CNSL refine system

CNSL processing technology

Cashew nut shell liquid is a by-product of the cashew industry. The shell of the nut contains a dark reddish brown viscous liquid. It is called the cashew nut shell liquid. The CSNL content of the raw nut varies between 20 and 25 percent. There are more than 200 patents for its industrial application, in particular, its use as raw material for phenolic resins and friction powder for the automotive industry.  Cashew nut shell liquid (CNSL) consists unsaturated phenolic compounds, anacardic acid (90%) and cardol (10%) with minor amounts of 2-methyl cardol. Three different methods used in extracting cashew nut shell liquid from cashew nuts are mechanical, roasting and solvent extraction. The processes used are mainly hot-oil and roasting in which the CNSL oozes out from the shell. CNSL finds a wide array of applications such as friction linings, paints & varnishes, laminating resins, rubber compounding resins, cashew cements, polyurethane based polymers, surfactants, foundry chemicals and intermediates for chemical industry. CNSL exhibits potent antibacterial activity against Gram-positive bacteria and weak antifungal activity against molds. Traditionally it is to treat such scurvy, sores, warts, ringworm and psoriasis. It could be a source of new antimicrobial agents, especially for use in foods and cosmetics.


  • Cashew  hell Liquid Prepolymer
  • Diesel Oil from Cashew Nut Shell Liquid
  • Melt-rheology of Natural Rubber Modified with Phosphorylated
  • Cashew Nut Shell Liquid Prepolymer- A Comparative Study with Spindle Oil
  • Preparation Of Insulation Varnish From Cashew Nut Shell Liquid (CNSL) Based Resin

Technology Process:



Machinery & Technology

Screw conveyor & air conveyor: use move shell from shelling processing to pressing processing

Cashew shell Oil pressing processing: use principle screw to pressing take oil from shell of cashew

Cashew nut shell liquid Refine processing: this System use for refine CNSL after pressing oil Cooker with high temperature

MS Tanks: use store CNSL after finished

Cashew shell Cake pressing machine: waste after pressing oil, will be enter hydraulic pressing machine with pressure 100 ton, with mould to pressing cake