CN105541143B - A method of utilizing dry-process rotory kiln system production high strength low-carbon clinker - Google Patents
A method of utilizing dry-process rotory kiln system production high strength low-carbon clinker Download PDFInfo
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- CN105541143B CN105541143B CN201610034418.3A CN201610034418A CN105541143B CN 105541143 B CN105541143 B CN 105541143B CN 201610034418 A CN201610034418 A CN 201610034418A CN 105541143 B CN105541143 B CN 105541143B
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- 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
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
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- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention is a kind of method using dry-process rotory kiln system production high strength low-carbon clinker, and raw material includes calcareous raw material and clayey raw material, and wherein calcareous raw material parts by weight are 65~91, and clayey raw material parts by weight are 8~35；Raw material is mixed and finely ground to obtain grinding material, into the pre-heating system of dry method cement rotary kiln, material is set to be warming up to 850~950 DEG C, into dore furnace, 900~1000 DEG C of calciner temperature, resulting decomposing materials enter the clinkering zone of rotary kiln, and burning zone temperature is 1300~1400 DEG C, obtain clinker discharging and obtain high strength low-carbon clinker after supercooling.The high strength low-carbon clinker mechanical strength Characteristics of Development is that 3 days compression strength is greater than 15~35MPa, and compression strength is greater than 25~45MPa, 28 days 55~75MPa of compression strength within 7 days；There is energy-saving and emission-reduction feature, i.e. nitrogen oxides (NO simultaneouslyx) 40% or more discharge reduction, carbon dioxide (CO2) discharge reduction by 15% or so, 20% or more is reduced than coal consumption, reduces by 5% or more than power consumption.
Description
Technical field
The present invention relates to the technical fields of production clinker.Dry method cement rotary kiln system is utilized specifically related to a kind of
The method of system production high strength low-carbon clinker.
Background technique
Dry method cement rotary kiln is using suspension preheating and predecomposition as the dry-process cement clinker production equipment of core, dry method water
Stall the thermal efficiency, a large amount of continuous productions, in terms of kiln more hollow than shaft kiln, dry method, lepol kiln, wet-process rotary kiln it is excellent
It is more very much.
The raw material of production Portland clinker are mainly that calcareous raw material, clayey raw material and correction material, cement are ripe
The main mineral constituent of material is tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetra calcium aluminoferrite.Usual tricalcium silicate accounts for mineral group
At 50~60%, dicalcium silicate accounts for 20~25%, and tricalcium aluminate accounts for 5~10%, and tetra calcium aluminoferrite accounts for 10~15%.Cement work
Industry consumes large quantities of lime stone resource, and 1450 DEG C of high-temperature calcination need to consume a large amount of coal resources, and one ton of clinker of every production is about
Discharge one ton of CO2, 0.74 kilogram of SO2, 130 kilograms of dust and a large amount of NOx.China is manufacture of cement big country, cement in 2013
Yield has reached 2,000,000,000 tons, cement industry be exactly all the time high energy consumption, high resource consumption, high pollution industry, be coal electricity and
The maximum industry of CO2 emissions except steel.
Lime saturation factor can be reduced, tricalcium silicate content in clinker is reduced, improve dicalcium silicate content and is mentioned
The hydration activity of high dicalcium silicate, and produce high strength low-carbon clinker at a lower temperature using dry method cement rotary kiln and be
Solve the problems, such as the various effective way of puzzlement cement industry.
Summary of the invention
It is an object of the invention to by the combination of low-carbon cement clinker material technology and dry method cement rotary kiln production technology
High strength cement is produced, the quality requirements to limestone resource are reduced, coal and power consumption is reduced, substantially reduces CO2、SO2、
NOxThe discharge of equal Air Pollutants.
What the object of the invention was achieved through the following technical solutions:
A method of utilizing dry-process rotory kiln system production high strength low-carbon clinker, the production high strength low-carbon
The raw material of clinker includes calcareous raw material and clayey raw material, the parts by weight of the raw material are as follows:
Calcareous raw material: 65~91；
Clayey raw material: 8~35；
Production stage are as follows:
A, raw material is mixed and finely ground to obtain grinding material by each raw material weight number；
B, the resulting grinding material of step A enters the pre-heating system of dry method cement rotary kiln, exports in the pre-heating system
So that material is warming up to 850~950 DEG C, obtains heating material；
C, the resulting heating material of step B enters dore furnace, 900~1000 DEG C of the calciner temperature, and heating material leads to
Decomposing materials are obtained after crossing the dore furnace；
D, the resulting decomposing materials of step C enter the clinkering zone of dry method cement rotary kiln, and the burning zone temperature 1300~
1400 DEG C, decomposing materials obtain clinker discharging after passing through the clinkering zone；
E, the resulting clinker discharging of step D obtains high strength low-carbon clinker after supercooling.
