Beneficiation test of Helanshan Phosphate Mine Laboratory (2)

Taking Process III as an example, the number and quality flow obtained according to the process conditions listed in Table 2a are shown in Fig. 1. The chemical composition of the resulting final phosphate concentrate (concentrate I + concentrate II) is shown in Table 3. Its particle size composition is listed in Table 4.

According to the phosphorus concentrate product obtained in the flow of Fig. 1, the determination of the degree of separation is performed. The measurement results indicate that the first stage of coarse grinding first sorts out some of the phosphorus minerals that have been dissociated by the monomer, and then the second stage of the lean continuous body is finely ground to separate them, which is consistent with the granularity of useful minerals in the ore. First, choose different characteristics of difficulty. Therefore, the operation is convenient and the index is stable. However, as can be seen from the data in Table 4, in order to obtain a higher quality phosphate concentrate, the fineness of grinding should be below -0.045 mm.

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