Major minerals containing nickel | ||
mineral | Molecular formula | Nickel content ( % ) |
Nickel pyrite | ( Fe , Ni ) 9 S 8 | Containing Ni22~4 21 |
Purple sulfur nickel (iron) ore | FeS · Ni 2 S 3 or ( Fe , Ni ) S 4 | Containing Ni38.9 |
Needle nickel ore | Containing Ni64.7 | |
Hui (iron) nickel ore | Ni 3 S 4 [Ni , Fe] 3 S 4 | Contains Ni57.9 , ( 42~55 )1 |
Nickel-containing pyrrhotite | Fe1-xS ( X=0~0.2 ) | Containing Ni0.25~14.22 1 |
Sulphur nickel ore | NiS 2 | Containing Ni 47.8 |
Red arsenic nickel ore | NiS 2 | Containing Ni 43.9 |
Arsenic ore | Ni 3 As (close to Ni11As 8 ) | Containing Ni 54.0 , ( 51.9 ) |
Arsenic nickel ore | NiAsS | Containing Ni35.4 |
Dark nickel serpentine | ( Ni , Mg )· SiO 2 · nH 2 O | Containing NiO 2 ~47 1 |
Nickel chlorite | ( Ni , Mg ) Si 2 O 6 ( OH ) 4 | Containing NiO 2 0~40.2 |
Green kaolinite | RO · R 2 O 3 ·( 4+n ) SiO 2 or RO · R 2 O 3 ( 3~3.5 ) SiO 2 · nH 2 O | Containing NiO1.1~1.8 |
Green nickel mine | NiO | Containing Ni78.6 |
Nickel magnetite | NiFe 2 O 4 or ( Fe , Ni ) 3 O 4 | Containing NiO31.9 |
Nickel vanadium | NiSO 4 · 6H 2 O | Containing NiO28.4 |
Tourmaline | NiSO 4 · 7H 2 O | Containing NiO26.6 |
Precious nickel ore | NiCO 3 · 2Ni ( OH ) 2 · 4H 2 O | Containing NiO59.6 |
Nickel limonite | ( Fe , Ni ) O ( OH ) nH 2 O | Containing Ni is low, easy to change, for general content |
Primary ore: SNi/TNi>70%
Mixed ore: SNi/TNi 45% to 70%
Oxidized ore: SNi/TNi<45%
Nickel silicate ores by magnesium oxide content is divided into:
Iron ore: MgO <10%
Ferrous magnesia ore: MgO 10% to 20%
Magnesium ore: MgO>20%
The main harmful impurities of nickel ore are copper (in nickel silicate), lead , zinc , arsenic, fluorine, manganese , antimony , bismuth , chromium and the like.
The nickel sulfide ore can be divided into the following three grades according to the nickel content, the rich ore: Ni>3%; the rich ore Ni 1%～3%; the lean ore: Ni 0.3%～1%. Rich ore and lean ore are subject to beneficiation , and special rich ore can be directly smelted into the furnace.
Nickel sulphide deposits generally contain copper, often referred to as copper-bearing nickel sulphide deposits. In nickel ore bodies, copper does not need to be separately defined and delineated. When the nickel grade does not reach the index and copper can form an ore body alone, the indicator is performed by copper. In addition to copper, typically frequently with iron, chromium, cobalt, manganese, platinum group metals, gold, silver, selenium and tellurium, the content of useful components associated these requirements are: Pt, Pd was 0.03g / t; Os Ru, Rh, and Ir are 0.02 g/t; Au is 0.05 to 0.1 g/t, Ag is 1.0 g/t, Co is 0.01%; Se is 0.0005%; and Te is 0.0002%.
In the serpentine , talc and other deposits containing high nickel, often have recycling value, in the evaluation of this type of deposit should pay attention to the comprehensive evaluation of nickel.
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