Iron removal from silica sand is an important process in silica
sand processing and sand washing plant. The iron content in silica
sand products directly affects the quality of products, which is an
important index to evaluate the quality of quartz sand. Hengyang
provides silica sand (dry type or wet type) magnetic separation
system, It combines with crushing & grinding process, it uses the
high gradient magnetic separator, plate magnetic separator and
magnetic drum separator, so High, medium and low intensity magnetic
separation shall be carried out on silica sand respectively to
effectively remove mechanical iron, coated iron, strong magnetic
and weak magnetic iron materials in silica sand.
Silica Sand Magnetic Production Process Features
1. High, medium and low intensity magnetic separation process are
used in combination, with a wide range of iron removal;
2. Appropriate magnetic separation process layout, good iron
removal effect;
3. Thoroughly remove iron material, iron content reaches less than
20ppm or lower;
4. The production line has a wide range of applications and can be
applied to all kinds of silica sand;
5. Simple process layout and convenient operation.
Silica Sand Magnetic Production Process Technical details
In wet separation process , the classified silica sand slurry is
concentrated to a certain concentration by slurry disliming and
storage tank, and then through the drum magnetic separator to
remove the strong magnetic iron material, and then enters the plate
type magnetic separator with magnetic field strength around 1T to
further remove the residual strong magnetic materials and parts of
the weak magnetic materials, and then enters the high gradient
magnetic separator with the magnetic field intensity of 1.5T - 2T
to remove residual weak magnetic iron material. Magnetic separation
tailings enter into the tailings settling pond for further
treatment, and the finished products enter into the finished
product pool or into the next step of purification process. In dry
separation process, silica sand is first ground to a certain
fineness, and a multi-stage dry magnetic separator is used to
remove mechanical iron and coated iron in quartz sand.
