CN108191270A - A kind of method that suspension roasting coal gas slugging prepares cement with little clinker - Google Patents
A kind of method that suspension roasting coal gas slugging prepares cement with little clinker Download PDFInfo
- Publication number
- CN108191270A CN108191270A CN201810193878.XA CN201810193878A CN108191270A CN 108191270 A CN108191270 A CN 108191270A CN 201810193878 A CN201810193878 A CN 201810193878A CN 108191270 A CN108191270 A CN 108191270A
- Authority
- CN
- China
- Prior art keywords
- roasting
- clinker
- cement
- coal gas
- sieve
- 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.)
- Granted
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
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
- C04B7/06—Portland cement using alkaline raw materials
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
-
- 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
Abstract
The invention discloses a kind of methods that suspension roasting coal gas slugging prepares cement with little clinker, it is by industrial soda, sieve and silica-sesquioxide and coal gas slugging mixing and levigate to the fineness sieved with 100 mesh sieve entirely in proportion, then by mixed powder in hot pressure sintering stove in 700 1000 DEG C of suspension roastings, be finally proportionally added into Portland clinker in the roasting material of cooling and gypsum be uniformly mixed and levigate to reaching the fineness of 200 mesh sieve margin≤10% up to cement with little clinker.The cheap gas treatment slugging of this method prepares cement with little clinker, has both economic and social profit.
Description
Technical field
The invention belongs to environmental protection and construction material and its application fields, and in particular to a kind of coal gasification Slag treatment and profit
Use technology.
Background technology
With the high speed development of China's industrial economy, based on the primary energy structure feature of China's " few gas rich in coal and poor in oil ",
It is grown rapidly with synthesizing, producing the Chemical Industry based on various chemical products and fuel oil.Coal Gasification Technology is even more then
Develop coal-based chemicals synthesis, liquid fuel synthesis, advanced combined cycle generation (IGCC), Poly-generation, hydrogen manufacturing, direct-reduction
The basic technology and key technology of the industry such as ironmaking.With the development of coal gasification related industry, the lime-ash discharged in gasification process
It is increasing.According to according to a preliminary estimate, China's coal gas slugging discharge capacity reaches 100,000,000 tons within 2013.Coal gas slugging is up to 1300- by temperature
1700 DEG C of thermal history, in glassy state after cooling, and wherein containing more uncombusted coal, directly stockpiling discharge does not only take up big
Amount soil leads to the risk of environmental pollution and geological disaster, and cause the waste of coal resources.Coal gas slugging at present is removed and is filled out
Bury or air storage outside, also serve as the simple applications such as roadbed and mine filling, it is other as used secondly as cement slurry
The application volume for making ceramic raw material is few, and processing capacity is limited, is not enough to dissolve the coal gas slugging largely to grow at top speed, research is large quantities of
The cheap processing of amount and increment have important meaning using the technology of coal gas slugging to the sustainable development of environmental protection and coalification industry
Justice.
Invention content
The purpose of the present invention is to provide a kind of coal gasification Slag treatment and utilization technologies, specifically provide a kind of suspension roasting coal
The method that gasification slag prepares cement with little clinker.
