The sequence of profiling of a flowing part and the water wheel is considered, expressions for definition of geometrical parameters are resulted and the method of forming-up of the water wheel lattice profile is presented.
In article was considered following parameters: influence of input and output angles of stator and rotor on hydraulic efficiency coefficient, calculating sequence and construction of setting, mechanical characteristics of direct-flow multi-step hydro-turbine for driving of submarine machines and mechanisms.
Energy losses in the flowing channel of a hydraulic turbine are considered. All losses are divided into several groups: profile losses, end losses, volumetric, hydraulic and mechanical losses. Theoretical studies have shown that the main impact on the efficiency is rendered by hydraulic losses, to decrease which blade profiling and enhancement of sealing joint design are required.
The reserves of non-ferrous metal ores have been depleted in recent years, but metal production is not decreasing, but increasing from year to year. Therefore, the mining industry has to extract and process very large volumes of ores. Complex ores usually contain less than 1% of usable metal. To extract the metal, it is necessary to crush the ore into small particles. In connection with this technology, the amount of fine tailings from beneficiation increases dramatically, as well as the load on tailings hydrotransport. To improve the efficiency of hydraulic conveying, it is necessary to increase the concentration of fine solids in the pulp. The ability of solids to form spatial structures in the slurry is of paramount importance because such hydraulic mixtures can be considered sedimentation resistant. This paper studies the sedimentation stability of tailings from copper ore processing plants.
