CN110156356A - A kind of production line and its technique preparing high alumina cement using white clay - Google Patents
A kind of production line and its technique preparing high alumina cement using white clay Download PDFInfo
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- CN110156356A CN110156356A CN201910243867.2A CN201910243867A CN110156356A CN 110156356 A CN110156356 A CN 110156356A CN 201910243867 A CN201910243867 A CN 201910243867A CN 110156356 A CN110156356 A CN 110156356A
- Authority
- CN
- China
- Prior art keywords
- alumina cement
- high alumina
- heat
- white clay
- clay
- Prior art date
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Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000004568 cement Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000004927 clay Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 50
- 239000002893 slag Substances 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000003245 coal Substances 0.000 claims abstract description 28
- 239000004411 aluminium Substances 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 238000001354 calcination Methods 0.000 claims abstract description 11
- 238000003801 milling Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 43
- 239000002817 coal dust Substances 0.000 claims description 19
- 238000000465 moulding Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 229910001570 bauxite Inorganic materials 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000003818 cinder Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000008188 pellet Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000009841 combustion method Methods 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000005997 Calcium carbide Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 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
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 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
- 206010023149 Jaw fracture Diseases 0.000 description 1
- 241000533901 Narcissus papyraceus Species 0.000 description 1
- 238000009621 Solvay process Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000009993 causticizing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000010819 recyclable waste Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/56—Chlorides
-
- 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
- C04B7/32—Aluminous 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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
- C04B7/364—Avoiding environmental pollution during cement-manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Ecology (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of production line and its technique preparing high alumina cement using white clay, including feeder apparatus, drying equipment, calciner, heat collection equipment, cleaner, coal supply apparatus, combustion apparatus, milling equipment.The present invention can not only have elimination white clay, effectively the local graceful natural ecology living environment of protection by clay-slag/carbide slag, aluminium ash/aluminum raw material, nucleus element three mixed calcining high alumina cement is made；The advantages that quickening utilization of the recycling of renewable resources, turns waste into wealth, turns harm into good, and pollution administration improves environment, releases occupied land resource, and the heat generated in production process can sufficiently be recycled, and improve working efficiency.
Description
Technical field
The present invention relates to recovery and reuse of waste fields, refer in particular to a kind of production line that high alumina cement is prepared using white clay
And its technique.
Background technique
There are two types of white clay sources, first is that during soda manufacture, with can generate a large amount of waste liquid, waste liquid in ammonia-soda process alkaline
The alkaline residue generated after filters pressing is commonly called as white clay.Black liquor is generated in another paper-making pulping production process to handle through alkali recovery technology
Afterwards, lime is added in green liquor and carries out causticizing reaction, obtain the sediment of white, as white clay.Paper white sludge reaction is as follows:
Na2CO3+ CaO+ H2O =2NaOH+ CaCO3 ↓
Its Main chemical component are as follows:
| Project | CaO | MgO | Fe2O3 | Al2O3 | SiO2 | Burn vector |
| Ratio (%) | 44.4-51.9 | 0.55-1.75 | 0.17-1.2 | 0.46-1.4 | 3.38-11 | 31.49-43 |
Generate 6,000,000 tons or more white clays every year according to national statistics, many white clays are stacked naturally or filled, certainly will increase in air
Dust content, or cause soil and groundwater environmental pollution.Therefore, the processing problem of white clay restricts always soda industry and system
Slurry papermaking further develops, a great problem for needing us to be dedicated to capturing.
The applicant once prepared calcium aluminate in a kind of utilization white clay of one Chinese invention patent of submission on May 28th, 2018
The production line and its technique of powder, it discloses by ratio of weight and the number of copies by 0.4~0.5 part of clay-slag/carbide slag, 0.9~1.1 part
Aluminum raw material, 0.04~0.05 part of nucleus element be sequentially transmitted in blender be mixed and stirred for uniformly；It will mix later
It closes object and is sent to 20~40min of calcining in rotary kiln, until the temperature of mixture reaches 900~1100 DEG C；After having calcined, by this
Mixture is cooled to 300~400 DEG C by cooler；After having cooled down, which is subjected to grinding, system by the first ball mill
Obtain calcium aluminate powder.The invention can eliminate white clay, and effectively the local graceful natural ecology living environment of protection, accelerates production-goods again
Source recycles, and turns waste into wealth, turns harm into good, and pollution administration improves environment, releases occupied land resource, Er Qieke
Think the ecological environment that people create Amenities, promote harmony between man and nature unified.
