Abstract: In order to promote the research and development of kiln phosphoric acid process，and based on the previous work of our group，this review systematically summarizes the basic research development and status of KPA process both at home and abroad，including reaction thermodynamics，phosphate rock reduction mechanism and dynamics. The research development of KPA process on the principle，key parameters and important engineering problems in the KPA process is introduced，and the outline of key techniques and its solution scheme are pointed out. In light of the problems existing in the KPA process，it is suggested to intensify basic research of the KPA process and to perform industrial experiments.

Key words: KPA, thermodynamics, dynamics, the rotary kiln ring, wrapping

摘要： 为推进窑法磷酸工艺的开发研究，结合本课题组的相关研究工作，对国内外在窑法磷酸工艺中涉及的主要反应的反应机理、热力学以及动力学等方面的基础研究工作的历程和进展进行了综述，介绍了国内外窑法磷酸技术开发研究的概况与现状。从窑法磷酸工艺的主要参数、技术难点以及相应的解决方法等方面进行论述，指出了窑法磷酸工艺的关键技术以及相应的解决方案。针对窑法磷酸工艺目前所存在的问题，提出了进一步加强窑法磷酸工艺基础性研究和在此基础上尽快开展工程化研究和试验的建议。

关键词: 窑法磷酸, 热力学, 动力学, 窑圈, 包裹