Sodium Ethyl Xanthate (SEX)/Flottec SEX/FloMin C 3200/AERO 325
- Weak, highly selective collector
The most widely used is Sodium Isopropyl Xanthate in Copper flotation circuits
The longer the hydrocarbon chain on the xanthate molecule, the stronger the hydrophobicity is likely to be. Hence, sodium ethyl xanthate (SEX) with two carbon molecules in the chain, is the weakest xanthate and is used where selectivity is most important. It is applicable to the flotation of minerals that are already activated or partially hydrophobic and float easily, such as activated zinc, nickel and lead.
Xanthates in mining
Xanthates have been the workhorse of sulfide mineral flotation since the 1920’s (Harris 1989), and they represent the largest volume of any sulfide mineral collector. Xanthate collectors are salts consisting of a non-polar hydrocarbon group, which provides the hydrophobicity to a sulphide mineral, pointing outward from the mineral to the solution, and a polar group that adsorbs onto the sulphide mineral surface.
PRODUCTION OF XANTHATES:
RAW MATERIALS: are Carbon Disulfide, Caustic Soda (Sodium Hydroxide) or Potash (Potassium Hydroxide) and a determined alcohol, which provides it with collecting properties in flotation processes of metallic and polymetallic minerals.
WHAT IS THE QUALITY OF YOUR XANTHATE?
The production of pure xanthates requires pure raw materials and then the reaction must also be driven to completion. This requires sophisticated process design and control of the manufacturing process which, in turn, influence the price and metallurgical efficiency of the product.
DOWNLOAD OUR CASE STUDY TO AVOID BUYING SUB-STANDARD XANTHATE!
All of the xanthate products (PAX, SIBX, SIPX, SEX-ETC) are classified as dangerous goods, Class 4.2 spontaneously combustible.
Problems in the handling and use of xanthate have arise when:
• Impure raw materials were used and side reactions occur which do not produce Xanthate, but other unstable compounds.
• The reaction between raw materials (CS2, sodium hydroxide and the alcohol) is not driven to completion and significant amounts of the un-reacted materials are left in the product. Intermediate, unstable thio compounds are also created and may be left in the product.
• The product degrades into CS2 and alcohol, either after manufacture in the solid form or after dissolution before use.
• Packaging, transport or storage results in contact of the product with air.
- UN No: 3342
- Transport Hazard Class: 4.2 Spontaneously Combustible
- Packing Group: III
- Proper Shipping Name or: XANTHATES
Safety and Handling:
- Wear clothing that offers ankle to wrist coverage
- Wear impervious gloves
- Wear chemical goggles if a risk of splashing/spray exists
- Wear respirator if risk of inhalation exists
- Use reagents in areas with adequate ventilation
- Do not breathe dust/vapour/mist/aerosol.
- Avoid contact with skin and eyes.
- In case of contact with eyes, rinse immediately with
plenty of water and seek medical advice.
- Wear suitable protective clothing, gloves and eye/face protection
Download our Sodium Ethyl Xanthate msds for more safety and handling information.