Low Cement Refractory Castable

Low cement refractory castable refers to that castable with refractory cement less than 8%. Due to the specific proportion,  low cement castable has excellent performance as well as useful applications. According to the industry standard, low cement castable contains 1.0-2.5% CaO. When the content of CaO is less than 1%, it becomes ultra low cement castable. What is different from ordinary refractory castable is that part or most of the calcium aluminate cement in the matrix of low-cement and ultra-low-cement castable is replaced by ultra-fine powder with the same or similar chemical composition as the material. At the same time, an appropriate amount of water reducing agent and a certain amount of delayed coagulant are also added.

Technical Data Low Cement Refractory Castable

1. Low Cement Castable

· Content: 1.0%-2.5% of CaO;

· Property: high strength, high refractoriness, good slag resistance;

· Application: steelmaking, cement and petrochemicals, where the lining is exposed to high temperatures and corrosive slag.

2. Ultra Low Cement Castable

· Content: 0.2%-1.0% of CaO;

· Property: high strength, excellent thermal shock resistance, superior slag resistance;

· Application: in industries where severe conditions, such as rapid temperature fluctuations and aggressive slags…

3. No Cement Castable

· Content: no CaO;

· Property: superior strength, outstanding thermal shock resistance and exceptional slag resistance;

· Application: areas with very high temperatures, aggressive slags, or where the absence of cement is crucial.

4. Fireclay Low Cement Castable

· Content: Al2O3≥ 45%;

· Property: superior strength, outstanding thermal shock resistance, exceptional slag resistance;

· Application: lining of heating furnaces, soaking furnaces, various heat treatment furnaces and rotary kilns.

5. High Alumina Low Cement Castable

· Content: Al2O3≥ 75%;

· Property: superior strength, outstanding thermal shock resistance, exceptional slag resistance;

· Application: lining of heating furnaces, soaking furnaces, various heat treatment furnaces and rotary kilns.

6. Corundum Low Cement Castable

· Content: Al2O3≥ 92%;

· Property: superior strength, outstanding thermal shock resistance, exceptional slag resistance;

· Application: lining of the triangular area on the top of the steelmaking electric arc furnace and the lining of some components of the refining device.

Features

1.Good thermal shock resistance.
2.Good slag resistance.
3.Good corrosion resistance.

Application

It's mainly used for furnaces of metallurgy industry, heat treatment furnace, furnace of incineration of garbage, recirculating fluidized bed furnace, furnaces of chemical industry and construction industry, also tundish lining, etc.