本文介绍的粉体输送系统新技术是以近年兴起的冶金重大技术──高炉富氧喷煤技术的研究和应用为背景。系统中开发了以下新技术：输送异常状态判定仪、在线固体流量测定仪、新型粉体均匀分配器、稳定浓相输送技术及有关多相流数学模型等，上述技术对其它行业的粉粒体气力输送过程也有借鉴之处 The new technology of powder conveying system introduced in this paper is based on the research and application of blast furnace oxygen-enriched coal injection technology, a major metallurgical technology emerging in recent years. The following new technologies have been developed in the system: transport abnormality determinator, on-line solid flowmeter, new powder uniform distributor, steady-state dense phase transport technology and mathematical model of multi-phase flow, Pneumatic conveying process also has reference