scholarly journals ДОСЛІДЖЕННЯ ДИСПЕРСНОГО СКЛАДУ ПИЛУ ПРИ ВИРОБНИЦТВІ ТЕПЛОІЗОЛЯЦІЙНИХ МАТЕРІАЛІВ

World Science ◽  
2019 ◽  
Vol 1 (2(42)) ◽  
pp. 18-23
Author(s):  
Гаджиєв Едуард Назімович
Keyword(s):  
Thermal Insulation ◽  
Raw Materials ◽  
Mineral Wool ◽  
Fine Dust ◽  
Atmospheric Air ◽  
Gas Cleaning ◽  
Insulation Materials ◽  
Aspiration System ◽  
Cleaning Equipment ◽  
Selection Of

The problem of air pollution with environmentally hazardous dust with a particle size of up to 10 microns at plants for the production of thermal insulation materials is considered. The purpose of this work is to study the dispersed composition of dust in the production of insulation materials (such as mineral wool), and to determine the effectiveness of the existing gas cleaning equipment, which traps pollutants. The dispersed composition of the dust generated at the plant for the production of thermal insulation materials, and the dispersed composition of the dust collected by the dust-cleaning equipment was investigated. Experimentally and with the use of computer programs, it has been established that the efficiency of extracting fine dust from dust- cleaning equipment does not exceed 78%. It is established that the dust of mineral wool entering the aspiration system is dominated by particles with a size from 2.5 microns to 25 microns. Dust with a SiO2 content of up to 70%, which is released during unloading and transportation of raw materials (dolomite, basalt), enters the atmospheric air without purification. At the same time, particles with a size of up to 60 microns and up to 72 microns dominate in atmospheric air, respectively. The main characteristics of the dust necessary for the objective selection of dust-cleaning equipment are determined.

Development and Research of Thermal Insulation Materials from Natural Fibres

2014 ◽  
Vol 604 ◽  
pp. 285-288 ◽  
Author(s):  
Saulius Vaitkus ◽  
Rūta Karpavičiūtė ◽  
Sigitas Vėjelis ◽  
Lina Lekūnaitė
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Preparation Method ◽  
Raw Materials ◽  
Natural Fibres ◽  
Current Work ◽  
Insulation Materials ◽  
Flax Fibres ◽  
Hemp Fibres

Natural fibres from flax and hemp are used as raw materials for efficient thermal insulation. In current work, tests were carried out using chopped and combed long flax fibres as well as chopped and combed long hemp fibres. Investigations have shown that thermal conductivity of natural fibres depends on their preparation method (combing, chopping) and materials density.

Investigation of Thermal Insulation Materials Based on Easy Renewable Row Materials from Agriculture

2011 ◽  
Vol 335-336 ◽  
pp. 1412-1417 ◽  
Author(s):  
Jiri Zach ◽  
Jitka Peterková ◽  
Vít Petranek ◽  
Jana Kosíková ◽  
Azra Korjenic
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Raw Materials ◽  
Building Construction ◽  
Materials Development ◽  
Insulation Materials ◽  
Thermal Insulating ◽  
Plastic Materials ◽  
Energy Consuming ◽  
Rock Wool

Production of building materials is mostly energy consuming. In the sphere of insulation materials we mostly see rock wool based materials or foam-plastic materials whose production process is demanding from material aspect and raw materials aspect as well. At present the demand for thermal insulation materials has been growing globally. The thermal insulation materials form integral part of all constructions in civil engineering. The materials mainly fulfill the thermal insulating functions and also the sound-insulating one. The majority of thermal insulation materials are able to fulfill both of the functions simultaneously. The paper describes questions of thermal insulation materials development with good sound properties based on natural fibres that represent a quickly renewable source of raw materials coming from agriculture. The main advantage of the materials are mainly the local availability and simple renewability of the raw materials. In addition an easy recycling of the materials after their service life end in the building construction and last but not least also the connection of human friendly properties of organic materials with advanced product manufacture qualities of modern insulation materials.

scholarly journals Silicon Metallurgy and Ecology Problems

2020 ◽  
Author(s):  
K. S. Yolkin ◽  
A. V. Sivtsov ◽  
D. K. Yolkin ◽  
A. I. Karlina
Keyword(s):  
Silicon Carbide ◽  
Anthropogenic Impact ◽  
Raw Materials ◽  
Furnace Productivity ◽  
Fine Dust ◽  
Reaction Products ◽  
Gas Cleaning ◽  
Furnace Gases ◽  
Negative Environmental Impact ◽  
Sulfur Containing

