The common processes for the selection of seashore sand mines are traditional re-election, dry magnetic separation and electro-election combined processes. In recent years, the wet selection process has also begun. Liu Lihua and others studied the respective characteristics of the traditional selection and wet selection process. It was pointed out that the wet selection process first groups the raw materials by wet magnetic separation, so that the mineral composition of each component is simplified and further separated, and then re-elected, further mineral enriched magnetic job, and finally with magnetic separation and flotation of iron ore to titanium, zircon and monazite concentrate qualified selected out. The basic solution to the traditional beach placer featured many times alternating wet and dry issue, reducing the overall degree of recovery of useful mineral raw materials in the process of sorting metal loss, increased.
A. Gour et al. studied the flotation behavior of fine spar and zircon. The effects of parameters such as pH value of the slurry, type of collector and type of inhibitor were investigated. The test results show that the zircon is much more floatable than fine-grain. The amphoteric collector Porocoll FS-R is better. At pH = 4, zircon and fine spar are well separated.
Guangzhou Nonferrous Metal Research Institute conducted a comprehensive utilization study on a typical coastal sand mine in North Korea and achieved good results. The ore contains useful minerals such as magnetite, ilmenite, zircon and a small amount of monazite. After pre-screening, a small amount of low-grade sieve product is discarded. The sieved product is sorted by the new TGL-0610 tower spiral chute. The spiral coarse concentrate is selected by ferromagnetic weakening of ferromagnetic minerals. After wet selection of ilmenite in non-magnetic products, the non-magnetic products are further selected by shaker to obtain a shaker concentrate containing 54.10% of ZrO2. The ilmenite and shaker concentrate are dried and further selected to obtain 64.47% grade ZrO2, 49.20% of the original zircon concentrate and grade TiO2 of the ore recovery rate of 84.20%, and the recovery rate of the original mine is 57.94%. The integrated ilmenite concentrate.
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