High Strength Calcium Aluminate Phosphate Refractory Cement High Alumina Refractory Cement Price for Unshaped Castables

High Alumina Cement

Introduction:

High Alumina Cement (also called Calcium Aluminum Cement, or High Alumina Refractory Binder), Refractory high alumina cement is made by grinding alumina and calcareous material such as lime through sintering or fusing.

High Alumina Refractory Cement differs from the production of ordinary concrete. This is because it essentially uses bauxite and lime as the raw material.

They are mixed following the set amounts which will be grounded into 100mm fragments. Then, the fragments enter a kiln to heat up to its fusion point (1600°C).

The molten product is then transferred down a steel plate to cool in a rotary kiln. Afterward, it is finely grounded into tube mills until the product is at 2250cm²/gram.

High alumina cements can be used to bind various kinds of refractory aggregates (such as corundum, burned high alumina bauxite). And it is used to produce refractory mortar or refractory concrete. Usually, the material is applied in the inner wall of cement rotary kiln and other refractory kilns and furnaces.

Properties

The refractoriness of high alumina is more than 1580℃, it can be classified into the category of aluminate cement.

High alumina refractory cement is a hydraulic cementitious material, which means, it can be hardened in water. The product appears to be yellow or brown, sometimes gray.

The cement can work under high temperature without losing its strength. The cement is slightly acidic under high temperature, It can resist corrosion from slags and erosive air.

Our company’s High alumina refractory cements product has a relatively higher early period strength as well as the later period. Which means, its gains strength quickly at the early stage and the later stage of hardening. This is because the particle of our cement is smaller than normal standard, and the smaller particle resulted in a larger specific surface area. The specific surface area of our cement is more than 300㎡/kg.

Apart from the strength, our cement has a stable bulk changing during hardening. This property helps to avoid deformation of the structure, which can cause disaster.

Physical & Chemical Index

Characteristics

1. Good resistance to chemical corrosion.

2. The pH level is low.

3. High stability under high temperature.

4. The refractive index of this cement is high.

5. It has high durability in sulphuric acid.

6. Hardening property of this cement is fast.

7. It acts as a bonding material when added in refractory castables because it forms ceramic bond      at high temperatures.

 Applications:
It's mainly used for furnace lining of boiler, blast furnace hot blast stove, heating furnace, ceramic kiln and various industrial furnaces.

Packing:

l  Plastic bag(25kg), Kraft bag (25 kg), Plastic Ton bag(1 ton);

l  1 ton on pallet with plastic film & bundle belts.

l  Per your requests