A kind of suspension roasting ferromanganese separation treatment method of ferromanganese ore

Abstract

The invention relates to a suspension roasting manganese and iron treatment method of iron-contained manganese ore, and belongs to the technical field of mineral processing. The method includes the following steps that (1) the iron-contained manganese ore is crushed to be subject to ore grinding; (2) first-section low-intensity magnetic separation is carried out; (3) first-section low-intensity magnetic separation gangue is placed into a roasting furnace, gas and air are led in, and the first-section low-intensity magnetic separation gangue is subject to oxidizing roasting; (4) a reduction roasting furnace is adopted, and oxidization powder ore is placed into the reduction roasting furnace to be subject to reduction roasting; (5) roasted ore is subject to second-section low-intensity magnetic separation; and (6) first-section low-intensity magnetic concentrate and second-section low-intensity magnetic concentrate are merged to serve as an iron ore concentrate finished product. The suspension roasting manganese and iron treatment method is simple in technological process, large in equipment treatment amount, easy in product character control, capable of achieving industrialized application, capable of achieving energy conservation and environmental protection and capable of easily achieving large scale.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a method for separating ferromanganese by suspending roasting ferromanganese ore. Background technique [0002] my country's high-quality manganese ore and iron ore resources are increasingly scarce due to the huge consumption of the iron and steel industry. However, there are a large number of ferromanganese ore resources with high iron content in my country, which have not been effectively utilized on a large scale. The manganese minerals in the ferromanganese ore resources are mainly rhodochrosite and pyrolusite, and the iron minerals are mainly hematite, goethite, and limonite. , Siderite, etc., to realize the effective utilization of iron and manganese resources in ferromanganese ores is of great significance to alleviate the shortage of self-produced iron and manganese resources in my country. [0003] Patent CN 201510844742.7 relates to a low-grade high-iron man...

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Problems solved by technology

[0003] Patent CN 201510844742.7 relates to a reduction roasting process of low-grade high-iron manganese ore, which proposes to directly use low-grade high-iron manganese ore as an ore source, use a large-scale rotary kiln to reduce it into raw materials for preparing manganese sulfate, electrolytic manganese dioxide, and electrolytic manganese, and leaching filter residue magnetic selection and recovery of contained iron, this patent can realize the comprehensive utilization of manganese and iron resources, but the conventional calcination equipment of rotary kiln is used, the processing capacity is low, the reduction effect is poor, and the process of blending bituminous coal is complicated; patent 201410038273.5 involves a kind of enhanced The additive and method for separating iron and manganese from ferromanganese ore proposes to mix the crushed and ground ferromanganese ore to a certain particle size with the additive of the present invention, then successively agglomerate, dry, reduce and roast, and the roasted product is cooled and then broken , grinding, and magnetic separation to obtain metallic iron powder and MnO-rich non-magnetic materials. This patent can realize the separation of manganese and ferromanganese minerals to a certain extent, but it needs to be reduced at a high temperature above 1000°C for a long time to convert the iron minerals Reduction to metallic iron has disadvantages such as high energy consumption and difficulty in separating iron and manganese from the reduction product

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