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好些年来,于齐诺尔—敦刻尔克3号烧结机(400米~2)的技术可靠性和操作指标业已大大改善了。从1972年到1981年,这个厂的产量从年产300万吨稳步增加到了500万吨。为达到这个目的,他们从事了以下几项艰巨的工作: 1) 维修体制改进(停产时间从6～7%降到了3～3.5%) 2) 添加生石灰(直到1970年几乎为1%),增加了产量。3) 布料后,由于采用松料器,提高了料层的透气性。4) 与法国钢铁研究所合作,研制和提出了良好的冶金方法和参数。尽管提高了产量,但从1972～1979年直至1981年,每吨烧结矿仍节能165百万焦耳,同时烧结矿冷强度获得改善。1982年和1983年初,主要通过提高料层高度(从35～45厘米提高到50～55厘米)来研究的新课题不是产率而是其经济效率。从节能的观点来看,取得了以下重大成果:在相同碱度的情况下,与1979～1981年相比较,每吨烧结矿节能225百万焦耳。最后,到1983年三月,其碱度从1.6增加到1.75时,其热耗也同时降低40百万焦耳/吨。与1973年～1979年这段时间相比,总的热耗至少降低了约450百万焦耳/吨烧结矿。在这一时期,虽然热耗下降了,但烧结矿的质量却获得了改善(冷强度变好,RDI指数和RI指数也得到改善)。为了获得这些成果,在烧结机上曾经做了许多基础研究和工业试验:混合料的结构、混合料在烧结机上的偏析和操作技术参数(最佳水分、机速、料层调度、返矿比等与烧结矿质量和产率的关系)等的研究。在该厂,要取得一些技术进步仍然是可能的,特别是采用冶金的措施。为此目的,目前正在实现过程自动化。实际上,自动控制功能只部分用于操作上。其中包括用IRSID(?)模型估算烧结终点,而其他则有待采用别的过程控制模型来完善。过程自动化将能改善工厂的操作参数,对于应用于研究和技术进步方面也是极有意义的手段。
For many years, the technical reliability and operating specifications of Sinor Dunkirk No 3 sintering machine (400m ~ 2) have been greatly improved. From 1972 to 1981, the plant’s output steadily increased from 3 million tons to 5 million tons. To accomplish this, they have done the following difficult tasks: 1) Improvement of maintenance system (downtime from 6 to 7% to 3 to 3.5%) 2) Add quick lime (up to almost 1% in 1970), increased Production. 3) Fabric, due to the use of loose material, improve the permeability of the material layer. 4) In cooperation with the French Institute of Iron and Steel, developed and proposed a good metallurgical methods and parameters. Despite the increase in production, the energy savings per ton of sinter remained at 165 million joules between 1972 and 1979 and 1981, with an improvement in the cold strength of the sinter. The new subjects studied in 1982 and early 1983, mainly by increasing the height of the layers (from 35-45 cm to 50-55 cm), were not productivity but their economic efficiency. From the point of view of energy conservation, the following major achievements have been made: saving 225 million joules per ton of sintered ore at the same basicity as compared with 1979-1981. Finally, by March 1983, when its alkalinity increased from 1.6 to 1.75, the heat loss was also reduced by 40 million Joules / tonne. The total heat loss has been reduced by at least about 450 million joule per ton of sinter over the period 1973-1979. During this period, the quality of sinter improved despite the reduced heat loss (better cold strength and improved RDI and RI). In order to obtain these results, many basic and industrial experiments have been carried out on the sintering machine: the structure of the mixture, the segregation of the mixture on the sintering machine and the technical parameters of operation (optimum moisture content, machine speed, material layer scheduling, And the relationship between sinter quality and yield) and other research. At this plant, it is still possible to make some technological advances, especially with metallurgical measures. To this end, process automation is currently under way. In fact, the automatic control function is only partially used for operation. Including the use of IRSID (?) Model to estimate the sintering end point, while others are subject to improvement using other process control models. Process automation will improve plant operating parameters and is a significant means of applying research and technological advances.