Nickel leaching from laterite ores by combination of organic and sulfuric acid

2021 ◽  
Author(s):  
F. E. Yunita ◽  
M. Z. Mubarok
Keyword(s):  
Sulfuric Acid ◽  
Laterite Ores ◽  
Nickel Leaching

scholarly journals Pengaruh Karakteristik Bijih pada Ekstraksi Nikel dari Bijih Limonit Indonesia menggunakan Pelindian Atmosferik

2021 ◽  
Vol 43 (1) ◽  
pp. 9
Author(s):  
Widi Astuti ◽  
Fika Rofiek Mufakhir ◽  
Fajar Nurjaman ◽  
Slamet Sumardi ◽  
Ulin Herlina ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Electric Vehicle ◽  
Experimental Results ◽  
Low Grade ◽  
Battery Electric Vehicle ◽  
Nickel Laterite ◽  
Nickel Extraction ◽  
Extraction Percentage ◽  
Laterite Ores ◽  
Nickel Leaching

AbstrakKebutuhan ekstraksi nikel dari bijih nikel laterit khususnya jenis bijih limonit dengan kadar nikel yang rendah sangat diperlukan karena kebutuhan nikel yang terus meningkat dengan adanya pengembangan kendaraan bermotor listrik berbasis baterai. Jenis dan karakteristik bijih laterit yang berbeda akan memberikan pengaruh pada hasil ekstraksi nikel. Pada penelitian ini dilakukan ekstraksi nikel dari bijih laterit jenis limonit yang berasal dari Pulau Halmahera (LH)) dan Pulau Sulawesi (LS) menggunakan pelindian atmosferik. Asam sulfat digunakan sebagai agen pelindian. Penelitian dilakukan untuk mengetahui pengaruh karakteristik bijih limonit (LH dan LS) pada berbagai variabel pelindian yaitu suhu (30oC, 50oC dan 80oC), konsentrasi asam sulfat (0,5M; 1M; dan 2M), waktu pelindian (15, 30, 60, 120, dan 240 menit), serta rasio bijih terhadap reagen pelindian (5, 10, dan 20% w/v) terhadap ekstraksi nikel dari bijih limonit. Hasil penelitian menunjukkan bahwa karakteristik bijih laterit sangat berpengaruh pada hasil pelindian dan persen rekoveri nikel. Nikel dari bijih LH yaitu jenis limonit dari Pulau Halmahera dapat diekstrak secara maksimal (100%) pada konsentrasi asam sulfat 0,5M, suhu 80oC, rasio bijih/larutan asam sulfat 10%, dan waktu pelindian 2 jam. Sedangkan persen ekstraksi nikel dari bijih LS yang terbesar adalah 95% yang diperoleh pada konsentrasi asam sulfat 2M, suhu 80oC, rasio bijih/larutan asam sulfat 5%, dan waktu pelindian 4 jam. AbstractNickel extraction from nickel laterite ores particularly low-grade limonite ore is needed along with the increase of nickel consumption on the development of battery electric vehicle. Types and characteristics of nickel laterite ores affect greatly on the nickel extraction from these ores. This research conducted the extraction of nickel from limonite ore from different areas i.e. Halmahera Island (LH) and Sulawesi Island (LS) using atmosferic leaching. Sulfuric acid (1M) was used as leaching reagent. Leaching processes were carried out for investigating the effects of limonite ore characteristics (LH and LS), leaching temperatures (30oC, 50oC dan 80oC), concentration of sulfuric acid (0.5M; 1M; 2M), leaching time (15, 30, 60, 120, and 240 minutes), and ratio of ore amount to volume of leaching reagent on the nickel extraction from limonite ores. Experimental results showed that ore characteristic affected greatly on the leaching result and nickel leaching recovery. Nickel from LH ore could be extracted maximum (100%) using sulfuric acid 0.5M, temperature of 80oC, and leaching time 120 minutes (2 hours). Whereas, the highest nickel extraction percentage from LS ore is 95% using sulfuric acid 2M, temperature of 80oC, and leaching time 240 minutes (4 hours).

scholarly journals Selective Nickel Leaching from Nickel and Cobalt Mixed Sulfide Using Sulfuric Acid

2017 ◽  
Vol 81 (6) ◽  
pp. 320-326
Author(s):  
Hiroshi Kobayashi ◽  
Hirofumi Shoji ◽  
Satoshi Asano ◽  
Masaki Imamura
Keyword(s):  
Sulfuric Acid ◽  
Nickel Leaching ◽  
Mixed Sulfide