As the improvement to raw material, the calcareous raw material is limestone, marl, one or more of mixed in carbide slag
Object is closed, wherein CaO content 45~56%.
Further, the clayey raw material be clay, it is loess, sandstone, shale, one or more of mixed in high silicon tailings
Object is closed, wherein SiO2Content 55~95%.
Further, the raw material further includes irony correction material, and the parts by weight of the irony correction material are 0.01~9,
The irony corrects material as mixture one or more of in iron powder, iron ore of low ore grade, iron-containing tailing, pyrite slag, wherein
Fe2O3Content 8~30%.
Further, the raw material further includes aluminum correction material, and the parts by weight of the aluminum correction material are 0.01~5,
Aluminum correction material is bauxite, gangue, flyash, cinder, mixture one or more of in red mud, wherein Al2O3Contain
Amount 8~70%.
Further, the raw material further includes trade waste, and the parts by weight of the trade waste are 0.01~
4.5；The trade waste is trade waste A, trade waste B and trade waste C one of which or several mixing
Object, the trade waste A are the trade waste of phosphorous, titanium, barium, sulphur；The trade waste B be calcic, phosphorus, boron, potassium,
The trade waste of sodium, sulphur；The trade waste C is the tailing of calcic, magnesium, silicon, zinc, copper, nickel, boron.
As the improvement to preparation method, grinding material granularity requirements obtained by the step A are that 0.08mm square hole screen tails over
Less than 15%.
Further, pre-heating system is 5 grades of pre-heating systems in the step B.
Further, in decomposing materials obtained by the step C resolution ratio of calcium carbonate 70% or more.
Further, the time that decomposing materials pass through clinkering zone in the step D is 5~10min.
The beneficial effects of the present invention are:
1. low lime saturation factor can be significantly reduced the CaO content requirement to calcium carbonate resource, therefore can largely use
The industrial residues such as low-grade limestone, carbide slag, blast furnace slag of current more reserves, can be reduced or not using iron tailings ingredient
With clayey raw material and iron aluminum raw material.
2. the sintering temperature of the high strength low-carbon clinker is 1350 ± 50 DEG C, than the burning of traditional portland clinker
50~150 DEG C are reduced at 1450 DEG C of temperature, CO2Discharge amount reduces by 15% or so, NO than production conventional cement clinker dischargexDischarge
Amount reduces by 40% or more, reduces by 20% or more than coal consumption, reduces by 5% or more than power consumption.
3. 3 days high activity, high strength low-carbon clinker compression strength are up to 15~35MPa, intensity is reachable within 28 days
55MPa~75MPa, cement mortar divergence can reach 180mm~210mm, and hydration heat of cement is lower, and stability is good, work
Function admirable.
Specific embodiment
Embodiment 1
A method of utilizing dry-process rotory kiln system production high strength low-carbon clinker, the production high strength low-carbon
The raw material of clinker includes calcareous raw material and clayey raw material, the parts by weight of the raw material are as follows:
Calcareous raw material: 65~91；
Clayey raw material: 8~35；
Production stage are as follows:
A, it is mixed and finely ground to obtain grinding material in raw mill after raw material metering, grinds granularity requirements 0.08mm square hole screen out and tails over
Less than 15%；
B, grinding material makes material heat up by 5 grades of pre-heating systems of dry method cement rotary kiln the 5th grade of preheater outlet
To 850~950 DEG C, heating material is obtained；
C, heating material obtains decomposing materials by dore furnace, and calciner temperature is controlled at 900~1000 DEG C, control gained
The resolution ratio of the calcium carbonate of decomposing materials exists 70% or more into the resolution ratio of the calcium carbonate of decomposing materials before next step
70% or more；
D, decomposing materials enter rotary kiln clinkering zone, and burning zone temperature must be controlled at 1350~1400 DEG C, clinkering zone gas
Atmosphere should be oxidizing atmosphere.Material is controlled by the time of clinkering zone in 5~10min, and clinker discharging is obtained；The step is high to obtaining
Strength low carbon clinker most critical, at 1350~1400 DEG C of temperature and the atmospheric condition, Doped ions enter dicalcium silicate
Intracell is simultaneously retained in a part that crystals are constructed as crystal lattice, to obtain high activity, high strength low-carbon water
Under the conditions of this temperature and atmosphere following doped and substituted reaction occurs for mud clinker,
Al3++3F-→Ca2++O2- [1]
S6++2Al3+→3Si4+ [2]
Foreign atom should be such that electronics is distributed to some calcium ions to draw close, rather than it is attached that foreign atom is distributed in complete set
Closely, otherwise, existing activation point can be sacrificed, and makes always to activate point reduction, to reduce C2S hydration activity；
E, clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
The calcareous raw material is limestone, marl, mixture one or more of in carbide slag, wherein CaO content
45~56%.
