scholarly journals Removal of Residual Element Tin in the Ferrous Metallurgy Process: A Review

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 834 ◽  
Author(s):  
Zhang ◽  
Ma ◽  
Liu ◽  
Li
Keyword(s):  
Ferrous Metallurgy ◽  
Continuous Improvement ◽  
Iron Ore ◽  
Smelting Process ◽  
High Quality ◽  
Continuous Increase ◽  
Tin Content ◽  
Tin Removal ◽  
Metallurgy Process

With the continuous improvement of the quality of steel for social development, high-quality iron ore resources have been gradually depleted. Meanwhile, the scrap steel reserve and recycling volume are gradually increasing, which will result in the continuous increase of the residual tin content in steel, which seriously restricts the improvement of steel quality and the circulation-utilization of scrap. Therefore, it is necessary to remove as much tin as possible in the ferrous metallurgy process. However, tin in steel cannot be effectively removed in the conventional smelting process. In this paper, the origination, the existing forms, and the content control levels of the residual tin in steel are presented, as well as the current processes of tin removal in the ferrous metallurgy process.

scholarly journals LA AUTOEVALUACIÓN CON MIRAS A LA MEJORA CONTINUA: LA EXPERIENCIA DE LA CARRERA DE ENSEÑANZA DEL INGLÉS PARA I Y II CICLOS DE LA UNED. SELF-EVALUATION AS A MEANS OF CONTINUOUS IMPROVEMENT: THE EXPERIENCE OF UNED’S MAJOR: ENGLISH TEACHING FOR ELEMENTARY SCH

2013 ◽  
Vol 4 (2) ◽  
pp. 184-206
Author(s):  
Yinnia Mora-Ordoñez
Keyword(s):  
Continuous Improvement ◽  
Evaluation Process ◽  
Quality Of Education ◽  
State University ◽  
Teaching English ◽  
High Quality ◽  
Self Evaluation ◽  
Improvement Plan ◽  
Major Teaching

El presente trabajo tiene como propósito compartir las experiencias vividas por la carrera de Enseñanza del Inglés para I y II ciclos de la Universidad Estatal a Distancia en los dos procesos de autoevaluación llevados a cabo. El primer proceso se realizó del 2003 al 2005. Del mismo surgió un plan de mejoramiento que culminó con el rediseño del nivel de diplomado y bachillerato y el diseño de la licenciatura. El segundo proceso se ejecutó del 2011 al 2013. De este segundo proceso surgió un informe de autoevaluación con fines de acreditación que fue presentado ante el SINAES en abril de 2013. Además, se diseñó un compromiso de mejoramiento que pretende mantener la carrera actualizada y con un alto nivel de calidad.Palabras clave: autoevaluación, acreditación, calidad de la educación, mejora continuaAbstractThis paper’s aim is to share experiences of two self-evaluation processes developed by Distance State University in Costa Rica for the major: Teaching English to Elementary Students. The first self-evaluation process was developed from 2003 to 2005. From the analysis of the collected data, an improvement plan was developed with the main achievement being the redesign of the diplomado and bachelor levels and the design of a new level: Licenciatura. The second self-evaluation process was implemented from 2011 to 2013. From this second process, an evaluation report for accreditation was presented to SINAES in April, 2013. In conjunction with this report, a strategy for continuous improvement was designed with the purpose of guaranteeing high quality education.Keywords: Self-evaluation, Accreditation, Quality of Education, Continuous Improvement.

Early Complexes of the Tract “First and Second Island” near the Village of Tanatovо

2020 ◽  
Vol 7 (4 (28)) ◽  
pp. 131-139
Author(s):  
Sergei F. Tataurov ◽  
Irina V. Tolpeko
Keyword(s):  
Bronze Age ◽  
Iron Ore ◽  
Raw Materials ◽  
Stone Tools ◽  
Early Bronze Age ◽  
Late Neolithic ◽  
High Quality ◽  
The Impact ◽  
The Village

As part of the study of the early stages of settlement of the Middle Irtysh region, the multilayered monuments of the tract “First and Second island” near the village of Tanatovо, Muromtsevsky district of Omsk region. Based on the study of ceramics and stone tools, complexes of the late Neolithic - early bronze age belonging to the artyn and Catherine cultures and the Stepanov type of monuments were identified. Specific features of stone processing are described for each stage. Artyn stone processing was characterized by high-quality raw materials and the technique of chipping plates. At the stage of Catherine's culture, the quality of raw materials significantly deteriorates, and the use of local raw materials (swamp iron ore) is noted. In stone processing, there is an increase in the share the technique of chipping flakes. At all stages, the tendency to minimize the impact of the shortage of stone raw materials is well recorded.

scholarly journals CO2 Utilization in the Ironmaking and Steelmaking Process

2018 ◽  
Author(s):  
Kai Dong ◽  
Xueliang Wang
Keyword(s):  
Stainless Steel ◽  
Blast Furnace ◽  
Continuous Casting ◽  
Ferrous Metallurgy ◽  
Research Progress ◽  
Smelting Process ◽  
Steelmaking Process ◽  
Co2 Utilization ◽  
Bottom Blowing ◽  
Metallurgy Process

