发明名称 |
Fluidized bed roasting process |
摘要 |
A method of stabilizing a fluidized bed in a fluidized bed roasting process for metal sulphide concentrate comprises the step of controlling the particle size distribution of the particulate material in the bed so that a minimum amount of no less than about 30% of the concentrate falls in a size range of from about 100 to about 420 microns. The minimum amount preferably falls in the range of from about 35% to about 40%. In one embodiment of the invention the particle size distribution is controlled by maintaining the amount of lead in the concentrate in a range from about 3% to about 4%, preferably 3.7% to about 3.8%. In another embodiment the particle size distribution is controlled by using a pelletized feed or by the combination of the steps of using a pelletized feed and regulating the lead content of the concentrate. |
申请公布号 |
ZA9701538(B) |
申请公布日期 |
1998.08.21 |
申请号 |
ZA19970001538 |
申请日期 |
1997.02.21 |
申请人 |
COMINCO LTD. |
发明人 |
MURRAY J. BROWN;DAVID W. GOOSEN |
分类号 |
C22B1/10;C22B1/24;C22B19/02 |
主分类号 |
C22B1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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