Ferronickel Slag Performance from Reclamation Area in Pomalaa, Southeast Sulawesi, Indonesia

• 作者: Arif Luqman Bieby Voijant Tangahu Dian Saptarini IDAA Warmadewanthi Lily Pudjiastuti Mas Agus Mardyanto Tardan
• 来源期刊: 化学工程与科学期刊(英文)
• 学科: 医学
• 关键词: EDX SEM FERRONICKEL SLAG XRD
• 年，卷（期）: 2015,（3）
• 页码范围: 408-412
• 页数: 5页
• 分类号: R73

摘要

This study aimed to assess the differences of characteristics between the new ferronickel slag generated from the production of nickel and the slag which had been used as a material reclamation. The Toxicity Characteristic Leaching Procedure (TCLP) test was conducted on ferronickel slag to determine the concentration of heavy metals leaching. Then, the tests of X-Ray Diffraction (XRD), Scanning Electron Microscopic (SEM) and Energy-Dispersive X-Ray Spectroscopy (EDX) are also conducted on the ferronickel slag samples. The results of TCLP test show that the new ferronickel slag samples contain Fe (158, 6775 ppm), Cr (0.64465 ppm), and Pb (0.0219 ppm), and that the ferronickel slag has been used as a reclamation material containing Fe (3.94 ppm) and Cr (2.91 ppm). The result of EDX test shows that the slag sample from the reclamation area contains higher Ni concentration than the new slag sample. Slag that has been used for reclamation contains high SiO2 and Mg2(SiO6). The XRD analysis result shows that the highest elements in the slag are Si and Mg with 18.94% and 15.83% respectively. The dominant mineral in the slag is forsterite (Mg 1.784 FeSiO4 0216) by 41% and the rest is magnesium silicate (Mg2(SiO6)).