CN106746802A - The system and method for sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste - Google Patents
The system and method for sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste Download PDFInfo
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- CN106746802A CN106746802A CN201710159952.1A CN201710159952A CN106746802A CN 106746802 A CN106746802 A CN 106746802A CN 201710159952 A CN201710159952 A CN 201710159952A CN 106746802 A CN106746802 A CN 106746802A
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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
- C04B7/32—Aluminous cements
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Abstract
The invention discloses the system and method that sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste, the system includes balancing reservoir, wet grinding machine, filter press, rotary kiln and hot water storage tank, red mud, desulfurated plaster, carbide slag, wet mud and industry water enter the homogenizing treatment of balancing reservoir and dealkalize, entering back into wet grinding machine carries out grinding, subsequently entering filter press carries out mechanism filter-pressing, solid material after press filtration carries out high-temperature calcination and obtains sulfoaluminate clinker into rotary kiln, sulfoaluminate clinker carries out combined grinding and obtains sulphate aluminium cement with desulfurated plaster into cement flour grinding machine, hot water provides heat for balancing reservoir in hot water storage tank.Realize the purpose for the municipal sludge of high-moisture percentage, Industrial Solid Waste being perfectly combined with production high-performance sulphate aluminium cement and being run on a production line.
Description
Technical field
Protected the present invention relates to chemical industry, the comprehensive utilization of resources of building material technique and large Industrial Solid Waste and municipal sludge and environment
Shield improvement field, and in particular to the system and method for sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste.
Background technology
Since reform and opening-up, with the quickening developed rapidly with urbanization process of China's industry, and then produce a large amount of each
Poisonous and hazardous industrial solid castoff is planted, and its quantity is also constantly rising.Large industrial solid castoff, it is referred to as large
Solid waste, refers to that China produces more than the 10000000 tons industrial solids larger to environment and security implication in the field of industrial production middle age
Waste, mainly including red mud, desulfurated plaster, metallurgical slag, CHARACTERISTICS OF TAILINGS SAND and gangue etc..The Eleventh Five-Year Plan period " large solid waste " is always raw
11,800,000,000 tons of yield, always increases 19,000,000,000 tons of storage newly.15,000,000,000 tons of " 12 " period " large solid waste " total growth, total increasing newly is deposited
Measure 27,000,000,000 tons.
Likewise, increase and popularization with China's urban population, municipal sewage treatment difficulty increasingly increases, according to
Official statistics, by by the end of September, 2015,3830 sewage treatment plants, up to 1.62 hundred million m have been built up in national cities and towns3The sewage of/d
Disposal ability, association sludge breaks through 30,000,000 tons/year.And sludge is that a kind of moisture content produced in sewage disposal process is very high
Discarded object, its composition mainly contains the floccule of various microorganisms and organic and inorganic particle composition, poisonous has containing substantial amounts of
Evil material, such as parasitic ovum, pathogenic microorganism and heavy metal ion.In general, the main component after sludge air drying is two
Silica, muscovite, alurgite, phengite, kaolin etc., these mineral crystals are mainly by the metals such as aluminium, iron, magnesium unit
Element composition, and be similar clay, the mineral matter with fines.Sludge pollution thing often has long term toxicity and can not
Degradability, if untreated and unordered discharge, will enter food chain by media such as big gas and water and soil, as dangerous two
Secondary source of pollution, causes harm to human health and ecology.China produces 30,000,000 ton of -4,000 ten thousand tons of moisture content left 80% every year
Right municipal sludge, domestic sludge yield is 35,000,000 tons within 2015.According to《Chinese specific resistance to filtration Market Report
(2016 editions)》Understand, national wet mud harmless treatment rate average value in 2015 be also exist between 32%, with actual demand compared with
Big gap.Therefore, in sewage treatment area, sludge treatment also turns into current a great problem.
Conventional Sludge Disposal Techniques mainly have anaerobic digestion, aerobic fermentation, deep dehydration, heat drying, lime steady at present
Fixed, burning and carbonization etc..But these technologies can not thoroughly, simultaneously realize the minimizing of sludge, stabilisation, it is innoxious with
Resource, always produces many contingency questions, such as the big, technical operating procedure that consumes energy produces effluvium pollution environment, burns tail
The problems such as gas produces toxic gases such as dioxin etc..
