|
| Study on Reduction of Magnetite in Copper Smelting Slag by Injecting Biodiesel from Waste Cooking Oil and Petroleum Diesel |
|
Received:April 19, 2016
Revised:April 21, 2016
Accepted:April 25, 2016
Published Online:September 20, 2016
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2016.10.002 |
| KeyWord:waste cooking oil; biodiesel; copper smelting slag; magnetite; dilution; high-temperature pyrolysis |
| Author | Institution |
| Li Jianwu |
昆工 |
| Li Bo |
昆工 |
| MA Bao-zhong |
北京矿冶研究总院 |
|
| Hits: 1821 |
| Download times: 1992 |
| Abstract: |
| Characteristics of magnetite reduction in copper smelting slag by biodiesel from waste cooking oil and petroleum diesel were studied. Distribution of high-temperature pyrolysis product from biodiesel and diesel was investigated to elaborate process of magnetite reduction in copper smelting slag by diesel and biodiesel. The results indicate that magnetite content drops while fayalite content rises after reduction. In process of copper smelting slag reduction, liquid reduction agents first crack into coke, H2, CO and CH4, et al, and fayalite phase is formed by combining SiO2 in copper molten slag and FeO reducted from magnetite by pyrolysis products. Reduction effect of magnetite with biodiesel is better than that of diesel due to production of more reducing gases through pyrolysis. It is feasible to substitute biodiesel to diesel as reductant in process of copper smelting slag reduction in electric furnace. |
| Close |