Cadmium and Phosphorous Fertilizers: The Issues .
01.01.2014· Varying amounts of Cd in the phosphate rock move through the beneficiation and acidulation processes during fertilizer manufacture. Amounts transferred depend on the manufacturing Table 1. Cadmium contents (mg/kg) of sedimentary and igneous phosphate rocks . Country Deposit Average Cd Range Sedimentary Deposits China Kaiyang <2 â€" Israel Zin Undifferentiated Arad Oron .