我国的菱铁矿资源丰富,贵州、陕西和甘肃等省的储量占其铁矿储量的一半,是我国重要的铁矿资源。我们对下述矿样的研究表明,采用弱磁选-强磁选-反浮选流程,可以获得较好的指标。试样中菱铁矿的化学组成为(Mg·Fe)CO_3,其中FeCO_3占88.3%、MgCO_3占8.4%、MnCO_3占3.3%。单矿物含铁42.6%。定名为镁菱铁矿。矿石中有用矿物为菱铁矿、磁铁矿及少量褐铁矿、 China has rich siderite resources. Guizhou, Shaanxi and Gansu provinces account for half of its iron ore reserves, making it an important iron ore resource in China. Our research on the following samples shows that the weak magnetic separation - strong magnetic separation - reverse flotation process, you can get better indicators. The chemical composition of siderite in the sample is (Mg · Fe) CO_3, with FeCO_3 accounting for 88.3%, MgCO_3 accounting for 8.4% and MnCO_3 accounting for 3.3%. Single mineral iron 42.6%. Magnesium iron ore named. Mine useful minerals are siderite, magnetite and a small amount of limonite,