Effect of Fe/SiO2 and CaO/SiO2 mass ratios on metal recovery rate and metal content in slag in oxygen-enriched direct smelting of jamesonite concentrate
| Autor: | Zhong-tang Zhang, Xi Dai |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Alloy Intermetallic chemistry.chemical_element 02 engineering and technology Zinc engineering.material 01 natural sciences Microanalysis Metal 0103 physical sciences Materials Chemistry 010302 applied physics Metallurgy Metals and Alloys Slag 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics chemistry visual_art Smelting visual_art.visual_art_medium engineering Fayalite 0210 nano-technology |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 30:501-508 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(20)65230-x |
| Popis: | The oxygen-enriched direct smelting of jamesonite concentrate was carried out at 1250 °C by changing the slag composition. The effects of Fe/SiO2 and CaO/SiO2 mass ratios on the metal recovery rate as well as metal content in slag were investigated. Experimental results indicated that the metal (Pb+Sb) recovery rate was up to 88.30%, and metal (Pb+Sb) content in slag was below 1 wt.% under the condition of slag composition of 21−22 wt.% Fe, 19−20 wt.% SiO2 and 17−18 wt.% CaO with Fe/SiO2 mass ratio of 1.1:1 and CaO/SiO2 mass ratio of 0.9:1. The microanalysis of the alloy and slag demonstrated that the main phases in the alloy contained metallic Pb, metallic Sb and a small amount of Cu2Sb and FeSb2 intermetallic compounds. The slag was mainly composed of kirschsteinite and fayalite. Zinc in the raw material was mainly oxidized into the slag phase in the form of zinc oxide. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect