AMT의 생산은 몇 가지 주요 기술적 어려움이 존재합니다. 주요 난제는 다음과 같습니다:
- 순도 제어: 텅스텐 광석에는 종종 몰리브덴(Mo)이 포함되어 있으며, 이 물질은 텅스텐과 화학적으로 유사하여 완전히 분리하기 어렵습니다. 산업에서는 몰리브덴을 여러 번의 결정화나 선택적 침전 방법으로 제거하지만, 이는 비용을 증가시킵니다.
- 결정화 과정의 안정성: 용액 농도, 온도, 교반 속도에 약간의 변동이 생기면 결정 크기가 고르지 않게 되어 후속 응용에 영향을 미칠 수 있습니다. 또한, 폐액 처리도 큰 문제입니다. 산화법에서 생성되는 암모니아가 포함된 폐수와 이온 교환법에서의 산 세척액은 환경 규제를 충족할 수 있도록 적절히 처리해야 합니다.
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