The production of ammonium metatungstate (AMT) is closely tied to the distribution of tungsten resources, with China being the undisputed leader in this field. According to the International Tungsten Industry Association (ITIA), over 80% of global tungsten reserves are concentrated in China, particularly in Jiangxi and Hunan provinces. While precise statistics on AMT’s annual production are difficult to isolate due to its role within the tungsten supply chain, industry estimates suggest global AMT production ranges between 5,000–8,000 tons per year (calculated as WO₃ equivalent), accounting for 5%–10% of the tungsten compounds market.
Chinese companies account for over 90% of global AMT production, with major production hubs in Ganzhou, Jiangxi, and Xiamen, Fujian. In contrast, production in the United States, Europe, and Japan is minimal, relying heavily on imports. This pattern is similar to ammonium paratungstate (APT), which has a global annual production of approximately 80,000–100,000 tons. Although AMT’s production is lower than APT’s, its demand in specialized applications makes it significant. In recent years, stricter environmental policies in China and restrictions on tungsten mining may impact AMT production growth.
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