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| Distribution Characteristic of Re during Molybdenum Concentrate Roasting in Multiple Hearth Furnace |
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Received:February 14, 2020
Revised:February 20, 2020
Accepted:February 21, 2020
Published Online:May 26, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.06.009 |
| KeyWord:rhenium; multiple hearth furnace; volatilization rate; spraying water; molybdenum concentrate |
| Author | Institution |
| Liu hongzhao |
中国地质科学院郑州矿产综合利用研究所 |
| WANG Hanfei |
金堆城钼业股份有限公司 |
| ZHANG Bo |
中国地质科学院郑州矿产综合利用研究所 |
| WANG Wei |
中国地质科学院郑州矿产综合利用研究所 |
| CAO Yaohua |
中国地质科学院郑州矿产综合利用研究所 |
| LIU Lin |
中国地质科学院郑州矿产综合利用研究所 |
| WANG Hongliang |
中国地质科学院郑州矿产综合利用研究所 |
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| Abstract: |
| Distribution characteristic of Re in roasted product, dust and spraying water was studied applying multiple hearth furnace roasting system as research object. The key factors affecting Re volatilization rate and ratio of Re dissolving into spraying water were analyzed. The results show that Re volatilization rate during roasting is 62.4% and ratio of Re dissolving into spaying water is 35.3% when the product is used to prepare ferromolybdenum. Re volatilization rate during roasting is 83.6% when the product is high solubility molybdenum trioxide. Analysis shows that oxidation degree of roasting product is the key factor affecting Re volatilization rate. Comparing with rotary kiln roasting system, higher operating temperatures of cloth dust collecting in multiple hearth furnace system bring higher dissolving ratio of Re in spraying water. |
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