This paper shows that the existing siderite ore preparation techniques do not allow achieving high blast-furnace smelting levels as compared with using black iron ore concentrates with a high iron content. To make blast-furnace smelting more efficient, it is necessary to use the metallized product made by regenerative siderite ore roasting. The technology developed for this roasting allows producing metallized concentrate with a Fe content of 65–68%. The main provisions of regenerative siderite ore roasting in shaft furnaces are formulated, and the three-zone shaft furnace design proposed for implementing this process. The thermal and consumption parameters of the process are provided as well as the lean gas circuit of regenerative ore roasting. This circuit allows significant cutting the expenses. The metallized siderite ore product with a high iron content allows gaining major economic benefits in blast-furnace production.

中文翻译：

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竖炉蓄热式菱铁矿焙烧技术开发

本文表明，与使用铁含量高的黑铁精矿相比，现有的菱铁矿制备技术无法实现高炉冶炼水平。为了使高炉冶炼更高效，必须使用再生菱铁矿焙烧制成的金属化产品。为这种焙烧开发的技术允许生产铁含量为 65-68% 的金属化精矿。制定了竖炉蓄热式菱铁矿焙烧的主要规定，并提出了实施该工艺的三区竖炉设计。提供该过程的热参数和消耗参数以及再生矿石焙烧的贫气回路。该电路可以显着降低费用。