WO2020195970A1 - セメントクリンカーの製造方法及びセメントクリンカー粉末 - Google Patents
セメントクリンカーの製造方法及びセメントクリンカー粉末 Download PDFInfo
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- WO2020195970A1 WO2020195970A1 PCT/JP2020/011179 JP2020011179W WO2020195970A1 WO 2020195970 A1 WO2020195970 A1 WO 2020195970A1 JP 2020011179 W JP2020011179 W JP 2020011179W WO 2020195970 A1 WO2020195970 A1 WO 2020195970A1
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- Prior art keywords
- cement clinker
- portland cement
- clinker
- cooling
- cement
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000000843 powder Substances 0.000 title claims description 16
- 239000004568 cement Substances 0.000 title abstract description 68
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000011398 Portland cement Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000010304 firing Methods 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000010440 gypsum Substances 0.000 claims description 12
- 229910052602 gypsum Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 9
- 210000004556 brain Anatomy 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 241001504564 Boops boops Species 0.000 abstract 1
- 238000010791 quenching Methods 0.000 description 16
- 230000000171 quenching effect Effects 0.000 description 16
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 description 11
- 239000011707 mineral Substances 0.000 description 11
- 235000010755 mineral Nutrition 0.000 description 11
- 239000002699 waste material Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 239000006227 byproduct Substances 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- 235000012255 calcium oxide Nutrition 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- -1 shells Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/47—Cooling ; Waste heat management
-
- 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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Definitions
- the present invention relates to a method for producing Portland cement clinker, which can be fired at a low temperature and has a high brightness, and the produced cement clinker powder.
- the cement industry is a mass production and mass consumption type industry, and resource saving and energy saving are the most important issues.
- a raw material adjusted to a predetermined chemical composition is calcined at a high temperature of 1450 ° C to 1550 ° C to obtain clinker.
- the firing process is the process that consumes the most energy. That is, if the firing temperature of clinker can be reduced, energy can be reduced.
- a technique for increasing the concentration of C 4 AF (4CaO, Al 2 O 3 , Fe 2 O 3 ), which is a main mineral of clinker has been developed (Patent Document 1).
- waste is effectively used or treated as a raw material or fuel during cement manufacturing. This is effective from the viewpoint of safe and mass disposal of waste.
- Many of the wastes and by-products have a high Al 2 O 3 content, and in the above-mentioned system for increasing C 4 AF, the Al 2 O 3 content of the cement clinker is higher than that of the conventional Portland cement clinker. This makes it possible to use more waste and by-products than conventional Portland cement clinker.
- the clinker described in Patent Document 1 is also excellent in this respect.
- Patent Document 2 a method of using a specific iron source raw material (Patent Document 2) and a method of adding high-brightness powder (Patent Document 3) are known.
- Patent Document 3 a method of adding high-brightness powder
- the present invention can reduce the firing temperature during production as compared with the conventional Portland cement clinker, and further, the method for producing the cement clinker and the produced cement having the same color tone as the conventional Portland cement clinker. It is an object of the present invention to provide clinker powder.
- the present inventors have made diligent studies and found that the brightness of cement clinker can be easily adjusted by controlling the temperature during firing of cement clinker, particularly the temperature drop during cooling and the time.
- the present invention has been completed.
- the total amount of C 3 A and C 4 AF calculated by the Borg formula including the step of cooling the raw material after firing at 1300 to 1400 ° C. is 22 to 40%, and the iron ratio (IM).
- IM iron ratio
- the Portland cement clinker powder of the present invention has a total amount of C 3 A and C 4 AF calculated by the Borg formula of 22 to 40%, an iron ratio (IM) of 0.8 to 1.3, and a brain.
- the specific surface area is 2800 to 4500 cm 2 / g, and the L value in the Lab color system is 50 or more.
- it is a cement clinker that can be calcined at a lower temperature than a conventional Portland cement clinker and can increase the amount of waste and by-products used, and is equivalent to a conventional Portland cement clinker.
- a cement clinker exhibiting lightness is obtained.
- the field of view of the photograph is about 125 ⁇ m ⁇ 90 ⁇ m.
- the field of view of the photograph is about 125 ⁇ m ⁇ 90 ⁇ m.
- the C 3 A, C 4 AF and C 3 S amounts in the present invention are determined by the Borg equation.
- the Borg formula is a formula that is used along with coefficients and ratios to calculate the approximate composition of major compounds using major chemical analysis values, and is a well-known formula to those skilled in the art. As a precaution, the method of calculating the amount of each mineral in the clinker by the Borg formula is described below. The unit of each component is mass%.
