CN1176945A - 特种抗硫酸盐水泥及其生产方法 - Google Patents
特种抗硫酸盐水泥及其生产方法 Download PDFInfo
- Publication number
- CN1176945A CN1176945A CN96118342A CN96118342A CN1176945A CN 1176945 A CN1176945 A CN 1176945A CN 96118342 A CN96118342 A CN 96118342A CN 96118342 A CN96118342 A CN 96118342A CN 1176945 A CN1176945 A CN 1176945A
- Authority
- CN
- China
- Prior art keywords
- sulfate
- cement
- special
- clinker
- caso
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004568 cement Substances 0.000 title claims abstract description 60
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229910052925 anhydrite Inorganic materials 0.000 claims abstract description 24
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000010881 fly ash Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000002956 ash Substances 0.000 claims abstract description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000003245 coal Substances 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 15
- 239000011707 mineral Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 229910052602 gypsum Inorganic materials 0.000 claims description 7
- 239000010440 gypsum Substances 0.000 claims description 7
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 3
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 2
- 229910001653 ettringite Inorganic materials 0.000 abstract description 17
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000001354 calcination Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 8
- 229910052791 calcium Inorganic materials 0.000 description 8
- 239000002002 slurry Substances 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 4
- 229920006576 PP-G Polymers 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 150000004645 aluminates Chemical class 0.000 description 2
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 208000000419 Chronic Hepatitis B Diseases 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 208000002672 hepatitis B Diseases 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009941 weaving Methods 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- 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
- C04B11/00—Calcium sulfate 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
