Page 138 - PCMI December 2017 Journal

Issue 130 December 2017 PCMI Journal Page 137
Regenera on of FeCl3 by Using Chlorine
Hans Schmitz | CEO | KSD Innova ons GmbH | DE
11/26/17
Etching rate without regeneration
• During the lifetime of the etching solution the etching rate changes to lower production speed
• The quality of the etching process depends on the life point of the etching solution
• Production interrupts by changing the etching solution and heating-up inside the etching machine
4 KSD Innovations GmbH – Environmental- and Process Engineering
Etching rate with regeneration
• Constant etching rate and increased production capacity • Constant quality of the etching solution controlled by ORP
[mV = Fe2+ / 3+]
• Reduced operating costs by constant etching rate
600 – 620 mV Constant ORP
5 KSD Innovations GmbH – Environmental- and Process Engineering
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