A dry extraction magnetic vibration plate. The clay-powder-coated squares are strong magnets; the entire surface vibrates, sending clay powder down the ramp, leaving magnetic impurities stuck to the squares. Photo courtesy of editor Zongjun Li. Editorial Conversation: Chapter 7: From Yixing Ore to Zisha Clay Jason M Cohen 31 Aug 2023 Share on Twitter Share on Facebook Share on LinkedIn Share on Pinterest Share via Email Copy link The show is also available on YouTube and Spotify. Podcast Jason M Cohen Master of Ceremonies at Tea Technique. Founder & CEO of Simulacra Synthetic Data Studio. Previously: Founder of Analytical Flavor Systems & Founder of the Tea Institute at Penn State (defunct). Comments