Assessment of Casting Binding Materials Based on Modified Technical Lignosulfonates

This study examined the efficiency of employing technical lignosulfonates (TLS) - compositions in developing foundry binder materials that comply with the modern requirements for a casting production. Modifying TLS through a non-ionic surface-active substance (SAS), with the samples of neonol were used, and then investigated, as its action removes the disadvantages of insufficient strength properties. In comparison with the currently used synthetic resins, the new TLSbased binders possess high strength characteristics. Biopolymer binders based on TLS are superior to synthetic resins now in use, mainly in terms of labor safety, production ecology, and process economics, with the cost of TLS is 0.07-0.094 $ / kg, while the cost of the resin is 3.8-5.5 $ / kg. TLS is made from domestic plant materials, which is a renewable resource that can provide the required needs of foundry production. The disposal of the core and molding mixture containing binders modified with the TLS is eco-friendly; it uses a biopolymer base that is easily degradable in the natural environment. Moreover, the developed form does not produce toxins, which are phenolic-based synthetic resins obtained from the casting production.