目的 以小颗粒状危化品计量系统中的加料方式作为研究对象，研究危化品计量系统中的加料方法及技术参数。方法 基于物料理化特性和加料的安全技术要求，利用重力式加料原理来研究适合危化品的加料方法。结果 通过控制加料门的开合度与时间长短实现了连续变速加料，可避免物料的冲击，提高了计量精度。结论 建立了适合危化品加料的工艺方法，对危化品的安全计量提供一定的技术借鉴作用。

The work aims to study the feeding method and technical parameters in the measurement system of small granular hazardous chemical substance, with the feeding mode in the measurement system of the small granular hazardous chemical substance as the research object. Based on the physical and chemical characteristics of the material and the technical requirements for feeding safety, the gravity type feeding principle was used to study the feeding method suitable for hazardous chemical substance. By controlling the feeding door’s opening degree and the time length, the continuous variable-speed feeding was achieved, which could avoid the impact of the material and improve the measurement accuracy. The technological process suitable for the feeding of hazardous chemical substance is established and it provides certain technical reference for the safe measurement of hazardous chemical substance.