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介绍３万吨／年小磷铵如何通过有限的技改，改产为１０万吨／年三元复合肥，并介绍试产三元复合肥的操作特点及改产后的经济效益。
Introduced 30,000 tons / year small ammonium phosphate through a limited technical transformation, changed to 100,000 tons / year ternary compound fertilizer, and introduced trial production of ternary compound fertilizer operating characteristics and economic benefits after conversion.