ABSTRACT:

In this paper are studied the possibilities of using technical lignin as a promising raw material for the development of various types of binder for foundry. In order to overcome the resource deficit problem, new technical solutions are required for the use of new materials, the advantages of which are to rationalize the use of the available resource potential of the plant processing industry, using technical lignins as an example. Experimental studies have been conducted to find effective modifiers of technical lignin. A class of substances has been established that makes it possible to increase the binding ability of technical lignosulfonates in a technologically acceptable level. The results of the development of foundry binder material based on technical lignin (TLS) allow us to talk about the technological feasibility of creating binder materials based on lignin materials that can successfully compete with phenol-based synthetic resins widely used now. Lignosulfonate materials can be considered as a typical example of technology for resource conservation and rational use of secondary raw materials produced from renewable natural resources.