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Iron Making

Blast furnaces contribute approximately 70% of global iron production. Typically a countercurrent exchange process occurs in the furnace with down-flowing ore, coke and flux in contact with an up-flowing hot blast. The blast furnace gas exiting from the top of the furnace, after cleaning, can be used as a fuel that usually enriched with coke oven gas or natural gas.
Direct reduction Iron (DRI) offers an alternative route for iron making. Iron ore is reduced in solid state at 800-1050 °C either by reducing gas or coal.
The exhaust gas exiting from the top is likewise cleaned through an electrostatic precipitator (ESP) or gas scrubber.
Operators require a number of critical measurements for process control.

  • Blast furnace gas -  O2, CO, CO2 and H2

  • Hot blast stove flue gas  - CO, O2

Extremely harsh conditions require careful consideration of the analytical solution to ensure maximum availability.

The non-contact laser and sensor of the LGA combined with continuous purge result in virtually maintenance free installations. The high-speed response (down to 1s) of the in-situ analyser highlights its reliability for safety control. Locating gas monitors downstream of the bag filter not only measures constituents of the blast furnace gas, but also detects possible leaks from the bag filter.
 

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Quantitech Ltd
Unit 3, Old Wolverton Road
Milton Keynes
England
MK12 5NP

Quantitech is a subsidiary of Gasmet Technologies Oy

Tel: +44 (0)1908 227722
Fax: +44 (0)1908 227733
Email: info@quantitech.co.uk

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