1. Gravity separation
It is the most commonly used beneficiation method for zircon sand ore. The proportion of zircon sand is relatively large, and the proportion of impurities associated with it is relatively small. Moreover, the content of zircon sand in seaside placer is low, so in the roughing stage, most of the beneficiation of zircon sand adopts the energy-saving and efficient gravity separation method. Zircon placer is roughed and enriched by gravity separation equipment such as jig and shaker table. Abandon the gangue associated with zircon sand such as quartz, feldspar, biotite and other impurities.
It is also a method for separating gangue and impurities associated with zircon sand. Commonly used collectors are fatty acids, regulators are sodium carbonate, inhibitors are sodium silicate, activators are sodium sulfide and heavy metal salts. Since there are many associated minerals in zircon placer, the flotation separation method also needs to design the process and flotation system according to the specific composition of the minerals.
3. Electric separation
The method is to use the difference in magnetic permeability between minerals to separate zircon sand from associated ores (ilmenite, hematite, chromite, cassiterite, rutile) and non-conductive minerals (zircon, monazite, garnet, apatite) separation. The electro-separation method has high requirements on the minerals, and the minerals usually need to be deslimed, classified and dried before the mineral processing.
4. magnetic separation
The method is used to separate the magnetic substances in the rough concentrate of the zircon sand gravity separation, and the wet magnetic separator is commonly used for the zircon sand separation. Designing a reasonable magnetic field mechanism and magnetic field strength according to the specific mineral composition has a great effect on the magnetic separation of zircon sand.