Development of Chosen Social and Economic Indicators of Using Raw Materials in the Context of Sustainability in Slovakia

2020 ◽  
pp. 285-297
Author(s):  
Katarina Culkova ◽  
Andrea Rosova ◽  
Michal Cehlar ◽  
Henrieta Pavolova
Keyword(s):  
Raw Materials ◽  
Economic Indicators

scholarly journals Smelting options for carbon ferrochrome based on ore raw materials, middlings and their technological evaluation

2022 ◽  
Vol 320 (1) ◽  
pp. 51-59
Author(s):  
S. Baisanov ◽  
◽  
Ye.Zh. Shabanov ◽  
K.V. Grigorovich ◽  
R.T. Toleukadyr ◽  
...  
Keyword(s):  
Large Scale ◽  
Raw Materials ◽  
Main Idea ◽  
Economic Indicators ◽  
Processing Plant ◽  
Technological Parameters ◽  
Gas Cleaning ◽  
Carbon Ferrochrome ◽  
Technological Evaluation ◽  
Technical And Economic Indicators

The article presents the results of large-scale laboratory tests carried out in the conditions of the Chemical and Metallurgical Institute named after V.I. Zh. Abishev on the use of briquetted mono-charge in the smelting of carbon ferrochrome on a 250 kVA furnace. The purpose of these studies was to determine the technological parameters of the use of briquetted mono-charge containing in its composition chrome ore, wastes from the production of high-carbon ferrochrome, middlings and various carbonaceous reducing agents. The main idea of using these briquettes was to multiply the contact surface of the reductant and ore, which should speed up the technological process. The principal possibility of smelting a standard alloy using briquetted mono-charge is shown. The alloy for individual charge options meets the requirements of the standards. In comparison with the technology without the use of briquettes, the mono-charge technology has shown advantages in all main parameters. The technology with the use of briquettes from the dust of the AktZF gas cleaning system is distinguished by a low yield of non-standard metal and slag, the bulk of the material goes into the gas collection system. Technologies from briquettes from fines pellet production area of Donskoy ore mining and processing plant and flash have very low specific technical and economic indicators and cannot be recommended for industrial use. Improvement of briquetting modes and technology of their smelting is required. The technical and economic indicators were higher than the current one, showed briquettes from ore and coke of the People's Republic of China, briquettes of ore from borlin and shubarkol coals of Kazakhstan.

Effectiveness of using naked oat in compound feed for quails

2020 ◽  
pp. 4-11
Author(s):  
S. Shpynova ◽  
O. Yadrishchenskaya ◽  
T. Selina ◽  
E. Basova
Keyword(s):  
Energy Content ◽  
Raw Materials ◽  
Live Weight ◽  
Economic Indicators ◽  
Farm Animals ◽  
Feed Consumption ◽  
Control Group ◽  
Meat Production ◽  
Naked Oat ◽  
Experimental Group

The development of industrial poultry farming requires not only the breeding of new highly productive poultry breeds, but also the development of new rearing technologies and the improvement of standardized nutrition. Currently, in the field of feeding farm animals and poultry an important research area is the search for cheaper non-traditional and affordable feed products that can replace part of the grain in the poultry diet. It is very important to use local raw materials. One of these crops is naked oat, which has the highest energy content, the highest concentration of lysine and methionine among all cereals. The purpose of the researches was to determine the eff ectiveness of using naked oat in compound feed for quails. The results of the influence of complete nutrient-balanced compound feeds with naked oat on zootechnical and economic indicators in the rearing of quails have been presented in the article. It has been found that the live weight of quails in the experimental group has been increased by 3,06 %, while the average daily feed consumption has been increased by 1,83 %. Feed expenditures per 1 kg of live weight gain in the experimental group have been lower by 1,31 % due to the absorption of feed nutrients. According to the results of the balance experiment, the digestibility of raw protein has increased by 1,90, fat by 0,41 %, nitrogen-free extractive substances by 2,77 %. When calculating economic indicators, it has been found that the use of naked oat in compound feed for quails allowed to increase the yield of meat and revenue from its sale by 3,75 %. Despite an increase in the total cost of feed consumed by the experimental group by 2,27 %, the profi t has been received by 9,59 % more. The level of profi tability of quail meat production in the experimental group exceeded the indicator of the control group by 3,40 %.

