CN110395925A - The preparation method and application of material containing metakaolin - Google Patents
The preparation method and application of material containing metakaolin Download PDFInfo
- Publication number
- CN110395925A CN110395925A CN201910815932.4A CN201910815932A CN110395925A CN 110395925 A CN110395925 A CN 110395925A CN 201910815932 A CN201910815932 A CN 201910815932A CN 110395925 A CN110395925 A CN 110395925A
- Authority
- CN
- China
- Prior art keywords
- cement
- metakaolin
- material containing
- containing metakaolin
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses the preparation methods of the material containing metakaolin, comprising: recirculating fluidized bed will be added containing kaolinic raw material, and make containing kaolinic raw material and a coal-fired combust, temperature is 600~900 DEG C in control loop fluidized bed；Clinker and flyash are collected to get the material containing metakaolin；It wherein, is 2000~3500kcal/kg containing kaolinic raw material and coal-fired mean calorie.The present invention also provides cement additive, cement mixture, cement admixture and ground polymers cement formula.The present invention not only solves the environmental issue of steam power plant's flyash, clinker, moreover it is possible to effectively increase economic benefit.
Description
Technical field
The present invention relates to the preparation methods of the material containing metakaolin.It is more particularly related to use recycle stream
Change bed and prepares the application containing the material of metakaolin and the material.
Background technique
Thermal power plant circulating fluidized bed boiler uses fluidized combustion, and primary structure includes combustion chamber (including emulsion zone and dilute
Phase region) and circulation melt down (including high-temperature gas-solid separator and revert system) two large divisions.Recirculating fluidized bed generate clinker and
Flyash can cause serious pollution to the environment, although occurring some sides for being capable of handling both wastes at present
Method is such as processed as brick or is directly used as construction material, but as a whole, however it remains the lower problem of utilization efficiency.Therefore, urgently
A kind of technological means that can alleviate the above problem need to be designed.
Summary of the invention
It is an object of the present invention to provide a kind of preparation method and application of material containing metakaolin, utilize recycle stream
The operating temperature for changing bed is exactly in the temperature range to form metakaolin, and addition contains during recirculating fluidized bed work
Kaolinic raw material improves thermoelectricity so that recirculating fluidized bed has both generating function and prepares the function of the material containing metakaolin
The comprehensive benefit of factory.
In order to realize these purposes and other advantages according to the present invention, the preparation side of the material containing metakaolin is provided
Method, comprising:
The preparation method of material containing metakaolin characterized by comprising
Recirculating fluidized bed will be added containing kaolinic raw material, make containing kaolinic raw material and a coal-fired combust, control
Temperature is 600~900 DEG C in recirculating fluidized bed processed；
Clinker is collected to get the material containing metakaolin；
It wherein, is 2000~3500kcal/kg containing kaolinic raw material and coal-fired mean calorie.
Preferably, the preparation method of the material containing metakaolin, fire coal include lignite, and the calorific value of lignite is not small
In 2000kcal/kg.
Preferably, the preparation method of the material containing metakaolin, includes gangue containing kaolinic raw material,
The calorific value of gangue is not less than 800kcal/kg.
Preferably, the preparation method of the material containing metakaolin includes the female page of oil containing kaolinic raw material
The calorific value of rock slag, oil shale slag is not less than 500kcal/kg.
Preferably, the preparation method of the material containing metakaolin collects clinker and flyash.
Preferably, the preparation method of the material containing metakaolin, further includes:
Material powder containing metakaolin is milled to fineness not less than 300 mesh, specific surface area is not less than 500m2/kg。
The present invention also provides cement additives, and including the material containing metakaolin, cement additive is in cement
Middle additive amount is the 5~35% of cement quality.
The present invention also provides cement mixtures, including the material containing metakaolin and slag powders, steel-making slag powder
One or both of；
Mass ratio of the material containing metakaolin in cement mixture is 5~60%.
The present invention also provides concrete admixture, grey including the material containing metakaolin and conventional pulverized coal,
One of slag powders, steel-making slag powder, two or more；
Mass ratio of the material containing metakaolin in cement admixture is 5~60%.
