CN103030311B - A kind of high additive blast-furnace cement and preparation method thereof - Google Patents
A kind of high additive blast-furnace cement and preparation method thereof Download PDFInfo
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- CN103030311B CN103030311B CN201210510979.8A CN201210510979A CN103030311B CN 103030311 B CN103030311 B CN 103030311B CN 201210510979 A CN201210510979 A CN 201210510979A CN 103030311 B CN103030311 B CN 103030311B
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- 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
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- 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
Abstract
The present invention relates to technical field of cement production, specifically a kind of high additive blast-furnace cement and preparation method thereof.High additive blast-furnace cement comprises grog 75-88%, blast furnace slag 6.5-20%, Wingdale 4.5%-7%, cement grinding aid 0.005-0.2%.Processing step comprises batching warehouse-in, batching, prepares burden into mill, grinding processing, grinding aid dropping, cement bulk and packaging.The present invention, by utilizing grinding aid, in the constant situation of guarantee coventional type cement quality, improves the volume of granulated blast-furnace slag in cement, prepares the Portland cement of excellent property.Achieve and save cement clinker resource, comprehensive utilization granulated blast-furnace slag, reduces dust, CO
2, SO
3and NO
xdischarge, reach the object of comprehensive utilization of resources, energy-saving and emission-reduction, reduce Portland cement production cost, improve effects simultaneously.
Description
Technical field
The invention belongs to technical field of cement production, particularly relate to a kind of high additive blast-furnace cement and preparation method thereof, particularly utilize cement grinding aid to improve the incorporation of granulated blast-furnace slag in cement, produce colory high additive blast-furnace cement.
Background technology
The by product that granulated blast-furnace slag (hereinafter referred to as slag) produces when being Steel Plant's manUfaCtUre of pig iron is the granular particle thing that the melts formed by reacting in blast furnace ironmaking process is formed through air or the quick cooling curing of shrend.According to incompletely statistics, often produce one ton of pig iron, discharge 0.3 ~ 1 ton, slag, Steel Plant of China year slag quantity discharged up to more than 6,000 ten thousand tons.The discharge of these slags, accumulation, not only consume a large amount of manpower and materials and financial resources, but also occupied a large amount of soils, causes very large pressure to environment.Therefore, the problem solving slag environmental pollution rationally and effectively pay close attention to by the world.Although slag is a kind of trade waste, be also a kind of vitreous structure material with very high lateral reactivity, if energy Appropriate application, it is also a kind of high-quality " secondary resource " simultaneously.Slag later strength enhancement rate is very fast, and along with the raising of specific surface area, its activity index is corresponding to be significantly improved.Mix slag, the water requiremen of cement can be improved, workability, regulate its intensity, it is reasonable active addition, a kind of resource preferably for manufacture of cement, slag produces ordinary Portland cement as cement mixture, slag cement and concrete admixture have obtained more general use in cement, but generally speaking slag grindability and activity are all poor than grog, strength of cement can be made to reduce on the one hand after its volume increases, also reduce the output of cement grinding mill on the other hand, therefore, limit the application of slag at ordinary Portland cement, its volume as ordinary Portland cement blended material is not bery high (generally all about 10%) always.Therefore how in ordinary Portland cement is produced, improving fine slag contents to greatest extent, is the realistic problem being badly in need of at present solving.
Grinding aid is a kind of surfactant materials, the crackle in macrobead can be made to be badly in need of fracture, wrap film can be formed on material particles surface, make medium smooth, intergranular negative charge is eliminated, surface is reached capacity state, stops surperficial recombine no longer to be attracted each other and be bonded to agglomerate, improve the movement rate of medium and the effect of motoricity.Thus, adopt grinding aid thus improve the efficiency of grinding, impelling raising product production.In addition, some grinding aids have the effect of quality-improving simultaneously, can regulate the various performances of cement, such as reduce the water requirement of cement, postpone or shift to an earlier date the time of coagulation of cement, change the strength development change etc. in cement setting each period.Visible, scientifically utilize cement grinding aid can solve slag simultaneously and mix the two aspect problems brought.Thus, form basic fundamental core and the thinking of research invention, namely utilize cement grinding aid to improve granulated blast-furnace slag utilization ratio.
