scholarly journals Experimental feed mixer performance study

2021 ◽  
pp. 90-93
Author(s):  
G. B. Mammadov ◽  
T. F. Kamran
Keyword(s):  
Experimental Work ◽  
Rotational Speed ◽  
Raw Materials ◽  
High Grade ◽  
Laboratory Studies ◽  
Performance Study ◽  
Sugar Beets ◽  
Operating Modes ◽  
Subsequent Decrease ◽  
Increase In Productivity

The importance of rational use of waste from the processing of grapes, fruits, sugar beets and grain crops in the preparation of high-grade feed is noted. In this regard the relevance of the development of effective technical means for mixing liquid or pasty additives with traditional feed is emphasized. An experimental feed mixer with the ability to produce feed mixtures using secondary raw materials of various aggregate states has been developed. The task of the experimental work was to study its performance under various operating modes. As a result of laboratory studies, it was found that with an increase in the rotational speed of the working body from 60 to 120 min-1 the productivity of the experimental feed mixer increased from 2,0 to 3,3 t/h. With the subsequent decrease in the amplitude of oscillations of the inter-screw cavity (with a decrease in its volume) the increase in productivity slows down.

Synthesis of Low Viscosity Polydimethylsiloxane Using Low Grade of Octamethylcyclotetrasiloxane

2021 ◽  
Vol 1028 ◽  
pp. 365-370
Author(s):  
Diba G Auliya ◽  
Soni Setiadji ◽  
Zulfi Mofa Agasa ◽  
Fitrilawati ◽  
Norman Syakir ◽  
...  
Keyword(s):  
Ring Opening ◽  
Raw Materials ◽  
Vitreoretinal Surgery ◽  
Production Costs ◽  
Low Grade ◽  
High Grade ◽  
High Quality ◽  
Low Viscosity ◽  
Polymerization Method

Polydimethylsiloxane (PDMS) has been widely used as a vitreous humour substitution in vitreoretinal surgery. Due to its limited availability and increasing domestic needs, the price of PDMS in Indonesia became very expensive. Previously, we reported the synthesized of PDMS from a high grade of monomer of 98% of Octamethylcyclotetrasiloxane (D4) and found that all PDMS samples produced high quality samples similar to that of commercial one. However, by considering the ease of obtaining raw materials and also the production costs, the synthesis of PDMS using monomer which easy to be found in Indonesia and low production costs is needed to be developed. Here, we reported the synthesis of PDMS using low grade of 96% of D4 in order to produce high quality of PDMS with low viscosity that can be used for vitreous humous substitution in vitreoretinal surgery. PDMS samples with low viscosity value of 0.94-1.35 Pa.s have been successfully synthesized from low grade of D4 and MM using ring-opening polymerization method. The yields of PDMS resulted in this research were in the range between 67.27% and 76.26%. From FTIR spectroscopy, it is found that all synthesized samples have structure and functional groups similar to PDMS using high grade of monomer of 98% Octamethylcyclotetrasiloxane (D4). From refractometer and surfgauge measurements, all samples have refractive index in the range of 1,4034-1,4040 and the value surface tension was 21 m.N/m.

scholarly journals The study of the movement of a piece on the camera crushing in network type bases as applied to the workflow of the FCC

2020 ◽  
Vol 177 ◽  
pp. 03011
Author(s):  
Yuliya Lagunova ◽  
Victor Shestakov ◽  
Nazira Ibrayeva
Keyword(s):  
Raw Materials ◽  
Main Aspect ◽  
Working Process ◽  
Work Process ◽  
Solid Materials ◽  
Subsequent Decrease ◽  
Cone Crusher ◽  
Software Modelling ◽  
Basic Characteristics ◽  
Network Type

The paper considers a software-modelling structure for solving the problem of crushing of solid materials, mountain mineral raw materials of different strength and composition. The task is to study the movement of a piece along the crushing chamber of a cone crusher, the stages of destruction of pieces are considered. Setting the main parameters of the FCC, the working process of the crusher and the parameters of the destruction of pieces in the crushing chamber. The study of the basic characteristics of the movement process, the interaction and destruction of pieces is the main aspect of the work process. More precisely, the issues were examined, on the basis of which the dependencies were compiled, which are used in the algorithm of the model of the working process of FCC at the beginning of the cycle of the mode of movement. One of the processes considered in the article is squeezing a piece between the armors with a subsequent decrease in the distance between the armors.

