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The interaction of the filler (distensillimanit or binder (sodium aluminate) after mixing them to form a mold wash, drying the paint and removing water of crystallization. The conclusion of the sodium aluminate suitability as a foundry binder paints.

The possibility of increasing the hardness (strength) nonburning-on coatings based on distensilimonita and lingosulfanata as binding by the addition of sodium aluminate and polyethylene glycol (PEG-200) was usearched. It was found that addition of these substances enhances strength for the first one temperature ranges 130–1200 ºC, and for the second one – only after drying.It is shown that for distensilimonita zircon (ZrSiO4) these substances provide high strength and as separate binders. But for paints based on Al2O3 their use is not efficient.

The method and device for measuring of the strength of the core casting refractory paint at high temperatures were developed. It has been shown that the failure strength sodium aluminates binder after testified that decrease of sodium aluminates binder strength after being in the range of 300–600 °C is lower than that for sodium silicate. There is a correlation between hardness and strength of the paint during heating at 1300 °C.

Comparison of the properties of the casting paints based on sodium silicate and sodium aluminat, and sodium aluminat as an additive to the ink for the organic binder has shown that sodium aluminat provides a higher level of properties than sodium silicate and aluminat, in addition to an organic paint binder improves properties

Comparative researches showed that sodium aluminate can be successfully used as a modifying addition into the foundry paints on the basis disthen-sillimanite and lignosulfonate, as well as the binder for the chill mould paints based on graphite.

Analysis of existence of initial raw materials for production of the superdispersed powders Al(OH)3 and Al2O3 in the Republic of Belarus is given, and also parameters of technological process of their production by sol-gel method are determined. Data on degree of efficiency of additions of powders to the traditional modifiers eliminating chill in castings of gray cast iron is provided.

Comparative researches of foundry paints showed that the most acceptable basis for them is disthenesillimanite and it is possible to use sodium aluminate solution as a binding agent.

The technology of separate extraction of bismuth and molybdenum from spent catalyst was presented and information on the effectiveness of its use in a composition of comprehensive modifier in the iron-carbon alloy was given.

The mechanism of cast iron alloying through slag phase due to use of nickel and copper oxides is considered and the analysis of kinetics regularity of alloying in case of absence of fuse in the form of milled cast-iron chips in slag and at their presence in it is carried out.

Alloying process of cupola iron by means of input into charge structure of briquettes of the worked-out coppermagnesium catalysts is investigated. This technology allows to carry out recycling of expensive metals, such as copper, and to raise strength properties of cast iron melted in a cupola.

The method of determination of durability of paints after heating up to various temperatures by the value of hardness of coverings is offered.

It is established that for the purpose of increase of modifying efficiency of the melt from gray cast iron it is possible to use mechanically alloyed aluminum powder with superdispersed particles of aluminum and graphite oxide.