The present invention also provides ground polymers cement, including the material containing metakaolin, steel-making slag powder, slag powders, water
Mud, alkali-activator；
Mass ratio of the material containing metakaolin in ground polymers cement is 5~60%.
The present invention is include at least the following beneficial effects:
Implementation of the invention can rely on original circulating fluidised bed apparatus, not need to build calcination system again, only need
It slightly to adjust, can be made containing metakaolin on the raw material of the circulating fluidized bed system of built steam power plant and calcining control
Material, not only solve the environmental issue of gangue, flyash, clinker, economic benefit can also be increased.It certainly also include pressing
The circulating fluidized bed system of the newly-built steam power plant of the principle of the invention, runnability is more stable, and yield is bigger, and economy is more preferable.
Cement additive made from material containing metakaolin of the invention, cement admixture and ground polymers cement have good
Good comprehensive performance, can be used as good construction material.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
In a kind of technical solution, the preparation method of the material containing metakaolin, comprising:
The preparation method of material containing metakaolin characterized by comprising
Recirculating fluidized bed will be added containing kaolinic raw material, make containing kaolinic raw material and a coal-fired combust, control
Temperature is 600~900 DEG C in recirculating fluidized bed processed；
Clinker is collected to get the material containing metakaolin；
It wherein, is 2000~3500kcal/kg containing kaolinic raw material and coal-fired mean calorie.Temperature is further excellent
It is selected as 650~850 DEG C.Refer to the mixture containing kaolin ingredient, mineral, waste etc. containing kaolinic raw material.Burning
Time is preferably 30~50 minutes.Before recirculating fluidized bed is added, raw material is homogenized, preferred homogenization coefficient be 8 with
On.Silica alumina ratio containing kaolinic raw material is 1.5~2.5, preferably greater than 2.Can also include containing kaolinic raw material
Lime stone, so that calcium sulfur ratio is not less than 1.5, preferably greater than 2.
In another technical solution, the preparation method of the material containing metakaolin, fire coal includes lignite, lignite
Calorific value be not less than 2000kcal/kg.
In another technical solution, the preparation method of the material containing metakaolin contains kaolinic raw material
Including gangue, the calorific value of gangue is not less than 800kcal/kg.Gangue is Coaseries kaolin, is coal mining process and coal washing
The solid waste discharged in journey, not only accumulation land occupation, but also spontaneous combustion pollution air or fire can also be caused, pollute atmosphere, bastard coal
Stone air storage can generate a large amount of fugitive dusts, and this is mainly due to the gangues in ground stacking to be exposed to the sun and rain for a long time
Afterwards, it will weathering crushes.In addition, can be disintegrated after gangue water suction, thus be easy to generate dust, it under the action of the forces of the wind, will
The quality of mining area atmosphere can be deteriorated.Using gangue as raw material, there is biggish benefit to environmental protection.In another technical solution
In, the preparation method of the material containing metakaolin includes oil shale slag, oil shale slag containing kaolinic raw material
Calorific value be not less than 500kcal/kg.
In another technical solution, the preparation method of the material containing metakaolin collects clinker and flyash.
In another technical solution, the preparation method of the material containing metakaolin, further includes:
Material powder containing metakaolin is milled to fineness not less than 300 mesh, specific surface area is not less than 500m2/kg.Preferably
500 mesh and 700m2/kg。
The present invention also provides cement additives, and including the material containing metakaolin, cement additive is in cement
Middle additive amount is the 5~35% of cement quality.
The present invention also provides cement mixtures, including the material containing metakaolin and slag powders, steel-making slag powder
One or both of；
Mass ratio of the material containing metakaolin in cement mixture is 5~60%.
The present invention also provides concrete admixture, grey including the material containing metakaolin and conventional pulverized coal,
One of slag powders, steel-making slag powder, two or more；
Mass ratio of the material containing metakaolin in cement admixture is 5~60%.Conventional pulverized coal ash is existing skill
The flyash of art, the flyash that non-present invention obtains.Mass ratio is preferably 10~15%.
