CN106242328B - A kind of Portland clinker - Google Patents
A kind of Portland clinker Download PDFInfo
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- CN106242328B CN106242328B CN201610668137.3A CN201610668137A CN106242328B CN 106242328 B CN106242328 B CN 106242328B CN 201610668137 A CN201610668137 A CN 201610668137A CN 106242328 B CN106242328 B CN 106242328B
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- clinker
- gangue
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000004568 cement Substances 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- 239000004927 clay Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000006028 limestone Substances 0.000 claims abstract description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 14
- 239000011707 mineral Substances 0.000 claims abstract description 14
- 235000019738 Limestone Nutrition 0.000 claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 12
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 6
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000012241 calcium silicate Nutrition 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 239000004615 ingredient Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 239000003245 coal Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000292 calcium oxide Substances 0.000 claims description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 13
- 235000010755 mineral Nutrition 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000011398 Portland cement Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 238000003837 high-temperature calcination Methods 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 229910052604 silicate mineral Inorganic materials 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 claims description 3
- AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 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 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims description 3
- 238000003908 quality control method Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 235000019976 tricalcium silicate Nutrition 0.000 claims description 3
- 229910021534 tricalcium silicate Inorganic materials 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 2
- 238000002156 mixing Methods 0.000 abstract description 6
- 238000003359 percent control normalization Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 238000002386 leaching Methods 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000010348 incorporation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 208000011580 syndromic disease Diseases 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- -1 clinker Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000005406 washing 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
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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
-
- 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
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of Portland clinkers, clinker f CaO controls are 0.5~1.5%, and it is 1280~1350 grams per liters that clinker liter controls again, and the granularity of the clinker is 5~15mm, 75% or more, clinker includes for alite and belite mineral summation content：Lime stone 83%~86%, iron ore 1.5%~2.5%, gangue 3%~5%, clay 6%~8%, silica sand 1%~3% control SiO after each raw material mixing2Account for 10~15%, Al of gross mass2O3Account for 2.5~3.5%, Fe of gross mass2O31.2~2.0%, the CaO for accounting for gross mass accounts for the 40~45% of gross mass.The clinker heat consumption of the present invention is remarkably decreased, and cement grinding mill and rotary kiln yield are significantly improved, and reduce energy consumption, reduce CO2、NOxThe discharge of equal exhaust gas, meets national energy conservation and emission reduction environmental protection policy.
Description
Technical field
The present invention relates to Portland clinker production technical fields, and in particular to a kind of to produce silicon using gangue ingredient
The method of acid salt cement clinker.
Background technology
Gangue be mine during and coal washing during discharge solid waste, be one kind in coalification course with coal
A kind of relatively low, harder than the coal black and gray rock of phosphorus content of layer association.Its main component is similar to clay, with silica,
Based on aluminium oxide, in addition contain a small amount of iron oxide, calcium oxide, magnesia, sodium oxide molybdena, potassium oxide, phosphorus pentoxide, three oxidations
Sulphur and micro rare element.Gangue is China's annual emissions and the maximum industrial residue of accumulative amount of storage at present, and gangue is abandoned
It sets and does not have to, occupies tract, the sulfide effusion or leaching contained can pollute air, farmland and water body.Therefore, research is answered
There is highly important social effect with gangue, due to its have with clay and its similar chemical composition, and clay is water
The raw material of silica-aluminum materials generally use in mud production, the reaction activity of clay is higher so that cement energy consumption is excessively high, and clay
Exploitation destroys vegetation, damages field, many developed countries is caused to be forbidden to use clay cement baking.Therefore research gangue
It is applied to the production of Portland clinker as raw materials for production, had both met the resoures recycling based industry policy of country, protection
Environment, and can be cement production enterprise energy-saving and emission-reduction, reduce cost, so that it is turned waste into wealth, there is important economic benefit and society
Benefit.
Invention content
The purpose of the present invention is in view of the above problems, offer is a kind of to produce Portland clinker using gangue ingredient
Method can improve clinker quality, improve burnability of raw material, improve the yield of rotary kiln, reduce sinter leaching heat consumption, improve water
The performance of mud clinker.
A kind of Portland clinker, clinker f-CaO controls are 0.5~1.5%, and clinker liter controls again is
The granularity of 1280~1350 grams per liters, the clinker is 5~15mm, and alite and belite mineral summation content are 75%
More than.
