A chart is shown below depicting various technological landmarks in the development of EAF steelmaking over the period 1970 - 2000.
Amongst the historical developments shown are developments in tap-to-tap time, and improvements in electrode consumption and in electricity use per tonne of liquid steel.
The chart also shows timelines for the introduction of secondary metallurgy; the water-cooled panel; the water cooled oxygen lance; foaming slag practice; the ladle furnace; lance manipulation etc.
The pace of progress through innovation over this period can be seen to have been quite remarkable.
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