But the invention there are a defect, i.e., the mixture obtained after blender stirring, which is not dried, is just sent into revolution
It is calcined in kiln, this just results in the mixture and is only capable of being cooled to 300~400 DEG C, and working efficiency is lower, and is unfavorable for the later period
The recycling of heat can not completely realize the energy-saving and environment-friendly original intention of the applicant.
Summary of the invention
The present invention provides a kind of production line and its technique that high alumina cement is prepared using white clay, and main purpose is to overcome
The existing technical efficiency for preparing high alumina cement using white clay is lower and the defect that is not energy-saving and environment-friendly.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of technique preparing high alumina cement using white clay, comprising the following steps:
1) by ratio of weight and the number of copies by 0.30~0.50 part of clay-slag/carbide slag, 0.50~1.10 part of aluminium ash/aluminum raw material,
0.03~0.06 part of nucleus element, which is sequentially transmitted in blender, be mixed and stirred for uniformly；
2) it is delivered to molding machine after having stirred and carries out granulation balling-up, then raw material ball after molding feeding dryer is dried,
Siccative ball of the final moisture content less than 2% is obtained after drying；
3) siccative ball is sent into calcined by rotary kiln, calcines 25~45min, until the temperature of mixture reaches 1300~1500 DEG C；
4) after having calcined, which is cooled to 50 DEG C or less by cooler；
5) heat collected when being cooled down the cooler is delivered to dryer as drying heat source；
6) after the siccative ball in step 4 has cooled down, which is subjected to grinding by the first ball mill, high alumina cement is made.
Further, the tail gas generated in the calcination process in rotary kiln is exchanged heat to clean sky by heat exchanger
Gas, the clean air resupply the dryer.
Further, remaining after the cooler is collected heat and the clean air supply dryer
Waste heat is delivered in aluminium polychloride liquid again aluminium polychloride solid is made.
Further, after the tail gas is exchanged heat by heat exchanger, desulfurization process is first carried out to the tail gas using wet desulphurization,
Oxygen-rich combustion method and SNCR method are successively used later, by the NO in tail gasXIt is reduced into N2And water.
Further, in step 3, the method for the calcined by rotary kiln are as follows: coal cinder crushed by coal mill after through by
The screening of powder concentrator, then be sent in four-way coal burner and burnt by Pneumatic conveying pump, it is generated after burning
Hot wind is delivered in the rotary kiln and calcines to the siccative ball in it.
A kind of production line preparing high alumina cement using white clay, including
Feeder apparatus: it includes for accommodating clay-slag/carbide slag clay-slag feed bin, for accommodating aluminium ash/aluminum raw material
It is aluminum raw material feed bin, the nucleus element feed bin for accommodating nucleus element, broken for carrying out medium size to bauxite or aluminium ash
Jaw crusher, for carrying out the broken fine crusher of thin formula, for by thin formula to the broken bauxite of medium size or aluminium ash
Broken bauxite or aluminium ash are ground into the second ball mill of aluminum raw material, for mixing the clay-slag/carbide slag, aluminium
Ash/aluminum raw material, nucleus element and the blender stirred, connect the molding machine and dry the molding machine for connecting the blender outlet
The belt conveyor of dry equipment；
Drying equipment: it includes the dryer for the molding raw material ball of the molding machine to be dried into siccative ball；
Calciner: it includes the rotary kiln that the siccative ball for coming to drying equipment conveying is calcined；
Heat collection equipment: it includes for carrying out cooling cooler, for inciting somebody to action to the siccative ball of process calciner calcining
The heat that the cooler is collected when cooling is delivered to the heat transmission pipeline of dryer；
Cleaner: it includes tail gas adsorption tower, cyclone dust collectors, pulse dust collector, oxygen-enriched combustion boiler, SNCR boiler；
Coal supply apparatus: it includes the coal mill for being crushed to coal cinder, the powder concentrator for screening coal dust, for transmitting coal
The screw conveyor of powder, the coal dust feed bin for connecting the screw conveyor output end, for the coal dust in coal dust feed bin to be sent to
Pneumatic conveying pump in combustion apparatus；
Combustion apparatus: it includes the four-way coal burner for connecting the pneumatic conveying pump output terminal, by the four-way coal dust
The hot wind that burner generates is transmitted to the roots blower in the rotary kiln；
Milling equipment: it includes for crushing cooler siccative ball after cooling so that the first ball milling of high alumina cement is made
Machine, the high alumina cement feed bin for accommodating the high alumina cement.
