust.
  • it is a raw material which contains Sr to some extent, it may be other than said limestone, meteorite, coal ash, clay, blast furnace slag, construction generated soil, sewage sludge, hydrocake, and iron source.
  • the raw material unit of the cement clinker raw material in the step (A) is 700 to 1400 kg of limestone, 20 to 150 kg of meteorite, and 0 to 300 kg of coal ash on a dry base (state not containing water) per ton (t) of cement clinker. It is preferable to add 0-100 kg of clay, 0-100 kg of blast furnace slag, 10-150 kg of construction generated soil, 0-100 kg of sewage sludge, 0-100 kg of hydrocake and 30-80 kg of iron source.
  • step (A) as a raw material for cement clinker, limestone 800 to 1300 kg, meteorite 20 to 100 kg, coal ash 10 to 250 kg, clay 0 to 80 kg, blast furnace slag 5 per ton (t) of cement clinker More preferably, 50 kg, construction soil 20-150 kg, sewage sludge 0-70 kg, hydrocake 20-80 kg and iron source 30-60 kg are blended. More preferably, the coal ash is 20 to 250 kg on a dry basis.
  • the “raw material basic unit” means the mass (kg / t-clinker) of each raw material used for producing 1 ton of cement clinker.
  • step (A) As a method of adjusting the raw material basic unit of the cement clinker raw material in step (A), the Sr content and the Mo content in each cement clinker raw material are measured, and the raw material basic unit of the cement clinker raw material containing a large amount of Sr or Mo is used. Mainly adjusting the raw material basic unit so that the Sr content of the cement clinker composition is 0.02 to 0.06 mass% and the Mo content is 0.0002 to 0.0023 mass%.
  • the amount of iron source used has a great influence on the Mo content in the cement composition.
  • the copper chain has a high Mo content, and when the copper chain is used as the iron source, 30-80 kg per ton (t) of cement clinker, which is a preferable range as a raw material basic unit of the iron source.
  • / T is preferably 5 to 70 kg / t, more preferably 5 to 60 kg / t, still more preferably 5 to 55 kg / t, and particularly preferably 5 to 5 kg per ton of cement clinker. 50 kg / t.
  • the MgO content of the cement composition in a specific range, based on the MgO content of copper tangles and blast furnace dust as limestone, meteorite, blast furnace slag, coal ash, construction generated soil, blast furnace dust, hydrocake and iron source, The raw material intensity of each raw material is adjusted so that the total MgO content of these raw materials is 0.7 to 1.8% by mass.
  • Sr content in each raw material, Mo content, and MgO content are in the following ranges.
  • Sr content in each raw material, Mo content, and MgO content are the content rate (mass%) with respect to each whole raw material (100 mass%).
  • the Sr content is preferably 0.005 to 0.07% by mass, more preferably 0.005 to 0.06% by mass, still more preferably 0.01 to 0.06% by mass, particularly preferably.
  • a thing of 0.015-0.055 mass is used.
  • the Mo content is preferably 0.002% by mass or less, more preferably 0.001% by mass or less, still more preferably 0.0005% by mass or less, and particularly preferably 0.0003% by mass or less. use.
  • the MgO content is preferably 0.1 to 1.5% by mass or less, more preferably 0.2 to 1.3% by mass or less, still more preferably 0.2 to 1.1% by mass or less. Particularly preferably, 0.3 to 1.0% by mass is used.
  • the R 2 O content is preferably 0.05% by mass or less, more preferably 0.001 to 0.04% by mass, still more preferably 0.005 to 0.03% by mass, and particularly preferably 0. 0.005 to 0.02% by mass is used.
  • the Sr content is preferably 0.001 to 0.04% by mass, more preferably 0.001 to 0.03% by mass, still more preferably 0.001 to 0.025% by mass, and still more preferably. 0.001 to 0.02% by mass is used.
  • the Mo content is preferably 0.002% by mass or less, more preferably 0.001% by mass or less, further preferably 0.0005% by mass or less, particularly preferably 0.0004% by mass or less. use.
