In this paper, we perform thermotechnical inspection of the operation of Lurgi-278A, OK-306, Lurgi-552A, and Lurgi-552B of SevGOK PJSC firing machines with various operating areas. The operation of various elements of the firing machine, technological drying zones, heating, firing, recuperation, and cooling was studied under industrial conditions. According to the JSC “VNIIMT” method, the following processes were analyzed and performed: the thermotechnical scheme structures of the firing machines and their operating parameters, the thermotechnical calculations of heat transfer and gas dynamics in the layer, the gas-air flow parameters of the firing machine, and the optimizing calculations in order to increase the specific productivity. As a result, technical solutions were developed to increase the specific hourly productivity of firing machines up to 1 t/m2 while maintaining and improving the quality characteristics of the finished pellets.

中文翻译：

---

VNIIMT 方法的改进和实际应用在操作区域为 278、306 和 552 m2 的燃烧输送机的热工方案优化中

在本文中，我们对 SevGOK PJSC 烧成机的 Lurgi-278A、OK-306、Lurgi-552A 和 Lurgi-552B 的运行情况进行了热技术检查，这些设备具有不同的操作区域。在工业条件下研究了燃烧机、工艺干燥区、加热、燃烧、回收和冷却的各种元件的操作。根据JSC“VNIIMT”方法，对以下过程进行了分析和执行：燃烧机的热工方案结构及其运行参数，层内传热和气体动力学的热工计算，气体-空气流动参数。烧成机，优化计算以提高比生产率。因此，