The technical solution adopted by the present invention：A kind of method that suspension roasting coal gas slugging prepares cement with little clinker, including such as
Lower step：
（1）Prepare two kinds of raw materials of industrial soda and sieve and silica-sesquioxide；Wherein, Na can be decomposited when industrial soda is roasting2The substance of O；
Sieve and silica-sesquioxide refers to that primary chemical composition must contain SiO2And Al2O3Solid matter, it is desirable that its 1000 DEG C roasting after residue
In quality, SiO2<85%, Al2O3>10% and SiO2+Al2O3>80%；
（2）It will be levigate to the fineness sieved with 100 mesh sieve entirely after dry industrial soda, sieve and silica-sesquioxide and coal gas slugging mixing；Wherein
Sieve and silica-sesquioxide and the mass ratio of coal gas slugging are 0.5 ~ 1.5, and the dosage of industrial soda presses its contained equivalent Na2O and sial oxygen
The mass ratio of both compound and coal gas slugging mixture is determined for 0 ~ 0.08；
（3）By step（2）The mixed powder of gained is placed in pressurization suspension roasting in the closed roaster of built-in fuel burner nozzle in right amount,
It is subsequently cooled to room temperature and obtains roasting material；In addition to built-in fuel burner nozzle, hot pressure sintering stove makes powder from external input preheated air stream
Body keeps the state to suspend in roasting；Roaster has pan feeding valve and discharge valve, and wherein discharge valve is in firing chamber
Portion's pressure automatically turns on when reaching certain value, and quickly cooling is to room temperature after powder is discharged under pressure；Input to fuel burner nozzle
Combustion-supporting air quantity is more than the air capacity made needed for combustion gas completely burned.Roast powder amount, gas flow, roasting most anticyclonic
Make that powder fully suspends in roasting, calcination temperature is maintained at 700 ~ 1000 DEG C and fully oxidized with that need to meet；
（4）Roasting material, Portland clinker and the gypsum mixing of room temperature and finely ground to 200 mesh sieve margin≤10% will be cooled to
Fineness up to cement with little clinker；Wherein quality accounting of the Portland clinker in cement is 30% ~ 70%, the dosage of gypsum
By contained equivalent CaSO4·2H2The quality of O need to meet simultaneously >=3% and≤roasting material of Portland clinker 50%.
Preferably, the industrial soda is NaOH and Na2CO3One or both mixture.
Preferably, the sieve and silica-sesquioxide is one in various natural aluminosilicate matter rocks, gangue and mine tailings
Kind or several mixtures.
Preferably, the gypsum refers to containing CaSO4、CaSO4·0.5H2O and CaSO4·2H2Any one of O or
A variety of solid matters.
The beneficial effects of the present invention are：
（1）The present invention can effectively dissolve coal gas slugging, and with reasonable cost it is converted into cement with little clinker, and prepare the latter institute
Other raw materials can also be replaced with industrial residues such as gangue, carbide slag and industrial waste gypsums, have both good economy and society
It can benefit.
（2）The present invention provides a kind of new method for preparing cement with little clinker, the portland cement with same intensity performance
It compares, clinker volume is substantially reduced, so as to reduce the carbon emission of cement, energy consumption and disposal of pollutants.In view of coal in coal gas slugging
The temperature that content is usually more than 20% and need to roast is low, and the roasting material in this supplying cement with little clinker can be made full use of in raw material
Contained coal supports roasting with further energy saving.
Specific embodiment
The present invention is further described, but the present invention is not limited thereto below by specific embodiment.
It should be noted that " coal gas slugging " herein refer to it is various in the form of water-coal-slurry or coal dust through various gasification furnaces at
Gained gasification lime-ash after reason, but above-mentioned gasification lime-ash is not limited to, it is also applied for the certain carbon containing lime-ash of other process by-products.