The progress of following correlation technique is obtained at present: patent CN102101757A by retrieval, the composite Portland cement of fusion industrial residue and production method thereof, the composite Portland cement of a kind of fusion industrial residue of this disclosure of the invention and production method thereof, production component comprises Portland clinker, desulfurated plaster, Wingdale, cement grinding aid, granulated bf slag (2-10%), flyash, ferro-alloy cinder, zinc metallurgical slag, waste residue grinding aid activity excitant, waste residue blended amount and fusion kind many, complicated component, reaction process is loaded down with trivial details, cost is greatly highly difficult, grinding aid requires strict.
Patent CN102249631A, patent name porous soil block, application is built by Korea Co., Ltd Korea Spro fire, this porous soil block composition mainly contains blast-furnace cement (38-52%), and furnace slag powder, earth dehydrated gyp-, containing at least one in flaxen fiber, paper pulp fiber, banana fiber, purposes is wideless, inapplicable as a large amount of cement works materials, its porous character is conducive to plant-growth, but production cost is high.
Patent CN101712537A; building polymer powder based on composite silicate; its main component comprises flyash, graining blast-furnace cinder micro-powder (20-30%), silicate cement, limestone powder, terra alba, and building polymer powder based on composite silicate specific surface area reaches 470-500m
2between/kg, component requirements is strict, and cost is high strict to machine foresees.
Patent CN101434458B; the preparation method of modified superfine graining blast-furnace cinder micro-powder and application thereof; its method is that granulated blast-furnace slag is ground to certain surface-area through Vertical Mill; modified granulated blast-furnace slag is mainly used in replacing the cement in gelatinous material; this invention is only carried out modification to granulated blast-furnace slag; do not relate to the concrete further production application in cement; because its modifying process adds the cost of granulated blast-furnace slag; and high for the fineness requirement of granulated blast-furnace slag, make its application more difficult.
Patent CN101291888A, cement additire and cement composition, applied for by Tokyo DC limited-liability company, the cement additire of its invention has the effect of the generation of the monosulfate suppressed in industrial waste and cementaceous hardenite, comprise calcium carbonate, gypsum, coal ash, blast furnace slag powder, this invention mainly solves the generation of monosulfate in cement, but cement composition more complicated, technical process matching degree is not high, is unfavorable for the control of cost.
Patent CN102382912A, a kind of method processing blast furnace slag, blast furnace slag melt mixes in the basin having heat exchanger with unslaked lime by the method under the condition of high temperature, and carry out vexed tank process efflorescence, this treatment process needs hot conditions, have the advantages that energy consumption is high, for the application of the blast furnace slag after process.
Patent CN1468824A, flyash in great mixed amount produces the method for complex cement, a kind of flyash in great mixed amount of this disclosure of the invention produces the method for complex cement, flyash 55-68%, grinding aid, nitrocalcite, caustic soda, anhydrous sodium sulphate etc., reduce coal dust ash environmental pollution, mainly concentrate the recycling problem solving flyash, in the preparation of final cement, the addition of slag is 5-7%, utilization ratio for slag is not very high, because process coal dust process adds cost, the cement cost prepared is improved.
Patent CN102633447A, makes granulated blast-furnace Titanium slag the processing method of active slag powder, and a kind of method granulated blast-furnace Titanium slag being made active slag powder of this patent disclosure, procedure is more complicated, need multiple step, product applications is indefinite.
Patent CN102173627A, a kind of composite blending material of slag powder and using method, this patent disclosure a kind of composite blending material of slag powder and using method, slag, unslaked lime, calcined gypsum after grinding as the adulterant of cement concrete product, pre-treatment is done for cement admixture, has not reached and significantly reduce cement cost object.
Patent CN1657465A, composite cement with less clinker and production method thereof, this patent with the addition of the adulterants such as slag, flyash, volcanic ash, zeolite in a large number in cement products, but its final cement products quality can only with production intensity grade 27.5MPa, 32.5MPa complex cement similar nature.