Currently in order to carry out recycling to sludge, it is necessary to first carry out deep dehydration to sludge, by the reduction of its moisture content
To 50% or so, but device for dehydrating sladge waste investment is high, and later stage operation and maintenance cost is also higher and causes great lot of water resources wave
Take.
The content of the invention
In recent years, sulphate aluminium cement turns into the new direction of domestic and international cement industry research and development, and its clinker has
The required heat consumption of production is low, early strength is high, setting time is short, fabulous freeze-thaw resistance, a series of low superiority of basicity
Can, now it is widely used in repairing, rush construction engineering, winter construction engineering, anticorrosive engineering.The large solid waste of China is dirty with city
Mud volume of cargo in storage is huge, high using difficulty, in order that the city wet mud that application is few at present, volume of cargo in storage is extremely abundant, red mud with
Desulfurated plaster is fully used, and is used to early strong, the excellent properties such as hard, low alkalinity soon the hydraulics required for producing architectural engineering
Property Binder Materials.The present invention is based on the physics between discarded object, chemical bond using complementary, there is provided utilize municipal waste and work
Industry solid waste prepares the system and method for sulphate aluminium cement, realizes the municipal sludge of high-moisture percentage, Industrial Solid Waste and production
High-performance sulphate aluminium cement is perfectly combined the purpose run on a production line.
To achieve the above object, the technical scheme is that：
The method that sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste, the wet dirt that municipal sewage plant produces
Mud is fed directly to balancing reservoir without dehydration to carry out being mixed to form mixed liquor with red mud, desulfurated plaster, carbide slag and industry water, mixes
The dry weight ratio for closing wet mud, red mud, desulfurated plaster and carbide slag in liquid is 5~10:15~30:10~20:40~60, keep mixed
It is 1 to close the solid-to-liquid ratio in liquid:3~1:4, homogenizing treatment and dealkalize, homogenizing again after wet grinding is carried out to the mixed liquor
Treatment temperature is 60~70 DEG C, and the material after homogenizing treatment carries out wet grinding, then is dehydrated by mechanism filter-pressing, then by press filtration
Material afterwards carries out high-temperature calcination and obtains sulfoaluminate clinker.
Wherein, the desulfurated plaster before production clinker is added by above-mentioned dry weight ratio, the desulfurization stone after production clinker
Routinely technique is added cream.
The water content of heretofore described wet mud is 99%.Due to containing substantial amounts of aluminium, iron, magnesium in the wet mud of city
Deng nonmetalloids such as metallic element and silicon, can be carried out with the element such as the calcium in red mud, carbide slag and desulfurated plaster, sulphur, aluminium
Chemical complementation, is allowed to complementation and goes out the necessary raw material of sulphate aluminium cement, so as to make in chemical constitution using city wet mud, red
Mud, carbide slag and desulfurated plaster prepare sulphate aluminium cement and are possibly realized.Meanwhile, the water content in the wet mud of city is 99%,
Contain a large amount of water i.e. in the wet mud of city, solid-liquid is carried out using the water and red mud and desulfurated plaster solid waste of city wet mud
Mixing, realizes the complementation of raw material physical aspect, not only eliminates the dewatering process of city wet mud treatment, reduces city wet mud
Dehydration expense and energy consumption, and reduce solid material homogenizing treatment enter hydraulic art inflow, saved substantial amounts of water resource；
Realize that the dewatering process of city wet mud treatment is complementary with the technique for entering hydraulic art of solid material homogenizing treatment, saved technique
Flow, reduces the cost of waste treatment, while high performance sulphate aluminium cement can also be obtained.
It is 1 that the present invention keeps the solid-to-liquid ratio in balancing reservoir:3~1:4, wet grinding can be made fully to carry out, both control thing
Material fineness, reduces grinding power consumption again.Homogenizing treatment temperature can make slurries remove soluble impurity and former red mud for 60~70 DEG C
Dealkalize.
The purpose of heretofore described homogenizing treatment is to remove the soluble impurity in material, and removes the oxygen in red mud
Change sodium and potassium oxide.
Heretofore described dry weight is the weight that material goes after water completely.
Heretofore described wet grinding is the grinding that material is carried out in water.
Heretofore described industry water is by processing applicable waste water up to standard or reclaimed water etc..
