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| 含硫砷金矿一段焙烧脱除硫和砷的热力学研究 |
| Thermodynamic Analysis for Removing Sulfur and Arsenic from a Gold Ore by One-stage Oxidative Roasting |
| 投稿时间：2016-08-30 |
| DOI： |
| 中文关键词: 有色金属冶金 含硫砷金矿 一段焙烧 硫、砷的脱除 热力学 |
| 英文关键词: nonferrous metallurgy sulfur and arsenic-bearing gold ore one-stage oxidative roasting removal of sulfur and arsenic thermodynamics |
| 基金项目:国家自然科学基金(No.51574284)、国家青年自然科学基金(No.51504293)、云南省校科技合作项目(No.2013IB020)。 |
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| 中文摘要: |
| 采用热力学软件FactSage7.0研究了某含硫砷金矿焙烧的热力学行为，探索一段焙烧脱除硫和砷的可行性。模拟结果表明，在较窄的氧含量范围内，可在较宽温度范围内实现硫、砷的一段焙烧脱除；氧含量过高时，改变焙烧温度不能实现硫和砷的同时脱除；通过添加适量的碳、或通入一氧化碳，可还原硫酸盐和砷酸盐，提高硫和砷的一段焙烧脱除率。 |
| 英文摘要: |
| The thermodynamic behavior of roasting a sulfur and arsenic-bearing gold ore was simulated by the thermodynamic software FactSage7.0, and the feasibility of removing sulfur and arsenic via one-stage oxidative roasting was explored. The simulation results demonstrate that under an appropriate content of oxygen the simultaneous removal of sulfur and arsenic can be achieved effectively at a relatively wide range of roasting temperature. However, when excessive oxygen is present, it is thermodynamically impossible to eliminate both elements simultaneously and effectively only by adjusting the roasting temperature. Adding carbon or injecting carbon monoxide during roasting will facilitate the removal of sulfur and arsenic, because they will reduce sulfates and arsenates. |
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