Patent CN102180612A, for the compound spike and preparation method thereof of cement or high performance concrete, cement in patent or concrete comprise silicon manganese slag, slag, Wingdale, slag, coal ash powder, grinding aid etc., wherein the consumption of grinding aid reaches 0.5% or 2%, exceed country to specify the addition standard of liquid grinding aid in cement: 0.5% of cement quality can not be exceeded, cement or concrete composition kind many and complicated, grinding aid addition is high, cost improve.
Summary of the invention
The object of the invention is to overcome added ingredients complexity in the processing of existing production cement various, production process is loaded down with trivial details, Grinding aid dosage is large, consumables cost is high, the shortcoming that product performance heterogeneity is stable, a kind of high additive blast-furnace cement and preparation method thereof is provided, liquid grinding aid of cement is utilized to improve the blended amount of granulated blast-furnace slag in common 42.5 silicate cements in the method, the stability of grinding aid add-on is ensured by grinding aid volume pump, homogeneity and accuracy, product mainly contains cement clinker, granulated blast-furnace, Wingdale, grinding aid forms, composition is simple and clear, consumables cost is lower, achieve and save cement clinker resource, comprehensive utilization granulated blast-furnace slag, reduce dust, CO
2, SO
3and NO
xdischarge, reach the object of comprehensive utilization of resources, energy-saving and emission-reduction, reduce Portland cement production cost, improve effects simultaneously.
The present invention chooses cement clinker, granulated blast-furnace slag, liquid grinding aid as cement grinding work material; through bistrique grog travelling belt, bistrique slag travelling belt, grinding aid volume pump, cement clinker, slag, Wingdale, grinding aid are sent in cement grinding mill and carry out grinding; send into cement silo after completing grinding, cement dispatches from the factory through in bulk, packaging two kinds of modes.Relate in implementation procedure of the present invention: the determination of the selection of (1) grinding aid kind and volume, the adaptability of grinding aid to material is each variant, cement clinker, slag, limestone material performance characteristic that the selection Main Basis the present invention for grinding aid kind locks.(2) determination of grinding aid point of addition, grinding aid interpolation is mixed a little and its content accurately effective control device.
A kind of high additive blast-furnace cement of the present invention and preparation method thereof technical scheme is as follows: high additive blast-furnace cement comprises cement clinker, granulated blast-furnace slag, grinding aid; the ratio of quality and the number of copies of each component is: cement clinker 75-88%; granulated blast-furnace slag 6.5-20%; Wingdale 4.5-7%, grinding aid 0.005-0.2%.
Above-described a kind of high additive blast-furnace cement, is characterized in that described cement clinker composition and weight percent thereof are: LOSS0.05-0.18%, SiO
215 ~ 25%, Al
2o
33 ~ 7%, Fe
2o
32 ~ 5%, CaO50 ~ 70%, MgO1 ~ 3%, SO
30.5 ~ 1.0%, f-CaO0.2 ~ 1%; Described granulated blast-furnace slag composition and weight percent thereof are: LOSS0.1 ~ 0.5%, SiO
225 ~ 40%, Al
2o
315 ~ 25%, Fe
2o
30.1 ~ 0.5%, CaO30 ~ 45%, MgO7 ~ 15%, SO
30.1 ~ 0.5%; CaCO in described Wingdale
3weight percentage is 50-90%; Described grinding aid is liquid grinding aid.
Above-described a kind of high additive blast-furnace cement, described liquid grinding aid comprises ammonium acetate, trolamine, Ammoniom-Acetate, propylene glycol, ethylene glycol, certain herbaceous plants with big flowers acid, the mixture of any one or they in naphthenic acid.
Above-described high additive blast-furnace cement grinding aid volume is 0.005 ~ 0.05%, when granulated blast-furnace slag volume is 7 ~ 14%, and cement Loss3.3 ~ 4.5%, SO
32.0 ~ 3.0%, Cl-0.002 ~ 0.007%, fineness 1.0 ~ 2.0%, specific surface area 360 ~ 430m
2/ kg, denseness 24 ~ 25%, presetting period 2:20 ~ 3:00h:min, final setting time 3:20 ~ 4:00h:min, R
324 ~ 27MPa, R
2845 ~ 60MPa; Grinding aid volume is 0.05 ~ 0.2%, when granulated blast-furnace slag volume is 14 ~ 20%, and cement Loss3.0 ~ 4.0%, SO
31.8 ~ 2.7%, Cl-0.003 ~ 0.006%, fineness 0.8 ~ 2.0%, specific surface area 360 ~ 420m
2/ kg%, denseness 23.5 ~ 25.0%, presetting period 2:20 ~ 3:00h:min, final setting time 3:25 ~ 4:00h:min, R
325 ~ 28MPa, R
2850 ~ 60MPa.