Heretofore described desulfurated plaster is the by-product gypsum after power plant desulfurization.
Heretofore described red mud is the waste red mud of alumina producer discharge.
Preferably, the pressing filtering liquid after press filtration carries out lime sterilization.
It is further preferred that the solid residue after lime sterilization is delivered to balancing reservoir.
It is further preferred that the clear liquid after lime sterilization is by the thermal source after heating as balancing reservoir.
Preferably, the composition after press filtration, SiO210~25% (wt%) are accounted for, CaO accounts for 30~50% (wt%), Al2O3Account for 15
~30% (wt%), Fe2O3Account for 5~15% (wt%), SO3Account for 15~35% (wt%).
It is further preferred that basicity factor CmIt is 0.95~0.98.
Wherein, the formula of basicity factor is：
CaO, SiO in formula2、Al2O3、Fe2O3、TiO2、SO3Percentage by weight respectively shared by corresponding chemical composition is (public
Described CaO, SiO beyond formula2、Al2O3、Fe2O3、TiO2、SO3Respectively corresponding chemical composition).
Preferably, the fineness for carrying out the material after wet grinding is less than 0.20mm.
Preferably, using coal dust firing produce energy as the high-temperature calcination thermal source.
Preferably, 1250 DEG C~1350 DEG C of the calcining heat of the high-temperature calcination, 0.5~1h of calcination time.
It is further preferred that the high-temperature flue gas that the burning is produced carry out waste heat recovery.Waste heat recovery of the present invention
Refer to, to recirculated water, recirculated water is changed into hot water by heat transmission equipment by the heat exchange in high-temperature flue gas, realization utilizes high temperature
Heat energy in flue gas.
Still more preferably, by the flue gas after waste heat recovery by being discharged after dedusting.Prevent solid granule from entering
In air, the reduction of air quality is caused.
Still more preferably, the thermal source for being processed as homogenizing by the hot water after waste heat recovery.The energy can be improved
Effectively utilize, reduce production cost.
This method process is simple, equipment are reliable, safe and scientific, can thoroughly, simultaneously realize that the city of high-moisture percentage is dirty
Minimizing, stabilisation, the innoxious and resource of mud and large solid waste, and great lot of water resources and the energy can be saved, so as to can produce
The huge environmental benefit of life, economic benefit and social benefit.
The system that sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste, including balancing reservoir, wet grinding machine, pressure
Filter, rotary kiln and hot water storage tank, red mud, desulfurated plaster, carbide slag, wet mud and industry water carry out powder into wet grinding machine
Mill, enters back into the homogenizing treatment of balancing reservoir and dealkalize, and subsequently entering filter press carries out mechanism filter-pressing, the solid material after press filtration
High-temperature calcination being carried out into rotary kiln and obtaining sulfoaluminate clinker, hot water provides heat for balancing reservoir in hot water storage tank.
Heretofore described waste-heat recovery device is indirect type heat exchanger.Such as shell-and-tube heat exchanger etc..
Preferably, including lime sterilization pool, the hot water after being heated to balancing reservoir flow to lime sterilization pool.
It is further preferred that the pressing filtering liquid of filter press outflow flow to lime sterilization pool.
It is further preferred that the solid residue in lime sterilization pool is delivered to balancing reservoir.
Preferably, including heat exchanger and water pump, after delivery to the heat exchanger heating after water pump will be heated to balancing reservoir
Return to hot water storage tank.
It is further preferred that the clear liquid in lime sterilization pool is delivered to heat exchanger heating by water pump, hot water is then sent to
Storage tank.The impurity blocking pipeline in recirculated water is prevented, prevents from reducing heat transfer effect.
It is further preferred that the high-temperature flue gas of the generation of rotary kiln carry out waste heat recovery into heat exchanger.
Still more preferably, including deduster, dedusting is carried out into deduster by the high-temperature flue gas of waste heat recovery.