  • the content of MgO is preferably 0.05 to 1.0% by mass, more preferably 0.1 to 0.8% by mass, still more preferably 0.1 to 0.6% by mass, particularly preferably 0. Use 1 to 0.5% by mass.
  • the R 2 O content is preferably 0.1 to 4.0% by mass, more preferably 0.1 to 3.0% by mass, still more preferably 0.3 to 2.5% by mass, particularly Preferably, 0.3 to 2.0% by mass is used.
  • the coal ash has a Sr content of preferably 0.02 to 0.2% by mass, more preferably 0.02 to 0.15% by mass, still more preferably 0.02 to 0.13% by mass, particularly preferably. Is 0.02 to 0.12% by mass.
  • the coal ash has a Mo content of preferably 0.004% by mass or less, more preferably 0.003% by mass or less, still more preferably 0.002% by mass or less, and particularly preferably 0.0015% by mass or less. Is used.
  • the MgO content is preferably 0.2 to 3.0% by mass, more preferably 0.4 to 3.0% by mass, still more preferably 0.4 to 2.5% by mass, particularly preferably. Is 0.4 to 2.3% by mass.
  • the R 2 O content is preferably 0.1 to 3.5% by mass, more preferably 0.2 to 3.0% by mass, still more preferably 0.3 to 2.5% by mass, Particularly preferably, 0.5 to 2.0% by mass is used.
  • the Sr content is preferably 0.02 to 0.08% by mass, more preferably 0.02 to 0.07% by mass, still more preferably 0.02 to 0.06% by mass, and particularly preferably. Is 0.02 to 0.05% by mass or less.
  • the Mo content is preferably 0.002% by mass or less, more preferably 0.001% by mass or less, still more preferably 0.0005% by mass or less, particularly preferably 0.0003% by mass or less. Is used.
  • the content of MgO is preferably 3.0 to 10% by mass, more preferably 3.0 to 8.0% by mass, still more preferably 3.0 to 7.0% by mass, and particularly preferably 4%. 0.0 to 7.0% by mass is used.
  • the R 2 O content is preferably 0.02 to 1.0% by mass, more preferably 0.04 to 0.8% by mass, still more preferably 0.06 to 0.6% by mass, Particularly preferably, 0.08 to 0.5% by mass is used.
  • the Sr content is preferably 0.001 to 0.03% by mass, more preferably 0.003 to 0.025% by mass, still more preferably 0.003 to 0.02% by mass, and particularly preferably. 0.004 to 0.015 mass% or less is used.
  • the clay has a Mo content of preferably 0.002% by mass or less, more preferably 0.001% by mass or less, still more preferably 0.0005% by mass or less, and particularly preferably 0.0004% by mass or less. use.
  • the content of MgO is preferably 0.3 to 6.0% by mass, more preferably 0.3 to 5.0% by mass, still more preferably 0.3 to 4.0% by mass, particularly preferably. Is 0.5 to 3.0% by mass.
  • the R 2 O content is preferably 0.5 to 4.0% by mass, more preferably 0.7 to 3.5% by mass, still more preferably 1.0 to 3.0% by mass, Preferably 1.2 to 2.8% by mass is used.
  • the Sr content is preferably 0.01 to 0.4% by mass, more preferably 0.01 to 0.3% by mass, still more preferably 0.01 to 0.2% by mass, Preferably, 0.015 to 0.1% by mass is used.
  • the Mo content is preferably 0.002% by mass or less, more preferably 0.001% by mass or less, still more preferably 0.0005% by mass or less, and particularly preferably 0.0004% by mass or less.
  • the content of MgO is preferably 0.5 to 6.0% by mass, more preferably 0.5 to 5.0% by mass, still more preferably 1.0 to 4.0% by mass, especially Preferably, 1.0 to 3.0% by mass is used.
