Two main methods of contact measurement of steel temperature are applied in industry: with help of disposable and multiple used thermotransducers. Reusable ones are fixed to the bottom of the graphite tip fixed directly on the reinforcement. Then they are able to measure the temperature of the graphite surface. Since it needs to even the graphite temperature and the temperature of the melt metal, the measuring takes some extra time. Therefore the thermotransducer is mounted in the metal for a long time.
Elemental, mineral and radionuclide composition of the Slovianska thermal power plant ash-slag has been determined. The ash-slag fractions refer to the first class of radiation safety. The quantitative oxide composition is the following: SiO2, Al2O3, Fe2O3, CaO and MgO. The granulometric fractions of wastes can be recommended as the components of light concretes.
In the article the results of experimental and theoretical researches are presented heat- and mass-transfer during the filtration drying of feedstock for slag gravel production. Time-history of temperature of thermal agent is experimentally investigational on the height of layer of dry and moist raw material materials and dependence of speed of moving of mass-transfer zone is certain on a temperature.
The article deals with the results of theoretical and experimental research on the production of ceramic pigments of blue color with the structure of spinel on the basis of slag of aluminothermal production of ferrotitanium. The sequence of the physical and chemical processes that determine the formation of the set of crystalline phases under drossy pigments burning was established. The influence of the concentration of cobalt oxide and the temperature of researched pigments firing on their optical-color characteristics was studied.
The possibility of obtaining brown pigments with the use of blast furnace slag from waste water containing nickel is justified. The scheme of the main reactions is proposed. The kinetics of the reactions is studied. The contribution of the chemical interaction into the overall degree of treatment is established by potentiometric titration. The influence of the main factors on the degree of nickel extraction is determined. The phase composition of the formed pigment is established with the help of X-ray analysis. Rheological properties of the pigment particles are set.