Experiments on addition of fertilizer-grade DCP in production of SSP

In order to making use of fertilizergrade DCP( byproduct of feedgrade DCP production),experiments on addition o f fe rtilizergrade DCP in production of SSP have been done in Dechang Chemical Industry Co., Ltd. The process of test and the results are described . When the mass ratio of fertilizergrade DCP/phosphate ore is 15/85, t he raw material cost per ton SSP is reduced by 5.26 RMB Yuan. Based on the data, for a plant with capacity of 30 000 tons SSP/a, the economic benefit reaches 157 800 RMB Yuan, meanwhile, 2 385 tons fertilizergrade DCP is treated , physical properties of SSP improved, and conversion ratio of SSP increased.