共查询到20条相似文献,搜索用时 703 毫秒
1.
本文叙述了国内先进的煤气净化工艺和氨、硫回收装置,净化了焦炉煤气,减少了环境污染,改善了硫铵质量,增加了硫磺新产品,提高了生产管理水平,确保了安全生产。 相似文献
2.
介绍了炭素焙烧炉燃烧系统的改造,新型控制系统的功能介绍、使用效果和效益分析,通过改造真正实现了清洁生产,达到了节能效果,改善了工艺水平,提高了产品质量,降低了生产成本,提高了生产效率,改善了工作环境。 相似文献
3.
分析了20 t桥式抓斗起重吊车常见故障及原因,采取了相应的解决措施,从根本上杜绝了吊车的常见故障、节约了备件、降低了生产成本、减轻了维修人员劳动强度及提高了企业的经济效益. 相似文献
4.
5.
通过对烧结配料生石灰消化除尘系统进行改造,提高了除尘效果,同时稳定了生石灰配加量和消化打水量;充分回收利用了消化蒸汽和二次扬尘,减少了资源浪费,提高了消化水温,进一步强化了生石灰消化作用,提高了混合料制粒效果和混合料料温;极大地改善了配料室工作环境,有效降低了检修劳动强度,提高了设备作业率。 相似文献
6.
孙秀显 《冶金设备管理与维修》1998,(6):28-29
通过大量的调查研究,查清了电磁站内渗漏水的缺陷,提出了解决方案和具体操作方法,改变了原定的搬迁方案,不仅彻底地消除了缺陷,还节约了大修费,缩短了工期,为生产创了可观的效益。 相似文献
7.
8.
9.
10.
安钢250/300轧钢机组加热炉一次性水冷却改为软水闭路循环水冷却系统,保证了政党生产,节约了水资源,减少了外打破常规水量,保护了生态环境,同时降低了加热炉的故障率,减少了维修费用,提高了经济效益。 相似文献
11.
12.
13.
The muscle bundles of the diaphragm form a curved sheet that extends from the chest wall to the central tendon. Each muscle bundle exerts a force in the direction of its curvature; the magnitude of this force is proportional to the curvature of the bundle. The contribution of this force to transdiaphragmatic pressure is maximal if the direction of bundle curvature is orthogonal to the surface and the curvature is maximal. That is, the contribution of muscle tension to transdiaphragmatic pressure is maximal if the muscle bundles lie along lines that are both geodesics and lines of maximal principal curvature of the surface. A theory of diaphragm shape is developed from the assumption that all muscle bundles have these optimal properties. The class of surfaces that are formed of line elements that are both geodescis and lines of principal curvature is described. This class is restricted. The lines that form the surface must lie in planes, and all lines must have the same shape. In addition, the orientation of the lines is restricted. An example of this class that is similar to the shape of the canine diaphragm is described, and the stress distribution in this example is analyzed. 相似文献
14.
金堆城钼业公司选矿工艺现状分析 总被引:1,自引:0,他引:1
分析了金堆城钼业公司钼浮选工艺现状,提出了优化工艺的对策及措施。指出粗选回收率低的主要原因,一是磨矿粒度较粗,二是分级机效率低,产生过磨;精选回收率低的主要原因是旋流器分级效果差及工艺设备落后。强调铜钼分离作业是精选工艺降铜排泥的关键环节。同时指出加强生产管理,强化分级效果,完善工艺,改造设备是提高选矿技术经济指标的根本途径。 相似文献
15.
板塘花岗岩矿位于广东河源,是以花岗岩为主的非金属矿床。矿体产于罗浮-龙川岩体,呈岩基产出,岩性主要为黑云母花岗岩。矿体形态简单,分布均匀、连续、完整,厚度比较稳定。根据矿体产出特点,初步认为矿床成因类型属于S型花岗岩。 相似文献
16.
高校档案服务创新的必要性及实施路径研究 总被引:2,自引:0,他引:2
档案的价值和意义是通过为社会服务而实现的,高校档案工作的服务性,是高校档案馆赖以生存和发展的基础。创新高校档案服务机制是信息社会发展的必然要求,是高等教育改革的必然要求,是高校档案馆自身发展的必然要求。要实现高校档案服务创新,一是要建立现代化的管理方式、服务手段和服务方式;二是拓展档案信息的校内服务功能;三是凝练一支整体素质过硬的档案工作团队;四是加强学校服务和社会服务功能逐步渗透。 相似文献
17.
