ABSTRACT:

This paper is given an analysis of the use of technical lignins for creating new binding materials that meet the current level of foundry requirements. The reasons that restrain their use are discussed. Their objective (based on the physical nature of the material) and subjective (based on commercial benefits) origins are shown. Prospects for the use of technical lignins are considered, for example, the use of technical lignosulfonates (the main representative of the family of technical lignins on the markets of binders). The place and role of lignin-containing materials in the general view of the thematic focus of research on the synthesis of new binders, namely the creation of binders on a biopolymer basis, are investigated. The reasons for the relevance of this direction, based on ensuring a full cycle of environmental safety of production, from sanitary and hygienic working conditions in production to ensure the free biodegradation of production wastes are revealed. Examples of successful implementation of technological processes for producing castings based on technical lignosulfonates through the use of methods of high-energy mechanical action are given.