Modern silicon production technology is associated with a risk of negative environmental impact due to the fact that in addition to the final product, other reaction products are formed, including dust, from the incomplete use of charge materials. Gases released during silicon smelting in ore-thermal furnaces are characterized by the content of a large amount of fine dust. Dust consists of 94–96% of silicon dioxide. As a result of the use of sulfur-containing raw materials in furnaces as sulfur reducing agents, sulfur compounds in the form of SO2 are present in the furnace gases entering for purification, and nitrogen oxides are also present. The developed silicon recovery smelting technology reduces the technological energy consumption and increases the furnace productivity in proportion to the amount of carbon replaced by silicon carbide. Replacing carbon with silicon carbide reduces the dust content and the amount of exhaust furnace gases, and changes their composition. Thus, reducing the amount of pollutants reduces their anthropogenic impact on the environment. Keywords: silicon, gas cleaning dust, gas capture system, microsilica

Ensuring energy efficiency of refrigeration piping

2021 ◽  
pp. 45-52
Author(s):  
G.I. Petrov ◽  
V.N. Kornienko ◽  
A.G. Donetskikh
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Thermal Characteristics ◽  
Operational Reliability ◽  
Insulating Materials ◽  
Insulation Materials ◽  
Synthetic Rubber ◽  
Materials Used

Improving energy efficiency and energy saving in refrigeration technology depends largely on the use of modern thermal insulation materials in the thermal insulation structures of refrigeration pipelines. The article presents a comparative analysis of the thermal characteristics and operational properties of heat-insulating materials used in refrigeration. The features of RUFLEX thermal insulation materials based on foamed synthetic rubber produced from domestic raw materials and their compliance with the requirements of energy efficiency, durability, operational reliability and safety are considered.

scholarly journals The potential for implementation of liquid thermal insulation in organizational and technological solutions

2019 ◽  
Vol 97 ◽  
pp. 06039
Author(s):  
Dmitry Topchy ◽  
Aleksey Yurgaytis ◽  
Alina Manakhova ◽  
Karina Mustafina
Keyword(s):  
Thermal Insulation ◽  
Building Material ◽  
Insulation Materials ◽  
Key Characteristics ◽  
Selection Of ◽  
New Facilities

Nowadays, the consumer is provided with an extensive selection of various thermal insulation materials. Particularly interesting is the possibility of using liquid insulation in the construction of new facilities, as well as overhaul and renovation programs. This article is devoted to the introduction of relatively new building material on the market - thermal paint (liquid insulation). It features the key characteristics of the product and provides a set of conclusions about its applicability and safety in comparison with other insulation materials according to the results of research and testing. The necessary steps for a massive project introduction of the material into the industry are given, taking into account the development of organizational and technological solutions, depending on the conditions of using this material.

COMPUTATIONAL ANALYSIS OF HEAT AND MASS TRANSPORT IN CHARACTERISTIC DETAIL OF INTERIOR THERMAL INSULATION SYSTEM

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Jiří Maděra ◽  
Jan Kočí ◽  
Václav Kočí
Keyword(s):  
Computational Modeling ◽  
Thermal Insulation ◽  
System Application ◽  
Building Materials ◽  
Wood Fiber ◽  
Mineral Wool ◽  
Point Of View ◽  
Insulation Materials ◽  
Beneficial Effects ◽  
The Right

Computational modeling represents useful tool for the assessment of newly designed or refurbished building materials and structures. Especially, when complex buildings elements need to be assessed from a hygrothermal point of view, the computational modeling is the right approach with desired power and accuracy. In this paper a historical wall element is investigated using two-dimensional simulation in order to study the effect of application of several insulation materials in various scenarios. In total two insulation materials are investigated (mineral wool, wood fiber boards) that are applied in three different scenarios. All simulations are performed under real climatic load. The results of the computational simulations reveal potential weak points in system application and can provide engineers and designers with valuable recommendations and practical information. The best results were obtained for thermal insulation from mineral wool. On the other hand, an improper system application can lead to a significant devaluation of the beneficial effects on the thermal performance of the studied brick element.

scholarly journals PRODUCTION OF THERMAL INSULATION MATERIAL BASED ON VOLCANIC ASH DEPOSITS OF PRIMAGADANYA

2019 ◽  
Vol 10 (2) ◽  
pp. 78-91
Author(s):  
A. V Bolotin ◽  
S. M Sergeev ◽  
A. A Lunegova ◽  
E. A Kochetkova
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Volcanic Ash ◽  
Mineral Wool ◽  
Raw Material ◽  
Thermal Calculation ◽  
Vapor Permeability ◽  
Insulation Material ◽  
Comparative Performance ◽  
Insulation Materials

