发明名称 |
D.C. arc furnace having electrically conductive hearth and method for making same |
摘要 |
A new method of making an electrically conductive hearth in a d.c. furnace is effected by first heating bricks such as magnesite-graphite bricks and the like, from their new commercially available form to high temperatures decresing the normal resistivity of the bricks and thereafter laying the bricks to form the hearth from top to bottom with the heat treated bricks.
|
申请公布号 |
US4853941(A) |
申请公布日期 |
1989.08.01 |
申请号 |
US19880168899 |
申请日期 |
1988.03.16 |
申请人 |
ASEA BROWN BOVERI AB |
发明人 |
RAPPINGER, BO;STENKVIST, SVEN-EINAR |
分类号 |
F27D11/10;C04B35/01;C21C5/52;F27B3/04;F27B3/08;F27B3/16;F27B14/06;F27D1/00;H05B7/06 |
主分类号 |
F27D11/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|