- the iron ratio (IM) includes the water hardness ratio (HM), the chemistry ratio (SM), the activity coefficient (AI), and the lime saturation (LSD). In addition, it is obtained using the main chemical component values.
- the iron ratio is a characteristic value for clinker production control, is used as one of the coefficients and ratios, and is a coefficient well known to those skilled in the art. As a precaution, the calculation method of iron rate and the calculation method of other coefficients are described below.
- HM Water hardness
- SM SiO 2 + Al 2 O 3 + Fe 2 O 3
- IM Iron rate
- AI SiO 2 / Al 2 O 3
- Lime saturation CaO / (2.8 ⁇ SiO 2 + 1.2 ⁇ Al 2 O 3 +0.65 ⁇ Fe 2 O 3 )
- CaO, SiO 2 , Al 2 O 3 and Fe 2 O 3 in the above were based on JIS R 5202 "Chemical analysis method of Portland cement” and JIS R 5204 "Fluorescent X-ray analysis method of cement", respectively. It can be measured by the method.
- the total amount of C 3 A and C 4 AF is 22 to 40%. If the total amount of these is less than 22%, it becomes difficult to obtain a cement clinker having good physical properties such as strength development by firing at a temperature of 1300 to 1400 ° C. A more preferable total amount is 24% or more. On the other hand, it is preferable that in order to obtain high strength development as described below is C 3 S is 60% or more. From this point of view, the total amount of C 3 A and C 4 AF shall be 40% or less. It is preferably 35% or less, more preferably 32% or less, and particularly preferably 28% or less. Of these two components, C 4 AF is preferably present in an amount of 15% or more alone in that it can be sufficiently sintered even at a low temperature and the amount of free-CaO in the clinker can be reduced.
- C 3 S content gives a cement composition using the cement clinker of the present invention (hereinafter, simply "cement") of a strong influence on strength development. When this amount is 60% or more, good strength development can be easily obtained.
- C 3 S content is more preferably at least 62%, particularly preferably 63% or more. Since the total amount of C 3 A and C 4 AF described above is at least 22%, the upper limit of the amount of C 3 S is 78%. In order to secure a certain amount of time from the start to the end of condensation, 70% or less is preferable, and 65% or less is more preferable.
- the cement clinker produced in the present invention may further contain C 2 S.
- the amount is 18% or less, preferably 3% or more. From the viewpoint of obtaining a long-term strength, particularly preferably a C 3 S content and the C 2 S content of total 69% or more.
- the iron ratio (IM) of the cement clinker produced in the present invention is 0.8 to 1.3.
- sufficient strength development more specifically, for example, mortar strength development
- the iron ratio is set to 1.3 or less.
- the range of more preferable iron ratio is 1.0 to 1.3, and particularly preferably 1.14 to 1.27.
- the water hardness ratio and the silicic acid ratio are not particularly limited, but the water hardness ratio is preferably 1.8 to 2.2, particularly preferably 1.9, in order to have an excellent balance of various physical properties. It is ⁇ 2.1, and the silicic acid ratio is preferably 1.0 to 2.0, particularly preferably 1.1 to 1.7.
- a known method may be appropriately adopted as a method for preparing and mixing the clinker raw material.
- waste, by-products and other raw materials limestone, burnt lime, CaO source such as slaked lime, SiO 2 source such as silica stone, clay, Al 2 O 3 source, such as coal ash, copper Karami, such as blast furnace slag
- the chemical components of (Fe 2 O 3 source, etc.) are analyzed, the mixing ratio of each raw material is calculated from the ratio of each component in these raw materials so as to satisfy the above-mentioned requirements specified in the present invention, and the raw materials are prepared at that ratio. do it.
- the raw material used in the production method of the present invention is the same as the raw material conventionally used in the production of cement clinker, without particular limitation. Of course, it is also possible to use waste and by-products.
- usable wastes and by-products are blast furnace slag, steelmaking slag, manganese slag, coal ash, sewage sludge, purified water sludge, paper sludge, construction soil, casting sand, soot and dust, incineration fly ash, and melt fly ash.
- examples include ash, chlorine bypass dust, wood, waste white clay, slag, waste tires, shells, garbage and its incineration ash.
