升温速率对铝用炭阳极焙烧过程中裂纹形成的影响  

Effect of heating rate on the crack formation of carbon anodes during baking used in aluminum industry

作　　者：刘民章 

机构地区：[1]青海桥头铝电股份有限公司技术中心,青海西宁810100

出　　处：《炭素技术》2016年第1期45-49,共5页Carbon Techniques

摘　　要：研究了不同升温速率下工业生阳极试样在焙烧过程中裂纹的形成。通过测量阳极试样在焙烧前后的一些物理性能(电阻率、密度),评价阳极试样的最终质量。另外,为了确定焙烧后的开裂程度,使用了超声波和扫描电子显微镜技术。The quality of carbon anodes used in aluminum industry depends on the raw material properties and the manufacturing process parameters.It is one of the key factors directly related to the aluminum production cost.The degradation in anode quality such as crack formation increases the energy consumption,the environmental emissions,and the smelter＇s overall operating cost.The objective of this work is to investigate the formation of cracks in several industrial green anode samples during baking at different heating rates and to determine the influence of this baking parameter on the crack formation.The samples were characterized before and after baking by measuring a number of physical properties（electrical resistivity,density,etc.） which define the final quality of the anode samples.Also,techniques based on ultra-sound and scanning electron microscopy were used to determine the extent of cracking after baking.

关 键 词：炭阳极 裂纹 升温速率 焙烧 

分 类 号：TQ127.11[化学工程—无机化工]