The sieve and silica-sesquioxide involved in embodiment has 5 kinds of natural rocks, a kind of gangue and a kind of mill tailings, they
Main chemical compositions be shown in Table 1；Industrial soda raw material NaOH and Na2CO3, it is pure both for analyzing；The silicate used
Clinker is provided by Zhong Cai Xiang Tan Co., Ltd；The gypsum used include natural dihydrate gypsum, desulfurated plaster, building gypsum,
Five kinds of anhydrite and burned plaster etc., wherein natural dihydrate gypsum and desulfurated plaster contain 90% CaSO4·2H2O, building gypsum
Containing 90% CaSO4·0.5H2O, anhydrite and burned plaster contain 90% CaSO4, fluorgypsum is containing 45% CaSO4·2H2O and
45% CaSO4。
The preparation process of the embodiment of the present invention is as follows：Dry industrial soda, sieve and silica-sesquioxide and coal gas slugging three are mixed
With the small mill grinding of cement experiment about 30 minutes after conjunction, specific milling time is subject to grind after the full mistake 100 of powder sieve.Wherein, three kinds
The charge ratio requirement sieve and silica-sesquioxide of raw material and the mass ratio of coal gas slugging are 0.5 ~ 1.5, and the dosage of industrial soda is contained etc. by it
Equivalent Na2The mass ratio of O and both sieve and silica-sesquioxide and coal gas slugging mixture are determined for 0 ~ 0.08.The mixed powder of gained is fitted
Amount is placed in pressurization suspension roasting postcooling to room temperature in the closed roaster of built-in fuel burner nozzle and obtains roasting material；Except built-in combustion gas
Outside burner, hot pressure sintering stove makes powder keep the state fully to suspend in roasting from external input preheated air stream；Roaster
With pan feeding valve and discharge valve, wherein discharge valve can be automatically turned on when roasting chamber internal pressure and reaching maximum value, powder
Quickly cooling is to room temperature after material is discharged under pressure.The combustion-supporting air quantity for inputing to fuel burner nozzle is more than to make combustion gas completely burned institute
The air capacity needed.Roasting powder amount, gas flow, the most anticyclonic matching of roasting, which need to meet, makes powder fully outstanding in roasting
Floating, calcination temperature is maintained at 700 ~ 1000 DEG C and fully oxidized.Roasting material after cooling and the portland cement subsequently added in are ripe
Material and gypsum separate compiling, the grinding time about half an hour of three, specific grinding time is to reach 200 mesh sieve margin≤10%
Subject to fineness requirement.Three kinds of material powder by grinding with batch mixer in proportion mixing up to cementitious material powder.Gained is few ripe
Expect in cement, the quality accounting of Portland clinker is 30% ~ 70%, and the dosage of gypsum presses contained equivalent CaSO4·2H2O's
The 3% of quality need >=Portland clinker and the 50% of≤roasting material.Various material specific formulas and roasting highest in embodiment
The detailed process data such as temperature refers to table 2, and the volume of gypsum has been converted into equivalent CaSO in table 24·2H2The quality of O is mixed
Amount.
The cement mortar of 20 embodiments shown in table 2 is conserved as the method for GB/T17671-1999 and intensity is examined
It surveys.Corresponding strength of cement performance data refers to table 3.Each table lists file names with GB175-2007 common portland cements standard correspondence
Index request.As shown in Table 3, institute's preparing coagulation material strength character is more than the requirement of PC32.5 cement, when clinker volume >=
When 50%, strength of cement performance is more than the requirement of PO42.5 cement, and when clinker volume reaches 70%, strength of cement performance is more than
The requirement of 52.5 cement, and corresponding clinker volume is significantly lower than the requirement of portland cement standard, illustrates that coalification slag is used and is somebody's turn to do
The performance of cement can be significantly improved after method processing in incorporation portland cement, the volume of clinker in cement is made to be less than suitable intensity
The requirement of portland cement, therefore be typical cement with little clinker.