Further, the heat collection equipment further includes that the tail gas for generating the calciner is sent to dedusting
The tail gas transmission pipeline of equipment carries out cooling heat exchanger to the tail gas in tail gas transmission pipeline, is used for the heat exchanger
The hot gas of generation is delivered to the hot gas transmission pipeline of dryer.
Further, the rotary kiln is cascading type rotary kiln.
Further, the dryer is vibration ebullated bed dryer.
Further, the blender is vertical turbulent blender.
Compared to the prior art, the beneficial effect that the present invention generates is:
The present invention can by clay-slag/carbide slag, aluminium ash/aluminum raw material, nucleus element three mixed calcining be made high alumina cement,
It not only has elimination white clay, effectively the local graceful natural ecology living environment of protection；Accelerate utilization of the recycling of renewable resources,
Turn waste into wealth, turn harm into good, pollution administration improves environment, the advantages that releasing occupied land resource, and can be by life
The heat generated during producing is sufficiently recycled, and improves working efficiency.
Detailed description of the invention
Fig. 1 is structural block diagram of the invention.
Fig. 2 is flow diagram of the invention.
Specific embodiment
Illustrate a specific embodiment of the invention with reference to the accompanying drawings.
Referring to Fig.1, Fig. 2.A kind of production line preparing high alumina cement using white clay, including feeder apparatus 1, drying equipment 2,
Calciner 3, heat collection equipment 4, cleaner 5, coal supply apparatus 6, combustion apparatus 7, milling equipment 8.Wherein,
Feeder apparatus 1 includes for accommodating clay-slag/carbide slag clay-slag feed bin 11, for accommodating aluminium ash/aluminum raw material
Aluminum raw material feed bin 12, the nucleus element feed bin 13 for accommodating nucleus element are broken for carrying out medium size to bauxite or aluminium ash
Broken jaw crusher 14, for carrying out the broken fine crusher 15 of thin formula to the broken bauxite of medium size or aluminium ash, using
In the broken bauxite of thin formula or aluminium ash are ground into the second ball mill 16 of aluminum raw material, be used to mix the clay-slag/
Carbide slag, aluminium ash/aluminum raw material, nucleus element and stir blender 17, connection blender outlet molding machine 18, connect this at
The belt conveyor 19 of type machine 18 and drying equipment 2；In addition, the size according to clay-slag/carbide slag raw material and nucleus element raw material,
Also optionally clay-slag/carbide slag biggish to the volume and nucleus element successively carry out jaw crusher, fine crusher, second
The three-stage of ball mill is broken；The blender 17 is vertical turbulent blender.
Drying equipment 2 includes the dryer 21 for the molding raw material ball of molding machine 18 to be dried into siccative ball；Molding machine
18 mixture for coming to blender conveying carries out granulation balling-up.
Calciner 3 includes the rotary kiln 31 that the siccative ball for bringing to drying equipment defeated 2 is calcined；
Heat collection equipment 4 includes for carrying out cooling cooler 41, for inciting somebody to action to the siccative ball of process calciner calcining
The heat that the cooler 41 is collected when cooling is delivered to the heat transmission pipeline 42 of dryer 21, for generate calciner
Tail gas is sent to the tail gas transmission pipeline 43 of cleaner, carries out cooling heat exchanger to the tail gas in tail gas transmission pipeline
44, the hot gas for generating the heat exchanger is delivered to the hot gas transmission pipeline 45 of dryer.
Cleaner 5 include tail gas adsorption tower 51, cyclone dust collectors 52, pulse dust collector 53, oxygen-enriched combustion boiler 54,
SNCR boiler 55；The tail gas adsorption tower 51 can be the spray column for adding lye；It is specifically used are as follows: the tail gas warp that rotary kiln 31 generates
It crosses tail gas adsorption tower 51 and gets rid of vulcanized sodium therein, then successively get rid of tail by cyclone dust collectors 52, pulse dust collector 53
Dust in gas enters oxygen-enriched combustion boiler 54 later and carries out oxygen-enriched combusting, finally enters SNCR boiler 55 and carry out reduction reaction,
Ammonium hydroxide or urea are added i.e. in SNCR boiler 55 as reducing agent, by the NO in tail gasXIt is reduced into N2And water.
