尿基复合肥生产工艺探讨

介绍了国内最为普遍的两种尿基复合肥生产工艺,并进行比较。

硝铵装置改产复肥生产技术路线的探讨

对硝铵改产NPK复肥的原料路线、技术路线及生产方法进行分析探讨。

浅谈企业士气

士气是历代卓越领导者都极为重视的问题。 曹刿论战说:“夫战,勇气也。一鼓作气,再而衰,三而竭。彼竭我盈,故克之。”这段活讲的就是士气问题。历史上还有韩信的“背水一战”、项羽的“破斧沉舟”以及西晋时期的前秦将士“风声鹤唳、草木皆兵”等记载,都从正面或反面证实士气在战争胜负中的重要作用。此外。

Microstructure evolution of Al-Si semi-solid slurry by gas bubble stirring method

A novel technique of introducing gas bubble stirring during solidification was studied to prepare Al-Si semi-solid slurry. The microstructure evolution of the slurry during slow cooling process after stirring was investigated. The effects of the solidification rate on the microstructure of the semi-solid slurry were investigated under three different solidification conditions. The results show that fine non-dendritic slurry can be obtained using the gas bubble stirring method. Ripening and coarsening of primary Al grains are observed during the slow cooling process, and at last coarsened eutectic Si appears. Primary Al grains with different sizes and eutectic Si are obtained, corresponding to three different solidification rates.

氨酸转鼓造粒与高塔熔体造粒工艺比较研究

本文介绍了氨酸法料床直接反应工艺和半料浆法管式反应器生产工艺两种氨酸转鼓造粒工艺及高塔熔体造粒工艺生产复合肥料的过程,从产品成粒原理,工艺流程,工艺特点等方面进行了比较研究。氨酸法料床直接反应工艺有直接通氨的便利条件,控制造粒物料的p H更为便利;半料浆法管式反应器生产工艺造粒无须添加黏土,充分利用了氨与硫酸、磷酸一铵的反应热,高塔熔体造粒工艺生产高氮复混肥具有优势,产品无需进行干燥,能耗低。几种工艺在产品规格上各有各的优势,弥补了不同配方产品的需求,企业应根据实际要求选择合适的工艺路线。