  • the content of R 2 O is preferably 0.5 to 4.5% by mass, more preferably 0.7 to 4.0% by mass, and still more preferably 1.0 to 3.5% by mass. Particularly preferably, 1.2 to 3.0% by mass is used.
  • the Sr content is preferably 0.001 to 0.1% by mass, more preferably 0.001 to 0.07% by mass, still more preferably 0.001 to 0.05% by mass, and particularly preferably. Is 0.001 to 0.04% by mass.
  • the Mo content is preferably 0.002% by mass or less, more preferably 0.0015% by mass or less, further preferably 0.0012% by mass or less, and particularly preferably 0.0011% by mass or less. Is used.
  • the MgO content is preferably 0.05 to 4.0% by mass, more preferably 0.1 to 3.0% by mass, still more preferably 0.1 to 2.5% by mass, particularly preferably.
  • the R 2 O content is preferably 0.4 to 3.5% by mass, more preferably 0.6 to 3.0% by mass, still more preferably 0.8 to 2.5% by mass, Particularly preferably, 1.0 to 2.0% by mass is used.
  • the hydrocake preferably has a Sr content of 0.1 to 0.8% by mass, more preferably 0.1 to 0.7% by mass, still more preferably 0.1 to 0.6% by mass, and particularly preferably. Is 0.1 to 0.5% by mass.
  • the Mo content is preferably 0.002% by mass or less, more preferably 0.001% by mass or less, still more preferably 0.0005% by mass or less, and particularly preferably 0.0003% by mass or less.
  • the hydrocake has an MgO content of preferably 5.0 to 30% by mass, more preferably 5.0 to 25% by mass, still more preferably 10 to 25% by mass, and particularly preferably 10 to 20% by mass. Is used.
  • the hydrocake preferably has an R 2 O content of 0.02 to 1.5% by mass, more preferably 0.04 to 1.2% by mass, still more preferably 0.06 to 1.0% by mass, Particularly preferably, 0.08 to 0.8% by mass is used.
  • the copper content is preferably 0.005 to 0.05% by mass, more preferably 0.005 to 0.04% by mass, still more preferably 0.005 to 0.03% by mass, and particularly preferably Sr content. Is 0.005 to 0.02% by mass.
  • the Mo content is preferably 0.0002 to 0.8 mass%, more preferably 0.0002 to 0.6 mass%, still more preferably 0.0002 to 0.4 mass%, particularly preferably. Is 0.0002 to 0.3% by mass.
  • the content of MgO is preferably 0.5 to 3.0% by mass, more preferably 0.5 to 2.5% by mass, still more preferably 0.6 to 2.0% by mass, particularly preferably. Is 0.7 to 1.5% by mass.
  • the copper entanglement has an R 2 O content of preferably 0.04 to 2.0% by mass, more preferably 0.06 to 1.8% by mass, still more preferably 0.08 to 1.6% by mass, Particularly preferably, 1.0 to 1.4% by mass is used.
  • the Sr content is preferably 0.001 to 0.03% by mass, more preferably 0.001 to 0.02% by mass, still more preferably 0.001 to 0.015% by mass, and particularly preferably. Is 0.001 to 0.01% by mass.
  • the Mo content is preferably 0.004% by mass or less, more preferably 0.003% by mass or less, still more preferably 0.002% by mass or less, and particularly preferably 0.001% by mass or less. Is used.
  • the MgO content is preferably 0.1 to 3.0% by mass, more preferably 0.15 to 2.0% by mass, still more preferably 0.15 to 1.5% by mass, particularly Preferably 0.2 to 1.5% by mass is used.
  • the R 2 O content is preferably 0.002 to 1.0% by mass, more preferably 0.004 to 0.8% by mass, still more preferably 0.006 to 0.6% by mass, Particularly preferably, 0.008 to 0.4% by mass is used.
  • the cement clinker can be manufactured using an existing cement manufacturing facility such as an SP system (multistage cyclone preheating system) or an NSP system (multistage cyclone preheating system equipped with a calcining furnace).
