Extractive metallurgy of nickel (Davenport)

Question 1

Platinum-group metals

Answer 1

Pt, Pd, Rh, Ru, Ir, Os

Question 2

Method of Extraction Ni from Saprolite Ore

Answer 2

Saprolite ores are mostly smelted to ferronickel, which typically contains 30% Ni and 70% Fe

Технология:

Сушка в трубчатой печи
Восстановительный обжиг в трубчатой печи
Плавка на черновой ферроникель в электропечи
Рафинирование
Грануляция

Question 3

Method of Extraction Ni from Limonite Ore

Answer 3

Limonite ores are mostly leached with hot sulfuric acid at a temperature of about 250 C and a pressure of about 40 bar.

Question 4

Типы никелевых руд.
Содержание Ni и Со

Answer 4

1. Сульфидные руды
2. Латеритовые руды: лимонитовые и сапролитовые

Both saprolite and limonite ores typically contain:
1.3%–2.5% Ni
0.05–0.15% Co

Question 5

Sulphide ores that are mined for nickel and cobalt typically contain:

Answer 5

1.5%–3% Ni
0.05%–0.1% Co