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VDU
Choices

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Batch Style

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Description: Functions with one batch at a time. Load/Melt/Feed/Separate/Cool/Dispense.

Automation available: Load Only 

Commercial Reasons:

 

  • Lowest CAPEX

  • Highly flexible feed choices

  • Efficient

  • High metal recovery

  • Simple flowsheet

  • Simplest to operate

  • Short separation cycle

  • Environmentally friendly

 

Here's how vacuum distillation fits into the tin and lead processes:

 

  1. Lowering the Boiling Point: By creating a vacuum, the boiling point of a substance decreases. This principle is useful for metals refining. In a reduced pressure environment, metals will vaporize at much lower temperatures than they would at atmospheric pressure.

  2. Separation Based on Boiling Points: In a vacuum, metals can be separated based on their boiling points. For example, the boiling points of lead, tin, and antimony are different. By slowly increasing the temperature and controlling the pressure, one can selectively vaporize one metal at a time and then condense it separately.

  3. Reducing Oxidation: Operating under a vacuum can help reduce the chance of oxidation since the process typically excludes air. This is especially important for metals that are easily oxidizable.

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Our VDUs are often used in combination with impurity removal kettles in the refining process. Please ask us about our live on-site trials.

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1. Type: DBLJ03-700/800 Batch VDU  

①　Capacity: 1~1.6 MT/day

②　Metal Usage: Tin-Lead Separation, Tin-Bismuth Separation, Tin-Zinc Separation, Tin-Lead-Antimony Separation, Tin-Lead-Antimony-Arsenic Separation, Tin-Indium Separation, Lead-Silver (Gold) Separation, Lead-Bismuth-Silver (Gold) Separation, Lead-Bismuth-Antimony-Silver (Gold) Separation, Lead-Bismuth-Antimony-Copper-Silver (Gold) Separation, etc…Almost all the complex (high-content impurities) nonferrous metal alloys Separation and purification.

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2. Type: DBWJ05-3 Batch VDU  

①　Capacity: 2.5~3.5 MT/day

②　Metal Usage: Hot galvanizing scrap Separation, Hard Zinc Separation, Zinc-Iron Separation, Zinc-Iron-Aluminum Separation, etc… Almost all types of wasted Zinc alloy recycle.

3. Type: DBLJ04-1000 Batch VDU  

①　Capacity: 0.8~1.2 MT/day

②　Metal Usage: Hot galvanizing scrap Separation, Hard Zinc Separation, Zinc-Iron Separation, Zinc-Iron-Aluminum Separation, etc… Almost all types of wasted Zinc alloy recycle.

4.  Type: DBLJ14-1000 + DBLJ13-300 Combination = DBLJ13-1000 Batch VDU 

①　Capacity: 1~2 MT/day

②　Metal Usage: Water-content Crude Selenium from Lead or cooper refining process, Smelting and Refining, Selenium-Lead-Silver (Gold) Separation, Selenium-Lead-Bismuth-Silver (Gold) Separation, Selenium-Lead-Bismuth-Antimony-Silver (Gold) Separation.

Semi-Continuous Batch Style

Description: Functions with one batch at a time, but with continuous feed after melt. Load/Melt/Feed/Separate/Cool/Dispense.

Automation available: Partial (Continuous and precise feeding)

Commercial Reasons: 

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  • Lower CAPEX

  • Flexible feed choices

  • Highly efficient

  • Very high metal recovery

  • Simple flowsheet

  • Simple operation

  • Shorter separation cycle

  • Environmentally friendly

5.  Type: DBLL-J08-2 High Purity Metal Semi-Continuous Batch VDU  

①　Capacity: 1~2 MT/day

②　Metal Usage: High purity Tin purification, High purity Indium purification, High purity Lead purification, High purity Bismuth purification, High purity Cadmium purification, etc.

Continuous Style

Description: Functions contiguously. Load/Melt/Feed/Separate/Cool/Dispense/Load>

Automation available: Partial or Complete

Commercial Reasons: ​

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  • Low production costs

  • Flexible feed choices

  • Highest efficiency

  • High metal recovery

  • Simple flowsheet

  • Simple operation

  • Shortest separation cycle

  • Environmentally friendly

6. Type: DBLL03-10 Continuous VDU  

①　Capacity: 10~15 MT/day

②　Metal Usage: Tin-Lead Separation, Tin-Bismuth Separation, Tin-Lead-Antimony Separation, Tin-Lead-Antimony-Arsenic Separation, Tin-Indium Separation, etc… Almost all the Tin alloys Separation and purification.

7. Type: DBLL03-25 Continuous VDU  

①　Capacity: 20~50 MT/day

②　Metal Usage: Tin-Lead Separation, Tin-Bismuth Separation, Tin-Lead-Antimony Separation, Tin-Lead-Antimony-Arsenic Separation, Tin-Indium Separation, etc… Almost all the Tin alloys Separation and purification.

8. Type: DBLL02-10 Continuous VDU  

①　Capacity: 10~15 MT/day

②　Metal Usage: Lead-Silver (Gold) Separation, Lead-Bismuth-Silver (Gold) Separation, Lead-Bismuth-Antimony-Silver (Gold) Separation, high purity Lead or Bismuth production.

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