Beneficial effects of the present invention are：
1st, the present invention can produce sulphate aluminium cement, can increase substantially large Industrial Solid Waste with municipal sludge again
Product added value, significantly reduces the control difficulty of technique；
2nd, this invention greatly reduces dehydrating municipal sludge expense and energy consumption；
3rd, the present invention makes full use of the moisture in wet mud based on the physics between discarded object, chemical bond using complementary
Mix large solid waste dispensing, save great lot of water resources；
4th, high-temperature tail gas UTILIZATION OF VESIDUAL HEAT IN of the present invention, more energy efficient environmental protection；
5th, the present invention fundamentally can make large solid waste and reducing urban sludge, stabilisation, nothing simultaneously to a greater degree
Evilization and resource.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
The system that sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste, including balancing reservoir, wet grinding machine, pressure
Filter, rotary kiln, cement flour grinding machine and hot water storage tank, red mud, desulfurated plaster, carbide slag, wet mud and industry water enter wet method
Flour mill carries out grinding, enters back into the homogenizing treatment of balancing reservoir and dealkalize, and subsequently entering filter press carries out mechanism filter-pressing, press filtration
Solid material afterwards carries out high-temperature calcination and obtains sulfoaluminate clinker into rotary kiln, and sulfoaluminate clinker enters with desulfurated plaster
Cement flour grinding machine carries out combined grinding and obtains sulphate aluminium cement, and hot water provides heat for balancing reservoir in hot water storage tank.
Described waste-heat recovery device is shell-and-tube heat exchanger.
Also include lime sterilization pool, the hot water after being heated to balancing reservoir flow to lime sterilization pool.
The pressing filtering liquid of filter press outflow flow to lime sterilization pool.
Solid residue in lime sterilization pool is delivered to balancing reservoir.
Also include heat exchanger and water pump, the clear liquid in lime sterilization pool is delivered to heat exchanger heating, is then return to by water pump
Hot water storage tank.The impurity blocking pipeline in recirculated water is prevented, prevents from reducing heat transfer effect.
The high-temperature flue gas that rotary kiln is produced carry out waste heat recovery into heat exchanger.
Also include deduster, dedusting is carried out into deduster by the high-temperature flue gas of waste heat recovery.
Its technological process is：As shown in figure 1,
1. former red mud, desulfurated plaster are sent into balancing reservoir by proportioning through gravity system, while being passed through at municipal sewage
High-moisture percentage wet mud after reason factory disinfection mixes with red mud, desulfurated plaster, and mixed liquor is stirred, and makes solid-liquid ratio
Control is 1:3~1:Between 4, wherein, the dry weight ratio of wet mud, red mud, desulfurated plaster and carbide slag is 5~10 in mixed liquor:
15~30:10~20:40~60, and there is standby industry water (by treatment applicable waste water up to standard or reclaimed water etc.) to ensure solid-to-liquid ratio
Example reaches requirement；Mixed liquor grinding is made the fineness of material be less than 0.20mm by wet grinding machine.
2. the material after grinding is passed through balancing reservoir, and high-temperature-hot-water is passed through balancing reservoir outside, temperature in control balancing reservoir
Degree maintains 60 DEG C~70 DEG C, is then stirred dealkalize, is corrected by composition, obtains the uniform slurries of composition.
3. the material after the treatment of step 2 homogenizing is passed through into mechanical filter press press filtration into wet stock, while can in removing raw material
Solubility impurity.Pressing filtering liquid sends into lime sterilization pool together with balancing reservoir backwater, and foldback returns balancing reservoir to the solid residue after treatment again
Used as dispensing；Clear liquid after treatment is pumped into waste heat utilization equipment and generates hot water by backwater.
4., by mixing, wet grinding, homogenizing, mechanism filter-pressing, the Main Ingredients and Appearance for making raw material is SiO2Account for 10~25%
(wt%), CaO accounts for 30~50% (wt%), Al2O3Account for 15~30% (wt%), Fe2O3Account for 5~15% (wt%), SO3Account for 15~
35% (wt%), basicity factor CmMeet between 0.95~0.98,
CaO, SiO in formula2、Al2O3、Fe2O3、TiO2、SO3Percentage by weight respectively shared by corresponding chemical composition；
5. the raw material after being dehydrated are through in desiccation (or direct) feeding rotary kiln, carrying out high-temperature calcination, calcining heat 1250
DEG C~1350 DEG C, 0.5~1h of calcination time.
6. coal dust is sprayed into rotary kiln burner carries out oxidizing atmosphere burning.
7. the flue gas heat that rotary kiln is produced is reclaimed using flue gas waste heat recovery equipment, to produce hot water, be used to homogenizing
Heat in pond.