When the above high additive blast-furnace cement grinding aid addition is 0.005-0.2%, cement granules≤3.28 μm account for 16.38 ± 1.00%, 3.28≤cement granules≤33.54 μm account for 48.66 ± 1.00%, 33.54≤cement granules≤60.00 μm account for 27.23 ± 1.00%, cement granules >=60.00 μm account for 7.73 ± 1.00%, cement granules pattern is spherical more, and size is homogeneous.
Prepare the arbitrary described high additive blast-furnace cement method of more than right, its processing step comprises batching warehouse-in, batching and grinding processing, grinding aid and drips, and it is characterized in that:
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system;
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system, according to mass ratio 75-88:6.5-20:4.5-7 batching, by the cement clinker of bistrique, Wingdale, granulated blast-furnace slag belt, the batching measured is sent in cement grinding mill again, start cement grinding mill and carry out grinding processing, stirring velocity is at 1000 ~ 2000rmp, and churning time is 1.5 ~ 10h;
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the dripping quantity of grinding aid is controlled by volume pump; dripping quantity is made to account for the 0.005-0.2% of all ingredients by weight per-cent in cement grinding mill; grinding aid is a little evenly added drop-wise to cement grinding mill from mixing, and obtains product after grinding machines.
Being packaged in cement bulk machine and cement-packing plant of high additive blast-furnace cement product more than obtained completes.
Above-described a kind of high additive blast-furnace cement preparation method, is characterized in that, the flow that described grinding aid volume pump controls is 120 ~ 200L/h; Described grinding aid drip mix a little on mill tail, bistrique grog belt, on bistrique gypsum belt, on bistrique slag belt, directly add mill interior in one of position.
Above-described a kind of high additive blast-furnace cement preparation method, it is characterized in that, be applied in the production of ordinary Portland cement, described ordinary Portland cement code name is PO, and strength grade is 42.5,42.5R.
A kind of high additive blast-furnace cement of the present invention and preparation method thereof creates following good result:
(1) grinding aid drips as being a little evenly added drop-wise in pulverizer by volume pump mixing, and can reach and accurately control grinding aid, save Grinding aid dosage.
(2) the present invention can be used for producing ordinary Portland cement and Portland blast furnace slag cement, the cement performance prepared and model are the Portland cement similar nature of 42.5MPa, and partial properties is better than traditional 42.5MPa cement, present method obtains cement 28 days relatively traditional common 42.5MPa of ultimate compression strength and improves 3 ~ 6MPa, improves cement performance quality and reduces manufacture of cement cost simultaneously.
(3) adopt process for producing of the present invention, not only improve the addition content producing granulated blast-furnace slag in common 42.5MPa cement, and ensure that mill hourly output does not reduce and the quality index of cement does not decline.
Accompanying drawing explanation
Fig. 1. high additive blast-furnace cement preparation method schema of the present invention.
Embodiment
Below in conjunction with Fig. 1 and embodiment, a kind of high additive blast-furnace cement of the present invention and preparation method thereof is described.
Cement clinker, granulated blast-furnace slag specification of quality:
Cement clinker chemical constitution: LOSS0.05-0.18%, SiO
215 ~ 25%, Al
2o
33 ~ 7%, Fe
2o
32 ~ 5%, CaO50 ~ 70%, MgO1 ~ 3%, SO
30.5 ~ 1.0%, f-CaO0.2 ~ 1%;
Granulated blast-furnace slag chemical constitution: LOSS0.1 ~ 0.5%, SiO
225 ~ 40%, Al
2o
315 ~ 25%, Fe
2o
30.1 ~ 0.5%, CaO30 ~ 45%, MgO7 ~ 15%, SO
30.1 ~ 0.5%.