The clayey raw material are clay, loess, sandstone, shale, mixture one or more of in high silicon tailings,
Middle SiO2Content 55~95%.
The raw material can also include irony correction material, and the parts by weight of the irony correction material are 0.01~9, the iron
Matter correction material is iron powder, iron ore of low ore grade, iron-containing tailing, mixture one or more of in pyrite slag, wherein Fe2O3Contain
Amount 8~30%.
The raw material can also include aluminum correction material, and the parts by weight of the aluminum correction material are 0.01~5, the aluminium
Matter correction material is bauxite, gangue, flyash, cinder, mixture one or more of in red mud, wherein Al2O3Content 8~
70%.
The raw material can also include trade waste, and the parts by weight of the trade waste are 0.01~4.5；It is described
Trade waste is trade waste A, trade waste B and trade waste C one of which or several mixtures, the work
Industry waste A is the trade waste of phosphorous, titanium, barium, sulphur；The trade waste B is the work of calcic, phosphorus, boron, potassium, sodium, sulphur
Industry waste；The trade waste C is the tailing of calcic, magnesium, silicon, zinc, copper, nickel, boron.
The mineral composition of the high strength low-carbon clinker includes dicalcium silicate (>=60%), tricalcium silicate (0~25%),
Tricalcium aluminate (0~5%), tetra calcium aluminoferrite (5~15%) and a small amount of amorphous interphase；By concerned countries standard testing side
Method, the high strength low-carbon clinker mechanical strength Characteristics of Development are that 3 days compression strength is greater than 15~35MPa, 7 days compression strength
Greater than 25~45MPa, 28 days 55~75MPa of compression strength；The high strength low-carbon clinker stability is qualified, grindability and biography
Portland clinker of uniting is suitable.Meanwhile high strength low-carbon cement has following energy-saving and emission-reduction feature, i.e. nitrogen oxides (NOx)
Discharge reduces by 40% or more, carbon dioxide (CO2) discharge reduction by 15% or so, 20% or more is reduced than coal consumption, than power consumption
Reduce by 5% or more.
Embodiment 2
Further optimized on the basis of embodiment 1.
1, raw material selection is carried out first:
Calcareous raw material: use lime stone as raw material, wherein CaO mass percentage content 49%；
Clayey raw material: use sandstone as clayey raw material, wherein SiO2Mass percentage content is 75%；
The mixture of trade waste A and C, mixed proportion 5:1.
2, it is prepared after raw material is selected by following weight (%):
Calcareous raw material: 77
Clayey raw material: 19
The mixture of trade waste A and C: 4
3, its processing step after raw material is selected are as follows:
It is 12% that mixing reaches 0.08mm square hole screen to tail over by raw mill grinding to partial size first after raw material metering；Then
By 5 grades of pre-heating systems of dry method cement rotary kiln, material is set to be warming up to 860 DEG C in the 5th grade of preheater；Then material is by dividing
Furnace is solved, calciner temperature is controlled at 930 DEG C, and the resolution ratio of calcium carbonate is 78% when control raw material enter kiln；Then material enters back
Rotary kiln clinkering zone, burning zone temperature is controlled at 1360 DEG C, and under the conditions of this temperature, material is existed by the time control of clinkering zone
5min；Then clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
Embodiment 3
Further optimized on the basis of embodiment 1.
1, raw material selection is carried out first:
Calcareous raw material: using the mixture of lime stone, marl and electroslag stone as raw material, mixed proportion 2:1:1 its
Middle CaO mass percentage content 52%；
Clayey raw material: using the mixture of sandstone and shale as clayey raw material, mixed proportion 3:1, wherein SiO2
Mass percentage content is 78%；
Trade waste B.
