14.1 New Industrial Minerals from Paint Waste Through Gasification Process
(Room 240-242)
11 Apr 18
9:30 AM
-
10:00 AM
Tracks:
Session 14: Appearance and Functionality, Session 14: Novel Materials
This paper will discuss a commercially viable, sustainable, industrial mineral derived from recycled paint waste. Using pyrolysis under specific processing conditions, recovered paint scrap is first converted into gas and used as energy. This process then creates an ash cake from the inorganic materials present in the original paint. The ash is mostly a combination of titanium dioxide and silicate minerals that once milled create a useful industrial mineral. The process currently generates approximately 20% ash byproduct by weight of initial paint scrap. With approximately 12 million pounds of post-industrial paint waste and approximately another 29 million pounds of post-consumer paint waste being landfilled in the US annually, this produces a new stream of about 4000 tons of sustainable industrial minerals. Initially, the ash is being developed as reinforcing filler for thermoplastics. One application being evaluated for these filled plastics is the production of new paint cans. However, after further refining and removing the carbon from the ash has shown that it can also be used back into industrial paints. Streams of scrap that have been evaluated for recycling so far include paint booth overspray collection during the manufacture of automobiles, and consolidated, post-consumer architectural coatings.