Research of Titaniferous Ores Melting and Properties of Cast Iron and Slag

2019 ◽  
Vol 391 ◽  
pp. 221-225
Author(s):  
Andrey N. Dmitriev ◽  
R.V. Petukhov ◽  
G.Yu. Vitkina ◽  
E.A. Vyaznikova
Keyword(s):  
Blast Furnace ◽  
Cast Iron ◽  
Chemical Composition ◽  
Iron Ore ◽  
Raw Materials ◽  
Scientific Research ◽  
Economic Indicators ◽  
Furnace Melting ◽  
Technical And Economic Indicators

Questions of melting of iron ore and raw materials with receipt of cast iron and slag are considered in vitro. The chemical composition of cast iron of slag is studied in vitro. The viscosity of slag is researched. Object of research - titaniferous ores with various contents of titan dioxide. The technical and economic indicators of a blast furnace melting an agglomerate and pellets (a consumption of coke and productivity, a chemical composition of cast iron and slag) received from a concentrate of the Kachkanarsky deposit are calculated. The technique of scientific research is used [1].

scholarly journals ANALYSIS OF ECONOMIC INDICATORS FOR OIL FLAX PROCESSING

2018 ◽  
Vol 12 (4) ◽  
pp. 35-40
Author(s):  
E. V. Novikov ◽  
N. V. Basova ◽  
A. V. Bezbabchenko
Keyword(s):  
Raw Materials ◽  
Low Cost ◽  
Balance Sheet ◽  
Production Capacity ◽  
Fibre Production ◽  
Economic Indicators ◽  
Main Research ◽  
Processing Site ◽  
Effective Development ◽  
Technical And Economic Indicators

Oil flax grows in many countries of the world. Fibre production on its basis can significantly increase the profitability of flax-growing farms. At the present stage, taking into account the real possibilities of the national economy, for its effective development  it is necessary to introduce advanced technologies. Cur-rently, processing enterprises may choose among different technological equipment lines to process oil flax into fibre and thus get additional profit. (Research purpose) The determination of a technologically and economical-ly effective line for oil flax processing. (Materials and methods) The main materials for calculation were represent-ed by the indicators of production capacity, the average annual value of fixed as-sets, the amount of money spent on salaries and wages, etc. The main research method is the balance method that allows making a plan in the form of a balance sheet that takes into account the sources of inputs and the requirements for these inputs. (Results and discussions) The authors have considered low-cost lines for oil flax processing into short fibre on the basis of disintegrators of various brands (from domestic and foreign producers), offered characteristics of the fibre obtained in the lines, and analyzed technical and economic indicators of various technologi-cal lines under different conditions, and the payback period of capital expenditures for different oil flax acreages. (Conclusions) The authors have determined that the most effective is the pro-cessing of oil flax from an area of at least 1000 hectares, with a throughput capaci-ty of raw materials of at least 1000 kg/h and a distance of the transportation of straw rolls to a processing site of 50 km. They have also obtained technological and economic data that can be used in the organization of oil flax processing into marketable fibre.

scholarly journals The Methodical Aspect of the Choice of Innovative Technologies for the Production of Alternative Types of Motor Fuel

2021 ◽  
Vol 10 (525) ◽  
pp. 176-187
Author(s):  
V. V. Shpilevskiy ◽  
◽  
D. M. Kostenko ◽  
A. V. Shpilevskiy ◽  
◽  
...  
Keyword(s):  
Rational Choice ◽  
Raw Materials ◽  
Methodological Approach ◽  
Motor Fuel ◽  
Economic Indicators ◽  
Low Grade ◽  
Innovative Technologies ◽  
Methodical Approach ◽  
Synthetic Motor ◽  
Technical And Economic Indicators