2, it is prepared after raw material is selected by following weight (%):
Calcareous raw material: 78
Clayey raw material: 20
Trade waste B:2
3, its processing step after raw material is selected are as follows:
It is 13% that mixing reaches 0.08mm square hole screen to tail over by raw mill grinding to partial size first after raw material metering；Then
By 5 grades of pre-heating systems of dry method cement rotary kiln, material is set to be warming up to 870 DEG C in the 5th grade of preheater；Then material is by dividing
Furnace is solved, calciner temperature is controlled at 950 DEG C, and the resolution ratio of calcium carbonate is 80% when control raw material enter kiln；Then material enters back
Rotary kiln clinkering zone, burning zone temperature is controlled at 1340 DEG C, and under the conditions of this temperature, material is existed by the time control of clinkering zone
6min；Then clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
Embodiment 4
Further optimized on the basis of embodiment 1.
1, raw material selection is carried out first:
Calcareous raw material: being raw material using electroslag masonry, wherein CaO mass percentage content 52%；
Clayey raw material: using the mixture of clay and loess as clayey raw material, mixed proportion 3:1, wherein SiO2
Mass percentage content is 70%；
Irony correction material: using the mixture of iron powder and iron ore of low ore grade, mixed proportion 1:2, wherein Fe2O3Content
18%；
Aluminum correction material: using the mixture of bauxite and gangue, mixed proportion 3:1, wherein Al2O3Content 30%；
The mixture of trade waste A, B and C, mixed proportion 1:1:1.
2, it is prepared after raw material is selected by following weight (%):
3, its processing step after raw material is selected are as follows:
It is 13% that mixing reaches 0.08mm square hole screen to tail over by raw mill grinding to partial size first after raw material metering；Then
By 5 grades of pre-heating systems of dry method cement rotary kiln, material is set to be warming up to 865 DEG C in the 5th grade of preheater；Then material is by dividing
Furnace is solved, calciner temperature is controlled at 900 DEG C, and the resolution ratio of calcium carbonate is 71% when control raw material enter kiln；Then material enters back
Rotary kiln clinkering zone, burning zone temperature is controlled at 1320 DEG C, and under the conditions of this temperature, material is existed by the time control of clinkering zone
7min；Then clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
Embodiment 5
Further optimized on the basis of embodiment 1.
1, raw material selection is carried out first:
Calcareous raw material: being raw material using electroslag masonry, wherein CaO mass percentage content 52%；
Clayey raw material: use clay as clayey raw material, wherein SiO2Mass percentage content is 70%；
Irony correction material: iron tailings is used, wherein Fe2O3Content 25%.
2, it is prepared after raw material is selected by following weight (%):
Calcareous raw material: 75
Clayey raw material: 20
Irony correction material: 5
3, its processing step after raw material is selected are as follows:
It is 14% that mixing reaches 0.08mm square hole screen to tail over by raw mill grinding to partial size first after raw material metering；Then
By 5 grades of pre-heating systems of dry method cement rotary kiln, material is set to be warming up to 860 DEG C in the 5th grade of preheater；Then material is by dividing
Furnace is solved, calciner temperature is controlled at 960 DEG C, and the resolution ratio of calcium carbonate is 80% when control raw material enter kiln；Then material enters back
Rotary kiln clinkering zone, burning zone temperature is controlled at 1360 DEG C, and under the conditions of this temperature, material is existed by the time control of clinkering zone
5min；Then clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
Embodiment 6
Further optimized on the basis of embodiment 1.
1, raw material selection is carried out first:
Calcareous raw material: being raw material using electroslag masonry, wherein CaO mass percentage content 52%；
Clayey raw material: use clay as clayey raw material, wherein SiO2Mass percentage content is 70%；
Aluminum correction material: bauxite is used, wherein Al2O3Content 40%.
2, it is prepared after raw material is selected by following weight (%):
Calcareous raw material: 75
Clayey raw material: 22
Aluminum correction material: 3
3, its processing step after raw material is selected are as follows:
It is 14% that mixing reaches 0.08mm square hole screen to tail over by raw mill grinding to partial size first after raw material metering；Then
By 5 grades of pre-heating systems of dry method cement rotary kiln, material is set to be warming up to 860 DEG C in the 5th grade of preheater；Then material is by dividing
Furnace is solved, calciner temperature is controlled at 960 DEG C, and the resolution ratio of calcium carbonate is 80% when control raw material enter kiln；Then material enters back
Rotary kiln clinkering zone, burning zone temperature is controlled at 1360 DEG C, and under the conditions of this temperature, material is existed by the time control of clinkering zone
5min；Then clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
Embodiment 7
Further optimized on the basis of embodiment 1.