Wingdale chemical constitution: calcium carbonate 50 ~ 90%, silicon-dioxide 0.07 ~ 3%, aluminium sesquioxide 0.02 ~ 3%, ferric oxide 0.03 ~ 3%, magnesium oxide 0.08 ~ 3%.
Embodiment 1
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 85:9:6 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 1200rmp, and churning time is 4h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the dripping quantity of grinding aid propylene glycol is controlled 0.025% by volume pump; the flow that grinding aid volume pump controls is 120 ~ 150L/h; grinding aid is evenly added drop-wise in cement grinding mill from bistrique grog belt, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Embodiment 2
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 78:15:7 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 1000rmp, and churning time is 2.5h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the mixing dripping quantity of grinding aid trolamine and Ammoniom-Acetate is controlled 0.065% by volume pump; the flow that grinding aid volume pump controls is 120 ~ 150L/h; grinding aid is evenly added drop-wise to cement grinding mill from mixing a mill tail, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Embodiment 3
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 82:12:6 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 1500rmp, and churning time is 3.5h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the mixing dripping quantity of grinding aid ammonium acetate and certain herbaceous plants with big flowers acid is controlled 0.085% by volume pump; the flow that grinding aid volume pump controls is 150 ~ 160L/h; grinding aid is evenly added drop-wise in cement grinding mill from mixing a bistrique slag belt, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Embodiment 4
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 75:20:5 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 1700rmp, and churning time is 5.5h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the dripping quantity of grinding aid naphthenic acid is controlled 0.1% by volume pump; the flow that grinding aid volume pump controls is 160 ~ 180L/h; grinding aid is evenly added drop-wise in cement grinding mill from mixing a bistrique gypsum belt, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Embodiment 5
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 80:14.5:5.5 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 1800rmp, and churning time is 7h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the dripping quantity of grinding aid ethylene glycol is controlled 0.15% by volume pump; the flow that grinding aid volume pump controls is 180 ~ 200L/h; grinding aid Direct Uniform joins in cement grinding mill, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Embodiment 6
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 78:17.5:4.5 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 2000rmp, and churning time is 10h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; dripping quantity is mixed 0.18% by volume pump control grinding aid Ammoniom-Acetate and naphthenic acid; the flow that grinding aid volume pump controls is 130 ~ 150L/h; grinding aid Direct Uniform joins in cement grinding mill, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Embodiment 7
(1) batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system.
(2) batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system; according to mass ratio 88:6.5:5.5 batching; by the cement clinker of bistrique, Wingdale, slag belt, the batching measured is sent in cement grinding mill again; start cement grinding mill and carry out grinding processing; stirring velocity is at 1300rmp, and churning time is 1.5h.
(3) grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; dripping quantity is mixed 0.2% by volume pump control grinding aid propylene glycol and certain herbaceous plants with big flowers acid; the flow that grinding aid volume pump controls is 120 ~ 140L/h; grinding aid evenly joins in cement grinding mill from bistrique slag belt, obtains product after grinding machines.
(4) cement packing and detection: being divided in cement bulk machine and cement-packing plant of cement completes, detects cement performance index Loss%, SO
3%, Cl-%, fineness %, specific surface area m
2/ kg, denseness %, presetting period h:min, final setting time h:min, R
3mPa, R
28mPa, result is as table 1.
Table 1. prepares the performance overview of cement
Claims (5)
1. a high additive blast-furnace cement, is characterized in that it is made up of cement clinker, granulated blast-furnace slag, Wingdale, grinding aid component, and the ratio of quality and the number of copies of each component is:
Cement clinker 75-88%
Granulated blast-furnace slag 6.5-20%
Wingdale 4.5-7%
Grinding aid 0.005-0.2%;
Described cement clinker composition and weight percent thereof are: LOSS0.05-0.18%, SiO
215 ~ 25%, Al
2o
33 ~ 7%, Fe
2o
32 ~ 5%, CaO50 ~ 70%, MgO1 ~ 3%, SO
30.5 ~ 1.0%, f-CaO0.2 ~ 1%, the weight percent sum of described cement clinker composition is 100%; Described granulated blast-furnace slag composition and weight percent thereof are: LOSS0.1 ~ 0.5%, SiO
225 ~ 40%, Al
2o
315 ~ 25%, Fe
2o
30.1 ~ 0.5%, CaO30 ~ 45%, MgO7 ~ 15%, SO
30.1 ~ 0.5%; CaCO in described Wingdale
3weight percentage is 50-90%; Described grinding aid is liquid grinding aid.
