The work investigated the possibility of using the technical lingo-sulfonate as a binder for the manufacture of small cores by blow-off methods in the production of shaped cast-iron casting, similar to the dominant at the present time Cold-Box-Amin process. It is shown that the advantage of lignin materials is their safety, manifested both in the workplace - directly in the foundry, and in ensuring environmental cleanliness in the area of the location of such production. It is indicated that, when switching to the proposed lignin materials, the price of binders can be reduced by two orders of magnitude. Experimental compositions of mixtures are proposed, and their tests are carried out. The quantitative characteristics of the composition of the sand-oligo-sulfonate mixture are established. As a result, a pilot batch of rods was produced, and high-quality shaped cast iron castings were made. Special attention is paid to the demand to develop the specialized equipment, focused on lignin binders.

The paper analyzes the problem of using technological lignins to make new bindings for casting manufacturing processes. The reasons, restraining their application in casting manufacture, are considered. The objective (based on the physical nature of the material) and subjective (based on commercial benefit) reasons are presented. The paper considers the perspectives of application of technological lignins by the example of technological lignosulfonates use which is the main representative of the technological lignins family on the Russian market of bindings.

Nowadays the ways of overcoming a problem of resource deficit include rationalization of the existing resource potential. In this respect it is expedient to use the secondary products of vegetable raw material processing due to expansion of lignosulfonate materials application.

The paper considers the possibility of using unified dry mixes for machine-building enterprises with small-scale and single-piece production of castings. Dry mixes for production of expendable molds and rods have been developed. Their distinctive feature is that cladded CMC high-silica sand is used as a filler, and powder-like LST are used as a binder. All the ingredients of the mix are products of domestic and Russian production, are not scarce, are not expensive in price, are simple and safe to use. Experimental-industrial tests of the proposed dry mixes were carried out, and a pilot batch of castings was produced in the amount of 5 tons of good casting (small shaped cast-iron casting). Taking into account the specificity of the foundries at enterprises with single-piece and small-scale production, the features of their technical equipment, an engineering solution, focused directly on this segment, has been developed and proposed. The engineering solution relates to the manufacturing processes of casting molds and rods production, and consists in the development of formulations for dry foundry mixes. A distinctive feature of the formulations is: simplicity in use, versatility in functionality, reliance on the domestic resource base, which means that it is affordable, not expensive, and environmentally friendly, safe both for production personnel and for the environment, in the area where the industrial enterprise is located.