Specialized castables

Acid resistant castables
THERVEK AR Series

AR Series are powdered products consisting of carefully selected refractory aggregate and binders, combined according to the application of use.
These refractories can be applied by casting, trowelling or dry gunning.
The prescribed degree of strength can be achieved within 48 hours at normal temperature.

Alumina cement (which is typically used as the binder for monolithic refractories) exhibits poor resistance to acids, and cannot be used in applications where refractories will be exposed to strong acids.
AR900 is a chemically (water glass) bonded castable refractory with superior acid resistant characteristics.
AR800 utilizes a special alumina cement as its binder, enabling it to display superior performance in terms of resistance to both acids and alkalis.
AR500 utilizes a special cement as its binder, offering superior resistance to acids.

Powdered product consisting of carefully selected refractory aggregate, light weight aggregate, and a special binder.
This series offers a lineup of products that can be applied by vibration casting, free-flow casting or dry gunning.
The prescribed degree of strength can be achieved within 24 hours at normal temperature.

Refractories used in FCC reactors (fluid catalytic cracking reactors, a type of apparatus used at oil refineries) are subjected to intense abrasive wear caused by the circulation of the catalyst inside the reactor. While this requires them to be resistant to abrasion, they must also have insulating properties in order to protect the reactor shell. The ABR of abrasion resistant castable refractories achieves the conflicting properties of both abrasion resistance and insulating performance.

Powdered product consisting of carefully selected refractory aggregate and a special phosphate binder.
The refractory is prepared by adding an appropriate amount of water and mixing in a mixer, and applied by ramming using a pneumatic rammer. If the amount of mixing water is increased, CYMIX can also be applied by hand packing.
The prescribed degree of strength can be achieved within 24 hours at normal temperature. On additional heating, a phosphate condensation reaction occurs, producing an extremely strong refractory installation.

Refractories used in the cyclone sections of FCC reactors (fluid catalytic cracking reactors, a type of apparatus used at oil refineries) are subjected to particularly intense abrasive wear by the catalyst. This requires them to be highly resistant to abrasion. CYMIX is an abrasion resistant plastic refractory that is ideal for use in such locations.

PX-BD is a paste-type product consisting of refractory aggregate and water glass binder. It can be delivered in plastic tube, caulking tube or pail can form.
PX-BD is a high-strength joint packing and bond.
・PX-BD can be used to fill joints by inserting a tube into the open space between brick joints and filling them directly with the product.
・When performing patching repairs, a thin underlay coating of PX-BD can be applied to the surface of the base material using a trowel or similar tool. Doing so increases the adhesive strength of the bond between the base material and the patching material, increasing the effectiveness of the repair.
When PX-BD is heated to temperatures in excess of 500℃, chemical bonding occurs, increasing the strength of the refractory (i.e. heat setting).

PX-CO is a powdered product consisting of refractory aggregate and a special binder.
The refractory is prepared by adding an appropriate amount of water (or other dedicated fluid) and mixing in a mixer. A coating is then applied to the surface of refractory lining walls or metal surfaces using a trowel or pasting brush.

PX-CO1700 (2P) is a highly corrosion resistant, high-strength coating material that can extend the service life of incinerators when used as a coating for incinerator walls.
PX-CO1100 is an elastic, impact-resistant and abrasion resistant coating material, which improves abrasion resistant characteristics when applied to parts of FCC reactors that are subjected to abrasive wear by catalysts.
PX-CO900 is an acid resistant coating material for application to metal surfaces.

PX-IJ is a powdered product consisting of carefully selected refractory aggregate and water glass.
The refractory is prepared by adding an appropriate amount of water and applied by injection. It can also be applied by hot injection.
When PX-IJ is heated at working temperature, chemical bonding occurs, resulting in hardening (i.e. heat setting).

PX-DM is a joint mortar for alumina and alumina-silica bonding bricks. It is a powdered product consisting of carefully selected refractory aggregate and water glass.
The refractory is prepared by adding an appropriate amount of water and applied by trowelling.
When PX-DM is heated, chemical bonding occurs, resulting in hardening (i.e. heat setting).