The clinker includes the raw material composition of following parts by weight：Lime stone 83%~86%, iron ore 1.5%~
2.5%, gangue 3%~5%, clay 6%~8%, silica sand 1%~3% controls SiO after the mixing of each raw material2Account for gross mass
10~15%, Al2O3Account for 2.5~3.5%, Fe of gross mass2O3Account for gross mass 1.2~2.0%, CaO account for gross mass 40~
45%.
Further preferably clinker includes the raw material composition of following parts by weight：Lime stone 85%, iron ore 2%, coal
Spoil 4%, clay 7%, silica sand 2% control SiO after each raw material mixing2Account for 11.5~13%, Al of gross mass2O3Account for gross mass
2.7~3%, Fe2O31.6~1.9%, the CaO for accounting for gross mass accounts for the 42.5~44% of gross mass.
In gangue, chemical composition CaO is controlled：3~6.5%, SiO2：55~60%, Al2O3：17~20%, Fe2O3：
4.2~6.5%, MgO：1~2%, SO3：0.5~1%；Analysis Values are Aad：84~88%, Vad：3~5.5%, Mad：
0.2~0.35%, FCad：8~10%, Qnet.ad：100~800kcal/kg.
The present invention provides a kind of methods producing Portland clinker using gangue ingredient, specifically include following step
Suddenly：Dry powder raw material are prepared by broken, pre- homogenizing, dispensing, drying, grinding, raw material are then fed into new dry process predecomposition
Kiln is preheated, is decomposed, and most obtains clinker through high-temperature calcination postcooling afterwards, in the blending process by the 50 of original clay~
60wt% replaces with gangue, specially：
1) be crushed to raw materials for production lime stone, clay, iron ore, silica sand, gangue respectively≤50mm and it is stored in heap
In canopy；
2) feeding drying is simultaneous after in mass, lime stone, clay, iron ore, silica sand, gangue are mixed in proportion
Grinding system carries out grinding, control grinding finished product water content≤1.5wt%, and residue on sieve≤16wt% of 80 tm screens is obtained
It is the raw material of dry powder-shaped；
3) the raw material feeding dry method nsp kiln after homogenizing preheated, decomposed, then carried out in cement rotary kiln
High-temperature calcination, calcination temperature are 1300~1450 DEG C (further preferred temperature is 1400 DEG C), and calcining 8-10min is (further excellent
It is 9min to select calcination time), obtain the material for the partial melting shape that material amount of liquid phase is 25-28% (further preferably in order to control
Material amount of liquid phase is 25-28%), use high pressure positive blower air blast with the cold of 50~70 DEG C/min on grate-cooler the material of molten
But speed is cooled to 60~100 DEG C and obtains Portland clinker (further preferably in the cooling of the cooling velocity of 60 DEG C/min
To 70 DEG C).
In step 3), dry method nsp kiln specification is ￠ 4.8m × 74m, is preheated, is divided by 5 grades in dry method nsp kiln
Solution system is operated, while it is 90~95% that control material, which enters the resolution ratio of rotary kiln,.5 grades of preheatings, decomposing systems
For control rotary cement kiln system decomposition furnace outlet temperature is 860~870 DEG C；Rotary cement kiln rear smoke-box temperature be 950~
1050℃；Cement rotary kiln inner second air temperature is 1150~1200 DEG C；Wind-warm syndrome is 950~1000 DEG C three times in cement rotary kiln；
It is 11~12rpm that grate-cooler comb room, which pushes number,.
Above-mentioned steps be explained further for：Rotary cement kiln system decomposition furnace outlet temperature is controlled by original 880~890
DEG C drop to 860~870 DEG C；Kiln tail smoke-box temperature drops to 950~1050 DEG C by 1000~1100 DEG C；Secondary air temperature by 1100~
1150 DEG C are increased to 1150~1200 DEG C；Wind-warm syndrome is increased to 950~1000 DEG C by 880~950 DEG C three times；One section of grate-cooler comb room
Number is pushed to be increased to 11~12rpm by 9~10rpm.Control material is in 8~10min of calcination time of clinkering zone, material liquid phase
Amount ensures that clinker knot grain is uniform in size 25~28%, and crystal development is good, into grate-cooler after be quickly cooled down.The technique walks
In rapid, the former parameter be not added with the technique of gangue, such as：Control rotary cement kiln system decomposition furnace outlet temperature by
880~890 DEG C originally drop to 860~870 DEG C, as：When being not added with gangue, rotary cement kiln system decomposition furnace outlet temperature
Degree is 880~890 DEG C, the raw material of added gangue, when entering cement rotary furnace, rotary cement kiln system decomposition furnace outlet
Temperature is 860~870 DEG C, similarly hereinafter.
