共查询到20条相似文献,搜索用时 612 毫秒
1.
In order to maximise the reduction of pig iron cost in an ironmaking process, and at the same time ensure the output and quality of the pig iron, a design and optimisation system for the charging ingredients and structure in an ironmaking system was established using metallurgical theory. The system includes six modules, namely, sinter metallurgical performance testing and analysis, sintering burdening design, sinter component and property prediction, blast furnace burdening design, blast furnace batching calculation and ironmaking system burden optimisation. Based on actual production, testing and material balance theory, the system integrated these modules on VB and MATLAB using a series of intelligent algorithms, such as the BP neural network, multiple objective linear programming, genetic algorithms and so on. As a result, the optimum burden composition and structure of the sinter and blast furnace that satisfied all the constraint conditions could be obtained. Standing as a pinnacle of the global ironmaking production, the system can design and optimise not only the sintering burden, but also the blast furnace burden. Compared with the traditional production testing and hand calculation in the ironmaking system, the project can greatly reduce the production risk and greatly increase the calculation accuracy. Industrial application shows that the system is especially beneficial to reduce the ironmaking cost and at the same time ensure the output and quality. 相似文献
2.
3.
The process state of iron ore sintering is characterised via the bed permeability, the temperature rising point, the burn rising point and the burn through point. The intelligent control strategy of sintering process based on fan frequency conversion is put forward. The stability of process state is firstly evaluated based on the knowledge of domain experts. If process state is fluctuating, an expert controller is activated to realise a normal production. If process state becomes steady, then a fuzzy controller is activated to obtain the optimisation of process state and reduce the power consumption of main exhaust fan. The closed-loop control of sintering production showed that the system can realise the optimisation of sintering process state, and reduce the energy consumption of sintering production while ensure the stability of sinter quality indices, it theoretically saves power consumption of 1×104?kWh every day. 相似文献
4.
5.
6.
7.
8.
In this study, the optimisation model of fuel distribution base on numerical simulation was proposed to reduce the fuel consumption of sintering process. The simulation model of sintering process was carried out according to the heat and mass transfer, and the physical and chemical reactions of sintering. Then the heat income and expenditure of solid mixture in different materials unit was analysed via the simulation model. And the fuel proportion was adjusted on the basis of the difference between total heat quantity and heat quantity that the materials unit required to reach setting temperature. This model was validated by sintering pot test, the simulation results of bed temperature at different depth were very close to the detection results. The sintering pot test shows that the sinter yield and quality indices had little change after the optimisation of fuel distribution, while the solid fuel consumption was decreased by 3.83?kg?t?1. 相似文献
9.
10.
11.
介绍了安钢烧结厂配加石灰石粉部分替代生石灰的实验室试验和工业生产情况。试验和生产结果表明,在安钢原料及工艺条件下,烧结生产中配加5%左右的石灰石粉替代生石灰,对烧结矿产质量及能耗指标无负面影响,而且可缓解生石灰采购压力,降低熔剂成本。 相似文献
12.
13.
文章提出了一种多功能冶金企业烧结矿制造过程控制系统的设计.其对于提升我国冶金企业烧结生产效率、烧结矿的产量与质量、降低烧结成本,提升我国多功能烧结控制系统的技术含量和竞争力,推动相关行业发展均具有积极意义. 相似文献
14.
15.
16.
根据生产管理部门提出的原料混匀配料计算、烧结配料计算、高炉配料计算的要求,将炼铁高炉生产过程中直接关系到二炼铁厂生产成本、经济效益及产品质量的一系列配料计算的组合匹配转化为数学问题,用数学方法解决炉料结构的实际问题,建立解决这一问题的数学模型,通过软件设计,实现最佳的经济效益,形成一套从原料到烧结到高炉的完整配料计算方案体系。该系统可以依据设定的配矿结构,计算出烧结矿成分、成本,并进一步计算出生铁成本的变化情况。 相似文献
17.
18.
19.
钢铁行业遭遇大面积亏损的困难局面,降低产品成本已经成为企业生存的必要手段。介绍了承钢1#烧结机配加红土镍矿降低烧结成本的生产实践。红土镍矿入厂后与球团返矿进行预混合,消除其水分含量高,不易混匀的特性;通过烧结杯实验,了解钒钛铁精粉与混合镍粉的烧结特性,确定现场生产的最佳原料结构,并在1#烧结机进行现场生产实践。烧结过程进展顺利,烧结矿质量指标基本平稳,烧结固体燃料消耗略有增加,烧结矿成本有所降低。 相似文献