Abstract:
The test sample is quartz sand tailings from Wenchang, Hainan, and the main minerals are zircon, ilmenite, rutile, quartz, and a minor quantity of tourmaline, feldspar, magnesioferrite, and so forth. The original ore contains 0.23% ZrO
2, 0.47% TiO
2, and 97.80% SiO
2, and the zircon and titanium minerals are mainly distributed within the 0.15 mm to 0.063 mm particle size range, making them suitable for beneficiation and recovery. According to the nature of the ore, the re-election pre-election tailing throwing process flow of spiral chute, comprising one roughing and one scanning, heavy mineral combined shaking table selection, yielded a mineral yield of 1.71%, containing ZrO
2 12.92%, TiO
2 23.15%. The recovery rate of the pre-election rough concentrate was 94.93% and 84.13%, respectively. Furthermore, the pre-selected crude concentrate was subjected to a combined high-gradient strong magnetic separation-heavy separation process, which yielded a qualified ilmenite product and high-grade zircon and titanium mixed minerals. The high-grade zircon and titanium mixed minerals were then subjected to flotation separation, resulting in the production of qualified zircon sand and rutile products. Additionally, the quartz sand present in the pre-selected tailings is purified through the process of "gravity separation-strong magnetic separation-scrubbing-classification", thus providing quartz sand for photovoltaic glass. This process achieves the comprehensive recovery of valuable components from the tailings, providing a reference for the development and utilization of similar resources.