1, raw material selection is carried out first:
Calcareous raw material: being raw material using electroslag masonry, wherein CaO mass percentage content 52%；
Clayey raw material: use clay as clayey raw material, wherein SiO2Mass percentage content is 70%；
2, it is prepared after raw material is selected by following weight (%):
Calcareous raw material: 78
Clayey raw material: 22
3, its processing step after raw material is selected are as follows:
It is 11% that mixing reaches 0.08mm square hole screen to tail over by raw mill grinding to partial size first after raw material metering；Then
By 5 grades of pre-heating systems of dry method cement rotary kiln, material is set to be warming up to 860 DEG C in the 5th grade of preheater；Then material is by dividing
Furnace is solved, calciner temperature is controlled at 960 DEG C, and the resolution ratio of calcium carbonate is 80% when control raw material enter kiln；Then material enters back
Rotary kiln clinkering zone, burning zone temperature is controlled at 1360 DEG C, and under the conditions of this temperature, material is existed by the time control of clinkering zone
5min；Then clinker discharging just obtains high strength low-carbon clinker of the invention after grate-cooler is cooling.
The present invention be based on the principle that
High strength low-carbon clinker lime saturation factor is substantially less than the stone of traditional portland clinker in the present invention
Grey saturation coefficient, LSF is 0.77 or so；Clinker silicon rate is significantly higher than traditional portland, and SR is 4.5 or so；Cement
The aluminium rate AR value of clinker is 1.0 or so.Incorporation trade waste A or B or C or their compound make clinker compared with low temperature
Generate that a kind of dicalcium silicate content is higher under the conditions of degree and crystal defect more than low-carbon cement clinker.The clinker has very high
Hydration activity and cracking early strength Characteristics of Development, prepared cement stability is qualified, the heat of hydration is low, cement mortar stream
Dynamic function admirable.Meanwhile nitrogen oxides (NOx) 40% or more discharge reduction, carbon dioxide (CO2) discharge reduction by 15% or so, it can
20% or more is reduced than coal consumption, reduces by 5% or more than power consumption.
Claims (4)
1. a kind of method using dry-process rotory kiln system production high strength low-carbon clinker,
It is characterized by: it is described production high strength low-carbon clinker raw material include calcareous raw material and
Clayey raw material and trade waste, the parts by weight of the raw material are as follows:
Calcareous raw material: 77；
Clayey raw material: 19；
The mixture of trade waste A and C: 4；
Production stage are as follows:
A, raw material is mixed and finely ground to obtain grinding material by each raw material weight number；
B, the resulting grinding material of step A enters the pre-heating system of dry method cement rotary kiln, makes in pre-heating system outlet
Material is warming up to 860 DEG C, obtains heating material；
C, the resulting heating material of step B enters dore furnace, 930 DEG C of the calciner temperature, and heating material passes through described point
Decomposing materials are obtained after solution furnace；
D, the resulting decomposing materials of step C enter the clinkering zone of dry method cement rotary kiln, and the temperature of the clinkering zone is 1360
DEG C, decomposing materials obtain clinker discharging after passing through the clinkering zone；
E, the resulting clinker discharging of step D obtains high strength low-carbon clinker after supercooling；The calcareous raw material is
Lime stone, wherein CaO content 49%；Use sandstone as clayey raw material, wherein SiO2Mass percentage content is 75%；
The trade waste A is the trade waste of phosphorous, titanium, barium, sulphur；The trade waste C be calcic, magnesium, silicon,
Zinc, copper, nickel, boron tailing；The mixture of trade waste A and C, A and C mixed proportion 5:1.
2. the method using dry-process rotory kiln system production high strength low-carbon clinker according to claim 1, special
Sign is: the raw material further includes irony correction material, and the parts by weight of the irony correction material are 0.01 ~ 9, the irony correction
Material is iron powder, iron ore of low ore grade, iron-containing tailing, mixture one or more of in pyrite slag, wherein Fe2O3Content 8 ~
30%。
3. utilizing dry-process rotory kiln system production high strength low-carbon described according to claim 1
The method of clinker, it is characterised in that: grinding material granularity requirements obtained by the step A
Tail over for 0.08mm square hole screen is 12%.
4. utilizing dry-process rotory kiln system production high strength low-carbon described according to claim 1
The method of clinker, it is characterised in that: pre-heating system is 5 grades of preheatings in the step B
Device system.
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| CN106277871A (en) * | 2016-08-01 | 2017-01-04 | 郑州市王楼水泥工业有限公司 | A kind of dry-process rotory kiln produces the production technology of high-sulfur calcium silicates low-carbon (LC) cement |
| CN109020271B (en) * | 2016-12-03 | 2020-10-27 | 河北京兰水泥有限公司 | High-strength cement |
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