  • SP system multistage cyclone preheating system
  • NSP system multistage cyclone preheating system equipped with a calcining furnace
  • a sample for quality control is taken at the time of firing the cement clinker, the Sr and Mo contents of the cement clinker of this sample are measured, and based on the Sr and Mo contents in each raw material.
  • the usage ratio (raw material basic unit) of each raw material is adjusted so that the Sr content in the cement clinker is 0.02 to 0.06% by mass and the Mo content is 0.0002 to 0.0023% by mass.
  • coal ash has a relatively high Sr content
  • construction generated soil has a relatively low Sr content.
  • the Sr content in a cement clinker sampled for a sample is less than 0.02% by mass.
  • Mo content in the cement clinker sampled for the sample exceeds 0.0023% by mass, among the iron sources of the cement clinker raw material, the raw material unit of the copper tangled with a relatively high Mo content is used. Reduce and conversely increase the raw material intensity of blast furnace dust.
  • Mo content can be adjusted without changing the mineral composition of a cement clinker by adjusting the raw material basic unit of each raw material used as an iron source among cement clinker raw materials.
  • the MgO content of the cement composition a sample for quality control is taken at the time of firing the cement clinker, the MgO content in the cement clinker of this sample is measured, and based on the MgO content in each raw material.
  • the use ratio (raw material basic unit) of each raw material is adjusted so that the MgO content of the cement composition is 0.7 to 1.8% by mass.
  • blast furnace slag and / or hydrocake has a relatively high MgO content
  • coal ash and / or construction generated soil has a relatively low MgO content.
  • the raw material intensity of blast furnace slag and / or hydrocake is increased, and the raw material intensity of coal ash and / or construction generated soil is reduced.
  • the MgO content in the cement clinker collected for the sample exceeds 1.8% by mass, the raw material intensity of blast furnace slag and / or hydrocake is reduced, and the coal ash and / or construction generated soil Increase raw material intensity.
  • each raw material of the cement clinker is not particularly limited, but it is preferable to pulverize and mix with a raw material pulverization mill or the like, and further to mix with a blending silo.
  • the cement clinker raw material that has been pulverized and mixed can be further fired using a suspension preheater and a rotary kiln, which are existing facilities.
  • the firing conditions such as the firing temperature and firing time of the cement clinker
  • the Sr content becomes 0.02 to 0.06% by mass
  • the Mo content becomes 0.0002 to 0.0023% by mass.
  • a cement clinker for producing the cement composition obtained can be obtained.
  • the firing temperature of the cement clinker is not particularly limited, but when an NSP type cement production facility is used, the temperature of the cement clinker in the vicinity of the rotary kiln outlet is preferably 800 to 1700 ° C, more preferably 900 to 1600 ° C. More preferably, it is 1000 to 1500 ° C.
  • the firing time is 20 minutes to 2 hours, more preferably 30 minutes to 2 hours, and still more preferably 45 minutes to 1.5 hours.
  • the obtained cement clinker is preferably cooled to about 100 to 200 ° C., for example, by a clinker cooler provided on the downstream side of the rotary kiln.
  • the cooling rate is preferably 10 to 60 ° C./min, more preferably 15 to 45 ° C./min, and further preferably 15 to 30 ° C./min.
  • the cooling rate is in the range of 10 to 60 ° C./min, a cement composition capable of producing mortar and concrete having excellent strength development can be obtained.
  • the cement composition is pulverized by mixing cement clinker and gypsum having an Sr content of 0.02 to 0.06 mass% and an Mo content of 0.0002 to 0.0023 mass%. Can be manufactured.
  • the gypsum desirably satisfies the quality specified in JIS R 9151 “Natural gypsum for cement”. Specifically, dihydrate gypsum, hemihydrate gypsum, and insoluble anhydrous gypsum are preferably used.
  • the SO 3 content in the cement composition is compared with the cement clinker having the Sr content of 0.02 to 0.06 mass% and the Mo content of 0.0002 to 0.0023 mass%.
