混匀老系统端部料工艺改造

新(余)钢烧结厂老系统混匀采用的是人字形堆料法,取料机取到料条的端部时,只能取到表面一层或几层的物料,不能取到全断面所有料层的物料,因此端部料化学成分波动较大,换堆过程中对烧结矿成分的稳定影响较大。为此我厂借鉴新系统端部料改造的成功案例通过将取料机下一道工序的皮带与上堆料机的皮带用一根短程皮带连通,再通过堆料机将端部料均匀的加入到新混匀矿料条中。通过本次改造成功的改善了因端部料造成的混匀矿成份波动,稳定了烧结矿成分。

炼铁厂三烧车间提高碱度稳定率实践

本文针对涟钢炼铁厂三烧车间碱度稳定率在行业同类型烧结机偏低,而高炉大型化后对烧结矿质量要求进一步提高的状况,通过对烧结铁矿中和粉端部料、烧结配料室各原料下料稳定性、连续性、烧结炉前布料以及烧结矿取制样等的研究,实现了烧结矿碱度稳定率稳步提高,并在2019年进入行业同类型前列。

Determination of the Orthotropic Material Behavior of Stator Bars and of the Material Characteristics of the Space Brackets

The end windings of generators are excited to vibrations due to electromagnetic forces which can cause severe damage （especially in case of resonance） and noise. To avoid this, it is important to predict the natural frequencies and modes of the end windings with finite elements during the design process. Hence, a material model of the complete stator bar is necessary. This paper shows the development of such a material model. The composite structure of a stator bar is quite complex and makes it impossible to provide a quick calculation of the eigenvalues. That is the reason for using a suitable, homogeneously, geometry based solid model. Special attention was paid to the experimental determination of the material characteristics of the orthotropic composite space brackets. The numerical results have been evaluated against measurements. Eigenvalues, Young＇s modulus, and shear modulus have been experimentally investigated.

新钢烧结厂混匀矿稳质提产技术应用

针对新钢烧结厂混匀车间原料混匀的现状,提出三方面的技术改进措施,分别是混匀矿微量元素控制技术、混匀矿端部料处理、混匀矿产能提升技术,从而提高混匀车间混匀矿堆的产质量,优化含铁原料混匀的工序过程,并取得了一定的经济效益。