Coal supply apparatus 6 includes the coal mill 61 for being crushed to coal cinder, the powder concentrator 62 for screening coal dust, is used for
The screw conveyor 63 for transmitting coal dust, is used for coal dust feed bin 64 the coal dust feed bin 64 for connecting 63 output end of screw conveyor
In coal dust be sent to the Pneumatic conveying pump 65 in combustion apparatus 7；It is specifically used are as follows: coal cinder is transmitted to coal by bobbing machine material machine
It is crushed in grinding machine 61, powder concentrator 62 is sent to after crushing and is screened, passes through spiral again by dust removal process after having screened
Conveyer 63 is sent to coal dust feed bin 64 and stores for future use, and the coal dust in coal dust feed bin 64 passes through Pneumatic conveying pump 65 again and transmits later
To combustion apparatus 7.
Combustion apparatus 7 includes the four-way coal burner 71 of connection 65 output end of Pneumatic conveying pump, by the four-way coal
The hot wind that powder burner 71 generates is transmitted to the roots blower 72 in rotary kiln 31；
Milling equipment 8 include for crush the siccative ball after cooling of cooler 41 be made high alumina cement the first ball mill 81,
For accommodating the high alumina cement feed bin 82 of the high alumina cement.
Referring to Figures 1 and 2.Specifically, above-mentioned rotary kiln 31 is cascading type rotary kiln.Using only inside cascading type rotary kiln
Special inner lining structure, can greatly improve the heat exchanger effectiveness of kiln, and material can be made abundant when " overturning " moves in kiln
Flame is contacted, firing energy consumption is reduced；Meanwhile pellet can become more closely knit in mutual squeeze, and increase homogenizing for pellet
Horizontal and intensity；The high-performance refractory thermal insulation material of customization also greatly reduces kliner coating heat dissipation bring energy loss；In waterfall
Uniformly distributed multiple groups wireless temperature measuring device on formula rotary kiln is fallen, each area's temperature can be flexibly controlled, be equipped with Flame supervision and control system, it can be according to kiln
Interior temperature requirements automatically control flame size and mend air quantity, keep burning more abundant, reduce while reducing fuel usage amount
The generation of nitrogen oxides has changed simultaneously the natural mode that tradition manually sees fire.
The cascading type rotary kiln of same production capacity specification, compared to traditional rotary kiln, length is only its one third；Object in kiln
Expect that fill factor is 18%, is twice of traditional rotary kiln fill factor (9-14%).
Rotary kiln uses oxygen-enriched burning process, can accelerate burning velocity, promotes burning completely, and then increase heat utilization
Rate reduces coefficient of excess air.It proves that 20% sintering time of clinker ball can be reduced using oxygen-enriched combustion technology by test, improves
Its yield and the smoke growing amount for saving 20% fuel and reduction by 30%.In sintering process, NO can be effectively preventedXGeneration, save
Fume treatment cost, synthesis energy saving effect are considerable.The above multiple performance advantage superposition, so that the energy of cascading type rotary kiln
Consumption is only the 1/2 of traditional rotary kiln.In addition, have benefited from the length advantage of cascading type rotary kiln, production-line technique flexible layout, by
The limitation of soil, workshop etc. is small, can greatly save land occupation and construction investment.
Referring to Figures 1 and 2.Dryer 21 is vibration ebullated bed dryer.Ebullated bed dryer is vibrated to dry compared to tradition
Dry equipment, under the premise of guaranteeing pellet dries quantity, main advantage is that drying rate is fast, heat transference efficiency is high.The drying is set
The standby drying period is averagely only 3 minutes, and for 2 hours drying periods of conventional belt dryer, efficiency is greatly promoted；It should
Equipment heat source comes from production line waste heat, and without separately setting heat source, heat transfer coefficient may be up to 95%.
Referring to Figures 1 and 2.Above-mentioned clay-slag feed bin 11, aluminum raw material feed bin 12, nucleus element feed bin 13, coal dust feed bin 44
It is all made of closed round library, to reduce dust pollution.
Referring to Fig.1, Fig. 2.A kind of technique preparing high alumina cement using white clay, comprising the following steps:
1) by ratio of weight and the number of copies by 0.30~0.50 part of clay-slag/carbide slag, 0.50~1.10 part of aluminium ash/aluminum raw material,
0.03~0.06 part of nucleus element, which is sequentially transmitted in blender 17, be mixed and stirred for uniformly；
2) it is delivered to molding machine 18 after having stirred and carries out granulation balling-up, then raw material ball after molding feeding dryer 21 is dried
It is dry, siccative ball of the final moisture content less than 2% is obtained after drying；
3) siccative ball feeding rotary kiln 31 is calcined, calcines 25~45min, until the temperature of mixture reaches 1300~1500
℃；
4) after having calcined, which is cooled to 50 DEG C or less by cooler 41；
5) heat collected when being cooled down cooler 41 is delivered to dryer 21 as drying heat source；
6) after the siccative ball in step 4 has cooled down, which is subjected to grinding by the first ball mill 81, high aluminum water is made
Mud.