The invention has the advantages that：
1) gangue ingredient is utilized to produce Portland clinker scheme, since gangue is a variety of containing sulphur, aluminium, iron etc.
The oxygen-enriched mineral of trace element, the crystalline phase potential barrier of these mineral is weaker, just can be fast when being more than 800 DEG C during high-speed heating
Speed puts oxygen, and the oxygen released just plays depolymerization inside cement raw material and goes out [SiO4]-4The effect of reactivity body, to effectively promote
It is burnt into clinker A mines, while the Macro and microelements in gangue also contribute to clinker liquid phase and occur ahead of time, effectively reduce substance
Fusing point, further promote clinker A mines generate；Since A mine quantity increases, A mines edge is more clear than in the past, and A mine prism-shapeds are reduced
The phenomenon that plate increases, and A mines appear in around cavity is reduced, and the physical property of portland cement clinker has clear improvement, normal consistency
Drop to 23.8% by original 25%, mortar fluidity rises to 210mm by original 195mm.
2) gangue ingredient is utilized to produce Portland clinker scheme, since high KH, height can be used in the addition of gangue
The portland cement clinker intensity amplification of SM dispensings, the content for increasing silicate mineral in clinker, production is notable, and resistance to compression in three days improves
2~3MPa, resistance to compression in 28 days improve 1~2MPa or so, and blending amount of mixture material improves 3~4% in cement.
3) gangue ingredient is utilized to produce Portland clinker scheme, due to containing lower calorific value in gangue,
The reduction of sinter leaching coal consumption can be effectively facilitated, a small amount of trace element contained in gangue in addition effectively reduces material
High temperature fusing point and viscosity improve the burn-ability of raw material, accelerate the progress of solid phase reaction so that sinter leaching coal consumption is further
Decline, the yield of cement grinding mill and rotary kiln greatly improves, and the energy is greatly saved, and reduces production cost, reduces CO2、NOXDeng
The discharge of exhaust gas.
4) portland cement clinker prepared by the method provided through the invention, since its physical property significantly improves so that water
Mud mill yield improves；Workability, water-retaining property, compatibility of cement and admixture of cement etc. are obtained for raising.
The small milling time consuming of the portland cement clinker produced with this programme reduces 3~5min, is applied to the closed circuit water of 4.2 × 13m of Φ
Mud is ground, and 10~20t/h can be improved in cement grinding mill yield.With the clinker produce cement prepare concrete, ensure its working performance and
The dosage of additive can be less with 8~10% in the case of mass conservation.
5) it utilizes gangue ingredient to produce Portland clinker scheme, not only consumes a large amount of solid waste bastard coal
Stone reduces the demand to clay resource, protects agricultural arable land；The incorporation for also increasing mixing material in cement simultaneously, disappears
A large amount of industrial waste slags such as clinker, flyash etc. have been consumed, the stacking of waste residue is reduced, have been conducive to beautify ecological environment.
Specific implementation mode
It is further illustrated the present invention with reference to embodiment, but the scope of protection of present invention is not limited to implement
The range of example statement.
Embodiment 1：
The method for producing Portland clinker using gangue ingredient is carried out in first enterprise new dry process nsp kiln,
Specifically operating procedure is：
1) clinker raw materials for production lime stone, clay, iron ore, silica sand, gangue etc. are crushed to certain grain size model
It encloses and is stored in heap canopy.
2) by lime stone 85%, iron ore 2%, gangue 4%, clay 7%, silica sand 2% is mixed in the ratio of mass fraction
It closes uniformly, wherein content of MgO≤2.5wt%, the calorific value Q of gangue in control lime stonenet.ad≤800kcal/kg。
3) grinding is carried out in feeding vertical with hot wind by said mixture material air swept mill, controls grinding finished product water content
≤ 1.5wt%, 80 μm tail over≤16wt%, obtain be dry powder-shaped raw material.
4) the raw material feeding new dry process nsp kiln after homogenizing preheated, decomposed, then in cement rotary kiln
High-temperature calcination is carried out, calcination temperature is 1400 DEG C, obtains molten state material and forms that size is neat, physically well develop, is rich in A Li
Special and belite mineral crystalline particulate bodies, are most quickly cooled to 70 DEG C through cooler afterwards and obtain portland cement clinker.
Portland cement clinker quality control index：F-CaO focuses on 1280~1350 grams per liters in 0.5~1.5%, liter.
