electrowinning manganese
DESCRIPTION
ELECTROWINNING MANGANESE. Created by: Veni Verlestari 071436 Teknik Metalurgi. OUTLINE. Pendahuluan Flowsheet Proses Elektrowining Mangan Fenomena Aplikasi Referensi. PENDAHULUAN. Bentuk mangan di alam pada umumnya : pyrolusit (MnO 2 ) - PowerPoint PPT PresentationTRANSCRIPT
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ELECTROWINNING MANGANESE
Created by:Veni Verlestari
071436Teknik Metalurgi
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OUTLINE1. Pendahuluan2. Flowsheet 3. Proses Elektrowining Mangan4. Fenomena5. Aplikasi6. Referensi
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PENDAHULUAN• Bentuk mangan di alam pada umumnya:
pyrolusit (MnO2)• Electrowinning Mn proses pemerolehan suatu
logam mangan dari larutan kaya hasil leaching dengan menggunakan arus listrik
• Kemurnian mangan yang didapat dengan elektrolisis >99,5 %
• Electrowinning mangan lebih sulit dilakukan• Populasi produksi electrolytic manganese di
dunia dikuasai South Africa
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Produksi Mangan Dunia
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Flowsheet Hidro-Elektro Metalurgi
REDUKSI BIJIH
LEACHING
PURIFICATION ELEKTROLISISPRODUK MANGAN
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PROSES ELEKTROWINING MANGAN
Rx. Pada DiafragmaSO42- + 2 H+ H2SO4
+ Anoda - Katoda
e -e-
Rx di KatodaMn 2+ + 2e- Mn E° = -1,18 vRx di AnodaH2O 1/2O2 + 2H+ + 2e E° = 1,23 V
Mn2+Mn2+MnSO4
Elektrolisis mangan
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Lanjutan…•Efisiensi arus = 68%•Temperatur = 36 - 38° C•Lar.elektrolit MnSO4•pH = 8,2 – 8,8•Katoda = 316 AISI stainless steel
rapat arus = 4,3 - 5,40 A/dm²•Anoda = silver-lead alloy
rapat arus = 9,70 – 15,00 A/dm²
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FENOMENA
Gambar Kurva Polarisasi hub. E- i
(b)Metals withIntermediate
Reactivity
0E
+
M / M2+
H2 / H+
i
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Lanjutan…• (E) logam kurang baik untuk pengendapan
• (𝜼) (i) • (𝜼) pH• Terjadi kemungkinan evolusi hidrogen pada
overpotensial hidrogen yang tinggiSolusi penggunaan sekat (diafragma)
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APLIKASI
Pengambilan kembali logam Mangan dari batere Production of electrolytic manganese metal
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Produk Metal Flake
Manganese plated containing 5 mg/l nickel
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REFERENSI•Habashi, Fathi. Handbook of Extractive
Metallury, Volume 4.Hydrometallurgy. •Ray&Ghosh. Principles of Extractive
Metallury, 2nd ed.
•Rosenquist. Principles of Extractive Metallury, McGraw Hill Kogakusha Ltd., Tokyo, 2nd ed., 1983.
•www.google.com\search”keyword”
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Terima kasih
Any question?