High Alumina Cement Supplier

High alumina cement and Portland cement are hydraulic cement, the main mineral composition of the former is calcium aluminate, the main mineral composition of the latter is calcium silicate, because of the different mineral composition, the characteristics of cement is not the same.

The main mineral of high alumina cement is mono-calcium aluminate (CA), and the secondary mineral is mono-calcium dialuminate (CA2). The reaction with water can be expressed in the following formula: the hydration products of high-alumina cement at room temperature, CAH10 and C2AH8, are both metastable products. When the temperature exceeds 35℃, they will transform into stable C3AH6, during this crystalline transformation, the strength decreases.

Due to the high alumina cement hydration products don't appear free Ca (OH2, also don't like C2S minerals exist in the Portland cement, when as the combination of the refractory concrete agent accordingly, will not happen such as Portland cement in the process of repeated heating and cooling for CaO and Ca (OH2 repeatedly to form, and beta of polymorphic transformation of C2S, the refractory concrete volume is not stable. And high alumina cement has early strength, in the kiln construction, can shorten the curing period as far as possible, that is, the so-called "one day concrete", so high alumina cement is widely used in the refractory industry.

One of the notable characteristics of high alumina cement is that it can accelerate the setting time of Portland cement, accelerate the strength and relieve the heat of hydration. By carefully choosing the dosage of high alumina cement, the mixture with Portland cement can obtain satisfactory hydration performance, which not only obtains high early strength, but also retains good long-term strength.

High Alumina Cement Main Application

1. Preparation of amorphous refractory.

2. Preparation of gypsum bauxite expansion cement, self - stress cement and other special purpose cement.

3. Projects with special needs such as rush construction, rush repair, resistance to sulfate erosion and winter construction.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory material manufacturer, refractory products of high quality, reasonable price, is worthy of customer trust quality products. Welcome to consult purchasing.

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