Clinker moduli control range is：
Lime saturation factor (silica is saturated the degree at tricalcium silicate by calcium oxide in clinker)：KH=0.93 ±
0.02；
Silica modulus (ratio of clinker silicate mineral and solvent mineral)：SM=2.7 ± 0.1；
Aluminium-oxygen modulus (ratio of tricalcium aluminate and tetra calcium aluminoferrite in clinker fluxing mineral)：IM=1.6 ± 0.1.
Wherein the chemical composition of raw material is shown in Table 1-1 in embodiment 1：
Table 1-1
To reinforce in production to the pre- homogenizing of the raw material such as lime stone, clay, gangue, troilite, silica sand and moisture
Control ensures the equalization stable of mixed material composition；The inspection for reinforcing raw material composition, improves the accuracy of inspection result；It adopts
With online Automatic Detection and Control program, the instant adjust automatically of raw material composition is realized.Improve the qualification rate of KH, SM, IM three ratio.
In embodiment 1, with clinker chemical analysis results contrast table 1-2 before and after gangue ingredient：
Table 1-2
With clinker physical property contrast table 1-3 before and after gangue ingredient：
Table 1-3
It is shown in Table 1-4 with the yield of gangue rotary kiln and clinker mark coal consumption：
Table 1-4
| Gangue volume | The daily output | Mark coal consumption (kg/t.cli) |
| 0% | 5950 | 105.6 |
| 4% | 6100 | 101.3 |
After upper table data know incorporation gangue ingredient, the lime saturation ratio and silica modulus of clinker can be properly increased, is carried
The content of silicate mineral in high clinker improves clinker performance, and the daily output of clinker improves 150t/h, clinker mark coal consumption
4.3kg/t is had dropped, 3 days intensity of clinker improves 3.1MPa, and intensity improves 2MPa within 28 days.To sum up, using gangue ingredient
Afterwards, clinker yield and quality improves a lot, and clinker grindability is also effectively promoted, and clinker performance is improved, sinter leaching heat consumption
Decline apparent.
Meanwhile will using the clinker and current domestic similar research, the Integrated comparative of similar technique of gangue ingredient production,
It is shown in Table A：
Table A
| Serial number | Title | Before gangue incorporation | After gangue incorporation | Amplification |
| 1 | 3 days compression strength (MPa) of clinker | 31.2 | 34.3 | +3.1 |
| 2 | 28 days compression strength (MPa) of clinker | 56.5 | 58.5 | +2.0 |
| 3 | Rotary kiln yield (t/d) | 5950 | 6100 | +150 |
| 4 | Clinker mark coal consumption (kg/t.cli) | 105.6 | 101.3 | - 4.3 |
| 5 | Clinker consumptive use of water normal consistence (ml) | 125 | 11 | - 6 |
| 6 | P.O42.5 cement mixtures volume (%) | 15 | 18 | +3 |
| 7 | P.C32.5 cement mixtures volume (%) | 36 | 40 | +4 |
| 8 | The small time consuming (min) of clinker | 36 | 33 | - 3 |
| 9 | The clinker presetting period (min) | 102 | 96 | - 6 |
| 10 | Clinker final setting time (min) | 152 | 150 | - 2 |
As it can be seen that producing Portland clinker with gangue ingredient, above-mentioned items production and technical indication has reached at present
Advanced international level.
Embodiment 2：
The method for producing Portland clinker using gangue ingredient is carried out in first enterprise new dry process nsp kiln,
Specifically operating procedure is：
1) clinker raw materials for production lime stone, clay, iron ore, silica sand, gangue etc. are crushed to certain grain size model
It encloses and is stored in heap canopy.
2) by lime stone 83%, iron ore 1.8%, gangue 4.2%, clay 6.4%, silica sand 3% is by mass fraction
Ratio is uniformly mixed, wherein content of MgO≤2.5wt%, the calorific value Q of gangue in control lime stonenet.ad≤800kcal/
kg。
3) grinding is carried out in feeding vertical with hot wind by said mixture material air swept mill, controls grinding finished product water content
≤ 1.5wt%, 80 μm tail over≤16wt%, obtain be dry powder-shaped raw material.
4) the raw material feeding new dry process nsp kiln after homogenizing preheated, decomposed, then in cement rotary kiln
High-temperature calcination is carried out, calcination temperature is 1450 DEG C, obtains molten state material and forms that size is neat, physically well develop, is rich in A Li
Special and belite mineral crystalline particulate bodies, are most quickly cooled to 100 DEG C through cooler afterwards and obtain portland cement clinker.
