Title:
【発明の名称】自熔炉の操業方法
Document Type and Number:
Japanese Patent JP3024266
Kind Code:
B2
Abstract:
PURPOSE:To promote settlement of matte particles suspended in slag and to reduce loss of copper by spreading a part of the matte discharged from a flash smelting furnace on the slag surface from a charging hole. CONSTITUTION:Charging holes 18 for molten matte are arranged at a settler part and a roof in a slag smelting furnace in suitable intervals. The molten matte stored in a holding furnace 20 is continuously taken out by each constant quantity and distributed into each molten matte charging hole 18 through a trough 19 and charged into the flash smelting furnace 1. The molten matte charging holes 18 are set almost in the right angle direction to flowing direction of the slag, and the charged molten matte 21 is dispersed to the whole furnace width direction of the slag in the furnace 1. The molten matte 21 is dropped on the slag by gravity to stir the slag and becomes comparatively large matte particles and is dispersed in the slag. The matte particles are quickly settled, and while sticking the fine matte particles existing in the slag, these are made bulky, and settled to matte layer below the slag layer. By this method, the loss of copper into the slag can be reduced.
Inventors:
Yoshiaki Mori
Koji Tsuzuki
Yasuhiro Tsugita
Koji Tsuzuki
Yasuhiro Tsugita
Application Number:
JP13169091A
Publication Date:
March 21, 2000
Filing Date:
May 08, 1991
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B7/04; C22B15/00; C22B23/02; (IPC1-7): C22B15/00; C22B7/04; C22B23/02
Domestic Patent References:
| JP63199829A | ||||
| JP6137929A |
Attorney, Agent or Firm:
Asao Kamoda (1 person outside)