Low cement castables

Low cement castables
THERVEK V（Vibration casting）

Low cement castable refractory with density that surpasses that of shaped refractories

• Powdered product consisting of carefully selected refractory aggregate, ultrafine powdered materials and a small amount of alumina cement.
• Can be prepared by adding an appropriate amount of water and mixing using a mixer, and applied by casting under suitable vibration. When applying by vibration casting, prepare suitable forms.
• The prescribed degree of strength can be achieved through coagulation bonding of the ultrafine powder within 24 hours at normal temperature.

Characteristics

• By using ultrafine powdered raw materials, low cement castable refractories succeed in dramatically reducing the amount of alumina cement and mixing water required, thereby achieving drastic improvements in corrosion resistance and heat resistance in comparison with cement castable refractories.
• By reducing the amount of mixing water, low cement castable refractories achieve greater density and drastic improvements in strength and abrasion resistance in comparison with cement castable refractories.
• Although conventionally the performance of monolithic refractories has been considered inferior to that of shaped refractories, the performance of low cement castable refractories is not inferior to that of shaped refractories.

Low cement castables
THERVEK F（Free-flow casting）

Low cement castable refractory that does not require the use of a vibrator

• Powdered product consisting of carefully selected refractory aggregate, ultrafine powdered materials and a small amount of alumina cement.
• Can be prepared by adding an appropriate amount of water and mixing using a mixer, and applied by casting without vibration. When applying by free-flow casting, prepare suitable forms.
• The prescribed degree of strength can be achieved through coagulation bonding of the ultrafine powder within 24 hours at normal temperature.

Characteristics

• By optimizing the combination of ultrafine powdered raw materials and dispersants, and offers improved the fluidity and free-flow casting.
• These refractories enable the application of refractory lining walls offering excellent corrosion resistance, heat resistance, strength, abrasion resistance and performance on par with shaped refractories without using a vibrator.These refractories display their effectiveness in narrow spaces and places where the use of a vibrator is not possible.

Low cement castables
THERVEK PTG（Wet gunning）

Low cement castable refractory that increases efficiency of installation using wet gunning

• Powdered product consisting of carefully selected refractory aggregate, ultrafine powdered materials and a small amount of alumina cement.
• The development of low cement castable refractories (free-flow casting) has enabled pumping of low cement castable refractories. Wet gunning is a method of application in which mixed castable refractories are delivered under pressure via a pump system, injected into the gun nozzle together with compressed air and setting agent.
• The prescribed degree of strength can be achieved through coagulation bonding of the ultrafine powder within 24 hours at normal temperature.

Characteristics

• The enabling of wet gunning has eliminated the need to set forms, and offers improved installation efficiency in comparison with vibration casting.These refractories enable the application of refractory lining walls offering performance on par with shaped refractories using the gunning application method.

Low cement castables
THERVEK AD（Dry gunning）

Low cement castable refractory that further increases efficiency of installation using dry gunning

• Powdered product consisting of carefully selected refractory aggregate, ultrafine powdered materials and a small amount of alumina cement.
• With wet gunning method of low cement castable refractories, the task of mixing the product in a mixer was a limiting factor for application efficiency. With its development of a specialized gun nozzle, AGC Plibrico has achieved the same mixing performance as a mixer with in-nozzle mixing, and perfected wet gunning method for low cement castable refractories. Prepare a PLIMATE-Ⅱ and Need Gun, supply the powdered product using compressed air, and apply to the refractory lining walls with the addition of water at the nozzle. The PLIMATE-Ⅱ is equipped with a built-in setting agent mixing quantitative supply system.
• The prescribed degree of strength can be achieved through coagulation bonding of the ultrafine powder within 24 hours at normal temperature.

Characteristics

• Dry gunning of low cement castable refractories does not require forms or mixing, and greatly improves application efficiency in comparison with vibration casting. These refractories enable the application of refractory lining walls offering performance on par with shaped refractories easily and conveniently using the dry gunning method.