A overview on application of CO2 in the ironmaking and steelmaking process is presented. Study on resource utilization of CO2 is significant for the reduction of CO2 emissions and the coping with global warming. The paper introduces the research progress of CO2 utilization in the sintering, Blast Furnace, Converter, secondary refining, Continuous Casting and smelting process of stainless steel in recent years in China. According to the foreign and domestic research and application status, the paper analyzes the feasibility and metallurgical effects of the CO2 utilization in the ferrous metallurgy process. The paper mainly introduces such new techniques as 1) flue gas circulating sintering, 2) blowing CO2 through Blast Furnace tuyere and CO2 as a pulverized coal carrier gas, 3) top and bottom blowing CO2 in the converter, 4) Ladle Furnace and Electric Arc Furnace bottom blowing CO2, 5) CO2 as Continuous Casting shielding gas, 6) CO2 for stainless steel smelting, and 7) CO2 circulation combustion. CO2 has a very wide application prospect in ferrous metallurgy process and the quantity of CO2 utilization is expected to be 100kg per ton of steel. It will effectively facilitate the progress of metallurgical technology and strongly promote the energy conservation of metallurgical industry.

Quality and Continuous Improvement in Knowledge Management

2010 ◽  
pp. 353-363
Author(s):  
Nicole M. Radziwill ◽  
Ronald F. DuPlain
Keyword(s):  
Knowledge Management ◽  
Knowledge Transfer ◽  
Continuous Improvement ◽  
Management System ◽  
Business Processes ◽  
Knowledge Management System ◽  
High Quality ◽  
Sociotechnical System ◽  
Continuous Improvement Process

Knowledge management requires people to synthesize and interpret information, and technologies to organize, make sense of, and draw conclusions from the collection of knowledge. Together, these people and technologies shape part of a sociotechnical system. The relationships between them make the sociotechnical system behave as a network, where communication and knowledge transfer can occur, and the network becomes a community once elements of the system interact in meaningful ways. The quality of a knowledge management system depends on how well these meaningful exchanges are promoted and cultivated. This chapter examines how to construct a high-quality knowledge management system, taking into consideration the challenging sociotechnical nature of such an effort. By relating the four stages of a continuous improvement process, the five measures of quality within a knowledge management system, and EASE (Expectations, Actionability, Sustainability, and Evaluation), we present an approach to examine the business processes associated with knowledge management. Managers can use this framework to assess the quality of knowledge management systems and formulate strategies for continually improving them.

Influence of technology parameters of free-cutting steel continuous casting on the billet internal structure

2020 ◽  
Vol 76 (2) ◽  
pp. 139-142
Author(s):  
A. T. Kunakbaeva ◽  
A. M. Stolyarov ◽  
M. V. Potapova
Keyword(s):  
Regression Analysis ◽  
Continuous Casting ◽  
Internal Structure ◽  
Sulfur Content ◽  
Manganese Content ◽  
High Quality ◽  
Correlation And Regression Analysis ◽  
Cutting Steel ◽  
Continuously Cast

Free-cutting steel gains specific working properties thanks to the high content of sulfur and phosphorus. These elements, especially sulfur, have a rather high tendency to segregation. Therefore, segregation defects in free-cutting steel continuously cast billets can be significantly developed. The aim of the work was to study the influence of the chemical composition of freecutting steel and casting technological parameters on the quality of the macrostructure of continuously cast billets. A metallographic assessment of the internal structure of cast metal made of free-cutting steel and data processing by application of correlation and regression analysis were the research methods. The array of production data of 43 heats of free-cutting steel of grade A12 was studied. Steel casting on a five-strand radial type continuous casting machine was carried out by various methods of metal pouring from tundish into the molds. Metal of 19 heats was poured with an open stream, and 24 heats – by a closed stream through submerged nozzles with a vertical hole. High-quality billets had a cross-sectional size of 150×150 mm. The macrostructure of high-quality square billets made of free-cutting steel of A12 grade is characterized by the presence of central porosity, axial segregation and peripheral point contamination, the degree of development of which was in the range from 1.5 to 2.0 points, segregation cracks and strips – about 1.0 points. In the course of casting with an open stream, almost all of these defects are more developed comparing with the casting by a closed stream. As a result of correlation and regression analysis, linear dependences of the development degree of segregation cracks and strips both axial and angular on the sulfur content in steel and on the ratio of manganese content to sulfur content were established. The degree of these defects development increases with growing of sulfur content in steel of A12 grade. These defects had especially strong development when sulfur content in steel was of more than 0.10%. To improve the quality of cast metal, it is necessary to have the ratio of the manganese content to the sulfur content in the metal more than eight.