  • pulverization method The method of using classifiers, such as grinders, such as a ball mill, and a separator, is mentioned.
  • the cement clinker content is 95 to 97% by mass with respect to the total mass of the cement composition, and the gypsum content is 3 to 5% by mass.
  • the cement composition may further contain a mixed material.
  • a mixed material blast furnace slag defined by JIS R 5211 “Blast Furnace Cement”, siliceous mixed material defined by JIS R 5212 “Silica Cement”, fly ash defined by JIS A 6201 “Fly Ash for Concrete”.
  • Limestone fine powder can be used.
  • the total content (% by mass) of the mixed material is preferably 5% by mass or less with respect to the total mass of the cement composition. Since the content ratio of the mixed material is as small as 5% by mass or less, even when the mixed material is added, the Sr content, the Mo content, the MgO content, and the R 2 O content of the cement composition are almost affected. Does not reach.
  • the R 2 O content of the cement composition after the pulverization step is preferably 0.3 to 0.6% by mass, preferably 0.3 to 0.6% by mass, more preferably 0.35 to 0.55% by mass. %, More preferably 0.37 to 0.54 mass%, particularly preferably 0.35 to 0.52 mass%.
  • the R 2 O content of the cement composition is obtained by taking a sample for quality control at the time of firing the cement clinker, measuring the R 2 O content in the cement clinker of the sample, By adjusting raw material basic units such as ash, clay, construction generated soil and sewage sludge, the R 2 O content of the cement composition can be within the above range.
  • the brane specific surface area of the cement composition according to this embodiment is preferably 2800 to 4000 cm 2 / g. When the brain specific surface area is within the above range, it is possible to produce mortar or concrete having further excellent strength development.
  • the brane specific surface area of the cement composition is more preferably 3000 to 3800 cm 2 / g, and still more preferably 3000 to 3500 cm 2 / g.
  • cement clinker ingredients As cement clinker raw materials, Sr content, Mo content and MgO content of limestone, meteorite, coal ash, clay, blast furnace slag, construction generated soil, sewage sludge, hydrocake and iron source (copper tangled, blast furnace dust) Measure in advance, and in advance collect a sample for quality control during cement clinker firing, measure the Sr content, Mo content, MgO content and R 2 O content in the cement clinker of this sample, in each raw material Based on the Sr content, Mo content, MgO content and R 2 O content, the Sr content is 0.02 to 0.06 mass%, and the Mo content is 0.0002 to 0.0023.
  • the use ratio (raw material basic unit) of each raw material was adjusted so that a cement clinker having a mass% was obtained.
  • the usage ratio (raw material basic unit) of each raw material was adjusted so that a cement clinker having an MgO content of 0.7 to 1.8% by mass was obtained.
  • the usage ratio (raw material basic unit) of each raw material was adjusted so that a cement clinker having an R 2 O content of 0.3 to 0.6% by mass was obtained.
  • Table 1 shows the Sr content, Mo content, and MgO content of each raw material used in Examples and Comparative Examples.
  • the chemical components and raw material basic units shown below are dry base (water-free state) raw material basic units. In Table 1, “ ⁇ 0.00025” indicates that the Mo content is 0.00025% by mass or less.
  • the use ratio (raw material basic unit) of the cement clinker raw material is adjusted as follows. did.
  • the Sr content of the cement clinker was adjusted by increasing / decreasing the use ratio of coal ash having a high Sr content of 0.106% by mass and construction soil having a low Sr content of 0.0272% by mass.
  • the coal ash was reduced to increase the amount of construction generated soil, and the Sr content of the cement clinker was confirmed while confirming.
  • the Mo content of the cement clinker was adjusted by increasing or decreasing the usage ratio of the blast furnace dust having a Mo content as small as 0.266 mass% and a Mo content as small as 0.001 mass%.
  • the copper tangling was reduced to increase the blast furnace dust, and adjustment was performed while confirming the Mo content of the cement clinker.
