[en] The effect is analyzed of organizational factors on blast furnace operating indices under contemporary intense smelting conditions: current banking time, fanning time, and compliance with the discharge schedule. The quantitative effect of these factors on blast furnace performance was established more the thirty years ago and needs adjustment. It is demonstrated that production losses associated with banking depend on duration and number, and production losses associated with fanning depend on duration, amount, and degree of blast pressure reduction. Dependences (equations) are determined for production loss connected with banking and fanning. The effect of banking and fanning time on the change in equivalent coke consumption is determined. Values obtained differ from those used previously. The effect of discharge schedule on furnace performance and specific coke consumption for AO EVRAZ NTMK loses its relevance.

[en] The current technologies for obtaining iron-containing materials without use of coke and blast-furnace processing are described. Brief description of mastered industrial technologies for direct iron production is given. Possible trends in the development of direct iron production technologies are indicated. (paper)

[en] A paper about the corrosion in blast furnaces is presented. after studies on distribution and installation of radioactive sources with low activities in the refractory lining, it was possible to develop a new technique of thickness evaluation and attendance of wearing in the furnace lining. (E.G.)

[en] A critical review on the alternative processes to the blast furnace, involving both solid and liquid state reduction is presented. Process comparison allows to identify advantages and disadvantages of each type of processes as well as to highlight the major challenges faced in order to compete with the traditional iron making route: the blast furnace, which today rules the production of iron units worldwide. (Author) 31 refs

[en] In recent past, Jindal Steel and Power Limited, Raigarh unit, has increased the hot metal production capacity by the renovation of the existing blast furnaces. Therefore, the blast furnace coke demand has increased. This excess demand for metallurgical coke production from the existing non-recovery stamp charge coke oven plant was a very tough challenge, because the coke oven plant was already running at rated production capacity. Therefore, to fulfill the requirement of excess coke and to deliver more value to the customers, several initiatives have been taken by the Coke Oven and Technical Services Department within the existing setup. Few approaches had been adopted to increase the productivity of coke by ∼20% without deteriorating the resultant coke quality. This paper describes in details the steps taken to enhance the productivity of non-recovery stamp charge coke oven plant. (authors)

No abstract available

[en] Steam reforming (SR) of bio-oil with blast furnace (BF) slag was investigated via thermodynamic analysis in this paper. As the temperature and S/C ratio (the mole ratio of steam to carbon in the bio-oil) rose, the hydrogen yield first increased rapidly and then flattened out, and under the temperature of 700°C and S/C of 6:1, the hydrogen yield can reach 86%. Under the above conditions, the slag and its amount hardly have any effect on the products of bio-oil SR, but it can provide the heat that the strongly endothermic SR process need. To ensure the SR reaction under the above condition, the B/S ratio (the mass ratio of bio-oil to BF slag) should be controlled at 1:5.27. (paper)

[en] This article has reviewed the production status, total reductant consumption, raw materials and operation principle indexes of large blast furnaces in China from 2015 to 2016. The developing actuality of Chinese large BFs has been quantitatively analyzed and the existing problems have been proposed clearly. Based on that, maintaining production stable, enhancing the quality of raw materials and improving the operation principles are suggested. Large BFs take advantages of high-quality hot metal, energy saving, cost-cutting, high mechanization and automation levels and are sufficient to meet the challenges of economic crisis, environmental pressure and security risk form the future. Thus, the number of large BFs in China will continue to increase in the future. (authors)

[en] The fitness for granulation of a ore mixture used to make a series of sintering in a pilot plant is studied. The quality indexes and the phases composition of sintering is determined. The best sintering structure is checked. A series of iron ores is classified as the granulation index (G index). The G index evolution of the ore mixture used by ACERALIA for the last years is shown. An increase in productivity and a decrease in coke consumption in the sinter strand is observed as the G index improves. (Author) 15 refs

[en] This document presents a literature study of the impact of glycolate on technetium chemistry in the Savannah River Site (SRS) waste system and specifically Saltstone. A predominant portion of the Tc at SRS will be sent to the Saltstone Facility where it will be immobilized. The Tc in the tank waste is in the highly soluble chemical form of pertechnetate ion (TcO₄ ^-) which is reduced by blast furnace slag (BFS) in Saltstone, rendering it highly insoluble and resistant to leaching.