- 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
-
- 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
- C04B7/42—Active ingredients added before, or during, the burning process
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2015—Sulfate resistance
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
特种抗硫酸盐水泥及其生产方法,它首先烧制含有C4AsS的硅酸盐熟料,然后将熟料与可溶性CaSO4、KAl(SO4)2或再加上矿渣、火山灰、粉煤灰、煤矸石中的一种或两种,按一定的比例粉磨,配制成品。本产品的化学机理是能在混凝土的塑性阶段与硬化弹性极限内,完成CaO、CaSO4、C4A3S转化成钙矾石的反应,不但没有造成破坏,反而增强了水泥石的密实度,提高了水泥石的强度和抗腐蚀与抗渗性能。本发明生产成本低,产品质量好,尤其适合我国众多的立窑水泥厂生产。
Description
本发明涉及一种水泥及其生产方法
众所周知,在抗硫酸盐水泥熟料中,硫酸盐浸蚀主要是Ca(OH)2和C3A引起的。Ca(OH)2是由fcao水解时生成,它和C3S在浸蚀性溶液中生成石膏,体积增加2.24倍;石膏继续与C3A反应生成硫铝酸钙(钙矾石),体积增加2.68倍,均能引起水泥石的破坏性膨胀,它们的化学反应方程如下:
因此,国家标准GB748-83抗硫酸盐水泥规定,抗硫酸盐水泥熟料的矿物组成要求如下:
C3S≤50% C3A≤5% C3A+C4AF≤22%
Loss≤1.5% fcao≤1.0% MgO≤4.5% SO3≤2.5%
按照上述国家标准生产出来的抗硫酸盐水泥,不但成本高,其抗硫酸盐腐蚀性能仍然不理想,更不能在我国众多的机立窑水泥厂生产。因为GB748-83抗硫酸盐水泥的抗腐蚀性能主要是靠降低C3A、C3S和fcao的含量来达到目的,而不是采用使其转化的方法。
本发明的目的是提供特种抗硫酸盐水泥及其生产方法,做到生产成本低,抗硫酸盐腐蚀性能好,还能适应机立窑生产。
本发明的目的是这样实现的:在利用机立窑生产硅酸盐熟料时,在生料中加入一定量的含硫矿物(石膏或硫铁矿);生料经煅烧后使其生成含有C4A3
S为4-12%的特种硅酸盐熟料或者同时加入一定量的含CaF2矿物,使其生成含有C4A3
S+C11A7CaF2为4~12%的特种硅酸盐熟料。将此熟料与可溶性CaSO4、KAl(SO4)2或再加上矿渣、粉煤灰、火山灰、煤矸石的一种或两种按一定比例配制并经粉磨、包装成成品,即可制得一系列特种抗硫酸盐水泥。在用转窑生产硅酸盐熟料时,因其fCao可以比立窑降低2%左右,其熟料中的C4A3
S含量或C4A3
S+C11A7CaF2含量可以降至4~8%。
本发明的理论依据和化学反应的机理如下:
最新研究和实验资料证明:高硫铝酸钙(钙矾石)具有稳定性和膨胀性的特点,在干燥、潮湿、低温等各种恶劣条件下,钙矾石晶体都难以破坏,并且与水泥中的其它矿物(C3S、C2S、C4AF)配合能产生较高的强度。另外,可控制钙矾石在水泥中的含量而使砼具有微膨胀性,从而增加砼的抗渗性和抗腐蚀性。钙矾石的溶解度很小,抗碱和抗海水浸蚀能力较强,是较好的抗硫酸盐浸蚀的矿物。
本熟料因在生产过程中加入适量的CaSO4或FeS2,因此在1000℃时就形成了C4A3
S矿物,而不生成C3A。水泥熟料中的C4A3
S在水化水解过程中,能与Ca(OH)2和CaSO4作用生成钙矾石;同时,水泥中的KAl(SO4)2也能与Ca(OH)2和CaSO4生成钙矾石,并能促进含铝矿物的溶解反应。
因此,本水泥在砼的塑性阶段至硬化后的弹性极限内,砼内的C4A3
S、Ca(OH)2与CaSO4基本都能转化成钙矾石,从而消除了硫酸盐浸蚀破坏的根源。并且,在液相中形成较细的钙矾石晶体分布于砂浆中,互相交替、搭接而形成硬化浆体的初期骨架,与此同时,水泥中的水化硅酸盐和铝酸盐凝胶填充其间,二者硬化使水泥浆体获得初期强度,以后继续水化后形成坚硬的水泥石。
由于液相中CaO的浓度较高(PH≥12),在形成上述形态的水化硫铝酸钙时,尚有一部份硫铝酸钙的细针状态聚集围绕在原料的颗粒表面,呈放射状态,具有膨胀性能产生应力。细针状的水化硫铝酸钙能填充水泥浆体中的空隙和破坏毛细管,被同时生成的非膨胀的水化铝酸钙和水化硅酸钙所吸收。因此,细针状的硫铝酸钙的膨胀对砼不但无破坏作用,相反对浆体起密实作用,增加了砼的抗渗性能,防止海水渗入砼内。
本发明的化学反应如下:
因熟料、可溶性CaSO4、KAl(SO4)2都是经过锻烧,具有一定的热焓和化学活性,所以,在搅拌的水泥砂浆或砼中,含有C4A3
S的硅酸盐熟料迅速水解,可溶性CaSO4迅速溶於水中;KAl(SO4)2也同时迅速溶於水中,并发生如下化学反应:
从化学反应(4)、(5)、(6)式可知:2KAl(SO4)2可将7CaO转化成钙矾石,因此下式成立。
(2×258.1)÷0.3%=(7×56)÷CaO%