  • the MgO content of the cement clinker was adjusted by increasing or decreasing the usage ratio of the blast furnace slag having a high MgO content of 5.12% by mass and the hydrocake having a high MgO content of 14.19% by mass.
  • cement clinker ingredients The basic unit of each raw material used as a cement clinker raw material was limestone 800-1300 kg / t-clinker, meteorite 20-100 kg / t-clinker, coal ash 10-250 kg / t-clinker, clay 0-80 kg / t-clinker, Blast furnace slag 5-50kg / t-clinker, construction generated soil 20-150kg / t-clinker, sewage sludge 0-70kg / t-clinker, hydrocake 20-80kg / t-clinker and iron source 30-60kg / t-clinker (5 to 50 kg / t-clinker from copper tangled, 25 to 55 kg / t-clinker from blast furnace dust).
  • the cement clinker raw material was prepared, and the prepared raw material was baked in an NSP kiln at a maximum temperature of 1200 to 1500 ° C. to produce a cement clinker.
  • the temperature of the cement clinker in the vicinity of the NSP kiln outlet was 1000-1500 ° C.
  • the cement clinker was cooled from 1000-1400 ° C. to 100-200 ° C. at a cooling rate of 10-60 ° C./min with a clinker cooler provided on the downstream side of the rotary kiln.
  • the obtained cement clinker is blended with dihydrate gypsum so that the content of SO 3 in the cement composition is 2% by mass, and further mixed material (limestone, blast furnace slag) is 4% by mass of limestone and 1% by mass of blast furnace slag. And pulverized with an actual mill so that the specific surface area of the brain was 3100 to 3400 cm 2 / g to obtain a cement composition.
  • the standard soft water amount is an amount of water necessary for making the softness (softness) of the cement paste constant, and the larger the amount, the lower the fluidity of the cement.
  • the measuring method is as follows. 500 g of cement composition is put in a kneading bowl, water is added and kneaded, cement paste is put into a container, the surface is smoothed, the standard bar is lowered, and after 30 seconds the standard bar The distance between the tip and the bottom plate was measured, and the amount of water at which the distance was 6 ⁇ 1 mm (standard softness) was measured to obtain the standard soft water amount.
  • the Mo content is less than 0.0023 mass% (specifically, the Mo content is 0.0007 to 0.0022 mass%), and the Sr content is 0.02 to 0.06 mass%.
  • the relationship between the Sr content of the cement compositions of Examples 1 to 4 having an Sr content of 0.0262 to 0.058 mass%) and the compressive strength of the mortar using this cement composition Indicates.
  • FIG. 1 also shows the Sr content of the cement compositions of Comparative Examples 1 to 7 in which the Mo content exceeds 0.0023 mass% and the Sr content is 0.02 to 0.06 mass%. The relationship with the compressive strength of the mortar using a composition is shown.
  • the cement compositions of Examples 1 to 4 had a standard soft water amount (a constant amount of cement paste) compared to the cement compositions of Comparative Examples 1 to 7, although the mortar compressive strength was increased. The amount of water necessary to obtain the softness of the water is maintained, there is no significant difference in fluidity, and the setting time has not changed significantly.

Abstract

L'invention porte sur une composition de ciment qui donne une pâte de ciment, un mortier ou un béton qui, tout en conservant ses propriétés à l'état frais, donne un objet durci ayant une résistance améliorée. L'invention porte également sur un procédé pour la production de la composition de ciment. La composition de ciment a une teneur en Sr de 0,02-0,06 % en masse et une teneur en Mo de 0,0002-0,0023 % en masse. Le procédé pour la production de la composition de ciment comprend : une étape (A) dans laquelle des matières premières choisies parmi la pierre calcaire, la pierre de silice, les cendres de houille, l'argile, les scories de haut-fourneau, la terre produite par des travaux de construction, les boues d'épuration, les gâteaux hydratés et les sources de fer sont mélangées en des proportions ayant pour résultat une composition de ciment ayant une teneur en Sr de 0,02-0,06 % en masse et une teneur en Mo de 0,0002-0,0023 % en masse et les matières premières mélangées en proportions adéquates sont brûlées pour produire des scories de ciment ; et une étape (B) dans laquelle les scories de ciment sont réduites en poudre conjointement avec du gypse et avec de la pierre calcaire et des scories de haut-fourneau sous forme de mélanges.
