Cardox has a variety of different Tubes for specific applications.
Tubes are filled with liquid carbon dioxide (exactly the same as a fire extinguisher). When energized by the application of a small electrical charge, the chemical Heater instantly converts the liquid carbon dioxide to gas. This conversion expands the CO2 volume and builds up pressure inside the Tube until it causes the rupture Disc at the end of the Tube to burst. This releases the C02 – now 660 times the original volume – through a special discharge head to create a powerful heaving force, at pressures up to 40,000 psi (3,000 bar).
This all takes place in milliseconds.
Carbon dioxide gas is an inert gas that is commonly used in fire extinguishers, so it is safe to use without fear of generating secondary reactions with gases in the vessel/silo. In addition, the quick release of the gas refrigerates the discharge, bringing it to a temperature low enough to avoid the ignition of any air-gas mixture inside the blocked vessel.
Used by all the major cement manufacturers, Cardox is widely recognized as the most efficient, reliable, and cost-effective method of clearing build-ups and blockages in pre-heaters, cyclones, cooler areas & rotary kilns. Cardox can quickly remove build-ups and restore plant production to optimum levels.
Regardless of the Tube type used, the basic principle of operation is the same. A Tube, with removable ends, is filled with liquid Carbon Dioxide via a Pump. One end of the Tube (the Discharge End) holds a Rupture Disc; the other (the Firing End) contains the Heater. The ends are sealed by the Discharge Head and Firing Head respectively. When an electrical current is applied the Heater is energized and rapidly develops a high pressure. This pressure is sufficient to burst the Rupture Disc and the energy developed by the Heater is transmitted to the material. The Tube is reusable and the only consumable items are the Heater, Rupture Disc, and a Sealing Washer.
THE ADVANTAGES OF THE CARDOX SYSTEM IN SILO CLEANING SERVICES