The Modeling and Control of Leaching Rate in Nickel Stir Leaching Process of Sulfuric Acid

2012 ◽  
Vol 485 ◽  
pp. 165-168
Author(s):  
Qiang Li ◽  
Cheng Zhi Yang ◽  
Wen Bo Zhang ◽  
Yang Yu
Keyword(s):  
Computer Simulation ◽  
Sulfuric Acid ◽  
Predictive Control ◽  
Pid Control ◽  
Rate Control ◽  
Leaching Rate ◽  
Modeling And Control ◽  
Leaching Process ◽  
And Control ◽  
Nickel Leaching

Leaching rate is one of the key parameters in the nickel stir leaching process of sulfuric acid and it is hard to online measure directly due to a lot of uncertain facts. In this paper, the prediction model of nickel leaching rate is established by least squares identification method. A controller combining predictive control(PFC) and PID control is designed to control nickel leaching rate in stir leaching process of sulfuric acid and better results of leaching rate control is proved by computer simulation.

scholarly journals Study of Nickel Leaching Using Sulfuric Acid and Phosphoric Acid on The Selectivity Nickel Ore

2021 ◽  
Vol 16 (3) ◽  
pp. 393
Author(s):  
Syamsul Hidayat ◽  
Sri Yulianti ◽  
Dian Anggreini ◽  
Syamsul Bahtiar
Keyword(s):  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Nickel Content ◽  
Operating Time ◽  
Solution Concentration ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Low Grade ◽  
Atmospheric Conditions ◽  
Nickel Leaching

Study of nickel leaching using sulfuric acid and phosphoric acid on the selectivity of low-grade laterite nickel ore under atmospheric conditions has been successfully carried out. In this study, the laterite nickel leaching process was carried out by varying the solution concentration and operating time. The concentrations of sulfuric acid and phosphoric acid solutions were varied at 5 M and 6 M concentrations, while the operating time was varied at 4 hours and 6 hours. For other operating conditions, it is kept constant with an operating temperature of 90 ℃, pulp density 15% w / v, particle size ≤ 200 mesh. After that, the analysis stage was carried out using an atomic absorption spectroscopy (AAS) tool to determine the nickel content in the sample. The results showed that the highest nickel recovery was obtained at the concentration of 5 M sulfuric acid solution of 2.60% and 5 M phosphoric acid of 2.59% with the optimum operating time at 4 hours of operating time.

High-Temperature Sulfuric Acid Leaching of Laterite Ores

2011 ◽  
pp. 123-134 ◽  
Author(s):  
Frank K. Crundwell ◽  
Michael S. Moats ◽  
Venkoba Ramachandran ◽  
Timothy G. Robinson ◽  
William G. Davenport
Keyword(s):  
Sulfuric Acid ◽  
High Temperature ◽  
Acid Leaching ◽  
Sulfuric Acid Leaching ◽  
Laterite Ores

Effect of activation pretreatment of limonitic laterite ores using sodium fluoride and sulfuric acid on water leaching of nickel and cobalt

2017 ◽  
Vol 169 ◽  
pp. 411-417 ◽  
Author(s):  
Baozhong Ma ◽  
Weijiao Yang ◽  
Yanlin Pei ◽  
Chengyan Wang ◽  
Bingjie Jin
Keyword(s):  
Sulfuric Acid ◽  
Sodium Fluoride ◽  
Water Leaching ◽  
Laterite Ores

scholarly journals Selective Nickel Leaching from Nickel and Cobalt Mixed Sulfide Using Sulfuric Acid

2018 ◽  
Vol 59 (9) ◽  
pp. 1458-1464 ◽  
Author(s):  
Hiroshi Kobayashi ◽  
Hirofumi Shoji ◽  
Satoshi Asano ◽  
Masaki Imamura
Keyword(s):  
Sulfuric Acid ◽  
Nickel Leaching ◽  
Mixed Sulfide

Kinetics of nickel leaching from roasting-dissolving residue of spent catalyst with sulfuric acid

2009 ◽  
Vol 16 (3) ◽  
pp. 410-415 ◽  
Author(s):  
Qi-ming Feng ◽  
Yan-hai Shao ◽  
Le-ming Ou ◽  
Guo-fan Zhang ◽  
Yi-ping Lu
Keyword(s):  
Sulfuric Acid ◽  
Spent Catalyst ◽  
Nickel Leaching ◽  
Kinetics Of
Sign in / Sign up

Export Citation Format

Share Document