对南钢转炉厂生产DF钢中的夹杂物进行了研究,结果表明现有工艺制度下吹氩精炼效果不明显,氩后钢中的夹杂物含量为865.78mg/kg;大于300μm的夹杂物,主要成分为Si—Al,或Si—Al—Mn;80~300μm夹杂物,主要成分为Si—Al-Mn,且Si较高,Mn较低;小于80μm的夹杂物,主要成分为Si—Al—Mn,并且含Mn较高:改变钢液脱氧制度及控制吹氩搅拌,可使氩后钢中及铸坯中的夹杂物含量分别降低到203.38mg/kg、59.8mg/kg。 相似文献
18.
《Baosteel Technical Research》2010,(Z1):112
The entire roller inlayed block intelligence cold strip shape meter is developed successfully in this paper,which can stably work chronically in the cold rolling workshop,the independent innovation of the key technology of cold strip shape measuring,the foreign technical monopoly and blockade are broken through.The structural form which is different from the international popular segmented detection roller is put forward,the entire detection roller inlayed block is developed,a group of elastic blocks in that the sense organs are installed are inlayed in the radial symmetry rectangular grooves of the detection roller body,the entire roller structure is composed of elastic pieces and the roller body,the scratch of the strip surface due to different thermal expansion of the traditional detection roller measuring unit is avoided effectively.The signal transmission form which is different form the international popular dry slip ring is put forward,the spray wet slip ring is developed,slip ring and detection roller can be taken down and installed as possibly as fast,so the maintain is convenient,while through the section auto-spray cleaning,lubrication and cooling, the service life is remarkable improved and the outside interference signal is reduced.The signal processing form which is different form the international popular gathering card is put forward,the embedded DSP shape signal processing hardware system is developed,the electromagnet,temperature,humidity and vibration’s interference of industry practice to shape transmission signal can be effectively avoided,which can guarantee the instantaneity and measured precision of shape measured signal.The shape signal processing software system whose function contains error compensation,pattern recognition,establishment of the target shape and the closed-loop control calculation is built,the shape meter’ computer human interaction is friendly,and function of shape meter is strong,at the same time the intellectualized level of the shape meter is improved.Now,this shape meter has been successfully applied on the 1 250 mm cold strip mill of Angang Steel Company Limited,the long-term operating testing is done,every guide line achieves the anticipative effect,the measuring precision is high and the measuring signal is stable and reliable,the shape meter is tested on high speed,big tension,changed wrap angle and big depressed complicated working conditions,any scratch of the detection roller surface and the strip surface is not appearing,it can completely adapt well to the industrial production environment,reaching the international advanced level. 相似文献
19.
转炉冶炼不正常时 ,需加硅铁调整碳温关系 ,由于硅铁合金价格贵 ,造成成本增加 ,研究一种新材料——碳化硅球作为提温剂。试验证明 ,采用该种碳化硅球 ,可以缓解钢液降碳速度 ,延长吹炼时间 ,对保钢种及降低成本都有好处 相似文献
20.
研究了00Cr40Ni55Al3Ti轴承合金固溶态和时效态的组织特征及硬度变化规律。结果表明:随着固溶温度的升高,α-Cr相析出数量呈下降趋势,在1 200℃时α-Cr相尺寸最小,面积分数仅为8.45%;高于1 200℃时,α-Cr相尺寸逐渐增大,数量减少。固溶处理后冷却速度越快,α-Cr相析出数量越少,硬度降低;固溶温度在1 190~1 210℃之间以138℃/s进行冷却,经600℃×6 h时效处理后,硬度超过59.7HRC,合金微观组织主要由球状α-Cr相和均匀片层组织及弥散分布其中的纳米级γ′相组成,硬度较为均匀。1 200℃固溶处理以138℃/s进行冷却,经550℃保温6 h后,00Cr40Ni55Al3Ti合金显微组织为球状α-Cr相、片层组织和非片层组织,非片层组织面积分数约为32.21%,片层组织硬度达703HV,非片层组织硬度为249HV;当时效温度为600和650℃时,时效时间在5~7 h范围内,显微组织为均匀分布的片层组织和球状α-Cr相,硬度为676HV^712HV。00Cr40Ni55Al3Ti轴承合金在1 190~1 210℃之间进行固溶处理后快速冷却(冷却速度大于138℃/s),经600℃时效处理6 h后,洛氏硬度可达到60HRC以上。 相似文献