【Product name】Cement accelerator aluminum sulfater
【Molecular formula】AL2(SO4)3
【HS code】2833220000
【CAS code】10043-01-3
【Implementation standard】HG/T 2225-2018
【Product form】Powdered, Granulate
【Packaging】Laminated woven bag or lined plastic bag. 50kg/bag; 25kg/bag; 500kg/bag;1000kg/bag or customized according to customer requirements.
Product Introduction
Cement accelerator aluminum sulfater is a white crystal with a specific gravity of 1.69. It is easy to absorb moisture and form lumps when stored in the air for a long time. The dehydration temperature is 86.5℃. It is soluble in water, acid and alkali. The aqueous solution is acidic and has a sour and astringent taste. starts to decompose when heated to 530℃ and ends at 860℃. The final decomposition product is AL2O3. During the hydrolysis process of Cement accelerator aluminum sulfater, the intermediate product basic salt is first generated, and then aluminum hydroxide is generated.
Application
Accelerator is an important chemical additive in the fields of architecture and road construction, which can significantly shorten the setting time of concrete and improve the efficiency of the project. As an important raw material in the production of accelerator, aluminum sulfate's action mechanism and performance have a vital impact on the overall performance of accelerator,The aluminum ions contained in it have little influence on the later strength of cement, and are suitable for various cement types.
Product Parameters
|
Index requirements of aluminum sulfate used as cement accelerator |
|
|
Indicators |
Standard value |
|
Alumina (AL2O3) content, % |
≥16.0 |
|
Iron (Fe) content, % |
≤0.005 |
|
(Water-insoluble matter) content, % |
≤ 0.1 |
|
PH (1% aqueous solution) content, % |
≥ 3.0 |
|
Sieve analysis |
10-20 mesh |
Application of aluminum sulfate in cement
The application of aluminum sulfate in cement production is very important, and its versatility significantly improves the performance of cement. First of all, as the core component of cement reinforcing agent, the addition ratio of aluminum sulfate usually reaches 40-70%. By reacting with aluminum hydroxide, calcium aluminum sulfate hydrate can be generated, which can accelerate the early hardening and strength development of cement. Secondly, aluminum sulfate can flexibly adjust the setting time of cement, which can ensure the normal hardening of cement in cold or hot seasons and enhance its adaptability to different climatic environments. In addition, the reaction product of aluminum sulfate and calcium silicate can fill cement micropores and improve wear resistance and durability. At the same time, it can also promote the early hydration reaction of cement, generate sulphoaluminate, and further enhance the early strength of cement. In addition, aluminum sulfate is an important raw material for making accelerator, and its aluminum ions have little influence on the later strength of cement, and it is suitable for many cement types. To sum up, the wide application of aluminum sulfate in cement production has significantly improved the quality and performance of cement and met the diversified needs of construction projects.
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