2. a kind of high additive blast-furnace cement according to claim 1, described liquid grinding aid comprises ammonium acetate, trolamine, Ammoniom-Acetate, propylene glycol, ethylene glycol, certain herbaceous plants with big flowers acid, the mixture of any one or they in naphthenic acid.
3. a preparation method for the arbitrary described high additive blast-furnace cement of claim 1 ~ 2, its processing step comprises batching warehouse-in, batching and grinding processing, grinding aid and drips, and it is characterized in that:
Batching warehouse-in: cement clinker, granulated blast-furnace slag, Wingdale send into batching storehouse by delivery system;
Batching and grinding processing: the cement clinker in batching storehouse, granulated blast-furnace slag, Wingdale pass through metering system, according to mass ratio 75-88:6.5-20:4.5-7 batching, by the cement clinker of bistrique, Wingdale, granulated blast-furnace slag belt, the batching measured is sent in cement grinding mill again, start cement grinding mill and carry out grinding processing, stirring velocity is at 1000 ~ 2000rpm, and churning time is 1.5 ~ 10h;
Grinding aid drips: while cement grinding mill carries out grinding processing to cement clinker, granulated blast-furnace slag, Wingdale; the dripping quantity of grinding aid is controlled by volume pump; dripping quantity is made to account for the 0.005-0.2% of all ingredients by weight per-cent in cement grinding mill; grinding aid is a little evenly added drop-wise to cement grinding mill from mixing, and obtains product after grinding machines.
4. preparation method according to claim 3, is characterized in that, the flow that described grinding aid volume pump controls is 120 ~ 200L/h; Described grinding aid drip mix a little on mill tail, bistrique grog belt, on bistrique gypsum belt, on bistrique slag belt, directly add mill interior in one of position.
5. according to the arbitrary described preparation method of claim 3 ~ 4, it is characterized in that, be applied in the production of ordinary Portland cement, described ordinary Portland cement code name is PO, and strength grade is 42.5,42.5R.
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| CN103936924B (en) * | 2014-03-25 | 2016-01-20 | 广州吉前化工有限公司 | A kind of polymer slag grinding aid and its preparation method and application |
| CN104446039A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for improving machine hour production of cement grinding mill for producing P.O42.5 cement |
| CN104478251A (en) * | 2014-11-25 | 2015-04-01 | 广西鱼峰水泥股份有限公司 | Method for increasing mixing amount of road cement mineral powder |
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| CN104446035A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method capable of increasing mineral powder mixing amount of road cement |
| CN104446038A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for improving machine hour production of cement grinding mill for producing P.O42.5 cement |
| CN104478252A (en) * | 2014-11-25 | 2015-04-01 | 广西鱼峰水泥股份有限公司 | Method for increasing amount of mineral powder mixed into road cement |
| CN104496213A (en) * | 2014-11-25 | 2015-04-08 | 广西鱼峰水泥股份有限公司 | Technology for improving output per hour per machine of P.O42.5 cement produced by using cement mill |
| CN104446036B (en) * | 2014-11-25 | 2016-12-07 | 广西鱼峰水泥股份有限公司 | A kind of method for improving road cement contents of ground slag |
| CN104496214A (en) * | 2014-11-25 | 2015-04-08 | 广西鱼峰水泥股份有限公司 | Method for improving output per machine-hour of P.O42.5 cement |
| CN104446037A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for improving machine-hour yield of P.O42.5 cement |
| CN106242329A (en) * | 2016-07-20 | 2016-12-21 | 山东东华水泥有限公司 | A kind of cement grinding process |
| CN107902928A (en) * | 2017-11-02 | 2018-04-13 | 马鞍山市宝奕金属制品工贸有限公司 | A kind of method that blast furnace cinder prepares cement |
| CN112456837A (en) * | 2019-09-09 | 2021-03-09 | 罗定市宏泰建材有限公司 | Cement admixture and preparation method thereof |
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