First, the positive flotation process Flotation process is suitable for sorting a siliceous phosphate ore, using Na 2 SiO 3 and other silicate minerals while suppressing anionic collector with phosphate minerals being upright flotation process, better separation, such as Ningxia Helan Mountain Mine, the process flow is shown in Figure 1. Sedimentary metamorphic silicon-calcium phosphate is an easy-to-float apatite type phosphate rock. It uses Na 2 CO 3 and Na 2 SiO 3 to suppress silicon and calcium minerals. The anion collector is directly flotation of apatite. flotation process, the ore on P 2 O 5 containing 8.0 percent, by this process can be obtained phosphate concentrate grade of P 2 O 5 more than 35%, 83% recovery of phosphorous good indicator, such as Hubei Dawu Huangmailing beneficiation plant. Second, positive and negative flotation process Positive and negative flotation process for sorting calcium phosphate deposition, add Na 2 CO 3, Na 2 SiO 3 and other inhibiting silicate, anionic collector flotation of phosphate and calcium magnesium carbonate minerals, Then adjust the pH to 5.5-6.0 with H 2 SO 4 or H 3 PO 4 to inhibit the phosphate, and the anion collector reverse flotation of the carbonate mineral, so that the P 2 O 5 content of the phosphate concentrate can be increased to 35.17%, good ore dressing index of MgO reduced to 0.78%, R 2 O31.97%, and phosphorus recovery rate of 91.98%, such as Guizhou Yanfu Phosphorus Mine, the process flow is shown in Figure 2. Figure 2 Process of sedimentary calcareous phosphate ore reverse flotation Third, double reverse flotation process The double reverse flotation process is suitable for the most difficult colloidal phosphate rock in phosphate ore. The process first uses H 2 SO 4 or H 3 PO 4 to inhibit phosphorus minerals, and anionic collector reverse flotation dolomite and other carbonates. After the mineral is removed, the slurry is de-slurried and then the silicate mineral is reversely floated with a cationic collector. The process flow is shown in Figure 3. However, further research is needed on high-efficiency cation collectors and beneficiation processes, such as Yichang Phosphate Mine and Jingjing Phosphate Mine in Hubei. Figure 3 Double reverse flotation process of phosphate rock Features: Plasma Cutter Sheet Metal Machine,Cnc Plasma Cutting Machines,Fast Speed Plasma Cutter Sheet Metal,Cnc Plasma Cutting Machine HEBEI SENUF MANUFACTURE AND TRADE CO., LTD , https://www.senufmetals.com
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