EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR

<p align="justify">Nickel is a metal that is widely applied in the metal industry. The nickel ore is divided into two types, lateritic and sulphide. Indonesia is the third country to have the largest nickel reserves in the world. Indonesia's nickel ore reserves are dominated by...

Full description

Saved in:
Bibliographic Details
Main Author: MARTHEN KINDA - NIM: 23016024, MEIYER
Format: Theses
Language:Indonesia
Online Access:https://digilib.itb.ac.id/gdl/view/28844
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Institut Teknologi Bandung
Language: Indonesia
id id-itb.:28844
spelling id-itb.:288442018-09-18T10:16:51ZEKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR MARTHEN KINDA - NIM: 23016024, MEIYER Indonesia Theses INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/28844 <p align="justify">Nickel is a metal that is widely applied in the metal industry. The nickel ore is divided into two types, lateritic and sulphide. Indonesia is the third country to have the largest nickel reserves in the world. Indonesia's nickel ore reserves are dominated by laterite type. The laterite nickel is subdivided over two types of saprolite and limonite. Saprolite ore has a higher nickel content (1,8-3,0%) than limonite ore (0,8-1,5%). So the processing of saprolite nickel ore is more desirable than limonite nickel ore. One of the method used to process limonite nickel ore is extraction using SO2-air dissolved. <br /> <br /> <br /> The general objective of this research is to improve the nickel leaching process of limonite nickel by evaluating leaching method using SO2-air dissolved, and to modifing the initial treatment of ore using the alkali roasting. The variations used are acidity level of pH 1 and 3, alkali type for roasting (NaOH, Na2CO3, Na2SO4) and operating temperature at 55 and 80 oC. The extraction was carried out for 180 minutes and sampled at 15, 90, 120 and 180 minutes. The analysis was carried out by AAS method, mineralogy analysis using XRD, analysis, nickel result and selectivity. <br /> <br /> <br /> The results of the analysis stated that the pretreatment by alkali roasting can increase nickel recovery at the extraction stage. The addition of alkali Na2CO3, Na2SO4 and NaOH can extract nickel with the highest recovery at 23,99%; 28,15%; and 39.22%. The highest nickel recovery for pretreatment without alkali roasting is 14.80%. The optimum operating conditions for the highest extraction process are at pH 1 and temperature of 80oC. The highest nickel to iron selectivity was obtained for pretreatment without alkali addition at 24.946 at operating conditions pH 3 at 80oC and selectivity at 16.172 at operating conditions pH 3 at 55oC using adding Na2SO4.<p align="justify"> <br /> text
institution Institut Teknologi Bandung
building Institut Teknologi Bandung Library
continent Asia
country Indonesia
Indonesia
content_provider Institut Teknologi Bandung
collection Digital ITB
language Indonesia
description <p align="justify">Nickel is a metal that is widely applied in the metal industry. The nickel ore is divided into two types, lateritic and sulphide. Indonesia is the third country to have the largest nickel reserves in the world. Indonesia's nickel ore reserves are dominated by laterite type. The laterite nickel is subdivided over two types of saprolite and limonite. Saprolite ore has a higher nickel content (1,8-3,0%) than limonite ore (0,8-1,5%). So the processing of saprolite nickel ore is more desirable than limonite nickel ore. One of the method used to process limonite nickel ore is extraction using SO2-air dissolved. <br /> <br /> <br /> The general objective of this research is to improve the nickel leaching process of limonite nickel by evaluating leaching method using SO2-air dissolved, and to modifing the initial treatment of ore using the alkali roasting. The variations used are acidity level of pH 1 and 3, alkali type for roasting (NaOH, Na2CO3, Na2SO4) and operating temperature at 55 and 80 oC. The extraction was carried out for 180 minutes and sampled at 15, 90, 120 and 180 minutes. The analysis was carried out by AAS method, mineralogy analysis using XRD, analysis, nickel result and selectivity. <br /> <br /> <br /> The results of the analysis stated that the pretreatment by alkali roasting can increase nickel recovery at the extraction stage. The addition of alkali Na2CO3, Na2SO4 and NaOH can extract nickel with the highest recovery at 23,99%; 28,15%; and 39.22%. The highest nickel recovery for pretreatment without alkali roasting is 14.80%. The optimum operating conditions for the highest extraction process are at pH 1 and temperature of 80oC. The highest nickel to iron selectivity was obtained for pretreatment without alkali addition at 24.946 at operating conditions pH 3 at 80oC and selectivity at 16.172 at operating conditions pH 3 at 55oC using adding Na2SO4.<p align="justify"> <br />
format Theses
author MARTHEN KINDA - NIM: 23016024, MEIYER
spellingShingle MARTHEN KINDA - NIM: 23016024, MEIYER
EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR
author_facet MARTHEN KINDA - NIM: 23016024, MEIYER
author_sort MARTHEN KINDA - NIM: 23016024, MEIYER
title EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR
title_short EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR
title_full EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR
title_fullStr EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR
title_full_unstemmed EKSTRACTION OF NICKEL LIMONIT USING DISSOLVED GASEOUS SO2-AIR
title_sort ekstraction of nickel limonit using dissolved gaseous so2-air
url https://digilib.itb.ac.id/gdl/view/28844
_version_ 1821995193191104512