8. by waste heat recovery utilizing equipment kiln exit gas by qualified discharge after cleaner.
9. the sulfoaluminate clinker for being produced in rotary kiln, with calcium sulphoaluminate (3CaO3Al2O3·CaSO4) and dicalcium silicate
(2CaO·SiO2) and iron phase be main mineral.Finally, clinker is mixed with desulfurated plaster, wherein shared by desulfurated plaster
Quality (clinker with desulfurated plaster gross mass) fraction 8%, grinding is into cement in feeding cement grinding mill.
Embodiment 1：
It is prepared using said system and technique, its design parameter, result of calculation and detection are as follows：After mixing matching
The quality meter of solidliquid mixture matter, the dry weight ratio of wet mud, red mud, desulfurated plaster and carbide slag is 10:30:20:40.By machinery
Dehydration raw material are directly conveyed into calcined by rotary kiln, and calcining heat is 1310 DEG C, and calcination time is 60 minutes, and now dioxin etc. has
Malicious harmful substance can be eliminated well.Then flue gas is recycled through waste heat recovery apparatus to heat.Finally to flue gas
Dedusting, fume treatment are carried out, the flue gas after treatment does not find the harmful substances such as dioxin after testing.Through cement standard cement mortar strength
Experiment, 3 days and 28 days compression strength are respectively 47.8Mpa and 60.5Mpa.
Embodiment 2：
It is prepared using said system and technique, its design parameter, result of calculation and detection are as follows：After mixing matching
The quality meter of solidliquid mixture matter, the dry weight ratio of wet mud, red mud, desulfurated plaster and carbide slag is 5:15:10:60.By machinery
Dehydration raw material are directly conveyed into calcined by rotary kiln, and firing temperature is 1280 DEG C, and calcination time is 60 minutes.Flue gas warp after treatment
Detection does not find the harmful substances such as dioxin.Tested through cement standard cement mortar strength, 3 days and 28 days compression strength are respectively
47.4Mpa and 56.2Mpa.
Embodiment 3：
It is prepared using said system and technique, its design parameter, result of calculation and detection are as follows：After mixing matching
The quality meter of solidliquid mixture matter, the dry weight ratio of wet mud, red mud, desulfurated plaster and carbide slag is 8:23:15:54.By machinery
Dehydration raw material are directly conveyed into calcined by rotary kiln, and firing temperature is 1300 DEG C, and calcination time is 45 minutes.Flue gas warp after treatment
Detection does not find the harmful substances such as dioxin.Tested through cement standard cement mortar strength, 3 days and 28 days compression strength are respectively
47.6Mpa and 58.4Mpa.
Embodiment 4：
It is prepared using said system and technique, its design parameter, result of calculation and detection are as follows：After mixing matching
The quality meter of solidliquid mixture matter, the dry weight ratio of wet mud, red mud, desulfurated plaster and carbide slag is 9.5:20.5:17.5:
52.5.Mechanical dehydration raw material are directly conveyed into calcined by rotary kiln, firing temperature is 1300 DEG C, and calcination time is 45 minutes.Place
Flue gas after reason does not find the harmful substances such as dioxin after testing.Tested through cement standard cement mortar strength, 3 days and 28 days pressure resistances
Degree is respectively 47.9Mpa and 60.4Mpa.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to invention protection domain
Limitation, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not required to
The various modifications or deformation made by paying creative work are still within the scope of the present invention.
Claims (10)
1. the method that sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste, it is characterized in that, is produced from municipal sewage plant
Raw wet mud is fed directly to balancing reservoir and is mixed to form with red mud, desulfurated plaster, carbide slag and industry water without dehydration
Mixed liquor, the dry weight ratio of wet mud, red mud, desulfurated plaster and carbide slag is 5~10 in mixed liquor:15~30:10~20:40~
60, it is 1 to keep the solid-to-liquid ratio in mixed liquor:3~1:4, homogenizing treatment again is carried out after wet grinding to the mixed liquor simultaneously
Dealkalize, homogenizing treatment temperature is 60~70 DEG C, and the material after homogenizing treatment carries out wet grinding, then is dehydrated by mechanism filter-pressing,
Then the material after press filtration is carried out into high-temperature calcination and obtains sulfoaluminate clinker.
2. the method for claim 1, it is characterized in that, it is sterilized that the pressing filtering liquid after press filtration carries out lime.
