2 research outputs found
Analisis Pengaruh Waktu Penyaringan Endapan Bertahap terhadap Hasil Netralisasi Larutan Leaching Ferronickel Menggunakan Aditif CaCO3 untuk Sintesis NiSO4.6H2O
No full textBerkembangnya industri electric vehicle di Indonesia, menyebabkan kebutuhan baterai sebagai salah satu komponen utama electric vehicle meningkat. Baterai NMC (Nickel Manganese Cobalt) merupakan salah satu jenis baterai yang digunakan untuk electric vehicle. Dalam pembuatan baterai NMC, nikel yang digunakan bukan berupa logam Ni, melainkan berupa senyawa Nickel (II) Sulphate Hexahydrate (NiSO4.6H2O). Jumlah bijih laterit yang melimpah di Indonesia dapat diolah untuk menghasilkan NiSO4.6H2O. Penelitian ini bertujuan untuk menganilisis pengaruh variasi selisih waktu penyaringan endapan hasil netralisasi. Bahan yang digunakan adalah ferronickel hasil smelting dari mini blast furnace. Proses leaching pada ferronickel mengggunakan larutan H2SO4 2M sebanyak 120 ml, dilakukan pada temperatur 90 °C selama 6 jam dengan kecepatan pengadukan sebesar 200 rpm. Selanjutnya dilakukan proses netralisasi dengan menggunakan larutan CaCO3 sampai pH 3,01 pada temperatur 90 °C. Setelah dicapai pH 3,01, larutan hasil leaching ditahan pada temperatu 90 °C selama 24 jam dan dilakukan penyaringan endapan bertahap yang terbentuk dengan variasi 2 jam, 4 jam, 6 jam, dan 8 jam. Setelah itu, dilakukan proses kristalisasi untuk menghasilkan senyawa NiSO4.6H2O. Hasil kristalisasi selanjutnya dicuci dan dikeringkan. Hasil kristalisasi terbaik diperoleh pada variasi penyaringan endapan bertahap pada setiap 8 jam dengan kandungan Ni 50,23%, recovery 107,289%, dan separation efficiency Ni 90,5%.
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The development of the electric vehicle industry in
Indonesia has caused the need for batteries as one of the main
components of electric vehicles to increase. NMC (Nickel
Manganese Cobalt) battery is one type of battery used for electric
vehicles. In making the NMC batteries, nickel is used instead of a
metal such as Ni, but in the form of compounds Nickel (II) Sulphate
Hexahydrate (NISO4.6H2O). The abundant amount of laterite ore
in Indonesia can be processed to produce NiSO4.6H2O. This study
aims to analyze the effect of time of staged filtering sludge on
neutralization filtrate. The material used is ferronickel resulting
from smelting from a mini blast furnace. The leaching process was
carried out using 120 mL of 2M H2SO4 solution at 90 °C for 6 hours
with a stirring speed of 200 rpm, followed by a neutralization
process using CaCO3 powder to pH 3.01 at 90 °C. After reaching
a pH of 3.01, the leached solution was held at a temperature of 90
°C for 24 hours and a staged filtering of the precipitate formed with
variations of 2 hours, 4 hours, 6 hours, and 8 hours was carried
out. The best results were obtained in the variation of staged
filtering at filtering every 8 hours with content of Ni 50,299%,
recovery 107,289%, and separation efficiency of Ni 90,5
Effect of Time Stepping in the Filtering Process on the Synthesis of Nickel Sulfate Powder from Blast Furnace Ferronickel
Get PDFThe demand for nickel manganese cobalt (NMC)-type batteries is increasing along with the need for global electric vehicles, such as electric cars. Nickel used in the manufacture of NMC batteries is Nickel (II) sulfate hexahydrate (NiSO4.6H2O). Therefore, it is necessary to study how to synthesize nickel sulfate powder from blast furnace ferronickel to provide an alternative source of nickel sulfate and increase the added value of blast furnace ferronickel products. This study aims to analyze the effect of variations in the time difference of stepped filtering sludge on the precipitated filtrate. This study uses a nickel source from the ferronickel derived from the sintering and smelting process using a Mini Blast Furnace to synthesize nickel sulfate. First, the ferronickel was ground and sieved to pass 50 mesh size. Then, the leaching process was performed using a mixture of 120 mL H2SO4 (2M) and 30 mL H2O2 (30%) with a stirring speed of 200 rpm for 6 h for each 2 g ferronickel. Next, the precipitation process was carried out using CaCO3 powder to pH 3.01 at 90 °C. The precipitation solution was held at 90 °C for 24 h, and stepped filtering of the precipitate formed with variations of 2, 4, 6, and 8 h (the total time is kept the same, i.e., 24 h). The crystallization results were then washed and dried at 70 °C for 2 h. Based on X-Ray Fluorescence (XRF), the best results were obtained in stepped filtering variation every 8 h with 50.23% Ni content and 90.5% Ni separation efficiency. Based on XRD, the nickel sulfate powder product has the compound NiSO4.6H2O. In addition, nickel sulfate products also contain CoSO4, one of the compounds needed to manufacture NMC batteries. However, nickel sulfate powder products still contain impurity compounds like FeSO4 and CaSO4
