Low Cement Refractory Castable

Low cement refractory castable is a mixture composed of refractory aggregates, powders and binders. After adding water or other liquids, it is suitable for construction by pouring and vibration methods. It can also be made into prefabricated parts with specified shapes and sizes in advance for construction. Industrial furnace lining. In order to improve the physical and chemical properties and construction performance of low cement refractory castables, appropriate amounts of additives are often added, such as plasticizers, dispersants, accelerators, retarders, expansion agents, degumming-gelling agents, etc. In addition, for refractory castables used in areas subject to large mechanical forces or strong thermal shocks, if an appropriate amount of stainless steel fiber is added, the toughness of the material will be significantly increased. In insulating refractory castables, adding inorganic fibers can not only enhance the toughness, but also help to improve its thermal insulation properties. Since the basic material composition (such as aggregates and powders, admixtures, binders and admixtures), setting and hardening process, construction methods, etc. of refractory castables are similar to concrete in civil engineering, it was also called refractory castables. Concrete.

The production process of refractory castables is simple, labor-saving and energy-saving, with high construction efficiency and good quality. It can be prepared on site or materials with excellent performance can be selected as needed. Therefore, low cement refractory castable is an unshaped refractory material that is used in large quantities and has a wide range of applications in furnace construction projects.

Aggregates of monolithic refractories generally include kaolin flint, high alumina bauxite, tabular alumina, white fused alumina, dense mullite, dead burnt magnesite etc. Aggregates are main contents of monolithic, they are mixed according to certain proportions in different particle size.

Properties of monolithic refractories generally including chemical composition, bulk density, cold crushing strength after 110 ℃ drying and hot crushing strength, cold rupture strength after drying and hot rupture strength, refractoriness under load 0.2 MPa etc.

Monolithic refractories refers to unshaped refractories. It could be moulded or can be given any shape as per requirement.

Monolithics consists of graded refractory aggregates, binding agent, fillers & special additives for modification of properties.

Conventional Castable Product Data

Low Cement Castable Product Data

Classification of monolithic refractory is generally according to the operation/ installation method. There are types listed as below:

1. Trawling and pouring, sometimes with vibration-- castables

2. Ramming- Ramming mass

3. Gunning- Gunning mass/mix, castable

4. Spraying together with hammer- plastic refractory

The main application for Castable are listed below:

• Casting an alternative to fireclay and high alumina brick for application such as glass furnaces, EAF, reheating-furnace, tapping spout, aluminium and jewelry kiln

• Application for cyclone preheated of cement kiln, ceramic kiln, ash coal hoppers coal and incinerators

• Casting an alternative to high a alumina brick at EAF roof core, burner block , nose ring and kiln load