【摘要】 铁锰分离是锰矿床形成的一个先决条件。锰铁比值不但在各类岩石中基本稳定,而且在同一矿床的原生矿石和氧化矿石中也相当稳定;这说明氧化作用对锰铁分离影响不大,其比值的高低主要取决于沉积时的地球化学环境。Fe²⁺的存在,对锰的氧化和富集有促进作用,但Fe^2-氧化并形成高价铁氧化物后,降低了溶液的酸度,阻碍了锰的富集。更多还原

【Abstract】 The seperation of iron and manganese is one of the prerequisite ore forming, conditions of manganese deposits. Generally variations of the Mn Fe ratio are nearly constant either for various rocks or for the primary and oxidized ores in the same deposit. The effect of oxidization on the separation of Fe and Mn is of no significance The Mn/Fe ratio is chiefly depends upon the geochemical environment during their deposition. In the course of formation of manganese deposit, the existence of Fe²⁺ in solution plays an important part to promote the oxidation and the enrichment of manganese. However. after Fe²⁺ oxidized into ferric hydroxides, the pH value of the solution decrease and the enrichment of Mn will meet with obstruction.更多还原