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What qualifies as tin ingot raw material, and how is it processed?

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What qualifies as tin ingot raw material, and how is it processed?

October 30, 2025
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What qualifies as tin ingot raw material, and how is it processed?
 
  • ​Primary Sources:​
    • ​Tin concentrate (cassiterite, SnO₂)​​ → Smelted into ​​99.5%–99.8% crude tin​​ → Refined to ​​high-purity ingots​​.
    • ​Recycled tin (secondary smelting)​​ from scrap solder, e-waste, or alloys.
  • ​Processing Steps:​
    1. 1.
      ​Smelting:​​ Reduction of tin ore/concentrate in furnaces (electric/blast).
    2. 2.
      ​Refining:​​ Electrolytic or fire refining to remove impurities (Pb, Sb, Bi).
    3. 3.
      ​Casting:​​ Molten tin poured into molds to form ​​standard ingots​​.
  • ​Quality Checks:​​ Impurity analysis (AAS/ICP) before casting.
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Zhenan Metallurgy Co., Ltd

Pessoa de Contato: Mr. xie

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