CN116217194A - 一种自流平水泥组合物 - Google Patents
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- 239000004568 cement Substances 0.000 title claims abstract description 47
- 239000000203 mixture Substances 0.000 title claims abstract description 13
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 33
- 238000005065 mining Methods 0.000 claims abstract description 18
- 239000010878 waste rock Substances 0.000 claims abstract description 16
- 239000010440 gypsum Substances 0.000 claims abstract description 15
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 235000021317 phosphate Nutrition 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- XGCDHPDIERKJPT-UHFFFAOYSA-N [F].[S] Chemical compound [F].[S] XGCDHPDIERKJPT-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 150000004760 silicates Chemical class 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- -1 fluorgypsum Chemical compound 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method 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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明涉及自流平水泥生产技术领域，特别是一种自流平水泥组合物，包括水泥熟料65.5～70份、脱硫石膏3～4份、磷石膏1.5～2份、粉煤灰5～7份、采矿废石12～18份；其有益效果在于，水泥具有和易性好、外加剂适应性强特点；通过磷石膏脱硫石膏、采矿废石、水泥熟料进行合理配料调整，生产自流平水泥的同时，消耗大量的磷石膏、采矿废石，实现废渣的综合利用。
Description
技术领域
本发明涉及自流平水泥生产技术领域，尤其是一种自流平水泥组合物。
背景技术
水泥与混凝土外加剂适应性问题一直困扰着水泥企业，通过改善水泥矿物成分，改善水泥中石膏的形态，从而改善水泥与混凝土外加剂适应性。目前己经知道，所有的普通减水剂，如木钙、木镁、木钠、糖蜜、糖钙、糖镁等对水泥所使用的石膏调凝剂中的无水石膏、硬石膏、萤石膏、镁石膏、工业膏渣、半水石膏、脱水石膏均存在化学上的不适应。另外，铝酸三钙越高外加剂剂量适应性越差，由于其强大的吸附能力，几乎对所有的(高效)减水剂都存在剂量不适应问题。
磷石膏在我国综合利用率较低，磷石膏仅仅作为一种危险固体废物来对待，由于我国天然石膏和脱硫石膏资源丰富而忽略了磷石膏的综合利用，使得磷石膏价格相对低30份多，做好磷石膏利用工作，促进我国固废可持续发展同时降低企业生产成本。
某些矿山存有大量石灰石，CaO含量在38～43份之间，达不到使用条件，造成大量采矿废石堆存在废渣场，造成大量土地被毁，还需要进行治理，造成资源较大浪费。
利用矿山采矿废石代替水泥中非活性混合材料，改善水泥矿物成分同时有利于矿山资源综合利用，减少排废量，增加矿山使用年限。
基于此，亟需一种利用矿山采矿废石代替水泥中非活性混合材料，改善水泥矿物成分同时有利于矿山资源综合利用，减少排废量，增加矿山使用年限。
发明内容
本发明的目的是提供一种自流平水泥组合物，解决现有技术中的问题。
本发明公开了一种自流平水泥组合物，以质量分数计，包括水泥熟料65.5～70份、脱硫石膏3～4份、磷石膏1.5～2份、粉煤灰5～7份、采矿废石12～18份；