Modern technologies are not standing still, and scientists are trying not only to invent new building materials, but also to find non-standard use of various raw materials that were previously considered unsuitable for use. Innovative technologies are actively used for modern construction of buildings, in particular, some types of new materials are used in the construction of various facilities. This is especially true in areas where it is not possible to import or use ordinary building materials for various reasons. Often, when designing a building, developers are wondering whether it is worth making the house warm during construction, and which insulation for the walls of the house is better to choose. This article addresses the question of which insulation for walls is most suitable for construction. The most common are mineral insulation, which are represented on the market today in the form of basalt slabs, fiberglass, etc. They have such advantages as low thermal conductivity, good thermal insulation and vapor permeability. The article presents a table with comparative performance characteristics of a mineral wool stone slab and a fiberglass slab. Stone or basalt wool has several advantages. It is able to withstand significant temperatures and temperature changes, the mats are easy to transport, convenient to install. In our opinion, a serious alternative to basalt in the production of thermal insulation materials is volcanic ash. One of the main features of volcanic ash are its building qualities, such as good thermal insulation and an environmentally friendly composition. Since here we are considering the possibility of producing insulation materials based on volcanic ash, we performed a thermal calculation of the enclosing structures. Also in the tables are the costs of transportation of volcanic ash from the field to the point of the proposed production of insulating material. Volcanic ash can be widely used in countries with high volcanic activity as an inexpensive raw material for the manufacture of building materials. It does not require additional processing and has a number of useful properties.

scholarly journals Aplikácia analytickej viacúrovňovej metódy pri výbere zatepľovacieho materiálu

2020 ◽  
Vol 19 (2) ◽  
pp. 21-26
Author(s):  
Michaela Horváthová ◽  
◽  
Linda Makovická-Osvaldová
Keyword(s):  
Thermal Insulation ◽  
Ignition Time ◽  
Insulation Material ◽  
Thermal Coefficient ◽  
Multilevel Method ◽  
Insulation Materials ◽  
Applied Method ◽  
Selection Of

The article deals with the selection of four types of insulation material based on the particular criteria. Specifically, it will be a matter of decision among facade insulation materials. We chose four species of the most used thermal insulation materials that are available on the market and are used frequently. The applied method is an analytical multilevel method that allows us to divide the whole problem into hierarchies and then compare two elements together and thus gain the weights of the criteria. Subsequently, we assessed the alternatives. The selected criteria are the price of the material, the thermal coefficient conductivity, flammability class and ignition time of the sample. The method is verified in the software BPMSG AHP priority calculator.

The Choice of Chemical Composition and Raw Materials for the Production of Basalt Wool with the Defined Characteristics

2018 ◽  
Vol 284 ◽  
pp. 1018-1023
Author(s):  
A.V. Khandoshka ◽  
Svetlana G. Vlasova
Keyword(s):  
Surface Tension ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Mineral Wool ◽  
Chemical Compositions ◽  
Insulation Material ◽  
X Ray

The composition of mineral wool was selected for the research, based on the chemical composition of the raw materials, the determination of the acidity module to obtain the thermal insulation material with the best characteristics and the lowest cost of the production of basalt mineral wool. The paper deals with compositions of raw materials and selection chemical compositions of charges for production of basalt mineral wool, and the experiments of welded samples were made and tested for viscosity, surface tension, chemical analysis and x-ray analysis.

Reduction o Air Pollution from Fine Dust by Increasing Efficiency of Gas Emission Purification Sintering Furnaces

2021 ◽  
Vol 25 (12) ◽  
pp. 4-9
Author(s):  
E.V. Kiryushin ◽  
O.V. Pilyaeva ◽  
I.I. Shepelev ◽  
E.N. Eskova
Keyword(s):  
Air Pollution ◽  
Gas Purification ◽  
Fine Dust ◽  
Gas Emission ◽  
Atmospheric Air ◽  
Gas Cleaning ◽  
Waste Gas ◽  
Purification Unit ◽  
High Degree ◽  
Degree Of Purification

The installation of an additional stage of the "wet" waste gas purification unit at the alumina sintering furnaces ensured the achievement of a high degree of purification of gas emissions from fine impurities up to 96 % and the standards of maximum permissible emissions of solid pollutants into the atmosphere established for an industrial enterprise. The formed slude after gas cleaning is proposed to be sent for further processing to the hydrochemistry workshop, thereby ensuring its disposal without contamination of the natural environment. The analysis of air pollution indicators confirmed a decrease in emissions of solid pollutants in the atmospheric air of Achinsk.

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