Claims (4)
1. a kind of method that suspension roasting coal gas slugging prepares cement with little clinker, it is characterised in that include the following steps：
（1）Prepare two kinds of raw materials of industrial soda and sieve and silica-sesquioxide；Wherein, Na can be decomposited when industrial soda is roasting2The substance of O；Silicon
Aluminum oxide refers to that primary chemical composition must contain SiO2And Al2O3Solid matter, it is desirable that its 1000 DEG C roasting after remaining matter
In amount, SiO2<85%, Al2O3>10% and SiO2+Al2O3>80%；
（2）It will be levigate to the fineness sieved with 100 mesh sieve entirely after dry industrial soda, sieve and silica-sesquioxide and coal gas slugging mixing；Wherein
Sieve and silica-sesquioxide and the mass ratio of coal gas slugging are 0.5 ~ 1.5, and the dosage of industrial soda presses Na2O/ (sieve and silica-sesquioxides+coal gasification
Slag) (mass ratio)=0 ~ 0.08 determine；
（3）By step（2）The mixed powder of gained is placed in pressurization suspension roasting in the closed roaster of built-in fuel burner nozzle in right amount,
It is subsequently cooled to room temperature and obtains roasting material；In addition to built-in fuel burner nozzle, hot pressure sintering stove makes powder from external input preheated air stream
Body keeps the state to suspend in roasting；Roaster has pan feeding valve and discharge valve, and wherein discharge valve is in firing chamber
Portion's pressure automatically turns on when reaching certain value, and quickly cooling is to room temperature after powder is discharged under pressure；Input to fuel burner nozzle
Combustion-supporting air quantity is more than the air capacity made needed for combustion gas completely burned；Roast powder amount, gas flow, roasting most anticyclonic
Make that powder fully suspends in roasting, calcination temperature is maintained at 700 ~ 1000 DEG C and fully oxidized with that need to meet；
（4）Roasting material, Portland clinker and the gypsum mixing of room temperature and finely ground to 200 mesh sieve margin≤10% will be cooled to
Fineness up to cement with little clinker；Wherein quality accounting of the Portland clinker in cement is 30% ~ 70%, the dosage of gypsum
By contained equivalent CaSO4·2H2The quality of O need to meet simultaneously >=3% and≤roasting material of Portland clinker 50%.
2. the method that suspension roasting coal gas slugging according to claim 1 prepares cement with little clinker, it is characterised in that：It is described
Industrial soda be NaOH and Na2CO3One or both mixture.
3. the method that a kind of suspension roasting coal gas slugging according to claim 1 prepares cement with little clinker, it is characterised in that：
Mixture of the sieve and silica-sesquioxide for one or more of various natural aluminosilicate matter rocks, gangue and mine tailings.
4. the method that a kind of suspension roasting coal gas slugging according to claim 1 prepares cement with little clinker, it is characterised in that：
The gypsum refers to containing CaSO4、CaSO4·0.5H2O and CaSO4·2H2The solid matter of O any one or more ofs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193878.XA CN108191270B (en) | 2018-03-09 | 2018-03-09 | Method for preparing low clinker cement by using suspension roasting coal gasification slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193878.XA CN108191270B (en) | 2018-03-09 | 2018-03-09 | Method for preparing low clinker cement by using suspension roasting coal gasification slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108191270A true CN108191270A (en) | 2018-06-22 |
| CN108191270B CN108191270B (en) | 2020-06-23 |
Family
ID=62595419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810193878.XA Active CN108191270B (en) | 2018-03-09 | 2018-03-09 | Method for preparing low clinker cement by using suspension roasting coal gasification slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108191270B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194393A (en) * | 2020-09-10 | 2021-01-08 | 内蒙古亿利冀东水泥有限责任公司 | Preparation method of portland cement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174974A (en) * | 1978-04-14 | 1979-11-20 | Standard Oil Company (Indiana) | Process for converting coal ash slag into portland cement |
| CN102875041A (en) * | 2012-10-25 | 2013-01-16 | 湖南科技大学 | Method for preparing room-temperature curing one-component alkali-activated cement with calcination at low temperature |
| CN103693868A (en) * | 2013-11-30 | 2014-04-02 | 湖南科技大学 | Preparation method of novel compound cement |
| JP2014058431A (en) * | 2012-09-19 | 2014-04-03 | Taiheiyo Cement Corp | Method for preparing cement composition |