Performance Study of Fiber Reinforced New Lightweight Insulation Materials

2013 ◽  
Vol 662 ◽  
pp. 331-334
Author(s):  
Huan Qi Zhao ◽  
Guo Zhong Li
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Bending Strength ◽  
Raw Materials ◽  
The Self ◽  
Performance Study ◽  
Foaming Agent ◽  
Insulation Materials ◽  
Influencing Mechanism ◽  
Coefficient Of Thermal Conductivity

Cement-based lightweight insulation materials were made. Cement and fly ash are main raw materials. The self-developed composite excitation agent and foaming agent are used. The method of foaming is the physical foaming. The inflection of fiber dosage on the performance of lightweight insulation materials was researched. Its influencing mechanism was discussed. Experiments show that foaming lightweight insulation materials were made with 1.22MPa bending strength, 2.95MPa compressive strength and the 0.072W/mk coefficient of thermal conductivity when the fiber mixing content is 1.2%.

CARBON AND FUEL FROM RUBBER WASTE

2020 ◽  
pp. 103-108
Author(s):  
Gennadi I. Zhuravsky ◽  
Maksim I. Nitievski
Keyword(s):  
Zinc Oxide ◽  
Water Vapor ◽  
Raw Materials ◽  
Liquid Waste ◽  
Raw Material ◽  
High Grade ◽  
High Quality ◽  
Technical Carbon ◽  
Rubber Waste ◽  
Composite Mixture

The results of studies of thermolysis waste in the environment of overheated water vapor are presented. It is shown that as a result of fractionation from liquid waste thermolysis products, gasoline and diesel fuel fractions can be obtained. It is proposed to use a composite mixture of liquid and solid waste thermolysis products as raw materials for high-grade technical carbon. Studies have shown that high-grade technical carbon can be obtained as raw materials using a composite mixture of rubber waste thermolysis products as raw materials. The technological line of obtaining technical carbon from the products of thermolysis of worn tires is described. Analysis of the ash produced by the process of burning the composite mixture shows that it contains compounds of iron, zinc and silicon. Therefore, this ash is of interest as a high-quality raw material for the production of zinc oxide, as one of the main ingredients of rubber mixtures.

Sulfate Removal from Water

2003 ◽  
Vol 38 (1) ◽  
pp. 169-182 ◽  
Author(s):  
Ashref Darbi ◽  
Thiruvenkatachari Viraraghavan ◽  
Yee-Chung Jin ◽  
Larry Braul ◽  
Darrell Corkal
Keyword(s):  
Drinking Water ◽  
Ion Exchange ◽  
Experimental Work ◽  
Total Dissolved Solids ◽  
Laboratory Studies ◽  
Sulfate Ion ◽  
No Removal ◽  
Sulfate Removal ◽  
High Sulfate ◽  
Production Industry

Abstract Sulfate occurs naturally in groundwater. Concerns regarding the health effects from sulfate in drinking water have been raised because of reports that diarrhea may be associated with water that contains high levels of sulfate. In the livestock production industry, there is a concern that high levels of sulfate in water can adversely affect productivity. Different methods can be used to remove sulfate from water. Proven technologies are ion-exchange, nanofiltration, reverse osmosis, and electrodialysis. A few earlier studies have shown that the use of bentonite/kaolinite for sulfate removal has produced encouraging results. Experimental work was undertaken to examine in detail the feasibility of such processes. Laboratory studies using bentonite showed poor or no removal in the case of high sulfate water. Ion exchange and nanofiltration were found to be very effective in removing sulfate. Ion exchange is likely to be more reliable than nanofiltration because of the sensitivity of the nanofiltration process to total dissolved solids and biofouling.