Referring to Figures 1 and 2.The tail gas generated in 31 calcination process of rotary kiln is exchanged heat to clean by heat exchanger 43
Air, clean air, which absorbs, to be become hot gas after heat and resupplies dryer 21.Also, the heat that cooler 41 is collected
It is delivered in aluminium polychloride liquid again with remaining waste heat after hot gas supply dryer 21 and carries out water mist drying to be made poly-
Aluminum chloride solids are closed, to realize making full use of for heat.After tail gas is exchanged heat by heat exchanger 43, first using wet desulphurization to this
Tail gas carries out desulfurization process, oxygen-rich combustion method and SNCR method is successively used later, by the NO in tail gasXIt is reduced into N2And water.Separately
Outside, the links such as workshop heating are applied also for thermal energy extra after dryer 21.
In step 3, the method for the calcining of rotary kiln 31 are as follows: coal cinder passes through after being crushed by coal mill 61 by powder concentrator 62
Screening, then be sent in four-way coal burner 71 and burnt by Pneumatic conveying pump 65, the hot wind generated after burning
It is delivered in rotary kiln 31 and the siccative ball in it is calcined.
Aluminum raw material the preparation method comprises the following steps: take the bauxite or aluminium ash of 55% or more alchlor content, it is broken to first pass through jaw
It is broken that broken machine 14 carries out medium size, then carries out thin formula by fine crusher 15 and be crushed, and carries out powder finally by the second ball mill 16
It is broken, the aluminum raw material is made.
Carbide slag be calcium carbide hydrolysis obtain acetylene gas after with calcium hydroxide waste residue as main component.1t calcium carbide adds water can
More than 300 kg acetylene gas are generated, while generating the industrial wastes of 10t solid content about 12%, are commonly called as carbide slag slurries.Efficiently use calcium carbide
Waste residue can not only bring good economic benefit, environmental benefit and social benefit, and be able to achieve and turn waste into wealth, but at present
Recoverying and utilizing method be not possible to complete to make full use of it, and in the art, carbide slag can quilt as clay-slag
It is fully used in and prepares high alumina cement.
The present invention can be by clay-slag/carbide slag, aluminium ash/aluminum raw material, nucleus element three mixed calcining high alumina is made
Cement not only has elimination white clay, effectively the local graceful natural ecology living environment of protection；Accelerate recycling of recyclable waste
The advantages that utilization, turns waste into wealth, turn harm into good, and pollution administration improves environment, releases occupied land resource, Er Qieneng
It is enough sufficiently to recycle the heat generated in production process, working efficiency is improved, production line operation personnel depaly only needs 6-11
People, can also greatly reduce labor intensity, simultaneously at a possibility that not only can utmostly avoiding accident and artificial incorrect operation
Attrition's demand.
The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited to this, all to utilize this
Design makes a non-material change to the present invention, and should all belong to behavior that violates the scope of protection of the present invention.
Claims (10)
1. a kind of technique for preparing high alumina cement using white clay, it is characterised in that: the following steps are included:
1) by ratio of weight and the number of copies by 0.30~0.50 part of clay-slag/carbide slag, 0.50~1.10 part of aluminium ash/aluminum raw material,
0.03~0.06 part of nucleus element, which is sequentially transmitted in blender, be mixed and stirred for uniformly；
2) it is delivered to molding machine after having stirred and carries out granulation balling-up, then raw material ball after molding feeding dryer is dried,
Siccative ball of the final moisture content less than 2% is obtained after drying；
3) siccative ball is sent into calcined by rotary kiln, calcines 25~45min, until the temperature of mixture reaches 1300~1500 DEG C；
4) after having calcined, which is cooled to 50 DEG C or less by cooler；
5) heat collected when being cooled down the cooler is delivered to dryer as drying heat source；
6) after the siccative ball in step 4 has cooled down, which is subjected to grinding by the first ball mill, high alumina cement is made.
2. a kind of technique for preparing high alumina cement using white clay as described in claim 1, it is characterised in that: the calcined by rotary kiln
The tail gas generated in the process is exchanged heat to clean air by heat exchanger, and the clean air resupplies the drying
Machine.
