Selection of an effective technology for the degasification of coal beds

2015 ◽  
Vol 49 (6) ◽  
pp. 381-386 ◽  
Author(s):  
S. V. Slastunov ◽  
K. S. Kolikov ◽  
A. A. Zakharova ◽  
E. V. Mazanik
Author(s):  
V. A. GALUSHKO ◽  
I. V. KOLODYAZHNAYA ◽  
K. A. SAVKA ◽  
A. S. UVAROVA

Purpose. Researching the most energy-efficient warming construction system of buildings among the commonest of them, using their technical, technological and economical characteristics. Methodology. Synthesis, analysis, mathematical methods. Findings. For choosing effective technology, information analysis of systems  warming of facades was made. Three types were chosen from the most prominent technics. Technical and economical calculations were made for these systems. Originality. Enhancement of the counting approach whereby the selection of the most suitable variant is making by a few points, which doesn’t exclude each other. Practical value. Discovered is, for the optimal choosing of the warming construction of the facade, there is an importance to use a few technical and economical records at the same time.


2019 ◽  
Vol 297 ◽  
pp. 04002 ◽  
Author(s):  
Yuri Vernigorov ◽  
Valery Lebedev ◽  
Lidianna Chunakhova

It is proved that the use of a variable inhomogeneous magnetic field, created by the superposition of constant and variable, strongly inhomogeneous fields, is considered to be very promising for the separation of non-magnetic fraction from powders of magnetic materials. This article introduces the effective technology of separation of non-magnetic fraction from the sludge wastes of metal production in the electromagnetic field, which allows to destroy the aggregates, to separate the abrasive and to get products of high purity. A complex on processing of grinding sludge includes the following blocks: the loading block with dispenser; block of preliminary squeezing and washing of DRC; the block of drying; the block of a refinement; the block of division of sludge fractions. Experimental approbation of the proposed technological scheme of sludge separation, which had been carried out on iron ore concentrate of class 63 microns with silica content of 4.57% of the mass, showed that with the field parameters close to the calculated, the magnetic vibrating layer of iron powder PZh-4M has the maximum development; increasing the separation time leads to more efficient separation in the interval of field induction gradient from 550 mT/ m to 610 mT/m.


Ugol ◽  
2021 ◽  
pp. 11-14
Author(s):  
T.K. Isabek ◽  
◽  
V.F. Demin ◽  
D.S. Shontaev ◽  
S.K. Malybaev ◽  
...  

Author(s):  
Ivan Sevostianov ◽  
Oleksii Tokarchuk ◽  
Maryna Pidlypna

Processes of classification (separation) of dry and damp dispersive materials are wide spread in metallurgy, construction, agriculture, in chemical, food, processing industry and in other branches. Therefore, constructors and technologists pay a lot of attention for rationalization of these processes and equipment for their realization in direction of increase of productivity and quality of classification, reliability of machines, decrease of power-consuming. In last decades in Ukraine with development of small and middle farming enterprises there is a tendency of increase of variety of grain raw materials by kinds, grades, humidity, sizes, mass, density and volume of particles. All this should consider food and processing enterprises which often work in quite intensive regime in a period of harvest. So, in last time there become more strong demands to efficiency of technological preparation of processes classification for selection of most rational method, equipment and regimes of processing with consideration of parameters of raw materials and demands of further technological processes (grinding, mixing, heating, cooking, frying etc). Because of that, there will be useful a method of automated technological projection of classification processes of dry dispersive materials, proposed in this article. The method allows to elaborate most effective technology of classification with consideration of volume of output program, time for its fulfilment, geometrical and structural-mechanical properties of processed material, characteristics of available equipment for classification and criterions of efficiency of elaborated technology – productivity and specified operational expenses for its realization. The method can be used as a base for elaboration of a computer program of automated synthesis and analysis of rational technological processes of classification of grain raw materials.


