Yunnan Phosphate Rock Flotation Test

Preparation of phosphate rock is the main raw material for phosphate fertilizer and chemial plant. Phosphate fertilizer needed to grow crops to provide the main source of phosphorus. If the supply of phosphate rock and lasting stability in the production of phosphate fertilizer could meet the needs of our country's agriculture and sustainable development, the country's food security, protect the sustainable development of China's phosphate industry to national security and stability is of great significance.Phosphate mining is one of our strengths, very rich reserves. With the geological work of the deep human development, phosphate reserves there will be new growth. However, China's phosphate resources are quite unevenly distributed, more than 80% of the reserves concentrated in the south-west of Yunnan, Guizhou, Sichuan and Hubei in central-south Hunan Province and at the same time in low-grade phosphate rock, less rich. China's lower than the 18% grade of phosphate rock reserves of about 50, P2O5 greater than 30% of the rich reserves accounted for only 22.5 percent of the national reserves. National average grade of phosphate rock P205 was only about 17%, so most of the phosphate ore dressing must be approved by the rich in order to meet the high concentrations of phosphoric acid and phosphate fertilizer production requirements. Therefore, to carry out phosphate mineral processing technology for the development and utilization of China's phosphate rock, technology reliable concentratic plant, the production of phosphate concentrate qualified to improve the comprehensive utilization of resources and value-added, is of great significance.Phosphate rock ore dressing flotation is the most effective methods. Yunnan on this issue to be a high silica gel for phosphate rock flotation selection process, flotation process, the pilot Flotation pharmaceutical studies to determine the best program of flotation. The mine a phosphate rock from Yunnan, with P2O5 25.41%, SiO2 31.66%, higher, harmful elements MgO, Fe2O3, Al2O3 content were lower; P2O5 there is a higher value. Ore using a rough flotation and a sweeping flotation process, using the mixed of new collector YZ-10 as a collector, tune in pH value of 9.5 to 9.0, inhibitor DX-12 (rough+sweep) 400g/t+200 g/t, collector YZ-10 (rough +sweep) 400g/t+400 g/t conditions, may be available P2O5 average grade of 30.62 percent,83.87 percent recovery rate of phosphorus ore.I investigate the regulators,collectors of the flotation in this article. The most important regulator is sodium carbonate, and in the sodium carbonate solution, the major components are HCO3- and CO32-. I think the complex collector adhesive on the mechanism of phosphate compound collector in the absorption of phosphate rock surface is in fact the main chemical adsorption, but absorption physical and chemical absorption of the result. Sodium silicate and fluridizer is the role of inhibitors, in the promotion of co-generation of colloidal silica, silica-reinforced plastic and HSiO3- inhibiting effect of the SiO2-.