注：1、灰質(zhì)氧化礦石(脈石以方解石為主，堿度≥0.8，燒失量質(zhì)量分?jǐn)?shù)達(dá)18％以上)的評價(jià)，可采用碳酸錳礦石的工業(yè)指標(biāo)；2、自熔性、堿性的錳礦石，可酌量降低其富礦錳晶位指標(biāo)；3、當(dāng)碳酸錳礦石的灼失量較高，雖然錳的質(zhì)量分?jǐn)?shù)略低于25％，但焙燒后錳含量可達(dá)到氧化錳富礦礦石標(biāo)準(zhǔn)時(shí)，這類碳酸錳礦石也可作為富錳礦石考慮。
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