Experience of clinical testing of personal telemedicine system ‘Obereg’ for remote monitoring of patients in intensive care units

2020 ◽  
pp. 52-58 ◽  
Author(s):  
A. A. Eryomenko ◽  
N. V. Rostunova ◽  
S. A. Budagyan ◽  
V. V. Stets
Keyword(s):  
Intensive Care ◽  
Intensive Care Units ◽  
Remote Monitoring ◽  
Clinical Testing ◽  
Transportation Of Patients ◽  
High Quality ◽  
Telemedicine System ◽  
Accuracy Of Measurements ◽  
Hospital Equipment

The experience of clinical testing of the personal telemedicine system ‘Obereg’ for remote monitoring of patients at the intensive care units of leading Russian clinics is described. The high quality of communication with the remote receiving devices of doctors, the accuracy of measurements, resistance to interference from various hospital equipment and the absence of its own impact on such equipment were confirmed. There are significant advantages compared to stationary patient monitors, in particular, for intra and out-of-hospital transportation of patients.

METHODOLOGICAL ASPECTS OF VISUALIZATION OF CORONARY ARTERIES WITH TRANSTHORACIC ECHOCARDIOGRAPHY

2018 ◽  
pp. 26-35
Author(s):  
Z. A. Agaeva ◽  
K. B. Baghdasaryan
Keyword(s):  
Blood Flow ◽  
Coronary Blood Flow ◽  
Coronary Arteries ◽  
Transthoracic Echocardiography ◽  
Second Harmonic ◽  
Anatomic Reconstruction ◽  
High Quality ◽  
Acoustic Window ◽  
Methodological Aspects

The transthoracic echocardiography made by multifrequency probes with support of the mode of the second harmonic imaging, is a competitive method for visualization of the main coronary arteries and allows to estimate coronary blood flow with high quality. Of course, the method has considerable restrictions, most important of which is the low spatial resolution of a method, due to small acoustic window. Because of this the transthoracic visualization of coronary arteries perhaps will not become the leading method of anatomic reconstruction of separately taken coronary artery and especially all coronary arteries system. However uniqueness and indisputable advantage of this method is an opportunity to noninvasively estimate a coronary blood flow both once, and in dynamics.

Estimates on poverty in Russia and the additional measures to reduce it at the regional level

2020 ◽  
Vol 18 (4) ◽  
pp. 739-752 ◽  
Author(s):  
R.M. Sadykov
Keyword(s):  
Poverty Rate ◽  
Regional Level ◽  
Living Standards ◽  
Standard Of Living ◽  
High Quality ◽  
Social Standard ◽  
Republic Of Bashkortostan ◽  
The Republic ◽  
Sociological Studies

Subject. This article deals with the issues of social justice and a high quality of life, creating favorable economic and social conditions. Objectives. The article aims to assess the rate and changes in poverty in Russia and the Republic of Bashkortostan and develop complementary measures to reduce it. Methods. For the study, I used the methods of logical, comparative, economic and statistical analyses, the results of sociological studies, and official statistics. Results. The article highlights additional measures to reduce poverty in the region, including the establishment of a minimum social standard of living in each particular region that determines the poverty rate. Conclusions. Various factors, such as economic sanctions, economic slowdowns, territorial and regional imbalances, lead to living standards decline and poverty rise.

SCIENTIFIC BASIS OF POSTGRADUATE TRAINING FOR OFFICER WORKING ETHNIC AFFAIRS USING STATE BUDGET IN THE PERIOD OF 2018 – 2025

2017 ◽  
Author(s):  
La Duc Minh ◽  
Nguyen Thi Hao ◽  
Vu Thi Thuy
Keyword(s):  
Economic Development ◽  
Ethnic Groups ◽  
Human Resource ◽  
Postgraduate Training ◽  
Scientific Basis ◽  
National Defense ◽  
High Quality ◽  
State Budget ◽  
International Integration

Ethnic affairs play an important role in socio of ethnic groups’ solidarity, assurance of security and national defense stability. In -economic development, maintenanceorder to improve the quality of ethnic affairs, it is practical to carry out postgraduate training of officer implementing ethnic affairs using state budget with the aim of encouraging and enhancing officer quality to satisfy high-quality human resource in international integration.

Удобрение перца сладкого

2018 ◽  
Author(s):  
V.A. Borisov ◽  
A.M. Menshikh ◽  
V.S. Sosnov ◽  
G.F. Monakhos
Keyword(s):  
Drip Irrigation ◽  
Sweet Pepper ◽  
Water Soluble ◽  
Mineral Fertilizers ◽  
High Quality ◽  
Organic Mineral ◽  
Soluble Fertilizer

Показано действие минеральных удобрений, микрокристаллического комплексного водорастворимого удобрения «Мастер» и органоминерального наноудобрения с ростостимулирующей активностью «Арксойл» при капельном орошении на урожайность и качество сладкого перца нового гибрида F1 Темп. Сочетание основного удобрения с листовой и корневой подкормками позволяет получить до 65 т/га плодов перца высокого качества.The action of mineral fertilizers, microcrystalline complex water soluble fertilizer Master and organic mineral nano-fertilizer with growth-stimulating activity Arksoil under drip irrigation on the productivity and quality of sweet pepper of the new hybrid F1 Temp is shown. The combination of basic fertilizer with leaf and root fertilizing allows to obtain up to 65 t/ha of pepper fruits of high quality.

Sign in / Sign up

Export Citation Format

Share Document