提高混匀料混匀效果的技术措施

介绍了攀钢采用先进的全新的现代化封闭原料场,分析了混匀矿质量对烧结和炼铁生产的影响,重点阐述了提高混匀矿质量的措施,通过加强对C型料场、混匀配料、混匀堆料的管理和加强岗位培训等措施,可大幅度提高混匀矿质量。     

龙(门)钢混匀料场的生产实践

龙钢通过扩建混匀料场,同时加强对一、二次料场的生产管理,严把预配料关,强化混匀堆料作业等,提高了混匀矿质量,稳定了烧结操作和烧结矿的化学成分.     

武钢工业港混匀矿的生产实践

介绍了武钢工业港近几年来在混匀工艺、设备、生产等方面的发展过程及技术进步。通过烧结厂用混匀矿后的生产对比，证明了原料进行混匀的必要性及重要性，并初步分析混匀所创的效益。通过与国内外混匀场的对比，结合武钢的自身条件，分析了武钢原料场存在的问题并提出了解决思路。     

武钢工业港混匀矿的生产实践

介绍了武钢工业港在混匀工艺、设备、生产等方面的发展过程及技术进步。武钢各烧结厂使用混匀矿后的生产实践证明了原料混匀的必要性和重要性，初步分析了混匀带来的效益。并结合武钢的条件，分析了武钢原料场存在的问题，提出了解决问题的思路。     

浅谈提高混匀矿质量的方法

结合武钢港务公司的生产实际,研究了混匀进料、配料、堆料、取料等工序过程中影响混匀质量提高的关键问题,探讨了如何提高混匀矿质量的方法及对策.在现在工艺设备不作大的改动前提下,通过提高管理水平及作业线的优化选择、配比的最优选择,消除及减少如杂矿、端部料等一些对混匀矿质量影响较大的因素.     

混匀矿造堆过程控制与适时调整

唐钢炼铁部通过优化混匀矿配料结构,控制混匀矿的Si02,稳定烧结矿的化学成分,不仅保证了烧结矿质量,而且降低了烧结矿原料成本.通过混匀矿造堆过程控制提高混匀矿产量,减少混匀矿成分波动,使混匀矿的生产组织与质量控制得以有机结合.通过堆计划的适时调整,保证混匀矿造堆实际成分与计划的一致性,提高了混匀矿质量,满足了烧结生产需要.     

上海一钢提高混匀矿质量的实践

对上海一钢公司混匀配料系统提高混匀矿质量的经验进行了总结分析。提高混匀矿质量的措施主要有：增加混匀矿的堆积层数，加强混匀矿堆积过程管理，加强混匀计量管理。     

提高混匀矿质量生产实践

优化混匀矿配比、适时调整混匀矿堆计划、控制混匀矿中的SiO2是降低烧结矿原料成本,提高混匀矿稳定性的有效途径。通过采取将成分差异大的同一品种物料在一次料场分开堆放、优化4BLOCK计划、除尘灰按计划连续切出、增加停机程序等措施减少了混匀矿成分的波动;通过完善混匀工艺操作规程和管理制度,保证了混匀矿的正常有序生产,值得推广。     

提高混匀矿质量实践

针对邯钢原料来源比较杂、矿点多、含铁原料品质参差不齐、SiO2含量和TFe波动大,且粉矿粒度不均一的问题。通过细化配料管理,推行TFe、SiO2推移图以及采用分阶段变流量堆料工艺,降低了二次料场堆料粒度偏析、原料湿度不同对混匀矿质量的影响,提高了配料精度和原料混匀效果,为烧结生产提供了成分稳定的烧结混匀料。     

包钢稀土钢炼铁厂混匀堆料作业方式的研究

文章以影响混匀矿混匀效率的因素出发,对单种矿的粒度组成和化学成分、混匀矿的堆料层数优化、BLOCK堆料模式、分阶段变流量以及堆料机的行走速度控制等方面进行了系统研究。在实用性、经济性、可操作性等方面加以论述,提出了适合不同单种铁料的堆料作业方式,为进一步改善混匀矿成分稳定率,降低成分偏析引起的烧结矿成分波动提供了现场生产数据。     

论从实践理解世界的物质性和自然世界的先在性

马克思主义唯物论是一种物本主义形态的唯物论,还是一种超越物本主义形态、从实践理解世界的本质相关问题的实践的唯物主义的唯物论?这是一个我们必须搞清楚的有关马克思主义唯物论的本质规定性和精神实质的重大问题.在考察物本主义的唯物论及其思维方式的局限性的基础上,揭示了马克思主义唯物论是现代的、实践的唯物主义,并重点研讨了马克思主义唯物论关于从实践理解世界的物质性和自然世界的先在性的原理,以期为马克思主义唯物论进一步阐明人类世界的实践性原理奠定基础.     

Effect of cyproheptadine on the ultrastructure of the neurons of the arcuate nucleus in the hypothalamus of the rat

The data are presented on changes in the rat arcuate nuclear neuron ultrastructure after using cyproheptadine (peritol, Egyt Pharmaceutical Works, Hungary) in a water suspension at a dose of 20 mg/kg once daily during 7 successive days and twice a day within 10 days. It was shown that cyproheptadine decreases the functional activity of the arcuate nuclear neurons, depending on the total amount of the drug used. Cyproheptadine-induced inhibition of the forming neurohormone release from neurons is likely to be one of the mechanisms of its therapeutic effect in Itsenko-Cushing's disease.     

Characteristics of the sympathetic innervation of the nictitating membrane and of the vasculature of the nose and tongue of the cat

Vasomotor responses from the nasal mucosa and tongue, and contractions of the nictitating membrane, were recorded on stimulation of the cervical sympathetic or internal carotid nerves. Preganglionic sympathetic nerve fibres which elicited a membrane response possessed a lower threshold than those which evoked nasal vasoconstriction, while the latter displayed a lower threshold than fibres which evoked tongue vasoconstriction. The sympathetic vasodilator fibres to the tongue whose activity was revealed after alpha-receptor blockade, had a similar threshold to the vasoconstrictor fibres. Membrane contraction, nasal vasoconstriction and occasionally tongue vasoconstriction could be evoked by stimulating the internal carotid nerve. The postganglionic fibres innervating the nasal mucosa had a similar threshold to those of the nictitating membrane, which may indicate that there are small myelinated fibres innervating the mucosa. The preganglionic compound nerve action potential had four major components, S1-S4. S1, S2 and usually S3 fibres were associated with membrane contraction; S2, S3 and sometimes S1 fibres were associated with nasal vasoconstriction; and S3, usually S2 and occasionally S1 fibres were associated with vasoconstriction in the tongue. It is concluded that each of these three groups of nerve fibres, but not S4 fibres, may include fibres associated functionally with the three effectors. There was a considerable difference between the relative amplitude of the responses of the three effectors elicited by stimulation of the cervical sympathetic nerve at frequencies between 0.2 and 2 Hz. Vasoconstrictor responses were relatively larger than membrane contractions suggesting differences in the mechanisms of neurotransmission at the neuroeffector junctions.