EBN Member, Paul Wurth InCub , based in Luxembourg, is looking for startup working on effluent or, more specifically, salty water treatment.
In the frame of our environment protecting technologies/activities, Paul Wurth has developed a new process dedicated to the recycling of ironmaking zinc bearing residues, especially sludge resulting from the gas cleaning of blast furnaces. The issue with such material is the content of Zn and Pb which are detrimental for the blast furnace process operation and thus direct recycling is not possible. That is why at Paul Wurth they have developed a new hydrometallurgical process, called CIROVAL TM, using HCl to selectively remove Zn and Pb. This process works in 2 steps:
- The first step is a leaching process to remove the Zinc and the Lead in order to be able to recycle the valuable fraction, mainly composed of Fe and C.
- The filtrate coming from the previous step is neutralized to precipitate the heavy metals. A water, highly concentrated in salt is produced and composed mainly of calcium chloride (~5%[w]) and some remaining heavy metal at very low concentration.
This salty water is an issue for our customers who are not located close to the sea and/or not allowed to discharge into any river. Indeed due to the high chloride content (~20-35 g/l) this water cannot be recycled internally.
Detailed composition of this salty water will be provided on request.
What Paul Wurth Incub is offering is technological expertise in developing market ready solutions with young, innovative companies, through cooperative technology development, field testing and other business development activities. Besides, we have the capability to accelerate your product development and market access.
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