EAF JETBOX™ TECHNOLOGY

Introduced in 2000, PTI's revolutionary JetBOx™ is the benchmark for oxygen injection technology. The concept has promoted the most aggressive introduction of oxygen and chemical energy into the Electric Arc Furnace (EAF) resulting in dramatic efficiency and utilization improvements. To employ this concept safely, PTI invented a unique water-cooled copper box (JetBOx™) which houses the burner and injector very low inside the EAF at a steep angle. The JetBOx™ provides excellent cooling protection and is capable of withstanding the impact of falling scrap and splashing of slag and molten metal. PTI is continuously improving the design and quality of the JetBOx™ product to enhance the already long life cycle.

The JetBOxes™ are situated just above the last course of refractory bricks with their front face in line with the hot face of bricks. This location provides the following advantages for the EAF operations:

The JetBOx™ locates the burner low in the furnace providing better energy transfer into the scrap in the scrap melting mode
The JetBOx™ positions the burner at an angle that minimizes plugging from splashing slag and molten metal during EAF operation.
The JetBOx™ eliminates overheating problems in adjacent panels by moving the burner further from the panels' hot face.
The JetBOx™ promotes higher oxygen efficiency due to the shorter jet length and the ability to use the optimal injection angle.
The JetBOx™ allows Carbon and Lime injection to be applied closer to the molten bath promoting better foamy slag and minimizing material losses.
As the JetBOxes™ are permanently fixed to the sidewall, scrap melting, decarburization and post combustion can be achieved more efficiently with significant energy savings due to closed slag door operation.

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