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The article presents a comparison of the values of the soil deformability characteristics obtained at different densities of the sand base based on the results of laboratory tests3 and the results of computer modeling, using the software systems "ANSYS" and "Plaxis 3D".It was found that for loose sandy soils, at densities of 1.48 – 1.53 g/cm 3, close to experimental values of the deformation modulus were obtained using a three-dimensional finite-element model of polylinear isotropic hardening "PLAS (Miso)," in the program "ANSYS." For average density bases at ρ = 1.55 – 1.66 g/cm3 minimum differences between experimental and numerical values were obtained using the «Plaxis 3D» complex.

The work is devoted to the topic of researching the operation of a cooling tower in winter as a result of contact with cold air, when problems of freezing of its head wall arise. A methodic for calculating a cooling tower and an innovative way to improve its efficiency are proposed.

The characteristic features of slag formation and oxidative metal refining in 160-tonne converters of EVRAZ ZSMK JSC using metal slag scrap in the solid metal charge are considered. Technological advantages of the process are established for the reduction of iron oxides from the slag component of the iron-containing product in the processing of waste slags.

Technological process of steel production in converters using clinker-steel cakes and iron-bearing concentrates of "EVRAZ ZSMK" JSC slag processing unit ensuring liquid-phase reduction of iron from oxides is designed. Developed technology allows implementation of iron-containing materials recycling, reduces consumption of scrap, increases liquid metal yield, improves environmental safety in the region.