Portland cement clinker quality control index：F-CaO focuses on 1280~1350 grams per liters in 0.5~1.5%, liter.
Clinker moduli control range is：
Lime saturation factor (silica is saturated the degree at tricalcium silicate by calcium oxide in clinker)：KH=0.93 ±
0.02；
Silica modulus (ratio of clinker silicate mineral and solvent mineral)：SM=2.7 ± 0.1；
Aluminium-oxygen modulus (ratio of tricalcium aluminate and tetra calcium aluminoferrite in clinker fluxing mineral)：IM=1.6 ± 0.1.
The method for producing Portland clinker using gangue ingredient is carried out in second enterprise new dry process nsp kiln,
The clinker result of production is as follows：
In embodiment 2, with clinker chemical analysis results contrast table 2-1 before and after gangue ingredient：
Table 2-1
With clinker physical property contrast table 2-2 before and after gangue ingredient：
Table 2-2
It is shown in Table 2-3 with the yield of rotary kiln before and after gangue and clinker mark coal consumption：
Table 2-3
| Gangue volume | The daily output (t/d) | Mark coal consumption (kg/t.cli) |
| 0% | 5980 | 126 |
| 4.2% | 6106 | 102.8 |
After upper table data know incorporation gangue ingredient, the lime saturation ratio and silica modulus for properly increasing clinker the case where
Under, the daily output of clinker improves 126t/h, and clinker mark coal consumption has dropped 3.2kg/t, and 3 days intensity of clinker improves 3.8MPa,
28 days intensity improves 1.9MPa, and small time consuming shortens 4min.To sum up, after using gangue ingredient, clinker yield and quality have compared with
Big to improve, clinker grindability, clinker performance have clear improvement, and sinter leaching heat consumption declines apparent.
Claims (2)
1. a kind of production method of Portland clinker, which is characterized in that ripe using gangue ingredient production portland cement
The method of material is carried out in nsp kiln, and specific operating procedure is：
（1）Clinker raw materials for production lime stone, clay, iron ore, silica sand, gangue are crushed to certain particle size range and stored up
It is stored in heap canopy；
（2）By lime stone 83%, iron ore 1.8%, gangue 4.2%, clay 6.4%, silica sand 3% mixes in the ratio of mass fraction
Uniformly, SiO after each raw material mixes is controlled2Account for 10~15%, Al of gross mass2O3Account for 2.5~3.5%, Fe of gross mass2O3It accounts for
1.2~2.0%, CaO of gross mass accounts for the 40~45% of gross mass, wherein content of MgO≤2.5wt% in control lime stone, bastard coal
Calorific value Qnet.ad≤800kcal/kg of stone；
（3）Carry out grinding in feeding vertical with hot wind by said mixture material air swept mill, control grinding finished product water content≤
1.5wt%, 80 μm tail over≤16wt%, obtain be dry powder-shaped raw material；
（4）Raw material feeding new dry process nsp kiln after homogenizing is preheated, is decomposed, is then carried out in cement rotary kiln
High-temperature calcination, calcination temperature are 1450 DEG C, obtain molten state material and formed size is neat, physically well develop, rich in alite and
The crystalline particulate body of belite mineral is most quickly cooled to 100 DEG C through cooler afterwards and obtains portland cement clinker；
Portland cement clinker quality control index：F-CaO focuses on 1280~1350 grams per liters in 0.5~1.5%, liter；
Clinker moduli control range is：
Lime saturation factor, silica is saturated the degree at tricalcium silicate by calcium oxide in clinker：
KH=0.93±0.02；
Silica modulus, the ratio of clinker silicate mineral and solvent mineral：SM=2.7±0.1；
Aluminium-oxygen modulus, the ratio of tricalcium aluminate and tetra calcium aluminoferrite in clinker fluxing mineral：IM=1.6±0.1.
2. the production method of Portland clinker described in claim 1, which is characterized in that the particle of the clinker
It spends for 5~15mm, alite and belite mineral summation content 75% or more, the chemical composition of the gangue is CaO：3~
6.5%, SiO2：55~60%, Al2O3：17~20%, Fe2O3：4.2~6.5%, MgO：1~2%, SO3：0.5~1%；Gangue
Analysis Values be Aad：84~88%, Vad：3~5.5%, Mad：0.2~0.35%, FCad：8~10%, Qnet.ad：
100~800kcal/kg.
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| CN105837152A (en) * | 2016-06-14 | 2016-08-10 | 安徽华业建工集团有限公司 | Building cement and preparation method thereof |
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| CN104926163B (en) | 2016-09-28 |
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