Abstract: An ore dressing process for medium-grade and low-grade mixed collophanite includes the following steps: S1; crushing ores to obtain crushed ores; S2: screening the crushed ores to obtain fine-fraction ores and coarse-fraction ores divided into at least two size fractions; S3: performing a photoelectric separation to the coarse-fraction ores of different size fractions to obtain photoelectric separation concentrates and photoelectric separation tailings of each size fraction; S4: combining the photoelectric separation concentrates of the each size fraction to obtain pre-enriched concentrates; S5: combining the fine-fraction ores and the pre-enriched concentrates, and then performing an ore grinding to obtain minerals to be separated; S6: adding water to the minerals to be separated to obtain a floatation pulp, and then performing a floatation to obtain phosphate concentrates and tailings.

Abstract: The present invention discloses a monazite and apatite paragenetic ore enrichment method. High-grade and high-recovery-rate monazite concentrate can be obtained by adopting the method through steps of ore grinding, floatation, magnetic separation and low-acid advanced leaching treatment and re-floatation. In this process, the applicable range of ore pulp temperature is wide, the process flow is short, the ore dressing conditions are mild, the energy consumption is small, the used diluted acid can be cyclically regenerated and used, the pollution is small, the environmental stress is small and the recovery rate of low-grade monazite and apatite paragenetic ores can be obviously improved.

Abstract: The present invention discloses a monazite and apatite paragenetic ore enrichment method. High-grade and high-recovery-rate monazite concentrate can be obtained by adopting the method through steps of ore grinding, floatation, magnetic separation and low-acid advanced leaching treatment and re-floatation. In this process, the applicable range of ore pulp temperature is wide, the process flow is short, the ore dressing conditions are mild, the energy consumption is small, the used diluted acid can be cyclically regenerated and used, the pollution is small, the environmental stress is small and the recovery rate of low-grade monazite and apatite paragenetic ores can be obviously improved.