scholarly journals Studies of Conventional and New Technologies for Preparation of Iron Ore Raw Materials at Iron Making Plant of Pao Severstal to Evaluate Prospectives for Reduction of Ecological Load on Environment

2020 ◽  
Author(s):  
T.V. Detkova ◽  
A.A. Kalko ◽  
A.A. Eliseev
Keyword(s):  
Iron Ore ◽  
New Technologies ◽  
Raw Materials ◽  
Chemical Processes ◽  
Recycled Materials ◽  
Waste Products ◽  
Technological Processes ◽  
Sinter Strength ◽  
Recycled Waste ◽  
Qualitative Characteristics

The experts of Centre for Raw Materials Investigations (CRMI) have conducted research into the usage of recycled materials in the following technological processes: sintering and briquetting. Research shows variation in emissions containing sinter gases and qualitative characteristics of the finished product (cold and hot sinter strength). It is suggested that involvement of recycled waste products of steelmaking and chemical processes shall be increased using the method of vacuum extrusion. Keywords: sintering, recycled materials, sinter gas, briquettes

scholarly journals The use of recycled waste products in a sustainable house design - a case study

2018 ◽  
Vol 196 ◽  
pp. 04051
Author(s):  
Agnes Iringová
Keyword(s):  
Physical Parameters ◽  
Renewable Materials ◽  
Recycled Materials ◽  
Waste Products ◽  
Current State ◽  
Waste Production ◽  
House Design ◽  
Family House ◽  
Recycled Waste

The current state of waste production and management in Slovakia. Legislative regulations. Analysis of applying recycled waste products in the construction of sustainable buildings as a substitution of non-renewable materials. The comparison of the physical parameters of recycled materials with non-renewable materials in terms of thermal and fire protection. The construction solution of lightweight building envelopes with a timber supporting system using the thermal insulation and facing made of recycled materials. The model solution of a wood-based family house using recycled waste materials. The comparison of the environmental burden of a standard lightweight sandwich peripheral wall with a recycled waste wall.

scholarly journals Promising deposits of complex iron ore raw materials of Urals and its processing new technologies

2018 ◽  
Vol 56 ◽  
pp. 03002
Author(s):  
Sergei Kornilkov ◽  
Andrei Dmitriev ◽  
Aleksei Pelevin
Keyword(s):  
Iron Ore ◽  
New Technologies ◽  
Raw Materials ◽  
Pyrometallurgical Processing ◽  
Degree Of Extraction ◽  
Titanium Vanadium

There have been provided general geological and metallurgical characteristics of some complex iron ore raw materials of Urals, which contain not only iron but also titanium, vanadium, chrome, and nickel. There has been provided the description of such deposits. It is shown that the degree of extraction of certain products is determined by the choice of extraction, benefication, pyrometallurgical processing procedures.

Beautiful renewable energy

Impact ◽  
2019 ◽  
Vol 2019 (10) ◽  
pp. 39-41
Author(s):  
Hinako Kawakami ◽  
Yasumitsu Matsuo
Keyword(s):  
Fuel Cell ◽  
Global Economy ◽  
Fossil Fuels ◽  
New Technologies ◽  
Raw Materials ◽  
Waste Products ◽  
Sustainable Resources ◽  
Green Architecture ◽  
Working Together

As the world's consumption of non-renewable fuels continues to grow, so do the associated problems. Coal, gas and nuclear are all on the rise with each presenting significant environmental problems. The fossil fuels contribute to global warming through CO2 emissions as well as polluting the environment through particulates and waste products. Nuclear energy, whilst cleaner, still produces significant and long-term dangerous waste products. In addition, the raw materials are finite and will be exhausted sometime this century. The battle to develop effective clean alternatives is one of the key fights that will come to define the 21st century. The process will require considerable innovation and greater effort by business and state to improve the situation. Many researchers are working towards a myriad of different solutions that, together, could form the basis for re-gearing the global economy towards the use of renewable and sustainable resources and fuels. One such alternative is the fuel cell and variations of this. A fuel cell harnesses the energy released when hydrogen combines with oxygen to form water to produce electricity. Its inputs are cheap and readily available whilst its outputs are completely clean. In order to effectively assimilate new technologies such as these, it is necessary to consider how this technology can be applied and integrated into modern life. Doing so will allow new technologies to be adopted and employed far quicker after development. Two researchers from Setsunan University, Japan are working together to make cheap and renewable fuel cells that can be integrated directly into new, green architecture.

scholarly journals METHOD OF DISCRETENESS SUBSTANTIATION OF QUALITATIVE CHARACTERISTICS TESTING DURING IRON ORE RAW MATERIALS EXTRACTION

