Glass sand production by flotation and magnetic separation technology.

Studies were carried out of a washed sand from the Aghires deposit, Rumania. The sand contained around 1% weathered feldspars and 1.5% heavy minerals. Reverse flotation was carried out, followed by magnetic separation of ferromagnetic and paramagnetic contaminants. A high quality sand was obtained, suitable for use in the glass industry. Using pneumatic flotation cells, the sand loss was only 2-2.5% and the cell had improved energy consumption and low investment and maintenance costs. The flotation concentrates had contents of 8.9-9.5% TiO2 and 6.2-7.1% Fe2O3 and could be suitable as raw materials for the production of titanium concentrates.
Studies were carried out of a washed sand from the Aghires deposit, Rumania. The sand contained around 1% weathered feldspars and 1.5% heavy minerals. Reverse flotation was carried out, followed by magnetic separation of ferromagnetic and paramagnetic contaminants. A high quality sand was obtained, suitable for use in the glass industry. Using pneumatic flotation cells, the sand loss was only 2-2.5% and the cell had improved energy consumption and low investment and maintenance costs. The flotation concentrates had contents of 8.9-9.5% TiO2 and 6.2-7.1% Fe2O3 and could be suitable as raw materials for the production of titanium concentrates.