Author(s):  
Thad Druffel ◽  
Venkat Kalyan Vendra ◽  
Delaina Amos ◽  
Mahendra Sunkara

Dye sensitized solar cells (DSSCs) have garnered a great deal of interest as a cost-effective technology for large-scale manufacturing. Engineered inorganic hybrid nanostructures can improve the performance of DSSC’s without affecting the cost effectiveness of the devices. Here, we present a concept of engineered hybrid nanostructures, incorporating appropriate selection of nanowire and nanoparticle materials, to enhance the charge transport and reduce the recombination within the photoanode. Low recombination properties of this photoanode allow flexibility in choosing the redox couple for increasing open circuit voltage.


Author(s):  
Umarova Inoiat ◽  
◽  
Aminzhanova Sevara ◽  
Salizhanova Gulnarakhon ◽  
Kalandarov Kobil ◽  
...  

Introduction. The article considers the results of operations research on the washability of polymetallic ore at Khandiza deposit. The results of the research of material composition are delivered together with the variants of process samples flotation at Khandiza deposit. Research aim is to study the material composition of ore samples and the development of effective technology of polymetallic ore concentration at Khandiza deposit. Methodology. Polymetallic ore of Khandiza deposit has been chosen as research subject. As part of the process various reagents have been used as well as various laboratory facilities, modern physical, physical-chemical and chemical methods of analysis. Research has been carried out in two direction: bulk flotation of all ore minerals with further selection of bulk concentrate to lead, zinc and copper concentrates and direct bulk selective flotation with the production of lead-copper and zinc concentrates in a successive order. Results. The outcomes of ore material composition study have been delivered based on spectral, chemical and rational analysis. It has been determined that industrially valuable ore components are lead, zinc and copper, the contents of which are presented. It has been shown that ore minerals are in tight twinning with nonmetallic minerals, i.e. quartz, sericite, chlorite, carbonate, etc. Summary. As a result of concentration, lead, zinc and copper concentrates have been dressed. The concentrated meet industrial requirements.


Technologies ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 18
Author(s):  
Joshua M. Pearce

Internet-related electricity consumption is rising rapidly as global Internet users spend more than 6.5 h per day online. Open source ad blockers have the potential to reduce the time and thus electricity spent using computers by eliminating ads during Internet browsing and video streaming. In this study, three open source ad blockers are tested against a no-ad blocker control. Page load time is recorded for browsing a representative selection of the globally most-accessed websites, and the time spent watching ads on videos is quantified for both trending and non-trending content. The results show that page load time dropped 11% with AdBlock+, 22.2% with Privacy Badger, and 28.5% with uBlock Origin. Thus, uBlock Origin has the potential to save the average global Internet user more than 100 h annually. The energy conserved if everyone in the United States used the open source ad blocker would save over 36 Americans lives per year if it were to offset coal-fired electricity generated-based pollution. In the United States, if all Internet users enabled Privacy Badger on their computers, Americans would save more than $91 million annually. Globally, uBlock Origin could save consumers more than $1.8 billion/year. Open source ad blockers are a potentially effective technology for energy conservation.


1991 ◽  
Vol 1991 (1) ◽  
pp. 559-562
Author(s):  
John A. Glaser ◽  
Albert D. Venosa ◽  
Edward J. Opatken

ABSTRACT The application of nutrients to assist and accelerate naturally occurring biodegradation processes was studied at field scale on contaminated shoreline in Prince William Sound as part of the effort to recover from the Exxon Valdez oil spill. Selection of fertilizer forms and means to apply the nutrients comprised a major part of the evaluation project. Liquid and solid forms of nutrients were tested. New and innovative application technology was investigated for use under field conditions. Ease of application and cost-effective technology were important selection criteria. Worker protection and environmental-effect concerns served to modify the selection of application technology. Details of application technology selection are presented, difficulties with application and areas for potential research are discussed. Projections for development of application technology to subsurface deposits of stranded oil are made.


2019 ◽  
Vol 42 ◽  
Author(s):  
Gian Domenico Iannetti ◽  
Giorgio Vallortigara

Abstract Some of the foundations of Heyes’ radical reasoning seem to be based on a fractional selection of available evidence. Using an ethological perspective, we argue against Heyes’ rapid dismissal of innate cognitive instincts. Heyes’ use of fMRI studies of literacy to claim that culture assembles pieces of mental technology seems an example of incorrect reverse inferences and overlap theories pervasive in cognitive neuroscience.


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