共查询到20条相似文献,搜索用时 109 毫秒
1.
干法熄焦因具有节能减耗、保护环境和改善焦炭质量等特点,目前在国外得到了广泛应用。装入装置是干法熄焦中不可或缺的组成部分,其主要功能是开闭炉盖、并通过布料器将焦罐中的炽热焦炭均匀地导入干熄炉进行熄焦。介绍了装入装置在干熄焦中的应用情况。 相似文献
2.
4.
马钢2500m^3高炉降料面操作实践 总被引:1,自引:0,他引:1
马钢2500m^3高炉休风前准备充分,休风料装入合适,休风过程中对炉顶温度和炉顶齿轮箱的温度控制较好,结果料面安全顺利地降到了风口中心线以下。 相似文献
5.
6.
7.
8.
9.
烧结混合机圆筒粘料是各企业普遍存在的问题。承钢结合自身原料特点,通过在圆筒混合机进口端加装陶瓷衬板,安装在线清料装置,改进打水方式等措施,很好地抑制了圆筒混合机粘料问题,减轻了工人的劳动强度,提高了生产效率。 相似文献
10.
本文对长相铝公司焙烧窑冷却机在运行过程中,主风管支撑装置存在的问题进行了全面分析;介绍了改造后新支撑装置的结构特点及使用效果 。 相似文献
11.
12.
The authors report the principles of investigating photosensitivity of the skin: objects of testing and some basic practical consideration (doses, laws of irradiance, choice of wavelength in a test). Artificial sources for irradiation are studied. Xenon arc lamp is the most suitable. Two main kinds of device are suitable for routine radiant energy measurement; the thermopile with linear spectral response and the photoelectric cells without linear relationship between wavelength and sensitivity. To delimit the emission of xenon arc, the authors use absorption filters (cut-off type). Irradiation monochromator is indispensable to much dermatological photobiology, especially action spectrum study. Methods of measurement, time course of the response dose response relationship, threshold response and action spectrum of normal and abnormal effects of light on the skin are described. Routine phototesting procedure enclose: minimal erythemal dose, phototest, photopatchtest. Technical study and interpretation are exposed. For the dermatologist, phototesting procedure is necessary for the diagnosis. Mechanism of photosensitivity (phototoxic or photoallergic reaction) and wavelength dependence have to be known for an appropriate treatment. 相似文献
13.
14.
核子秤是非接触式计量器,除计量精度不如电子秤外,其余各项性能均优于电子秤。简述了核子秤的物理依据,给出了核子秤的计量数学模型,介绍了武钢焦化公司核子秤配料系统的组成及特点,着重分析了计量程序和配料程序,公开了该系统的核心控制算法,总结了该系统的得失。 相似文献
15.
16.
为解决圆筒混合机粘料问题,本厂开发了一种新型清料装置,其形式为类似刺猬的旋转辊子,悬挂于圆筒之中,利用其与粘料产生撞击、滚切、清刮,使圆筒筒壁上的粘料脱离,效果很好。 相似文献
17.
新型科位锁风阀──电动弧形阀是采用料位监测装置(即CTS-DFA型射频电容式物位限位开关)控制弧形阀板的卸料动作.保证了既不漏风又节能,而且便于自动控制. 相似文献
18.
Selective isolation of reversible cold sensitive variants from Chinese hamster ovary cell cultures 总被引:1,自引:0,他引:1
The fine structure and cellular associations of the large pigment cells (LPC's) of the compound eye of the house fly were studied with high voltage and conventional electron microscopy. Depending on the sector of the compound eye, the facets are either rectangular or hexagonal. The underside of each facet has indentations exactly aligned with those on top into which inserts an angulated sleeve of LPC's. Under the rectangular lens facet 6 or 8 small compact (in cross section) LPC's join four elongate LPC's. Clusters of compact cells alternate in this ring with elongate ones. Compact cells compress together and become quadrangular (in cross section) several microns below their insertion into the lens and form "building block" corners while elongate cells form "side rails" for the rectangular type of distal pseudocone enclosure. Beneath hexagonal facets all LPC's are rather elongate with out corner cells. In both facet types LPC's enclose the pseudocone for a longitudinal distance of 4 mum and then are displaced as bordering cells by a sleeve of two corneal pigment cells (CPC's), each of which encloses half of the proximal pseudocone. For the following 6 mum of longitudinal distance these concentric sleeves of CPC's and LPC's form a double layer around the pseudocone. At about 10 mum below lens base the two sleeves separate; LPC's become attenuated and extend cable-like to the basement membrane and CPC's enclose the proximal pseudocone, Semper cells and distal retinula. The junction between lens and LPC's has critical structural value in that (1) this is the sole anchorage to the lens by the lengthy remainder of the ommatidium, and (2) LPC's enclose the semiliquid pseudocone in the most distal portion of the pseudocone. In addition to vertical support, the LPC's send out numerous lateral processes that make structural contact among themselves, with the corneal pigment cells and the photoreceptor cells. The structural features of this array are discussed relative to possible physiological roles. 相似文献
19.
20.
普宗祥 《有色冶金设计与研究》2013,(6):29-31
结合缅甸达贡山镍矿项目的工程实例,介绍了干燥窑的主要结构组成及窑头罩、窑尾罩、筒体、支撑装置、驱动装置、传动装置、液压润滑装置等主要部件的设计要点,并着重阐述了干燥窑筒体内壁上扬料板的设计,以及采用ADI材料及现代化加工制造方法分段制造大齿圈的优点。 相似文献