3. method as claimed in claim 2, it is characterized in that, the solid residue after lime sterilization is delivered to balancing reservoir；
Or, the clear liquid after lime sterilization is by the thermal source after heating as balancing reservoir.
4. the method for claim 1, it is characterized in that, the composition after press filtration, SiO210~25% (wt%) are accounted for, CaO accounts for 30
~50% (wt%), Al2O3Account for 15~30% (wt%), Fe2O3Account for 5~15% (wt%), SO3Account for 15~35% (wt%)；It is excellent
Choosing, basicity factor CmIt is 0.95~0.98.
5. method as claimed in claim 1, it is characterized in that, the energy produced using coal dust firing is used as the high-temperature calcination
Thermal source；
Preferably, the high-temperature flue gas that the burning is produced carry out waste heat recovery.
6. method as claimed in claim 5, it is characterized in that, by the flue gas after waste heat recovery by being discharged after dedusting；
Or, the thermal source processed as homogenizing by the hot water after waste heat recovery.
7. the system that sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste, it is characterized in that, including balancing reservoir, wet method powder
Grinding machine, filter press, rotary kiln and hot water storage tank, red mud, desulfurated plaster, carbide slag, wet mud and industry water enter wet grinding
Machine carries out grinding, enters back into the homogenizing treatment of balancing reservoir and dealkalize, and subsequently entering filter press carries out mechanism filter-pressing, after press filtration
Solid material carries out high-temperature calcination and obtains sulfoaluminate clinker into rotary kiln, and hot water provides heat for balancing reservoir in hot water storage tank
Amount.
8. system as claimed in claim 7, it is characterized in that, including lime sterilization pool, the hot water after being heated to balancing reservoir flow to
Lime sterilization pool；
Preferably, the pressing filtering liquid of filter press outflow flow to lime sterilization pool；
Preferably, the solid residue in lime sterilization pool is delivered to balancing reservoir.
9. the system as described in claim 7 or 8 is any, it is characterized in that, including heat exchanger and water pump, water pump will add to balancing reservoir
Hot water storage tank is returned to after delivery to heat exchanger heating after heat；
Preferably, water pump returns to hot water storage tank after the clear liquid in lime sterilization pool is delivered into heat exchanger heating；
Preferably, delivery to the heat exchanger after water pump will be heated to balancing reservoir is heated, and is then sent to hot water storage tank；
Preferably, the high-temperature flue gas of the generation of rotary kiln carry out waste heat recovery into heat exchanger.
10. system as claimed in claim 9, it is characterized in that, including deduster, enter by the high-temperature flue gas of waste heat recovery and remove
Dirt device carries out dedusting.
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| CN107139325A (en) * | 2017-06-26 | 2017-09-08 | 洛阳理工学院 | A kind of method that wet grinding cement prepares ready-mixed concrete |
| CN108483958A (en) * | 2018-06-07 | 2018-09-04 | 山东大学 | A kind of resource utilization method of incineration of refuse flyash and Industrial Solid Waste |
| CN108483958B (en) * | 2018-06-07 | 2020-04-17 | 山东大学 | Resource utilization method of waste incineration fly ash and industrial solid waste |
| CN109530392A (en) * | 2018-11-15 | 2019-03-29 | 中南大学 | A kind of method that applicable industry waste reduces red mud alkalinity |
| CN109530392B (en) * | 2018-11-15 | 2020-05-26 | 中南大学 | Method for reducing alkalinity of red mud by using industrial wastes |
| CN111233356A (en) * | 2020-03-10 | 2020-06-05 | 山东大学 | Method and system for preparing sulphoaluminate cement from all solid waste of aluminum ash pretreatment |
| CN111233356B (en) * | 2020-03-10 | 2021-04-06 | 山东大学 | Method and system for preparing sulphoaluminate cement from all solid waste of aluminum ash pretreatment |
| WO2022142137A1 (en) * | 2020-12-29 | 2022-07-07 | 山东大学 | Red mud-based cementing material, red mud-based lightweight aggregate, red mud-based lightweight aggregate concrete and preparation method therefor |
| CN114804677A (en) * | 2022-04-07 | 2022-07-29 | 国能生物发电集团有限公司 | System and method for producing high-silicon type sulphoaluminate cement by using biomass ash |
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