Mass Flow Controller for the Steel Industry
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flox[on] Mass Flow Controller for the Steel Industry

THE company FC Technik is a company with headquarters in Winterthur, Switzerland and activities all around the world. We offer our customers the advantages which accrue from many years of experience in gas measuring and control technology. For over five years, we have specialized in serving the metallurgic industry. FC Technik develops and produces the flox[on] mass flow controller. Our company’s collective passion is the control of flowing gases. In the tradition of legendary Swiss perfectionism we guarantee the precision and robustness, as well as the long and dependable operating...

flox[on] shows its strength The mass flow controllers of the flox[on] series demonstrate their unrivalled strength under the harsh conditions of the steel industry. The mass flow controllers of the flox[on] series demonstrate their unrivalled strength under the harsh conditions of the steel industry.The mass flow controllers of the flox[on] series demonstrate their unrivalled strength under the harsh conditions of the steel industry. In all phases of modern steel production, gases are used for shielding, stirring or homogenizing. The flox[on] mass flow Successfully tested in actual practice...

Application in the steel industry Iron/Steel Nitrogen/ Argon injection Secondary metallurgy Ladle processing Selective control and regulation of inert gases Shroud argon-shielding Prevents nitrogen aspiration from surrounding air Prevents nitrogen aspiration from surrounding air

Furnaces Steel production Converter bottom-purging Injection of inert gases through annular tuyeres For controlled circulation of the molten steel Tundish gas control systems Purging plug test station Gas treatment of stoppers, submerged nozzles and shrouds in strand casting For testing and cleaning the purging plug

PRODUCTS OF THE FLOX[ON] SERIES Data Maximum flow Maximum operating pressure air, nitrogen, argon, other non-corrosive gases air, nitrogen, argon, other non-corrosive gases Argon shielding for continuous casting Ladle shrouds for Stopper inert gas injection General gas injection for small flows Bottom-purging for converters Bottom-purging for ladle furnace and EAF Regualtion ratio Media Calibration gas Accuracy (discrepancy between actual and nominal values) Step response (10% - 90%) Metered bypass Connection voltage Output max. Connection Signal reference/actual value Bypass signal Housing...

air, nitrogen, argon, other non-corrosive gases air, nitrogen, argon, other non-corrosive gases aluminium (flange: stainless steel) Specially developed for ladle furnace vacuum degassing Gas injection by injection lances

Converter bottom purging Application ranges for flox[on] S and flox[on] J The injection of inert gases (Ar, N2) through the converter bottom by annular tuyeres, SHP's and MHP's serves to optimize the costs of the process. The FC Technik system guarantees optimal control over the entire treatment process, including charging, stand-by phase, primary and secondary purging phases and tapping, with very precise quantities at lower flow rates. The flox[on] S and flox[on] J mass flow controllers are ideally suited for gas regulation in converter bottom purging. The reliability and quick reaction...

Charging the converter at Bremen’s Arcelor Mittal plant Gas control station for converter purging by FC Technik

Application range for flox[on] S Bottom purging in electric arc furnaces is used for controlled circulation of the molten steel for better homogeneousness during and after charging with scrap. FC Technik developed this system specially for a fully automatic „stirring“ of the melt. The robust design unites the gas regulator and the control station into one block, making it completely suitable for the operating processes in an electrical steel plant. Bottom purging in electric arc furnaces is used for controlled circulation of the molten steel for better homogeneousness during and after...

Electric arc furnace in the Georgsmarienhütte (by permission from stahl-online) Control of electric arc furnace with flox[on] mass flow controller

Ladle processing with vaccuum and secondary refining Application ranges for flox[on] S and flox[on] S500 The compact gas control station was developed by FC Technik specially for ladle processing treatment of steel during the secondary refining process. The large purging range depends on the dimensions of the ladle and other individual requirements. The system facilitates the very intricate job of injecting gases during various processes, e.g. heating, alloying, and vacuum treatment. The flox[on] S500 features a remarkable regulation ratio of 1:500, making it possible to control flow rates...

Ladle at Bremen’s Arcelor Mittal plant Switching cabinet for ladle treatment, schematic diagram

RH Lift Gas Control Unit Application ranges for flox[on] S and flox[on] J Selective control and regulation of the lift gas in each individual tuyere of the up snorkel guarantees an optimized process and a positive effect on the durability of the refractory materials. The gas control station by FC Technik offers the required degree of exactness. The flox[on] S is ideally suited for controlling each individual tuyere of the up snorkel separately and thereby selectively delivering the appropriate predetermined amounts of carrier gas. This guarantees a highly reliable process for circulation of...

Interior view of RH unit, Arcelor Mittal, Duisburg Ruhrort Gas control station with 10 lines for the up snorkel

Shroud Anti Aspiration Control (SAAC) Application range for flox[on] B This system prevents nitrogen penetration from the surrounding air into the molten steel through the contact area between collector nozzle and ladle shroud during pouring into the tundish. The fully automatic controller developed by FC Technik determines the required amount of argon gas by means of flow or pressure at the lowest possible rate of argon consumption. This system is indispensible for improving steel quality in strand casting facilitites. Shroud Shroud Anti Aspiration Control (SAAC) The SAAC system serves...