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该厂由于过磷酸钙扩产，化成室负荷增大而引起氟气外溢和切削器断轴事故。经采取加大主轴直径、加大排风机风量等措施后，故障不再发生，过磷酸钙生产能力稳定提高，环境污染得到有效控制。
The plant as a result of SSP expansion, into the room to increase the load caused by the overflow of fluorine gas and cutter shaft accident. After taking measures to increase the diameter of the main shaft and increase the air volume of the exhaust fan, the fault no longer occurs. The production capacity of superphosphate is steadily increased and the environmental pollution is effectively controlled.