メタタングステン酸アンモニウム(AMT)の価格は、タングステン市場全体の変動に影響され、主に原材料コスト、生産プロセス、下流需要によって決まります。WO₃換算で、AMTの市場価格は通常、1トンあたり3万~4万ドル(2025年3月時点で約21万~28万元人民元)で変動します。近年の動向は以下の通りです:
• 2018~2020年:タングステン価格が低迷し、グローバル経済の減速と在庫過剰により、AMT価格は1トンあたり2.5万~3万ドルで安定していました。
• 2021~2022年:パンデミック後の産業回復によりタングステン需要が回復し、AMT価格は一時1トンあたり3.5万ドルに上昇しました。
• 2023~2025年:価格は安定していますが、新エネルギーや触媒用途の需要により、緩やかな上昇が予想されます。
パラタングステン酸アンモニウム(APT、1トンあたり約3万ドル)と比較して、AMTは生産プロセス(例:イオン交換法)が複雑で、高付加価値市場に位置するため、やや高価です。タングステン鉱石の価格(WO₃ 1トンあたり1.5万~2万ドル)が主なコスト要因で、AMT生産コストの60%~70%を占めます。
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