The present invention also provides ground polymers cement, including the material containing metakaolin, steel-making slag powder, slag powders, water
Mud, alkali-activator；
Mass ratio of the material containing metakaolin in ground polymers cement is 5~60%.Alkali-activator include caustic alkali,
Waterglass, saltcake etc..
It is illustrated below with embodiment and comparative example:
Embodiment 1:
When certain circulating fluidized bed heat-power factory operates normally, 20~25% kaolin raw ores, mean calorie are added in fire coal
2400~2800Kcal/kg, fire box temperature bottom are 820~850 DEG C, and top is 750~810 DEG C, and cyclonic separation room temperature is
720~790 DEG C, boiler room temperature is 150~640 DEG C, and produced clinker detects specific surface area 520m through 40 minutes grindings of small mill2/
kg。
Through detecting, metakaolin content, detected value Ca (OH) are detected after clinker is levigate2Absorption value is greater than 350mg/g.In
10% pulverized slag is added in 425 cement, and carries out strength comparison test with pure 425 cement, compared to pure 425 cement, adds furnace
After ground-slag, 3 days intensity improves 13~17%, 28 days intensity and improves 8~12%.
Embodiment 2:
When certain circulating fluidized bed heat-power factory operates normally, using lignite and somewhere gangue ingredient, selected lignite calorific value
3100Kcal/kg, selected gangue calorific value 1250Kcal/kg, mean calorie is controlled in 2400~2900Kcal/kg after coal blending,
Fire box temperature bottom is 810~845 DEG C, and top is 740~800 DEG C, and cyclonic separation room temperature is 705~775 DEG C, boiler room temperature
Degree is 140~630 DEG C, and produced clinker detects specific surface area 520m through 40 minutes grindings of small mill2/kg。
Through detecting, metakaolin content detection value Ca (OH) in pulverized slag2Absorption value is greater than 390mg/g.In 425 cement
10% pulverized slag is added, and carries out strength comparison test with pure 425 cement, compared to pure 425 cement, after adding pulverized slag, 3 days
Intensity improves 14~16%, 28 days intensity and improves 9~11%.
Embodiment 3:
Gangue in embodiment 2 is replaced with into oil shale, 630~680Kcal/kg of calorific value of oil shale, coal blending
In 2300~2750Kcal/kg, strength test effect is close with embodiment 2 for mean calorie control afterwards.
Embodiment 4:
Compared to embodiment 1, embodiment 4 is modified in that, is collected simultaneously clinker and flyash, grinding 35 minutes.
Through detecting, metakaolin content detection value Ca (OH) in pulverized slag and flyash mixed-powder2Absorption value is greater than
250mg/g increases effect to the intensity of 425 cement and is slightly below embodiment 1.
Embodiment 5:
Compared to embodiment 1, embodiment 5 is modified in that, 20 minutes comparative tests of clinker grinding time compare table in 20 minutes
Area 350m2/kg。
Through detecting, metakaolin content detection value Ca (OH) in pulverized slag2Absorption value is less than 150mg/g, to 425 cement
Enhanced strength effect: 3 days intensity declines intensity decline 1~3% in 2~4%, 28 days.
It is compared with embodiment 1, with clinker through 40 minutes grindings of small mill, detects specific surface area 520m2/ kg is compared, powder
Time consuming 20 minutes, without reinforcing effect.It is compared by multi-group data, specific surface area is lower than 500m2When/kg, reinforcing effect is not
Obviously.
Embodiment 6:
When certain circulating fluidized bed heat-power factory operates normally, fire coal 3000~3500Kcal/kg of calorific value used, fire box temperature bottom
Portion be 920~960 DEG C, top be 790~820 DEG C, cyclonic separation room temperature be 745~810 DEG C, boiler room temperature be 150~
690 DEG C, produced clinker detects specific surface area 520m through 40 minutes grindings of small mill2/kg。
Through detecting, metakaolin content detection value Ca (OH) in pulverized slag2Absorption value is less than 150mg/g, to 425 cement
Intensity increases effect: 3 days intensity declines intensity decline 7~9% in 11~13%, 28 days, compares by multi-group data, fire box temperature
When more than 900 DEG C, or even decline unobvious to the reinforcing effect of cement.