式中0.3%是KAl(SO4)2加入量,258.1是其分子量,56是CaO分子量。所以
从化学反应(4)、(7)式可知:1个C4A3
S可将6CaO转化成钙矾石,因此下式成立。
610.27÷12%=(6×56)÷CaO%
式中12%是C4A3
S在机立窑熟料中的含量,610.27是其分子量。所以
此即说明加入0.3%的KAl(SO4)2和熟料中的12%C4A3
S总共可将6.84%的CaO转化成钙钒石,这除了能转化立窑熟料中高达3%的游离钙外,还可能转化从C3S水解出的CaO。同时,在可溶性CaSO4加入适量的情况下,熟料中的C4A3
S也全部转化钙矾石。
因此,在砼的塑性阶段至硬化的弹性极限内,经过计算配合的各种矿物完成上述反应后能使砼的残余Ca(OH)2与C3A减少至最少限度,从而使砼具有很好的抗硫酸盐浸蚀性能和较高的强度。
本发明的生产步骤如下:
1、在硅酸盐水泥生料中加入一定量的含硫矿物或同时加入含CaF2矿物用常规方法烧制含C4A3
S或含C4A3
S+C11A7CaF2为4-12%的特种硅酸盐熟料。
2、将KAl(SO4)2.12H2O经300-600℃的温度灼烧脱水处理成KAl(SO4)2
3、将CaSO4.2H2O经200-300℃的温度灼烧脱水处理成可溶性CaSO4
4、将熟料与KAl(SO4)2、可溶性CaSO4或再加上矿渣、火山灰、粉煤灰、煤矸石中的一种或两种按一定的比例配制并经粉磨,包装成成品。
各组分的重量百分比如下:
特种硅酸盐熟料 65-95.7%
可溶性CaSO4 3-8%
KAl(SO4)2 0.3%
其余或为矿渣、火山灰、粉煤灰、煤矸石中的一种或两种。在生产过程中,可以用半水石膏CaSO4.1/2H2O代替可溶性CaSO4,还可将K2O.3Al2O3·4SO4·6H2O经300-600℃的温度灼烧脱水处理形成的K2O·3Al2O3·4SO4代替KAl(SO4)2,其重量配比相应提高到5%
实施例一、特种抗硫酸盐水泥(PI-G型)按上述生产步骤准备原料,配制成品,各组分的重量百分比如下:
特种硅酸盐熟料 95.7%, KAl(SO4)2 0.3%
可溶性CaSO4 4.0%
实施例二、特种抗硫酸盐水泥 (PII-G型)生产步骤同上,各组分的重量百分比如下:
特种硅酸盐熟料 87%, K2O.3Al2O3.4SO4 5%
可溶性CaSO4 3%, 矿渣 5%
实施例三、特种抗硫酸盐水泥(PO-G型)生产步骤同上,各组分的重量百分比如下
特种硅酸盐熟料 79.7%, KAl(SO4)2 0.3%
可溶性CaSO4 5.0%, 矿渣 8%
煤矸石 7.0%
实施例四、特种抗硫酸盐矿渣水泥(PS-G型)生产步骤同上,各组分的重量百分比如下:
特种硅酸盐熟料 65%, KAl(SO4)2 0.3%
可溶性CaSO4 8%, 矿渣 26.7%
实施例五、特种抗硫酸盐火山灰水泥(PP-G型)生产步骤同上,各组分的重量百分比如下:
特种硅酸盐熟料 66%, KAl(SO4)2 0.3%
可溶性CaSO4 8%, 火山灰 25.7%
实施例六,特种抗硫酸盐粉煤灰水泥(PF-G型)生产步骤同上,各组分的重量百分比如下:
特种硅酸盐熟料 66.7% KAl(SO4)2 0.3%
可溶性CaSO4 8% 粉煤灰 25%
在以上6个实施例中:PI、PII、PO、PS、PP、PF分别为现行国标统一规定的硅酸盐水泥、普通水泥、矿渣水泥、火山灰水泥和粉煤灰水泥的代号;PI-G、PII-G、PO-G、PS-G、PP-G、PF-G分别代表6个相应类型实施例的特种抗硫酸盐水泥的代号。
在说明书表中,表1为6个实施例的全部物理性能,从表1可知本水泥具有很好的抗硫酸盐浸蚀性能和强度。从本水泥样品3d和7d的XRD分析来看,水泥中CaSO4.2H2O、Ca(OH)2两种矿物含量甚少,而钙矾石AFt含量较多,还有一小部份AFm,没有发现C3AH6矿物。
过去总认为半水石膏是使水泥产生急凝与假凝的因素,实践证明当半水石膏(或可溶性无水石膏)掺入量大于3%时,完全可使凝结时间正常。另外,掺入0.3%的KAl(SO4)2只相当于水泥中增加0.0604的K2O,不会引起碱集反应。
总之,本发明水泥的要点是使Ca(OH)2、CaSO4.2H2O与C4A3
S在水泥石的破坏性极限强度内基本转化成AFt与一小部分AFm,不致使水泥石硬化后产生破坏性膨胀。因而使本水泥有较高的强度和抗硫酸盐腐蚀性能。同时,本水泥可以代替同类型的五大水泥使用,而又优于五大水泥。更可贵的是能在我国众多的立窑水泥厂生产。
表1
编号 | 实施例类型 | 水泥细度% | 水泥比表面积m2/kg | 凝结时间h∶s | 抗折强度Mpa | 抗压强度Mpa | 标准稠度% | 安定性 | SO3% | 烧失量% | 抗腐蚀系数F6 | |||||
初凝 | 终凝 | 3d | 7d | 28d | 3d | 7d | 28d | |||||||||
1 | PI-G | 3.2. | 3460 | 1∶20 | 2∶55 | 6.0 | 8.5 | 37.5 | 60.5 | 25.5 | 合格 | 2.9 | 1.5 | 0.85 | ||
2 | PII-G | 3.4 | 3470 | 1∶50 | 4∶50 | 5.8 | 8.6 | 35.5 | 59.0 | 27.0 | 合格 | 3.2 | 1.4 | 0.86 | ||
