CN105800976B - A kind of control method for improving high iron sulpho-aluminate clinker strength - Google Patents
A kind of control method for improving high iron sulpho-aluminate clinker strength Download PDFInfo
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- CN105800976B CN105800976B CN201410845444.5A CN201410845444A CN105800976B CN 105800976 B CN105800976 B CN 105800976B CN 201410845444 A CN201410845444 A CN 201410845444A CN 105800976 B CN105800976 B CN 105800976B
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Abstract
The invention discloses a kind of control method for improving high iron sulpho-aluminate clinker strength, during high iron sulpho-aluminate clinker is produced, mineral composition to high iron sulpho-aluminate clinker carries out material phase analysis, quantitative analysis is carried out to the percentage by weight of each mineral, determines whether the percentage by weight of the free gypsum in high iron sulpho-aluminate clinker is more than zero and no more than 4%；If the percentage by weight of the free gypsum in high iron sulpho-aluminate clinker is zero or more than 4%, then adjust the volume of gypsum, anhydrite or desulfurated plaster in high iron sulpho-aluminate raw meal powder, it is ensured that the percentage by weight of the free gypsum in the high iron sulpho-aluminate clinker produced is more than zero and no more than 4%.The present invention is no longer had the blind area of control by high iron sulpho-aluminate clinker to be influenceed, so as to improve the intensity of high iron sulpho-aluminate clinker.
Description
Technical field
The present invention relates to a kind of sulfoaluminate clinker, more particularly to a kind of controlling party for improving high iron sulpho-aluminate clinker
Method.
Background technology
Sulfoaluminate clinker be produce sulphate aluminium cement important component, existing sulfoaluminate clinker particularly iron content
There is a blind area in the production control for measuring high sulfoaluminate clinker, control sulfoaluminate clinker that can not be effective and reasonable during production
Each chemical composition ratio, cause the intensity decreases of the high sulfoaluminate clinker of sulfoaluminate clinker particularly iron-holder.And
The reason for blind area be present and be in the production control of sulfoaluminate clinker：
Enter factory's raw materials and fuel it is controlled on the premise of, basicity factor Cm, aluminium-sulfur ratio P, the aluminium silicon of dispensing major control clinker
Than and free SO3.In general production control, basicity factor general control is 1 or is slightly less than 1, and aluminium-sulfur ratio control is less than
3.82, and the calculating of calculation formula basicity factor assumes that the Fe in clinker2O3And TiO2C is formed respectively4AF（Tetra calcium aluminoferrite）
And CT（Perovskite）；Al2O3Except forming C4AF（Tetra calcium aluminoferrite）All generate C outside4A3$（Anhydrous calcium sulphoaluminate）, SiO2All formed
C2S（Dicalcium silicate）；And we have found the different raw material institute of different kiln types and various regions by XRD analysis in actual production
The actual mineral composition difference of sulfoaluminate clinker of production is very big, such as C in sulfoaluminate clinker4A3In $ crystal different kiln types with
And different raw materials and fuels and technology controlling and process value vary, and cause chemical composition CaO, Al2O3And SO3Ratio theoretical value and reality
Actual value difference is very big, the Al in sulfoaluminate clinker3+By Fe3+、Si4+、Ti4+Plasma substitutes, and especially prominent is high red bauxite
In production process, there is substantial amounts of Al3+By Fe3+Substitution, and how much substitute can not detect for conventional chemical analysis method.So
It may result in the SO in sulfoaluminate clinker3Control encounters difficulties, and reason is：Al3+The quantity of replacement is more, can cause sulphur aluminium
There are more Al in hydrochlorate clinker2O3Need SO3React further generation C4A3$, now improve in sulfoaluminate clinker
SO3Be advantageous to improve the ratios of the early strong mineral of anhydrous calcium sulphoaluminate so as to improve the intensity of clinker；Al3+What the quantity of replacement substituted
It is few, and SO in sulfoaluminate clinker3It is another it is fixed in the case of, the free plaster ratio in sulfoaluminate clinker will increase, mistake
More free gypsum will cause the water requirement of clinker to increase, so as to cause sulfoaluminate clinker intensity decreases.
The content of the invention
In order to overcome high iron sulpho-aluminate clinker to be reduced due to high iron sulpho-aluminate clinker strength caused by the blind area of control
The defects of, the invention provides one kind to improve high iron sulpho-aluminate clinker strength control method, and the control method is no longer by high ferro
There is the influence of the blind area of control in sulfoaluminate clinker, so as to improve the intensity of high iron sulpho-aluminate clinker.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of control method for improving high iron sulpho-aluminate clinker strength, it is characterised in that：In production high iron sulpho-aluminate
During clinker, the mineral composition to high iron sulpho-aluminate clinker carries out material phase analysis, and the percentage by weight of each mineral is entered
Row quantitative analysis, determines whether the percentage by weight of the free gypsum in high iron sulpho-aluminate clinker is more than zero and no more than 4%；
If the percentage by weight of the free gypsum in high iron sulpho-aluminate clinker is zero or more than 4%, adjustment gypsum, anhydrite
Or volume of the desulfurated plaster in high iron sulpho-aluminate raw meal powder, it is ensured that the trip in the high iron sulpho-aluminate clinker produced
Percentage by weight from gypsum is more than zero and no more than 4%.
When mineral composition to high iron sulpho-aluminate clinker carries out material phase analysis, material phase analysis is carried out using XRD diffractometers.