Embodiment 7:
Cement examination is made with the ratio mixing in table 1 in pulverized slag and cement that embodiment 1 is obtained, slag powders, steel-making slag powder
Block, by intensity detection, as a result such as following table.
1 cement admixture activity comparative test result of table
If in upper table as can be seen that when with slag powders and steel-making slag powder substitution cement, if not containing the furnace of metakaolin
The admixture of ground-slag, mixture activity is relatively low, and when the addition content increase of the pulverized slag containing metakaolin simultaneously, mixture activity
Can reduce, fix plant slag at certain, when fixed grinding fineness, the optimum mix amount of pulverized slag is 10~15%, certainly this
Volume is mainly that the content of metakaolin in material has direct relation.
By Examples 1 to 6 it is found that the application contains kaolinic raw material, In using addition in the raw material of recirculating fluidized bed
Under the premise of burning situation without significantly alterring recirculating fluidized bed, kaolinic raw material and a coal-fired combust will be contained,
Clinker and/or flyash are collected, has obtained the material containing metakaolin, which can significantly improve the intensity of 425 cement.By
Embodiment 7 it is found that the material can be used for improve cement in mixing material addition content, increase the activity of concrete admixture.This
The material containing metakaolin of application can also manufacture ground polymers cement, as one kind of eco-cement, have economical well
And ecological benefits.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (10)
1. the preparation method of the material containing metakaolin characterized by comprising
Recirculating fluidized bed will be added containing kaolinic raw material, make containing kaolinic raw material and a coal-fired combust, control follows
Temperature is 600~900 DEG C in ring fluidized bed；
Clinker is collected to get the material containing metakaolin；
It wherein, is 2000~3500kcal/kg containing kaolinic raw material and coal-fired mean calorie.
2. the preparation method of the material containing metakaolin as described in claim 1, which is characterized in that fire coal includes lignite, brown
The calorific value of coal is not less than 2000kcal/kg.
3. the preparation method of the material containing metakaolin as claimed in claim 1 or 2, which is characterized in that containing kaolinic
Raw material includes gangue, and the calorific value of gangue is not less than 800kcal/kg.
4. the preparation method of the material containing metakaolin as claimed in claim 1 or 2, which is characterized in that containing kaolinic
Raw material includes oil shale slag, and the calorific value of oil shale slag is not less than 500kcal/kg.
5. the preparation method of the material containing metakaolin as described in claim 1, which is characterized in that collect clinker and fine coal
Ash.
6. the preparation method of the material as claimed in claim 1 or 5 containing metakaolin, which is characterized in that further include:
Material powder containing metakaolin is milled to fineness not less than 300 mesh, specific surface area is not less than 500m2/kg。
7. cement additive, which is characterized in that including any material containing metakaolin of claim 1~6, cement adds
Adding agent additive amount in cement is the 5~35% of cement quality.
8. cement mixture, which is characterized in that including any material and mine containing metakaolin of claim 1~6
One or both of ground-slag, steel-making slag powder；Mass ratio of the material containing metakaolin in cement mixture is 5~60%.
9. concrete admixture, which is characterized in that including any described material containing metakaolin of claim 1~6 and
One of conventional pulverized coal ash, slag powders, steel-making slag powder, two or more；Material containing metakaolin is in cement admixture
Mass ratio is 5~60%.
