About Pyrite
Formula：FeS2
CAS: 1309-36-0
Shape: a crystal occurs as cubic or hexagonal 12-side.
The collective body often occurs as close blocks, grains or soaked status.
Color: light brass color or golden color
Streak: greenish black or black
Luster: metal
Hardness: 6～6.5
Density: 4.9～5.2g/cm3
Electricity conductivity: weak
Difference from other pyrite ore
Pyrite is the most widely distributed metal in the crust. Usually it occurs as idiomorphic crystal with strong metal luster,
which makes it easy to differentiate from other metal. It’s similar to chalcopyrite but shows lighter luster and a higher
percentage of idiomorphic crystal. It is usually co-generated together with all kinds of pyrite such as chalcopyrite and
chalcopyrite and exists in rhodochrosite in the form of grain crystal.
Specification
|
Symbol |
Chemical Composition |
Size |
Character description |
Commend use |
|
S |
Fe |
SiO2 |
Pb |
Zn |
Al2O3 |
C |
As |
H20 |
|
MMIP50 |
≥50% |
≥45% |
≤3.0% |
≤0.1% |
≤0.1% |
≤0.5% |
≤0.3% |
≤0.005% |
≤1.0% |
(10~50)mm ≥95% |
High quality ore crystal with high purity and very little impurity content |
used as the perfect auxiliary material in the industry of smelting special steel |
|
MMIP49 |
≥49% |
≥44% |
≤3.0% |
≤0.2% |
≤0.1% |
≤1.5% |
≤0.3% |
≤0.01% |
≤1.0% |
(10~50)mm ≥95% |
|
MMIP48 |
≥45% |
≥40% |
- |
- |
- |
- |
- |
- |
≤1% |
(about)-100mesh |
Milled by high quality pyrite |
used as abrasive in rubbing of mill |
|
MMIP38 |
≥38% |
≥36% |
- |
- |
- |
- |
- |
- |
≤10% |
-100mesh≥95% |
Produced by flotation of pyrite, with high purity and little quantity of harmful impurity, |
mainly used as adding material of the smelting nonferrous metals ore (copper ore). | Remark:We can offer other special size or adjust content of S according to the requirement of customers.
Remark:In bulk or in bags of 1500kgs.
Application example
Copper smelting by means of pyrite
Blow air and heat it up to make iron and pyrite reach the oxidation level
2CuFeS2 + 3O2 → 2CuS + 2FeO + 2SO2
↓
Heat up calciate, quartz and pyrite to 1100℃
CuS + S（in pyrite） + O2 → Cu2S + SO2
Meanwhile as the cupric sulfide precipitates
CaCO3 + SiO2 → CaSiO3 + CO2
CaSiO3 + FeO + SiO2 → 2(Fe,Ca)SiO3
Thus generate iron oxide mixed with stove dregs and separate them
↓
Extract precipitating cupric sulfide and blow in air
Cu2S + O2 → 2Cu + SO2↑
↓
When necessary, perform further electrlyting with sulfuric acid and cupric sulfide solution
↓
Recycle gold, silver and platinum from the precipitated impure matter
↓
Store lead extracted from the ore in a place above the melting point
Copper with higher melting point will separate and float upward
|