The article is aimed at developing a methodological approach to a consistent and rational choice of promising for the development in Ukraine types of alternative motor fuel and innovative technologies for its production, substantiation of the system of technical and economic indicators of the complex for the production of synthetic motor fuel from the low-grade raw materials. One of the key problems of Ukraine’s energy provision today is its high dependence on the import of finished motor fuel, which can be reduced by the development in the country of alternative types of motor fuel based on the latest technologies. The article, based on the provisions of economic theory, discloses the essence of the developed methodological approach to the consistent choice of promising types of alternative motor fuel for their development in Ukraine and innovative technologies of its production. The developed methodological approach for rational choice of promising for the production in Ukraine and use of motor fuel types includes an evaluation of the following: compliance of consumer properties of certain types of motor fuel with the requirements of the existing motor fleet (target); efficiency of motor fuel production technologies (capabilities); sufficiency of resource provision for the production of motor fuel (restrictions). The methodical approach is brought to the level of the methodology, the use of which allows to identify promising types of alternative motor fuel for use in the country and innovative technologies of their production. Along with the developed methodical approach, the expediency of development in Ukraine of the synthetic motor fuel industry is proved on the basis of using the method of indirect coal liquefaction (according to the Fisher–Tropsch method). The result of the work is a system of technical and economic indicators of the complex for the production of synthetic motor fuel from the low-grade raw materials.

Microstructural characterization of laser-melted/roller-quenched dicalcium silicate

1988 ◽  
Vol 46 ◽  
pp. 582-583
Author(s):  
C. J. Chan ◽  
K. R. Venkatachari ◽  
W. M. Kriven ◽  
J. F. Young
Keyword(s):  
Particle Size ◽  
Raw Materials ◽  
Shape Change ◽  
Microstructural Characterization ◽  
Particle Size Effect ◽  
Dicalcium Silicate ◽  
Laser Melting ◽  
Uniform Size ◽  
Cell Shape Change ◽  
Wide Range

Dicalcium silicate (Ca2SiO4) is a major component of Portland cement. It has also been investigated as a potential transformation toughener alternative to zirconia. It has five polymorphs: α, α'H, α'L, β and γ. Of interest is the β-to-γ transformation on cooling at about 490°C. This transformation, accompanied by a 12% volume increase and a 4.6° unit cell shape change, is analogous to the tetragonal-to-monoclinic transformation in zirconia. Due to the processing methods used, previous studies into the particle size effect were limited by a wide range of particle size distribution. In an attempt to obtain a more uniform size, a fast quench rate involving a laser-melting/roller-quenching technique was investigated.The laser-melting/roller-quenching experiment used precompacted bars of stoichiometric γ-Ca2SiO4 powder, which were synthesized from AR grade CaCO3 and SiO2xH2O. The raw materials were mixed by conventional ceramic processing techniques, and sintered at 1450°C. The dusted γ-Ca2SiO4 powder was uniaxially pressed into 0.4 cm x 0.4 cm x 4 cm bars under 34 MPa and cold isostatically pressed under 172 MPa. The γ-Ca2SiO4 bars were melted by a 10 KW-CO2 laser.

Crystallization of barium hexaferrite

1992 ◽  
Vol 50 (1) ◽  
pp. 362-363
Author(s):  
Chung-kook Lee ◽  
Yolande Berta ◽  
Robert F. Speyer
Keyword(s):  
Size Distribution ◽  
Raw Materials ◽  
Barium Hexaferrite ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Promising Candidate ◽  
Crystallization Method ◽  
Temperature Heat ◽  
High Density Magnetic Recording ◽  
Temperature Heat Treatment

Barium hexaferrite (BaFe12O19) is a promising candidate for high density magnetic recording media due to its superior magnetic properties. For particulate recording media, nano-sized single crystalline powders with a narrow size distribution are a primary application requirement. The glass-crystallization method is preferred because of the controllability of crystallization kinetics, hence, particle size and size distribution. A disadvantage of this method is the need to melt raw materials at high temperatures with non-reactive crucibles, e.g. platinum. However, in this work, we have shown that crystal growth of barium hexaferrite occurred during low temperature heat treatment of raw batches.

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