| CN105502974A (en) * | 2015-12-19 | 2016-04-20 | 彭美勋 | Method for treating and utilizing nickel mineral metallurgy waste residues |
| CN105565693A (en) * | 2015-12-19 | 2016-05-11 | 湖南科技大学 | Preparation method of composite gypsum cementing material |
| CN106336134A (en) * | 2016-08-26 | 2017-01-18 | 南华大学 | Preparation method of low-clinker cement |
-
2018
- 2018-03-09 CN CN201810193878.XA patent/CN108191270B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174974A (en) * | 1978-04-14 | 1979-11-20 | Standard Oil Company (Indiana) | Process for converting coal ash slag into portland cement |
| JP2014058431A (en) * | 2012-09-19 | 2014-04-03 | Taiheiyo Cement Corp | Method for preparing cement composition |
| CN102875041A (en) * | 2012-10-25 | 2013-01-16 | 湖南科技大学 | Method for preparing room-temperature curing one-component alkali-activated cement with calcination at low temperature |
| CN103693868A (en) * | 2013-11-30 | 2014-04-02 | 湖南科技大学 | Preparation method of novel compound cement |
| CN105502974A (en) * | 2015-12-19 | 2016-04-20 | 彭美勋 | Method for treating and utilizing nickel mineral metallurgy waste residues |
| CN105565693A (en) * | 2015-12-19 | 2016-05-11 | 湖南科技大学 | Preparation method of composite gypsum cementing material |
| CN106336134A (en) * | 2016-08-26 | 2017-01-18 | 南华大学 | Preparation method of low-clinker cement |
Non-Patent Citations (1)
| Title |
|---|
| 徐会超等: "《煤化工气化炉渣综合利用的现状与发展趋势》", 《化工管理》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194393A (en) * | 2020-09-10 | 2021-01-08 | 内蒙古亿利冀东水泥有限责任公司 | Preparation method of portland cement |
| CN112194393B (en) * | 2020-09-10 | 2022-04-12 | 内蒙古亿利冀东水泥有限责任公司 | Preparation method of portland cement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108191270B (en) | 2020-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108358478B (en) | Method for preparing cementing material by calcining coal gasification slag step by step | |
| CN110304847A (en) | A kind of wet-milling carbide slag exciting agent and its preparation method and application | |
| CN103864320B (en) | Low heat portland blast-furnace-slag cement and production method thereof | |
| CN105502974B (en) | A kind of processing of nickel minerals metallurgical slag and Application way | |
| CN104609434A (en) | Preparation method and application method of calcium sulphosilicate mineral | |
| CN103964713A (en) | Method for preparing belite-sulphate aluminium cement by using coal ashes and bayer-process red mud | |
| CN108178536A (en) | A kind of method that step calcination coal gas slugging prepares cement with little clinker | |
| CN102219422A (en) | Expanding clinker, expanding agent, concrete and preparation method of expanding clinker | |
| CN108675657A (en) | A method of preparing silicate-aluminium sulfate compound system clinker using waste residue | |
| CN107056100A (en) | A kind of preparation method of clinker | |
| CN105502973A (en) | Calcium-poor and silicon-rich ecological cement and application thereof | |
| CN1315749C (en) | High strength silicate clinker and its preparing method | |
| CN105000814A (en) | Processing method for preparing fast-hardening early-strength oil well cement with industrial waste slag | |
| CN104961363B (en) | A kind of method of the active ground-slag of use shaft kiln factory and office reason discarded concrete system and aggregate | |
| CN109553355A (en) | A kind of C40P12 subway concrete and preparation method thereof | |
| CN105801062A (en) | Method for preparing self-leveling floor material from phosphorus solid waste | |
| CN108275895A (en) | A kind of method that the slugging of suspension roasting coal gas prepares cementitious material | |
| CN104310812A (en) | Green ecological cement and production method thereof | |
| CN108191270A (en) | A kind of method that suspension roasting coal gas slugging prepares cement with little clinker | |
| Seco et al. | Assessment of the ability of MGO based binary binders for the substitution of Portland cement for mortars manufacturing | |
| JP5493401B2 (en) | Method for reducing heat of hydration of cement composition | |
| CN109437769A (en) | A kind of C30P10 subway concrete and preparation method thereof | |
| CN100999392A (en) | Preparation method of silicate cement clinker | |
| CN105130222B (en) | Method of preparing special sulfate cementing material through treatment on electrolytic manganese residue in fluidized bed boiler | |
| CN110467363A (en) | It is a kind of using premixing factory waste residue as the green ecological cement of raw material and its production method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |