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细磨铁精矿生球的焙烧,是球团矿过程中最重要的阶段。高炉用焙烧球的基本质量要求,已由作者在以前的一篇文章中加以叙述了〔1〕。焙烧的主要目的,是使生球的结构固结和使生球达到最大的氧化度。焙烧的结果取决于生球的性质和焙烧制度。原始生球的物质组成,具有特别巨大的影响。磁铁矿生球的固结,即比赤铁矿生球的固结效率较高和较简单。在制球团矿的实践中,提供焙烧装置的是湿球,因此焙烧的第一阶段是干燥。生球的干燥,象毛细多孔物质一样。这种干燥过程的机构,已由A.B.雷柯夫在其专著“干燥理论”中加以详细制定,本文不再加以探讨〔2〕。焙身,是在生球加热到100℃以后开始的。
Grinding fine iron ore pellets is the most important stage in the pellet process. The basic quality requirements for baking the ball for blast furnaces have been described by the author in a previous article [1]. The main purpose of roasting is to consolidate the structure of the green ball and maximize the oxidation of the green ball. The result of calcination depends on the nature of the green ball and the firing regime. The raw composition of the raw ball, with a particularly tremendous impact. The consolidation of magnetite spheres, ie, the consolidation efficiency is higher and simpler than that of hematite spheres. In the practice of making pellets, the roasting device is provided with a wet bulb, so the first stage of roasting is drying. The ball of dry, like capillary porous material. This drying process has been developed in detail by A. B. Reckov in his monograph The Theory of Drying and will not be discussed further in this paper [2]. Baked body, is heated in the ball to 100 ℃ after the start.