The Design of Melting Units for Production of Synthetic Fibrous Materials by Vertical Blowing Method from PET Raw Materials

2019 ◽  
Vol 952 ◽  
pp. 216-222
Author(s):  
Vladislav Sviatskii ◽  
Andrea Mudriková ◽  
Radovan Holubek ◽  
Jakub Horník ◽  
Mikhail Sokolov
Keyword(s):  
High Performance ◽  
Raw Materials ◽  
Pressure Change ◽  
Material Surface ◽  
Fibrous Materials ◽  
Cylindrical Chamber ◽  
Molten Material ◽  
Operating Modes ◽  
Technology Of Production ◽  
Process Productivity

This paper presents the technology of production of synthetic fibrous materials from PET-raw by vertical blowing method. The formation of fibers from the melt of thermoplastics by vertical blowing method is accompanied by complex and specific phenomena, so creation of new progressive technologies, high-performance machines and units for producing such materials is impossible without process modeling, which can significantly reduce the number of natural tests, cost and development time and choose optimal operating modes. The motion of the molten material in the melting unit of the hydrostatic type is determined from the Poiseuille formula. Also in the article proved that the greatest impact on process productivity is made by the melting unit, exactly by outlet radius and the pressure change of compressed air, acting on the molten material surface. The increase in the height of the molten material column in the main cylindrical chamber of melting unit also leads to increase of process productivity.

ECONOMIC PREREQUISITES FOR THE FORMATION OF OPTIMAL SUGAR MILLS RAW ZONES OF THE OREL REGION

2020 ◽  
Vol 5 (86) ◽  
pp. 123-129
Author(s):  
E.Yu. Kalinicheva ◽  
◽  
M.N. Uvarova ◽  
L.N. Zhilina ◽  
◽  
...  
Keyword(s):  
Sugar Beet ◽  
Production Efficiency ◽  
Agricultural Sector ◽  
Raw Materials ◽  
Sugar Content ◽  
Specific Weight ◽  
Raw Material ◽  
Sugar Beets ◽  
Sugar Mills ◽  
Sown Area

The article justified the necessity of developing a strategy for the improvement of the sugar beet subcomplex of the region on the base of the determination of the close relationship between beet-growing farms, enterprises engaged in the delivery, processing and sale of manufactured products. According to the authors, the optimization of the raw material zone should include the principle of maximum loading of sugar mills, taking into account the raw materials produced in the region, optimizing transport costs for its delivery. The analysis of the sown area, productivity and gross yield of sugar beets gives us the idea that the region takes the tenth place among the largest producers of sugar beets. The yield and gross yield in 2019 in agricultural enterprises amounted to 459.6 centner / ha, 2231.9 thousand centner (an increase of 13.6% and 9.4% compared to the level of 2018).For P(F)E, the average increase is 40%, which corresponds to 481 centner / ha, 18.3 thousand tons. The average sugar content of beets during acceptance and processing ranges from 17.96 to 18.3%, the sugar yield is 15.63%, the sugar content in molasses is 1.68%, and the average daily productivity is 16.11 thousand ton / day, loss in production is 1.27%. The authors found that the production efficiency of the sugar beet industry is directly connected with the growth of labor productivity, the introduction of modern technologies, cost reduction, and thus, each farm has the opportunity to get additional profit. One of the main problems in the agricultural sector of the economy is the use of available resources to obtain the largest number of products. In our opinion, the production efficiency of sugar mills is closely interconnected with the constructed logistics routes for the transportation of raw materials with the exception of repeated shipments, the proportion of sugar beets in the sown area, and the reliability of suppliers. In our opinion, the efficiency of sugar mills production is in close connection with the built of the logistic routes for transportation of raw materials with the exception of repeated transportation, the specific weight of sugar beet in the structure of the sown area and the reliability ensuring of suppliers. The problem of the effective development of the sugar industry is relevant and priority in solving regional policies, the implementation of which will not only eliminate the emerging imbalances and reduce imports, but also support the domestic producer.

scholarly journals Issues of increasing the effectiveness of beet and rawsugar subcomplexes in terms of environmental protection

2021 ◽  
Vol 37 ◽  
pp. 00113
Author(s):  
Ivan Saltyk ◽  
Lyudmila Malysheva ◽  
Olga Tsukanova ◽  
Galina Karpova
Keyword(s):  
Environmental Protection ◽  
Raw Materials ◽  
New Product ◽  
Resource Saving ◽  
Product Lines ◽  
Sugar Beets ◽  
Raw Sugar ◽  
Harmful Effects ◽  
Soil And Water ◽  
Comprehensive Processing