3. a kind of technique for preparing high alumina cement using white clay as claimed in claim 2, it is characterised in that: the cooler is collected
Heat and the clean air supply remaining waste heat after the dryer be delivered in aluminium polychloride liquid again with
Aluminium polychloride solid is made.
4. a kind of technique for preparing high alumina cement using white clay as claimed in claim 2, it is characterised in that: the tail gas is by changing
After hot device heat exchange, desulfurization process is first carried out to the tail gas using wet desulphurization, successively uses oxygen-rich combustion method and SNCR method later,
By the NO in tail gasXIt is reduced into N2And water.
5. a kind of technique for preparing high alumina cement using white clay as described in claim 1, it is characterised in that: in step 3, described time
The method of rotary kiln calcining are as follows: coal cinder passes after being crushed by coal mill through the screening by powder concentrator, then by Pneumatic conveying pump
It send to burning in four-way coal burner, the hot wind generated after burning is delivered in the rotary kiln to dry in it
Pellet is calcined.
6. a kind of production line for preparing high alumina cement using white clay, it is characterised in that: including
Feeder apparatus: it includes for accommodating clay-slag/carbide slag clay-slag feed bin, for accommodating aluminium ash/aluminum raw material
It is aluminum raw material feed bin, the nucleus element feed bin for accommodating nucleus element, broken for carrying out medium size to bauxite or aluminium ash
Jaw crusher, for carrying out the broken fine crusher of thin formula, for by thin formula to the broken bauxite of medium size or aluminium ash
Broken bauxite or aluminium ash are ground into the second ball mill of aluminum raw material, for mixing the clay-slag/carbide slag, aluminium
Ash/aluminum raw material, nucleus element and the blender stirred, connect the molding machine and dry the molding machine for connecting the blender outlet
The belt conveyor of dry equipment；
Drying equipment: it includes the dryer for the molding raw material ball of the molding machine to be dried into siccative ball；
Calciner: it includes the rotary kiln that the siccative ball for coming to drying equipment conveying is calcined；
Heat collection equipment: it includes for carrying out cooling cooler, for inciting somebody to action to the siccative ball of process calciner calcining
The heat that the cooler is collected when cooling is delivered to the heat transmission pipeline of dryer；
Cleaner: it includes tail gas adsorption tower, cyclone dust collectors, pulse dust collector, oxygen-enriched combustion boiler, SNCR boiler；
Coal supply apparatus: it includes the coal mill for being crushed to coal cinder, the powder concentrator for screening coal dust, for transmitting coal
The screw conveyor of powder, the coal dust feed bin for connecting the screw conveyor output end, for the coal dust in coal dust feed bin to be sent to
Pneumatic conveying pump in combustion apparatus；
Combustion apparatus: it includes the four-way coal burner for connecting the pneumatic conveying pump output terminal, by the four-way coal dust
The hot wind that burner generates is transmitted to the roots blower in the rotary kiln；
Milling equipment: it includes for crushing cooler siccative ball after cooling so that the first ball milling of high alumina cement is made
Machine, the high alumina cement feed bin for accommodating the high alumina cement.
7. a kind of production line for preparing high alumina cement using white clay as claimed in claim 6, it is characterised in that: the heat collection
Equipment further includes that the tail gas for generating the calciner is sent to the tail gas transmission pipeline of cleaner, transmits to tail gas
Tail gas in pipeline carries out cooling heat exchanger, the hot gas for generating the heat exchanger be delivered to dryer hot gas pass
Defeated pipeline.
8. a kind of production line for preparing high alumina cement using white clay as claimed in claim 6, it is characterised in that: the rotary kiln is
Cascading type rotary kiln.
9. a kind of production line for preparing high alumina cement using white clay as claimed in claim 6, it is characterised in that: the dryer is
Vibrate ebullated bed dryer.
10. a kind of production line for preparing high alumina cement using white clay as claimed in claim 6, it is characterised in that: the blender
For vertical turbulent blender.
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| CN110980785A (en) * | 2019-11-19 | 2020-04-10 | 中国铝业股份有限公司 | Sintering method of alumina clinker |
| CN112159126A (en) * | 2020-09-29 | 2021-01-01 | 宁波益能机械科技有限公司 | Portland cement preparation process |
| CN114920474A (en) * | 2022-04-21 | 2022-08-19 | 山东大学 | Method for preparing new mineral system high-temperature cement by using aluminum ash and carbide slag |
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Application publication date: 20190823 |