An 'eye' that measures liquid steel temperatures

Aug 22, 2011

Contact-free measurement of the temperature of molten steel boosts the productivity of arc furnaces. That’s why Siemens has developed a system called Simetal RCB Temp, which consists of an optical sensor that can determine the temperature of the molten metal in the steel production process (over 1,500 degrees Celsius) at shorter intervals than was previously the case. As a result, the best time to tap can be determined more exactly, thus saving time and energy and increasing work safety.

To produce in electric arc furnaces, scrap metal is melted down in a process that requires the temperature of the molten metal to be exactly and reliably measured. RCB Temp makes optimum melting sequence times possible, resulting in lower energy consumption and operating costs. Previously, the temperature had to be measured with measurement cartridges through the open slag door, because optical measurement systems are too sensitive to heat and soiling to be installed inside the furnaces. Manual measurements are strenuous, hazardous, and limit the number of measurements that can be taken until the steel is tapped. Siemens Industry has now successfully integrated the RCB (Refining Combined Burner) system into a robust optical temperature sensor.

The RCB system consists of a burner for melting the scrap metal and a lance for injecting a precisely concentrated stream of oxygen into the liquid steel. In order to measure the temperature, an inert gas is injected into the steel instead of oxygen. The gas stream enables the system to “look” into the molten metal like an eye, allowing the optical sensor at the rear of the lance to detect the liquid steel’s infrared radiation. The resulting data is used to calculate the of the with the help of a special algorithm. The system doesn’t require measurement cartridges and can measure temperatures through a closed slag door and when heating power is on. And because the sensor is positioned at the rear of the lance, it is protected against damage when scrap iron is fed into the furnace.

Arc furnaces can easily be retrofitted with Simetal RCB Temp when they are shut down for maintenance. The system can increase by up to two percent so that the investment is recouped in less than six months.

Explore further: Identifying long-distance threats: New 3D technology could improve CCTV images

add to favorites email to friend print save as pdf

Related Stories

Making Steel Recycling Greener

Jan 26, 2010

A new process developed by Siemens cuts the energy required to recycle steel and also lowers carbon dioxide (CO2) emissions.

Byproduct of steel shows potential in CO2 sequestration

Oct 13, 2008

With steelworks around the world emitting huge amounts of carbon dioxide, scientists are reporting that a byproduct of steel production could be used to absorb that greenhouse gas to help control global warming. The study ...

New coating protects steel and superalloys

Mar 23, 2006

Researchers at Pacific Northwest National Laboratory have developed a new ceramic-based coating for steel and superalloys that prevents corrosion, oxidation, carburization and sulfidation that commonly occur ...

Recommended for you

3D printed nose wins design award

8 hours ago

A Victoria University of Wellington design student is the New Zealand finalist for the James Dyson Award 2014 for his Master's project—a 3D printed prosthetic nose.

Engineering the Kelpies

9 hours ago

Recently, Falkirk in Scotland saw the opening of the Kelpies, two thirty metre high horse head sculptures either side of a lock in a new canal extension.

Technology on the catwalk

9 hours ago

Summer days bring thoughts of beach picnics, outdoor barbecues and pool parties. Yet it only takes the buzz of one tiny mosquito to dampen the fun.

Dismantling ships and the trajectory of steel

10 hours ago

Tell me how you dismantle a ship, and I'll tell how a region can prosper from its steel! This could be the motto of this master's cycle at ENAC during which the projects of two civil engineering students ...

User comments : 0