- a mixture of raw materials as described above is fired by a firing device (for example, SP kiln, NSP kiln, etc.) at a firing temperature of around 1450 ° C. for a predetermined time, and then immediately cooled by a so-called clinker cooler. It is usually rapidly cooled to around 200 ° C. by a device (blower, sprinkler, etc.) at a cooling rate of 100 ° C./min or more.
- a firing device for example, SP kiln, NSP kiln, etc.
- the firing temperature is 1300. Since the temperature can be as low as ⁇ 1400 ° C., energy saving can be achieved.
- the cement clinker having the above composition tends to have a lower brightness (L value in the Lab color system) than the standard Portland cement clinker, and L is usually less than 50, and in many cases less than 48.
- the cooling rate switching temperature may be selected and set from the range of 1200 ° C. to 1000 ° C. in consideration of both factors as appropriate.
- the cement clinker produced by the production method of the present invention can be made into cement by crushing it together with gypsum or crushing it individually and then mixing it in the same manner as the conventionally known cement clinker.
- the cement include ordinary Portland cement, early-strength Portland cement, and ultra-early-strength Portland cement.
- Portland cement it can also be used as a constituent of various mixed cements and solidifying materials such as soil solidifying materials.
- gypsum When gypsum is added to form cement, gypsum known as a raw material for cement production, such as dihydrate gypsum, semi-water gypsum, and anhydrous gypsum, can be used without particular limitation.
- the amount of gypsum added is preferably such that the amount of SO 3 in the cement is 1.5 to 5.0% by mass, and the amount of gypsum is added so as to be 1.8 to 3% by mass. Is more preferable.
- known techniques can be used without particular limitation.
- the cement may be mixed and crushed by appropriately adding a mixed material such as blast furnace slag, siliceous mixed material, fly ash, calcium carbonate and limestone and a crushing aid, or mixed with the mixed material after crushing. Good. These additives may be added together with gypsum or separately from gypsum. Further, chlorine bypass dust or the like may be mixed.
- a mixed material such as blast furnace slag, siliceous mixed material, fly ash, calcium carbonate and limestone and a crushing aid, or mixed with the mixed material after crushing. Good.
- the degree of powderiness of the cement is not particularly limited, but it is preferable to adjust the specific surface area of the brain to 2800 to 4500 cm 2 / g.
- the cement clinker obtained by the production method of the present invention has a brightness of 50 or more, and as described above, if the quenching start temperature is lowered, the brightness becomes 52 or more. It is also possible to. On the other hand, most are 55 or less.
- a Portland cement clinker in the range of 4500 cm 2 / g and having an L value of 50 or more in the Lab color system can be manufactured for the first time by the manufacturing method of the present invention.
- the Portland cement clinker obtained by the production method of the present invention can be further mixed with blast furnace slag, fly ash, etc. after crushing to obtain blast furnace slag cement, fly ash cement, etc., if necessary.
- the reference example is an example showing the result of firing a conventional Portland cement clinker having a standard composition at 1450 ° C. and quenching from the 1450 ° C. at a general cooling rate exceeding 100 ° C./min.
- Comparative Example 1 a cement clinker having a composition capable of firing at a low temperature with a total amount of C 3 A and C 4 AF of 26% and an iron ratio of 1.21 was fired at 1350 ° C., and from 1350 ° C. to 100 ° C. This is an example showing the result of quenching at a general cooling rate exceeding / minute.
- Examples 1 and 2 relate to the present invention, and the raw materials are prepared so as to have the same composition as that of Comparative Example 1, and after firing at 1350 ° C., the temperature lowering rate is 1 minute per 20 ° C. This is an example in which cooling is performed with the air, and then the air is rapidly cooled at a general cooling rate exceeding 100 ° C./min.
- the cement produced by the production method of the present invention contains a large amount of iron components and can be fired at a low temperature, but has the same brightness as the conventional Portland cement clinker shown in the reference example.
- FIGS. 1 and 3 show the mineral structure of the cement clinker powder corresponding to Example 1
- FIG. 1 shows the C 2 S structure
- FIG. 3 shows the structure of the interstitial phases C 3 A and C 4 AF
- 2 and 4 show the mineral structure of the cement clinker powder corresponding to Comparative Example 1
- FIG. 2 shows the C 2 S structure
- FIG. 4 shows the structure of the interstitial phases C 3 A and C 4 AF.
- the portion extending from the upper part to the lower part of the central portion of FIG. 1 is a hole.
- the white structure occupying the gap between the particles is the gap phase.
- the gray structure in the gap between the particles is the gap phase
- the dark part is the C 4 AF structure
- the bright part is the C 3 A structure.
