HematiteProcessing Technology

1. Roasting magnetic separation Roasting magnetic separation is one of valid methods to separate fine from ultrafine particles (below 0.02mm). When the components are complicated and other beneficiation methods fail to meet related indicators, it is strongly recommended. 2. Gravity separation, flotation, strong magnetic separation and combined process Flotation is common when separating fine from ultrafine hematite. There are two manners --- direct flotation and reverse flotation. Gravity separation and strong magnetic separation are more suitable for the separation of coarse particle (2-20mm). The use of specific beneficiation method and combined use shall observe types of ores.

1. Single siderite -magnetite mixture This kind of mineral has two separation methods. One is combined use of weak magnetic separation, gravity separation, flotation and strong magnetic separation where weak magnetic separation is responsible for recycling the magnetic iron ore while other methods are responsible for recycling the iron ore having weak magnetism. The other is the combining process of roasting magnetic separation and other separation methods. 2. Polymetallic siderite -magnetite mixture The beneficiation method is complicated. Generally, weak magnetic separation and other separation methods would be connected to perform beneficiation.