Pb-Sb-Sn dross from Pb refining process recovery vacuum distillation furnace

Vacuum distillation furnace is a newly developed distillation furnace by Unionsum.Now it is widely used by customer to recover Sn, Sb, Bi, Ag, and Cd from drosses from refining process, slag, Lead eletro-refining anode slime, Copper eletro-refining anode slime and so on. Its main power is that it can separate Sn, Zn, Ag, Pb and Sb from each other when they are in the alloy.

Decrease boiling point of metals in alloy under vacuum condition to distil & purify each low boiling point(≤2000°C) metal from alloy and leave & purify high boiling point metals Produce liquid metal or nanoscale powder by control of the condensation speed. 

• Bi-Ag-Zn slag, Pb-Ag-Zn slag distillation

Bi-Ag-Zn slag, Pb-Ag-Zn slag from adding Zn to removal Ag process for Bi /Pb fire-refining process can go through vacuum distillation process to separate Bi-Zn or Pb-Zn from rich Ag residue.

• Pb/Cu floating slag treatment

Pb/Cu floating slag from Cu removal process for Pb (95~98%) fire-refining can go through vacuum distillation process to separate Pb from Copper matte (Pb≤2%).

• Ag recovery from Lead anode slime and Copper anode slime

Pb anode slime with precious metal (Au/Ag), or crude rich Lead from reduction smelting, can be through vacuum distillation process to separate Pb/Sb/Bi from rich Au/Ag residue.

• Pb secondary material distillation

Pb secondary material can go through vacuum distillation process to separate Pb/Sb/Bi from Sn/Cu/Ag/Au residue.

• Spent Cd-Ni battery pollution-free recycling

Cd-Ni batteries can go through comprehensive process to produce stainless steel and Cd ingot (99.998%).

• High pure Zn ingot distillation

Zn ingot (98%) can go through distillation process to produce high pure Zn ingot (99.999%).

• Valuable metals enrichment from hard Zinc

Hard Zinc can go through distillation process to produce Zn (99.5%), remove Fe / Pb, and enrich Ag/Ge/Im. 

• High-pure super-fine Zn powder

Zn (90~99%) can go through distillation process to produce high-pure super-fine Zn powder (99.99%, 2~15μm).

• Hot galvanizing Zn residue distillation

Hot galvanizing Zn residue (Zn/Fe/Al alloy) can go through distillation process to produce Zn ingot/powder (99.99%) and Al residue.

• Low energy consumption, 600~800kwh/MT raw materials
• High purity of metal product, ≥99.95%
• Can produce liquid metal and solid metal powder
• Large capacity, single furnace 10t/d, continuous or batch shift
• No off-gas, environmental friendly, hygiene working
• Automatically operation
• Low infrastructure cost, less construction area

Unionsum offer experience center in Hunan province, which can supply customers a different consumption patterns, it means distillation test experience for metals of boiling point under 2000°C before order.

Unionsum, a subsidiary of CRIMM, provides sustainable system solution for mining and

metallurgy industry, including engineering, procurement and construction, and offers a widerange of

scientific research and consultingservices.

                                                   Mining and Metallurgy Experts 

History from 1953

Most authoritative and comprehensive organization in China mining and metallurgy industry

2 academicians of China Engineering Academy, 108 professors and 500 senior engineers

50 Laboratories and Pilot Plants (2 state key Labs)

Decades experiences in research and engineering service

 Qualifications 

 Clients Visiting 

 Global Market 

                                           Vacuum distillation project at Bulgaria                                          Rotary Furnace at Thailand                                         

 Contact information 

Skype: claire.zhou

M.P: 86-18890384660

Web:           http://unionsum.en.china.cn

Add: 3F, Yubang Internation Plaza, No.222, Xinyao Road (S),

Tianxin District,Changsha, Hunan, China

-