所述熟料、磷石膏与脱硫石膏搭配使用和所述粉煤灰、采矿废石按照比例要求进行粉磨，控制该水泥中所述SO3质量百分数为2～3份；
所述采矿废石化学成分为：
LOI 27.76～30.81份、SiO2 22.25～25.25份、Al2O3 5.09～7.25份、Fe2O33.13～4.25份、CaO 32.95～37.95份、MgO 2.62～3.95份、水0.50～6.00份；
所述磷石膏化学成分为：
LOI 16.09～19.80份、SiO2 8.14～9.80份、Al2O3 2.35～2.80份、Fe2O3 1.57～1.98份、CaO 29.26～30.80份、MgO 0.43～1.48份、SO3 38.11～43.82份、水0.50～6.00份。
进一步地，所述磷石膏容重0.733～0.88g/cm3。
进一步地，所述磷石膏主要成分为二水硫酸钙，所述磷石膏中所述二水硫酸钙质量百分数70～90份。
其中所含的次要成分随磷矿石产地不同而各异，一般都含有岩石成分Ca、Mg的磷酸盐及硅酸盐。
进一步地，所述二水硫酸钙分解后形成含Ca或Mg的化合物。
进一步地，所述磷石膏还含有机磷和硫氟类化合物。
本发明的有益效果在于：
1、水泥具有和易性好、外加剂适应性强特点；
2、通过磷石膏脱硫石膏、采矿废石、水泥熟料进行合理配料调整，生产自流平水泥的同时，消耗大量的磷石膏、采矿废石，实现废渣的综合利用。
具体实施方式
下面结合实施例对本发明的具体实施方式作进一步描述，以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
实施例1-3
一种自流平水泥组合物，熟料、磷石膏、脱硫石膏和采矿废石、粉煤灰按照比例要求进行粉磨，比例要求见表1-3。控制该硅酸盐水泥中SO3质量百分数为2％-3％，比表面积大于等于380m2/kg，凝结时间200-750min，水泥净浆流动度240-280MM。
表1流平水泥组分及控制技术要求表
表2自流平水泥主要指标
表3磷石膏以及采矿废石的主要成分
为了验证本发明的有益效果，特对实施例1-3进行如下检测：
1、化学分析检验结果
自流平水泥标准稠度用水量、凝结时间、胶砂强度按照《GB/T1346-2011水泥标准稠度用水量、凝结时间、安定性检验方法》和《GB/T17671-2021水泥胶砂强度检验方法(I SO法)》检验；净浆流动度按照《GB/T8017-2012混凝土外加剂匀质性试验方法》检验。
自流平水泥化学成分按照《GB/T176-2018水泥化学分析方法》进行检验。测试结果如下：
表4自流平水泥凝结性能测试表
以上水泥安定性全部合格。
表5自流平水泥强度测试表
通过数据对比可以看到，调整磷石膏掺量在1.0％～1.5％之间，采矿废石掺量4％～6％之间，水泥各项指标能够满足混凝土企业质量要求。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (5)
1.一种自流平水泥组合物，其特征在于，以质量分数计，包括水泥熟料65.5～70份、脱硫石膏3～4份、磷石膏1.5～2份、粉煤灰5～7份、采矿废石12～18份；
所述熟料、磷石膏与脱硫石膏搭配使用和所述粉煤灰、采矿废石按照比例要求进行粉磨，控制该水泥中所述SO3质量百分数为2～3份；
所述采矿废石化学成分为：
LOI 27.76～30.81份、SiO2 22.25～25.25份、Al2O3 5.09～7.25份、Fe2O33.13～4.25份、CaO 32.95～37.95份、MgO 2.62～3.95份、水0.50～6.00份；
所述磷石膏化学成分为：
LOI 16.09～19.80份、SiO2 8.14～9.80份、Al2O3 2.35～2.80份、Fe2O3 1.57～1.98份、CaO 29.26～30.80份、MgO 0.43～1.48份、SO3 38.11～43.82份、水0.50～6.00份。
2.根据权利要求1所述的自流平水泥组合物，其特征在于，所述磷石膏容重0.733～0.88g/cm3。
3.根据权利要求1所述的自流平水泥组合物，其特征在于，所述磷石膏主要成分为二水硫酸钙，所述磷石膏中所述二水硫酸钙质量百分数70～90份；
其中所含的次要成分随磷矿石产地不同而各异，一般都含有岩石成分Ca、Mg的磷酸盐及硅酸盐。
4.根据权利要求1所述的自流平水泥组合物，其特征在于，所述二水硫酸钙分解后形成含Ca或Mg的化合物。
5.根据权利要求1所述的自流平水泥组合物，其特征在于，进一步地，所述磷石膏还含有机磷和硫氟类化合物。
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