PCT/JP2011/079222 2011-02-24 2011-12-16 Composition de ciment et son procédé de production WO2012114622A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015081209A (ja) * 2013-10-22 2015-04-27 宇部興産株式会社 低水和熱セメント組成物及びその製造方法
CN112960919A (zh) * 2021-01-28 2021-06-15 成都市嘉瑞云建材有限公司 一种利用洗砂污泥制备水泥混合材料的方法
CN115448622A (zh) * 2022-09-16 2022-12-09 大冶尖峰水泥有限公司 一种利用高硫高镁石灰石生产高强度熟料的方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013107780A (ja) * 2011-11-17 2013-06-06 Taiheiyo Cement Corp セメントクリンカおよびセメント組成物
JP6061080B2 (ja) * 2012-12-28 2017-01-18 三菱マテリアル株式会社 セリウムを含有する水硬性組成物およびその強度低下抑制方法
CN104909587A (zh) * 2015-05-13 2015-09-16 张芳 一种水泥熟料
CN105152593A (zh) * 2015-07-03 2015-12-16 枞阳县天筑新型建筑材料有限公司 一种添加新型防水防潮增效剂的保温砂浆及其制备方法
CN106630738B (zh) * 2016-12-07 2019-08-13 广西金洪混凝土有限公司 高强混凝土掺合料及其制备方法与应用
CN107902928A (zh) * 2017-11-02 2018-04-13 马鞍山市宝奕金属制品工贸有限公司 一种高炉熔渣制备水泥的方法
JP6638842B1 (ja) * 2019-03-29 2020-01-29 住友大阪セメント株式会社 セメント組成物及びセメント組成物の製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007514634A (ja) * 2003-12-18 2007-06-07 ラファルジュ 水硬性無機組成物、その製造方法、並びにそのような組成物を含有するセメント製品および水硬性バインダー
JP2010222171A (ja) * 2009-03-23 2010-10-07 Taiheiyo Cement Corp セメントクリンカ、その製造方法および水硬性セメント
JP2011099730A (ja) * 2009-11-05 2011-05-19 Sumitomo Osaka Cement Co Ltd モルタルあるいはコンクリートの配合推定方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011020890A (ja) * 2009-07-15 2011-02-03 Ube Industries Ltd セメント組成物の水和熱低減方法及びセメント組成物の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007514634A (ja) * 2003-12-18 2007-06-07 ラファルジュ 水硬性無機組成物、その製造方法、並びにそのような組成物を含有するセメント製品および水硬性バインダー
JP2010222171A (ja) * 2009-03-23 2010-10-07 Taiheiyo Cement Corp セメントクリンカ、その製造方法および水硬性セメント
JP2011099730A (ja) * 2009-11-05 2011-05-19 Sumitomo Osaka Cement Co Ltd モルタルあるいはコンクリートの配合推定方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CEMENT NO JOSHIKI, JAPAN CEMENT ASSOCIATION, November 1998 (1998-11-01), pages 13 - 14 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015081209A (ja) * 2013-10-22 2015-04-27 宇部興産株式会社 低水和熱セメント組成物及びその製造方法
CN112960919A (zh) * 2021-01-28 2021-06-15 成都市嘉瑞云建材有限公司 一种利用洗砂污泥制备水泥混合材料的方法
CN115448622A (zh) * 2022-09-16 2022-12-09 大冶尖峰水泥有限公司 一种利用高硫高镁石灰石生产高强度熟料的方法
CN115448622B (zh) * 2022-09-16 2023-09-22 大冶尖峰水泥有限公司 一种利用高硫高镁石灰石生产高强度熟料的方法

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