When carrying out quantitative analysis to the percentage by weights of each mineral, using TOPAS softwares carry out quantitative analysis or
JADE software semi-quantitative analyses.
TOPAS softwares are full software for analyzing spectrum（TOtal Pattern Analysis Solutions）It is German Bruker
The business software for being used to carry out advanced analysis to X-ray diffraction (XRD) spectral line and to Sample crystals structure of company's issue.
JADE softwares are crystal and noncrystal X-ray diffractogram software for analyzing spectrum, to XRD spectrum difference 2theta
The separation and fitting at peak, and compared with existing material pdf cards, what crystal formation what material the material is can be analyzed, is crystallized
Degree, content ratio of many kinds of substance etc..
The present invention has advantages below：
The present invention carries out material phase analysis by the mineral composition to high iron sulpho-aluminate clinker, to the weight hundred of each mineral
Divide than carrying out quantitative analysis, analyze the percentage by weight for the gypsum that dissociates in high iron sulpho-aluminate clinker, pass through the weight of free gypsum
Percentage is measured to react SO in high iron sulpho-aluminate clinker3Content, as long as in clinker dissociate gypsum percentage by weight be more than
Zero and during no more than 4%, SO in high iron sulpho-aluminate clinker3Content be exactly suitable, the intensity of clinker will improve, production
The intensity of sulphate aluminium cement out is improved.The present invention no longer uses traditional theoretical calculation method, but with reality
Clinker mineral composition based on be adjusted, adjust precise control, it is and easily controllable, be not in the blind area of control, ensure
To the high iron sulpho-aluminate clinker of high intensity.
Embodiment
The principle of the present invention and the effect that reaches are illustrated with specific embodiment below：
Certain factory's high iron sulpho-aluminate clinker chemical composition is as follows:
Wherein：Loss refers to high iron sulpho-aluminate raw material in loss on ignition caused by calcining.
Mineral composition is calculated according to conventional calculation formula（Percentage by weight）：
Wherein：C4A3$ is anhydrous calcium sulphoaluminate, and its chemical formula is 3CaO 3Al2O3•CaSO4；
C2S is that dicalcium silicate its chemical formula is 2CaO SiO2；
C4AF is that tetra calcium aluminoferrite chemical formula is 4CaO Al2O3•Fe2O3；
CT is that perovskite chemical formula is CaO TiO2；
f-SO3For the sulfur trioxide that dissociates；
f-CaSO4For the gypsum that dissociates；
And use method provided by the invention to carry out XRD diffractometers to high iron sulpho-aluminate clinker and carry out material phase analysis discovery
Almost there is no the peak of free gypsum, it is possible to determine that SO in clinker in clinker3Controlled quentity controlled variable deficiency, and now high iron sulpho-aluminate clinker
Physical property assay such as following table：
We adjust the percentage by weight of gypsum, anhydrite or desulfurated plaster in high iron sulpho-aluminate raw meal powder, pass through
XRD diffractometers carry out material phase analysis and carry out quantitative analysis or JADE software semi-quantitative analyses using TOPAS softwares, analyze
The percentage by weight of free gypsum in high iron sulpho-aluminate clinker, until the percentage by weight for the gypsum that dissociates is more than zero and is not more than
After 4%.
Material phase analysis is carried out using XRD diffractometers after adjustment and quantitative analysis, probe into Processing high Iron and Sulfur aluminic acid are carried out using TOPAS softwares
Mineral composition in salt clinker（Percentage by weight）Such as following table：
Wherein：C2Fe2-XAlXO5For calcium aluminoferrite；
Anhydrite is that anhydrite can be characterized as free gypsum herein；
High iron sulpho-aluminate clinker physical property assay such as following table：
All it was improved after 1 day, 3 days and 7 days as can be seen that being adjusted rear rupture strength and compression strength.
Claims (3)
- A kind of 1. control method for improving high iron sulpho-aluminate clinker strength, it is characterised in that：It is ripe in production high iron sulpho-aluminate During material, the mineral composition to high iron sulpho-aluminate clinker carries out material phase analysis, and the percentage by weight of each mineral is carried out Quantitative analysis, determines whether the percentage by weight of the free gypsum in high iron sulpho-aluminate clinker is more than zero and no more than 4%；Such as The percentage by weight of free gypsum in fruit high iron sulpho-aluminate clinker is zero or more than 4%, then adjust gypsum, anhydrite or Volume of person's desulfurated plaster in high iron sulpho-aluminate raw meal powder, it is ensured that free in the high iron sulpho-aluminate clinker produced The percentage by weight of gypsum is more than zero and no more than 4%.
- A kind of 2. control method for improving high iron sulpho-aluminate clinker strength according to claim 1, it is characterised in that：It is right When the mineral composition of high iron sulpho-aluminate clinker carries out material phase analysis, material phase analysis is carried out using XRD diffractometers.
- 3. a kind of control method for improving high iron sulpho-aluminate clinker strength according to claim 1 or 2, its feature exist In：When carrying out quantitative analysis to the percentage by weights of each mineral, quantitative analysis or JADE softwares are carried out using TOPAS softwares Semi-quantitative analysis.
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| CN1049880C (en) * | 1995-05-22 | 2000-03-01 | 中国建筑材料科学研究院 | Ultrahigh calcium aluminoferrite portland cement clinker and its prepn |
| JP2008285370A (en) * | 2007-05-18 | 2008-11-27 | Tokyo Institute Of Technology | Method for producing cement composition |
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