The article discusses the issues of increasing the effectiveness of the functioning of beet and raw sugar subcomplexes in terms of environmental protection. The main areas of scientific and technical progress aimed at increasing the profitability of the production of sugar beets, sugar cane and sugar as a final product at these subcomplexes as well as reducing harmful effects of their growing andproduction processeson the atmosphere, soil, and water bodies have been identified. The authors consider the development of new product lines and machines in accordance with the system of machines for sugar factories, modernization of existing and development of new trailed beet and cane harvesting machines; resource saving: intensification of the use and processing of beet and cane raw materials, ensuring a minimum amount of waste and its comprehensive processing; problems of greening associated with the work of sugar factories.

scholarly journals The role of musical and aesthetic activity in the development of creative abilities of children with visual impairments

2020 ◽  
Vol 9 (28) ◽  
pp. 199-210
Author(s):  
Irina Aryabkina ◽  
Galina Tenyukova ◽  
Marina Karnaukhova ◽  
Elena Khrisanova ◽  
Olga Murzina ◽  
...  
Keyword(s):  
Experimental Work ◽  
Visually Impaired ◽  
Research Problem ◽  
Practical Experience ◽  
Problem Analysis ◽  
Hearing Impairments ◽  
Performance Study ◽  
Creative Abilities ◽  
Impaired Children ◽  
Visually Impaired Children

A retrospective analysis of psychological and pedagogical literature and practical experience in the field of education allows us to state the fact that music development, musical lessons and aesthetic activity have a great positive effect on the development of the personality of children with hearing impairments. At the same time, the insufficient development of the methodology and methods for the development of musical and creative abilities of visually impaired children in order to correct their physical and moral development gives the reason to consider this problem to be quite relevant and timely. Some aspects of solving this problem are disclosed in this article. The purpose of this article of ours is to disclose the essence and content of the concept of “musical and creative abilities”; analysis of the psychophysiological characteristics of visually impaired children in the context of the development of their musical and creative abilities; characteristics of the content and forms of musical education of visually impaired children in order to develop creative abilities and the results of the experimental work of the authors in this direction. Theoretical and empirical research methods were used to solve the stated tasks: analysis of the musical, pedagogical and psychological literature on the research problem; analysis of pupil performance; study, analysis and generalization of advanced pedagogical experience on the stated problem, pedagogical observation, questionnaire, survey, conversation. The article contains a description of the results of the implementation in the process of experimental work of the pedagogical conditions that we have identified that contribute to improving the development of creative abilities in visually impaired children. The data obtained allow us to conclude that, after conducting experimental work, the indicators improved according to all the criteria we identified for the successful development of creative abilities in visually impaired children.

scholarly journals Recycling of Cullet, Waste Clay Bricks and Wastes Resulted from Wheat and Sugarcane Cultivations in the Manufacture of Fired Clay Bricks

2021 ◽  
Vol 17 ◽  
pp. 192-200
Author(s):  
M. H. Roushdy
Keyword(s):  
Experimental Work ◽  
Environmental Problem ◽  
Raw Materials ◽  
Sieve Analysis ◽  
Agricultural Residue ◽  
Soaking Time ◽  
Clay Bricks ◽  
The Third ◽  
Dry Pressing ◽  
Agriculture Wastes

The agriculture wastes are considered as a big environmental problem. The main purpose of this research is to determine the possibility of producing fired clay bricks from a mixture of agriculture wastes in addition to other wastes. The first type of wastes is the cullet while the second type is the wastes is the waste clay bricks (Homra) and the third is an agricultural residue obtained from wheat and sugarcane cultivation. The first step of the experimental work is performing XRF and sieve analysis for raw materials. Brick samples with Cubic shape with dimensions 50 × 50 × 50 mm3 were formed by 1 MPa dry pressing then drying at 120 oC overnight. Tile samples were fired at temperatures of 850 oC for 15 min soaking time. Water absorption, apparent porosity, and mechanical properties were determined and compared to ES 4763 / 2006 and ASTM C 62 / 2013 standards. According to the previous experimental work, it was found that the samples that has a composition (38 % Desert clay, 20% Homra, 10% cullet, 15% Wheat ash straw, 17% sugarcane) has the optimum properties with respect to ES 4763 / 2006 and ASTM C 62 / 2013 standards.

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