3 | PO-G | 2.8 | 3400 | 2∶30 | 5∶10 | 5.6 | 8.4 | 33.1 | 56.7 | 27.5 | 合格 | 3.3 | 2.8 | 0.87 | ||
4 | PS-G | 3.4 | 3240 | 2∶45 | 6∶00 | 5.0 | 6.0 | 8.2 | 30.0 | 41.6 | 55.3 | 26.1 | 合格 | 3.9 | 3.5 | 0.87 |
5 | PP-G | 2.6 | 3500 | 2∶55 | 7∶10 | 5.1 | 5.9 | 8.5 | 29.0 | 39.0 | 48.7 | 25.8 | 合格 | 3.5 | 3.8 | 0.95 |
6 | PF-G | 2.2 | 3500 | 3∶50 | 8∶00 | 4.8 | 5.7 | 8.1 | 27.0 | 38.5 | 47.4 | 26.6 | 合格 | 3.4 | 4.5 | 0.98 |
Claims (8)
1、特种抗硫酸盐水泥生产方法,其特征在于生产步骤如下:
a、在硅酸盐水泥生料中加入一定量的含硫矿物或同时加入含CaFa2矿物,用常规方法烧制含C4A3
S或含C4A3
S+C11A7CaF2为4~12%的特种硅酸盐熟料,
b、将KAl(SO4)2·12H2O经300~600℃温度灼浇脱水处理成KAl(SO4)2,
c、将CaSO4·2H2O经200~300℃温度灼烧脱水处理成可溶性CaSO4,
d、将熟料与KAl(SO4)2、可溶性CaSO4或再加上矿渣、火山灰、粉煤灰、煤矸石中的一种或两种按一定的比例配制并经粉磨,包装成成品。
2、根据权利要求1所述的特种抗硫酸盐水泥生产方法,其特征在于可用半水石膏CaSO4·1/2H2O代替可溶性CaSO4 。
3、根据权利要求1所述的特种抗硫酸盐水泥生产方法,其特征在于可以将K2O·3Al2O·4SO4·6H2O经300~600℃温度灼烧脱水处理形成的K2O·3Al2O·4SO4代替KAl(SO4)2。
4、根据权利要求1所述的特种抗硫酸盐水泥生产方法,其特征在于用转窑生产硅酸盐熟料时,熟料中C4A3
S或C4A3
S+C11A7CaF2的含量为4~8%。
5、特种抗硫酸盐水泥,其特征在于各组份的重量百分比如下:
特种硅酸盐熟料 65~95.7%
可溶性CaSO4 3~8%
KAl(SO4)2 0.3%
其余或为矿渣、火山灰、粉煤灰、煤矸石中的一种或两种。
6、根据权利要求5所述的特种抗硫酸盐水泥,其特征在于特种硅酸盐熟料中C4A3
S含量或C4A3
S+C11A7CaF2含量为4~12%。
7、根据权利要求5所述的特种抗硫酸盐水泥,其特征在于可溶性CaSO4可用半水石膏代替。
8、根据权利要求5所述的特种抗硫酸盐水泥,其特征在于KAl(SO4)2可用K2O·3Al2O3·4SO4代替,其重量配比相应提高到5%。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN96118342A CN1084308C (zh) | 1996-09-14 | 1996-09-14 | 特种抗硫酸盐水泥及其生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN96118342A CN1084308C (zh) | 1996-09-14 | 1996-09-14 | 特种抗硫酸盐水泥及其生产方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1176945A true CN1176945A (zh) | 1998-03-25 |
CN1084308C CN1084308C (zh) | 2002-05-08 |
Family
ID=5125011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96118342A Expired - Fee Related CN1084308C (zh) | 1996-09-14 | 1996-09-14 | 特种抗硫酸盐水泥及其生产方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1084308C (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103344540A (zh) * | 2013-06-28 | 2013-10-09 | 武汉理工大学 | 一种连续表征水泥石密实度的装置及测试方法 |
CN106542751A (zh) * | 2016-11-26 | 2017-03-29 | 烟台大学 | 一种抗硫酸盐水泥及其生产方法 |
CN108164162A (zh) * | 2018-01-17 | 2018-06-15 | 浙江汇新新能源科技有限公司 | 一种水泥砂浆的抗侵蚀材料及其制造方法 |
CN110997591A (zh) * | 2017-05-29 | 2020-04-10 | 拉维·康德·阿哈拉瓦特 | 制造水泥的方法 |
-
1996
