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首页> 外文会议>International Tropical Renewable Energy Conference >The effect of temperature and leaching time of sulfuric acid on increasing nickel and iron content from ferronickel slag waste after alkaline fusion using sodium carbonate
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The effect of temperature and leaching time of sulfuric acid on increasing nickel and iron content from ferronickel slag waste after alkaline fusion using sodium carbonate

机译：碳酸钠碱性融合后硫酸温度和浸出时间对碳酸氢盐渣中镍渣中镍和铁含量的影响

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Ferronickel slag is a by-product of nickel ore smelting that is categorized as hazardous and toxic waste to the environment that still contains valuable minerals such as nickel, iron, cobalt, and some rare earth elements. Further research is needed to become the solution of the environmental issues that this slag had caused and to find an alternative solution to the decrease in the world's minerals supply by re-using ferronickel slag. In this research, the ferronickel slag is first given alkaline fusion to create microcracks and to bind silica on the slag by mixing it with sodium carbonate and roast them at 1000°C and hold it for 60 min. Then followed by hot water leaching to separate silica from the slag at 100°C for 60 min. Next, the slag is leached by using 1,5 M sulfuric acid with the various temperature at room temperature, 50°C, 60°C, and 70°C with the various time that is 15, 30, 60, 90, and 120 minutes to get the most effective condition to dissolve the nickel and iron. The most effective condition to dissolve nickel and iron is expected at 70°C leaching temperature and 120 minutes of leaching. The result of this experiment is characterized by ICP (Inductively Coupled Plasma) to know how much nickel and iron had dissolved to the solution. The result of this research is 70°C leaching temperature and 120 minutes of leaching is the best condition to make the highest % of nickel and iron extraction.
机译：Ferronickel Slag是镍矿石冶炼的副产品，该副产物被分类为仍然含有贵重矿物质如镍，铁，钴和一些稀土元素的危险和有毒废物。需要进一步的研究来成为这种渣打的环境问题的解决方案，并通过重新使用Ferronickel渣来找到世界矿物供应减少的替代解决方案。在该研究中，首先将氟镍渣制成碱性融合以产生微裂纹，并通过将其与碳酸钠混合并在1000℃下烘烤它们并将其保持60分钟，以将二氧化硅结合并结合二氧化硅。然后用热水浸出以将二氧化硅与炉渣分离在100℃下60分钟。接下来，通过在室温下的各种温度，50℃，60℃和70℃下使用1,5M硫酸，使用5,30,60,90和120的各个时间来浸出炉渣几分钟才能获得最有效的条件来溶解镍和铁。溶解镍和铁的最有效条件是在70°C的浸出温度和120分钟的浸出中。该实验的结果的特征在于ICP（电感耦合等离子体）来了解镍和铁溶解在溶液中。该研究的结果是70°C浸出温度，120分钟的浸出是使镍和铁提取的最高份的最佳条件。

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