Requirements

Category

Group

Name of Scraps

Tin and Metallic Lump Tin Alloy Scraps

Pure
Tin
Scraps

Chemical Plating Tin Scraps

Grade1; Sn≥95%, no other impurities and oil stain.
Grade2; 90%≤Sn<95%, no other impurities and oil stain.
Grade3: 80%≤Sn<90%, no other impurities and oil stain.

Tin Alloy Scraps

Tin Radicle Alloy Scraps

Grade1: Sn≥90%, no other impurities and oil stain.
Grade2; 70%≤Sn<90%,no other impurities and oil stain
Grade3; 50%≤Sn<70%, no other impurities and oil stain

Other Alloy Scraps

Grade1: 30%≤Sn≤50%, no other impurities and oil stain.
Grade2: 3%≤Sn<30%, no other impurities and oil stain.

Tin and Tin Alloy Dross, Dust, Mud Slag

Tin Slag

Refining Slag

Particle Size
30mm max Moisture
10% max

Grade1; Sn≥60%, no other impurities and oil stain.
Grade2:40%≤Sn<60%,no other impurities and oil stain.
Grade3; 20%≤Sn<40%, no other impurities and oil stain.

Furnace Slag

Particle Size
100mm max
Moisture
10% max

Grade1; Sn≥30%, no other impurities and oil stain.
Grade2:15%≤Sn<30%, no other impurities and oil stain.
Grade3; 3%≤Sn<15%, no other impurities and oil stain.

Hydrometallurgy, Plating Slag

Particle Size
15mm max
Moisture
40% max

Grade1; Sn≥80%, no other impurities and oil stain.
Grade2:60%≤Sn<80%, no other impurities and oil stain.
Grade3; 40%≤Sn<60%, no other impurities and oil stain.
Grade4: 4%≤Sn<40%, no other impurities and oil stain.

Tin Mud

Tin Mud

Particle Size
1mm max
Moisture
60% max

Grade1; Sn≥60%, no other impurities and oil stain.
Grade2:20%≤Sn<60%,no other impurities and oil stain.
Grade3; 4%≤Sn<20%, no other impurities and oil stain.