- 1996-09-14 CN CN96118342A patent/CN1084308C/zh not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103344540A (zh) * | 2013-06-28 | 2013-10-09 | 武汉理工大学 | 一种连续表征水泥石密实度的装置及测试方法 |
CN103344540B (zh) * | 2013-06-28 | 2016-02-03 | 武汉理工大学 | 一种连续表征水泥石密实度的测试方法 |
CN106542751A (zh) * | 2016-11-26 | 2017-03-29 | 烟台大学 | 一种抗硫酸盐水泥及其生产方法 |
CN106542751B (zh) * | 2016-11-26 | 2019-02-26 | 烟台大学 | 一种抗硫酸盐水泥及其生产方法 |
CN110997591A (zh) * | 2017-05-29 | 2020-04-10 | 拉维·康德·阿哈拉瓦特 | 制造水泥的方法 |
CN108164162A (zh) * | 2018-01-17 | 2018-06-15 | 浙江汇新新能源科技有限公司 | 一种水泥砂浆的抗侵蚀材料及其制造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1084308C (zh) | 2002-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5091519B2 (ja) | ジオポリマー組成物及びその製造方法 | |
EP2389345B1 (en) | Tailored geopolymer composite binders for cement and concrete applications | |
KR101787416B1 (ko) | 고비중 광물 미분과 유동층상 보일러 석탄회를 포함하는 자기 경화형 인공골재 및 그의 제조방법 | |
Wang et al. | An investigation on the anti-water properties of phosphorus building gypsum (PBG)-based mortar | |
CN1028088C (zh) | 水泥砂浆或混凝土的抗侵蚀材料 | |
EP0140156B1 (en) | A process for producing a hardened product of coal ash | |
CN1640843A (zh) | 以脱硫灰渣为缓凝剂的水泥的制造方法 | |
KR101917144B1 (ko) | 순환 유동층 보일러 애시를 함유한 자기치유형 인공 잔골재, 그의 제조방법 및 그를 이용한 자기치유 콘크리트 | |
CN117567054A (zh) | 一种矿渣硫铝酸盐水泥及其生产方法 | |
CN1176945A (zh) | 特种抗硫酸盐水泥及其生产方法 | |
CN1076672A (zh) | 低熟料活性混合材水泥 | |
CN100344569C (zh) | 广谱抗硫胶凝材料及其制备方法 | |
KR20150119624A (ko) | 비소성 결합재를 활용한 친환경 모르타르 조성물 | |
Kandeel et al. | Effect of type of mixing water and sand on the physico–mechanical properties of magnesia cement masonry units | |
CN115417632A (zh) | 一种磷石膏预制混凝土的制备方法 | |
KR102146455B1 (ko) | 고로슬래그 기반 조성물 및 이의 경화체 | |
CN1267372C (zh) | 一种煤矸石活性混合材、其制备方法以及一种高性能水泥 | |
JP2754138B2 (ja) | セメント、その製造方法及びこれを含有する地盤改良材 | |
KR102014282B1 (ko) | 고비중 광물 미분과 유동층상 보일러 석탄회를 포함하는 흡수율 및 비중이 개선된 인공골재 조성물, 그를 사용하여 제조된 인공골재, 및 그의 제조방법 | |
CN1020890C (zh) | 硅铝酸盐混凝土膨胀剂 | |
KR100473642B1 (ko) | 철강부산물과 부산석고를 이용한 알루미나질 클링커 및시멘트 제조방법 | |
CN1061952C (zh) | 高水速凝单浆料 | |
KR20050011922A (ko) | 시멘트 모르타르용 균열 방지제 조성물 | |
Darweesh et al. | Specific characteristics and microstructure of Portland cement pastes containing wheat straw ash (WSA) | |
CN116535158B (zh) | 抗侵蚀高石灰石掺量高延性水泥基复合材料及其制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |