Selection of Castables for Vacuum Ladle

Vacuum ladle is mainly composed of a bag body, bag cover, inner lining, aluminum suction pipe, ejector, boom, beam, turbine, manual transmission mechanism, pouring aluminum port gland device, etc. It is a commonly used one in the aluminum industry. Equipment, because the high-temperature liquid aluminum liquid is shipped in the ladle, the main place where the refractory castable is used is its inner lining. It is necessary to build a refractory castable that can withstand high temperature and aluminum liquid, but the vacuum ladle is castable How should we choose?

First of all, due to the relatively high activity of aluminum water and strong permeability, when we choose refractory materials, we must ensure that the refractory materials have the functions of anti-permeation, corrosion resistance, impact resistance, and wear resistance. The material is mainly non-stick aluminum refractory material. The non-stick aluminum castable is made of high-alumina bauxite clinker as aggregate, high-alumina bauxite clinker, and magnesia mixed co-milled powder as powder, and water glass as binder It has good shock resistance, permeability resistance, and impact resistance, and is a refractory castable commonly used in the aluminum and electricity industry.

Non-stick aluminum castables greatly reduce the wettability of aluminum and alloys and slag to refractory materials and improve the corrosion resistance and erosion resistance of refractory materials to aluminum liquid containing chemical components such as salt and flux. The slag and slag function prevents aluminum and alloys and slag from penetrating into the refractory material, prolonging the life of the furnace lining.

In addition to the non-stick aluminum castables mentioned above, the castables used in the aluminum industry also include steel fiber castables and mullite castables, which are used in different positions and occasions according to different use environments, so we are here When choosing, you must choose according to the environment, temperature, furnace type and product performance.