Summary for ferrous sulphate surplus Discussion
ferrous sulphate surplus from pickling is discussed as a by-product with possible reuse markets, but the replies are cautious. Marc Burrows asks who might buy zinc ferrous sulfate heptahydrate from a steel pickling process, noting its known uses in fertilizer and wastewater treatment. Chad Dannemann says municipal water treatment plants use ferrous sulfate as a coprecipitant to help clarification, but warns that the zinc content may make it unsuitable for that application. R Strong adds that it is also used as a moss killer. Overall, the thread suggests potential outlets in water treatment or lawn/garden products, but no one identifies a specific buyer or confirms that the zinc-bearing material would be acceptable for all of those uses.
Q. We are a steel manufacturer who also have an in-house kettle. We have a large surplus of the bi-product (Zinc ferrous sulfate
⇦ on
eBay or
Amazon [affil link] Heptahydrate)generated by our pickling process. Our problem is what to do with it. I know that it has been used in fertilizer and waste water treatment but I can’t find any info anywhere on who would be interested in buying this bi-product. Any help would be much appreciated.
Marc Burrows
Steel Manufacturer – Montreal, Quebec, Canada
2004
A. Municipal water treatment plants use the ferrous that you are describing as a coprecipitant to aid in clarification. I don’t know about the zinc though, I am guessing that might spoil it for that use.
Chad Dannemann
Severn Trent Services – Conroe, Texas
2004
A. ..also used as a moss killer, for what it’s worth!
R Strong
– Llareggub, Wales
2004