Kosaka Smelting and Refining Co., Ltd. · Japan
Who
Kosaka Smelting and Refining Co., Ltd.
Dowa Metals & Mining Co., Ltd. (100%)
What
antimony — refine, smelt
Capacity Nameplate capacity
500 t/yr antimony (USGS)
Actual output
Gated — subscribe to see actual output
Who they sell to
Gated — subscribe to see offtake agreements
How to reach them
No public sales route listed
Notes
Antimony refinery at Dowa's Kosaka complex (USGS Japan facilities table); antimony produced as byproduct of non-ferrous (lead/copper) smelting. Japan's antimony refinery output ~4,600 t/yr (2021). | output/status: unknown Also produces bismuth: 180 t/yr bismuth. Also produces tellurium: capacity not disclosed. Products stated: [{{'antimony': None: None, 'bismuth': None}: None, 'tellurium': None}] USGS lists the Kosaka refinery with 500 t/yr antimony (Sb content) capacity, and Japan produced an estimated 3,800 t of refined antimony in 2024. Kosaka Smelting & Refining describes itself as recovering antimony among about 20 metals at its Kosaka copper-lead smelter.