- FIG. 1 gradually cooled, C 2 size S particles is less than 2, it can be seen that also changes the shape of the particles.
- firing is performed in a rotary kiln, for example, and decooling and quenching are performed in a clinker cooler, for example.
- the clinker cooler is configured in multiple stages, for example, and cooling is performed in, for example, the first stage or the first stage and the second stage, and the cooling rate is reduced to 20 ° C./min or less by reducing or reducing the amount of air blown to the first stage or the like. ..
- the temperature lowering rate during cold removal is preferably 20 ° C./min or less and 5 ° C./min or more.
- Quenching means, for example, cooling at a rate of 40 ° C./min or more and 500 ° C./min or less, and preferably 100 ° C./min or more and 500 ° C./min or less.
- To measure the cement clinker temperature during cooling and quenching for example, use a radiation thermometer to measure the temperature of the clinker in the clinker cooler at multiple positions and determine the moving speed of the cement clinker in the clinker cooler. Use to convert to temperature drop rate.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
C2S量 =(2.87×SiO2)―(0.754×C3S)
C3A量 =(2.65×Al2O3)―(1.69×Fe2O3)
C4AF量=3.04×Fe2O3
ケイ酸率(S.M.) = SiO2/(Al2O3+Fe2O3)
鉄率(I.M.) = Al2O3/Fe2O3
活動係数(A.I.) = SiO2/Al2O3
石灰飽和度(L.S.D.)= CaO/(2.8×SiO2+1.2×Al2O3+0.65×Fe2O3)
* 参考例は最高温度の1450℃から急冷、比較例1は最高温度の1350℃から急冷、
* 実施例1,2では、最高温度の1350℃から1200℃または1100℃まで20℃/分で除冷後、急冷。
Claims (4)
- 原料を1300~1400℃で焼成後に冷却する工程を含む、ボーグ式により算出されるC3AとC4AFの合計量が22~40%、鉄率(I.M.)が0.8~1.3のポルトランドセメントクリンカーの製造方法であって、
前記冷却を、少なくとも1200℃に到達するまでは20℃/分以下の降温速度とするとともに、低くても1000℃以下では急冷することを特徴とするポルトランドセメントクリンカーの製造方法。 - ポルトランドセメントクリンカーを製造した後、該ポルトランドセメントクリンカーを石膏と共に粉砕するか、或いは粉砕後に石膏と混合することを特徴とする、請求項1記載のポルトランドセメントの製造方法。
- 該ポルトランドセメントクリンカーに更に、高炉スラグ、石灰石、フライアッシュ及び/又はシリカ質混合材を混合することを特徴とする、請求項2記載のポルトランドセメントの製造方法。
- ボーグ式により算出されるC3AとC4AFの合計量が22~40%、鉄率(I.M.)が0.8~1.3、ブレーン比表面積が2800~4500cm2/gであり、Lab表色系でのL値が50以上であるポルトランドセメントクリンカー粉末。
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EP20775808.7A EP3950635A4 (en) | 2019-03-27 | 2020-03-13 | CLINKER MANUFACTURING PROCESS AND CLINKER POWDER |
SG11202109028RA SG11202109028RA (en) | 2019-03-27 | 2020-03-13 | Production method for cement clinker and cement clinker powder |
JP2021509056A JP7361097B2 (ja) | 2019-03-27 | 2020-03-13 | セメントクリンカーの製造方法及びセメントクリンカー粉末 |
US17/442,658 US20220169566A1 (en) | 2019-03-27 | 2020-03-13 | Production method for cement clinker and cement clinker powder |
AU2020246114A AU2020246114B2 (en) | 2019-03-27 | 2020-03-13 | Production method for cement clinker and cement clinker powder |
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CN116573869B (zh) * | 2023-05-26 | 2024-05-28 | 安徽建筑大学 | 一种利用矿渣废料生产水泥熟料的方法 |
Citations (5)
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JP2009084105A (ja) * | 2007-09-28 | 2009-04-23 | Sumitomo Osaka Cement Co Ltd | セメントクリンカー及びその製造方法 |
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JPWO2020195970A1 (ja) | 2020-10-01 |
EP3950635A1 (en) | 2022-02-09 |
JP7361097B2 (ja) | 2023-10-13 |
EP3950635A4 (en) | 2022-12-28 |
SG11202109028RA (en) | 2021-09-29 |
US20220169566A1 (en) | 2022-06-02 |
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AU2020246114B2 (en) | 2023-12-21 |
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