This paper discusses the effect of NaCl on the secondary oxidation rate of hot-briquetted iron (HBI) during its transportation to consumers in Russia, former Soviet republics, and other foreign countries by both rail and water transport. This results in distinct atmospheric conditions surrounding the briquettes, leading to varied oxidation processes. This study is significant as the oxidation rate directly affects the metallurgical properties of the briquettes. The article presents experimental investigations on the impact of different NaCl concentrations (0–4%) in water, which evaporates into the atmosphere surrounding HBI, on its reactivity. The findings reveal that the reactivity of briquettes increases with up to 4% NaCl content in the water surrounding the HBI. Consequently, the iron oxidation rate in the briquettes also rises, with reactivity increasing from 0.234 to 0.412 nm³/(ton·day) and the rate from 0.0833 to 0.1459 kg/day. These results suggest that seawater, particularly with NaCl content up to 4%, significantly impacts the iron oxidation rate in HBI. Therefore, when transporting by sea, it is essential to consider this influence and implement measures to mitigate this type of oxidation.

本文讨论了氯化钠对热压块铁（HBI）通过铁路和水路运输到俄罗斯、前苏联加盟共和国和其他国家消费者的过程中二次氧化率的影响。这导致煤球周围的大气条件不同，从而导致不同的氧化过程。这项研究意义重大，因为氧化速率直接影响型煤的冶金性能。本文介绍了蒸发到 HBI 周围大气中的水中不同 NaCl 浓度（0-4%）对其反应性影响的实验研究。研究结果表明，随着 HBI 周围水中的 NaCl 含量达到 4%，煤球的反应性会增加。因此，球团中的铁氧化速率也升高，反应活性从0.234增加到0.412 nm ³ /(吨·天)，氧化速率从0.0833增加到0.1459 kg/天。这些结果表明，海水，尤其是氯化钠含量高达 4% 的海水，显着影响 HBI 中的铁氧化速率。因此，在海上运输时，必须考虑这种影响并采取措施减轻这种氧化。