2021 ◽  
Vol 2 (1) ◽  
pp. 3-10
Author(s):  
Volodymyr Azarian ◽  
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Quality Characteristics ◽  
Test Period ◽  
Valuable Component ◽  
Flow Formation ◽  
Technical Control ◽  
Component Content ◽  
Definition Of ◽  
Qualitative Characteristics

The article aims to substantiate the periodicity of the definition of the maintenance of a valuable component in faces. Information about the content of the valuable component is necessary to comply with the requirements of the enrichment complex while ensuring the process of the total cargo flow formation. Traditionally, in iron ore quarries, technical control services measure the content of the valuable component every shift, but the testing period requires determination. We aimed to justify the period of testing the quality characteristics of iron ore. To achieve the aim, we explored the quarry № 3 of the PJSC "ArcelorMittal Kryvyi Rih" Mining Department based on the provisions of the mining theory and using mathematical modelling and mathematical statistics methods. We developed a method of substantiating the period of testing the qualitative characteristics of the faces, which we checked based on data from the existing enterprise. Using our method, we proved the possibility of increasing the test period without losing the necessary information about the iron content and without reducing the quality characteristics of the formed final ore flow. Increasing the test period will help companies decrease costs by reducing the number of visits of technical control specialists to test the quarry face. The proposed technique can be helpful to any mining company that supports the data collection and maintain the statistical database of measurements of the valuable component content

Recycling of Florescent Phosphor Powder Y2O3:Eu by Leaching Experiments

2017 ◽  
Vol 262 ◽  
pp. 596-600
Author(s):  
Romy Auerbach ◽  
Katrin Bokelmann ◽  
Stefan Ratering ◽  
Rudolf Stauber ◽  
Sylvia Schnell ◽  
...  
Keyword(s):  
New Technologies ◽  
Raw Materials ◽  
Waste Products ◽  
Chemical Leaching ◽  
Process Waste ◽  
Biosorption Process ◽  
The Future ◽  
Abiotic Control ◽  
Leaching Experiments ◽  
Fe Addition

Due to the advancing development of new technologies and consumer goods the future demand for raw materials will rise significantly. The finite primary raw materials will not be able to meet the demand quickly enough or the prices for the extraction will rise enormously. In consequence, a recycling of process waste and end of life products will be in future an essential step in order to meet the demand. Y2O3:Eu fluorescent phosphor was identified as the main composition in phosphor waste fractions and was chemical leached and bioleached with A. ferrooxidans. A selective leaching towards Y in bioleaching batches was observed and already after four days 100 % could be leached. The bioleaching with the bacteria showed no significant differences in comparison to the abiotic control without microorganism. Initial Fe3+ in the medium was identified as the driving force and lower extraction efficiencies of the biotic batches were attributed to a biosorption process and to high pH-values. This work showed that the extraction of yttrium out of waste products with high Y2O3:Eu content by chemical leaching with Fe-addition under mild conditions offers a good perspective to support the material demand of Y in the future growing market. In comparison to bioleaching of other fluorescent phosphors and waste fractions leaching efficiencies up to 100% were achieved and it was identified that the microorganisms can positively influence the leaching effect. Furthermore, it became obvious that the leaching behavior of microorganisms was highly dependent on the sample material. As relevant parameters mainly the structural composition of the phosphor was identified.

scholarly journals Designing Architecture Blockchain of Hyperledger Fabric for Purchasing Strategy

2021 ◽  
Vol 10 (2) ◽  
pp. 464-468
Keyword(s):  
Data Security ◽  
Raw Materials ◽  
Transaction Processing ◽  
Third Party ◽  
Waste Products ◽  
Technical Problems ◽  
Blockchain Technology ◽  
Fabric Design ◽  
Access Data ◽  
Recycled Waste

Hyperledger Fabric refers to a blockchain technology regulated by the Linux Foundation, which implements a blockchain network, namely the permission blockchain. The network provides a membership service concept, which means that only certain parties can transact and access data. This research will show the blockchain architecture design of the hyperledger fabric, which is designed for the purchasing strategy of recycled waste products. The design will be used to make purchases for managing distributors in buying recycled waste products from waste banks as raw materials to be processed. The traditional purchasing process using the bank as a third party will take longer and will be more expensive. Therefore, this research aims to improve data security and transparency between the authorities and direct the payment process in an instant and dramatically reduce transaction costs. Besides, this design can also be applied to any e-commerce. The method used is blockchain, which focuses on hyperledger fabric design. The position on the hyperledger fabric is only applied to the transaction processing of the hyperledger fabric. This study's results apply a design to a blockchain system using a hyperledger fabric to overcome several technical problems related to blockchains such as throughput, scalability, and interoperability and contribute to purchasing strategies.

scholarly journals The physicochemical bases of the pyrometallurgical processing of the titanomagnetite ores

2017 ◽  
Vol 89 (10) ◽  
pp. 1543-1551 ◽  
Author(s):  
A. N. Dmitriev ◽  
G. Yu. Vitkina ◽  
R. V. Petukhov
Keyword(s):  
Experimental Study ◽  
Blast Furnace ◽  
Coke Consumption ◽  
Iron Ore ◽  
Raw Materials ◽  
Blast Furnace Smelting ◽  
Melting Temperatures ◽  
Pyrometallurgical Processing ◽  
Qualitative Characteristics ◽  
Furnace Smelting

AbstractThe questions of an experimental study on the qualitative characteristics of iron ore raw materials (durability, reducibility, softening and melting temperatures) and their influence on indicators of blast furnace smelting (coke consumption and productivity) are considered.