10. ground polymers cement, which is characterized in that including any material containing metakaolin of claim 1~6, steel slag
Powder, slag powders, cement, alkali-activator；Mass ratio of the material containing metakaolin in ground polymers cement is 5~60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815932.4A CN110395925A (en) | 2019-08-30 | 2019-08-30 | The preparation method and application of material containing metakaolin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815932.4A CN110395925A (en) | 2019-08-30 | 2019-08-30 | The preparation method and application of material containing metakaolin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110395925A true CN110395925A (en) | 2019-11-01 |
Family
ID=68329556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910815932.4A Pending CN110395925A (en) | 2019-08-30 | 2019-08-30 | The preparation method and application of material containing metakaolin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110395925A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098282A (en) * | 2013-04-03 | 2014-10-15 | 神华集团有限责任公司 | Geopolymer composition, geopolymer material and preparation method of geopolymer material |
| CN104098281A (en) * | 2013-04-03 | 2014-10-15 | 神华集团有限责任公司 | Geopolymer composition, geopolymer material and preparation method thereof |
| CN107746212A (en) * | 2017-10-18 | 2018-03-02 | 浙江大学 | Modified enhanced ground oligomer gel material of one kind and preparation method thereof |
| CN108275899A (en) * | 2018-03-09 | 2018-07-13 | 济南大学 | A kind of alkali-excited cement and preparation method thereof |
-
2019
- 2019-08-30 CN CN201910815932.4A patent/CN110395925A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098282A (en) * | 2013-04-03 | 2014-10-15 | 神华集团有限责任公司 | Geopolymer composition, geopolymer material and preparation method of geopolymer material |
| CN104098281A (en) * | 2013-04-03 | 2014-10-15 | 神华集团有限责任公司 | Geopolymer composition, geopolymer material and preparation method thereof |
| CN107746212A (en) * | 2017-10-18 | 2018-03-02 | 浙江大学 | Modified enhanced ground oligomer gel material of one kind and preparation method thereof |
| CN108275899A (en) * | 2018-03-09 | 2018-07-13 | 济南大学 | A kind of alkali-excited cement and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 程祖田: "《流化床燃烧技术及应用》", 30 September 2013, 中国电力出版社 * |
| 钱晓倩: "《建筑材料》", 31 December 2013, 浙江大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4040852A (en) | Lightweight aggregate | |
| RU2326842C2 (en) | Siallite double component wet cement, method of production and use | |
| US3909283A (en) | Producing lightweight aggregate | |
| US20060260512A1 (en) | Cementitious mixtures and methods of use thereof | |
| CN102167532B (en) | concrete admixture and a method for preparing the concrete admixture by calcining coal gangue | |
| US3961973A (en) | Lightweight aggregate | |
| CA1212526A (en) | Co-production of cementitious products | |
| CN102351444B (en) | Method for producing high grade cement clinker from full waste residues through rapidly calcining at low temperature | |
| EP3207002B1 (en) | Method for making fly ash | |
| CN108892401A (en) | A kind of method and clinker of ardealite calcining belite sulphoaluminate cement clinker | |
| CN101913790A (en) | Concrete expansion agent containing circulating fluidized bed combustion coal solid sulfur clinker | |
| Del Strother | Manufacture of Portland cement | |
| CN106904847A (en) | A kind of method that utilization discarded concrete Behavior of Hardened Cement Paste mutually prepares low fever's complex cement | |
| CN102649634B (en) | Grouting material containing circulating fluidized bed fuel coal solid sulfur ash | |
| CN110395925A (en) | The preparation method and application of material containing metakaolin | |
| CN110981242B (en) | Method for preparing high-strength anhydrous gypsum from calcium sulfide slag | |
| CN106630706A (en) | A method of preparing a cement raw material from a viscous-wet type calcium material | |
| KR101743601B1 (en) | solidifying agent and manufacture method for improving ground using the same | |
| JP6693542B2 (en) | Cement composition manufacturing method and cement composition manufacturing system | |
| JP2021116224A (en) | Admixture for cement, cement composition, and method for producing cement composition | |
| JP6004880B2 (en) | Method for producing Portland cement clinker | |
| RU2277515C2 (en) | Method for preparing anhydride binding agent | |
| EP3519369B1 (en) | Process enabling the use alternative fuels with high chlorine content in clinker production | |
| CN110986577A (en) | Method for cooperatively treating electrolytic manganese slag by using dry-process rotary kiln cement plant production line | |
| US11795105B2 (en) | Mixed landfill and pond coal combustion byproducts (CCBs) and related techniques |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191101 |