Parameters Of Technological Processes Reengineering

2020 ◽  
pp. 28-33
Keyword(s):  
Spatial Organization ◽  
Parametric Model ◽  
Practical Significance ◽  
Machine Time ◽  
Time Machine ◽  
Technological Processes ◽  
Technical Capability ◽  
Materials Used ◽  
The Cost ◽  
Qualitative Characteristics

The article is devoted to reengineering of technological processes - a method of their qualitative transformation on an innovative basis, which in turn assumes the availability of tools that make it possible to establish the economic efficiency and technical capability of such transformations of construction production, to identify the effect of their implementation. In this regard, the problem of forming a parametric model of reengineering of construction technological processes, which involves four enlarged groups of indicators that reflect the quantitative and qualitative characteristics of the processes: materials used, working time, machine time, spatial organization, is considered. It is established that parameters can have either an absolute (physical, cost) or relative (point, percentage) expression and also make their own decomposition. The practical significance of the provisions given in the article is determined by the development of methods of technical rationing, which leads to a reduction in the cost and duration of construction.

METHODOLOGICAL APPROACHES TO SEARCH FOR RESERVES OF DECREASING COSTS IN THE BRANCHES OF AGRICULTURAL PRODUCTION

2019 ◽  
Keyword(s):  
Agricultural Production ◽  
Raw Materials ◽  
Cost Calculation ◽  
Cattle Breeding ◽  
Method Of Calculation ◽  
Prime Cost ◽  
Dairy Cattle Breeding ◽  
Methodological Approaches ◽  
Definition Of ◽  
Qualitative Characteristics

In this article approaches to search for reserves of decrease in cost of agricultural production are considered. The methods of cost calculation of dairy cattle breeding products used at the studied enter-prise are analysed, short characteristic of the standard method offered by the Ministry of Agriculture is given, and calculations of alternative options are also carried out. Today creation of accounting of a production unit is very important so that not only weight units must be considered in it, but also the quali-tative structure of products must be reflected. Definition of qualitative characteristics and technological properties by production of milk which depend on use purposes can be an example. The raw materials consumption on a unit of production and its quality and also firmness of storage depends on technologi-cal properties of milk. At calculation of prime cost taking into account qualitative characteristics for cal-culation milk in terms of basic fat content undertakes. The method of calculation of prime cost consider-ing qualitative characteristics is the most expedient as prime cost of 1 c of milk unlike the operating tech-nique is lower. In the article analytical methods of reserves calculation for decrease in prime cost taking into account various factors are proved. The revealed reserves will allow an enterprise to expand its in-vestment opportunities in the future, they will give an additional incentive of modernization of the worn-out machinery and equipment in branches of agriculture.

The sugar and alcohol industry in the biofuels and cogeneration era: a paradigm change (part II)

2014 ◽  
pp. 97-104 ◽  
Author(s):  
Electo Eduardo Silv Lora ◽  
Mateus Henrique Rocha ◽  
José Carlos Escobar Palacio ◽  
Osvaldo José Venturini ◽  
Maria Luiza Grillo Renó ◽  
...  
Keyword(s):  
Large Scale ◽  
New Technologies ◽  
Process Integration ◽  
Animal Feed ◽  
Raw Materials ◽  
Biofuel Production ◽  
New Paradigm ◽  
Alcohol Industry ◽  
Feed Production ◽  
Steam Parameters

The aim of this paper is to discuss the major technological changes related to the implementation of large-scale cogeneration and biofuel production in the sugar and alcohol industry. The reduction of the process steam consumption, implementation of new alternatives in driving mills, the widespread practice of high steam parameters use in cogeneration facilities, the insertion of new technologies for biofuels production (hydrolysis and gasification), the energy conversion of sugarcane trash and vinasse, animal feed production, process integration and implementation of the biorefinery concept are considered. Another new paradigm consists in the wide spreading of sustainability studies of products and processes using the Life Cycle Assessment (LCA) and the implementation of sustainability indexes. Every approach to this issue has as an objective to increase the economic efficiency and the possibilities of the sugarcane as a main source of two basic raw materials: fibres and sugar. The paper briefly presents the concepts, indicators, state-of-the-art and perspectives of each of the referred issues.

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