Geotechnological methods of gas extraction from technogenic coal deposits

The article presents an analysis of modern geotechnological methods of gas extraction from coal technogenic deposits. Special attention was focused to surface methods complex resource development, which concentrated in filled rock dumps and sludge accumulators of coal-processing factories. The work describes physical-and-chemical methods of thermal impact on solid carbon-contained raw materials, which is considered as a binary mixture of coal and rock, in an oxygen-free medium or with the use of oxidants. The article presented the researches results of catalytic transformations taking place in the structure of a coal substance. Various versions of the use of catalysts in the processes of physical and chemical transformations of coal were proposed. The conducted researches allow to analyze the existing methods of impact on the mine medium identify the most perspective directions for the development of new methods in the field of geotechnological processes of gas extraction from coal technogenic deposits.

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Development of Technology of Release of Iron and Its Oxidic Connections from Dump Steel-Smelting Slag

10.20944/preprints201907.0268.v1 ◽

2019 ◽

Author(s):

Sokhibjon Turdaliyevich Matkarimov ◽

Anvar Abdullayevich Yusupkhodjayev ◽

Bakhriddin Berdiyarov Berdiyarov

Keyword(s):

Raw Materials ◽

Uv Spectroscopy ◽

Modern Physic ◽

Electronic Microscopy ◽

Steel Smelting ◽

Chemical Methods ◽

Granulometric Analysis ◽

Smelting Slag ◽

Physical And Chemical ◽

To Receive

In article questions of development low-waste technologies of processing of steel-smelting slag are considered, gland allowing by extraction and its connections from steel-smelting slag to receive additional raw materials for production became, and the remains to use in building industry. Studying of gravitational methods of enrichment of steel-smelting slag and heat treatment the ore-fuel of pellets is the basis for work. Proceeding from it, in work modern physic-mechanical, chemical and physical and chemical methods of researches (UV-spectroscopy, electronic microscopy, the granulometric analysis) are used.

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OPTIMIZATION OF RAW MIX COMPOSITION OF SEREBRYANSKY CEMENT PLANT

Construction Materials and Products ◽

10.34031/2618-7183-2018-1-4-13-20 ◽

2020 ◽

pp. 13-20

Author(s):

M. Nikitina ◽

A. Erygina ◽

T.I. Timoshenko

Keyword(s):

Cost Efficiency ◽

Raw Materials ◽

Cement Industry ◽

Cement Clinker ◽

Chemical Transformations ◽

The Moment ◽

Physical And Chemical ◽

To Receive ◽

Selection Of

now a top trend of technical development in the cement industry of Russia, is optimization of all technological repartitions of production. Obtaining the quality portlandtsement is multiple-factor process. It is influenced not only by the physical and chemical transformations of raw materials occurring during the firing of cement clinker, but also what will be the composition of the raw mixture and whether this mixture is prepared qualitatively. Work consists in a research and selection of an optimum compounding of raw mix, with the purpose to receive cement with high rates of quality. This direction will allow: first, to expand a source of raw materials, to process raw materials which go to dumps because in it is mute a large amount of quartz and impurity connections contains; secondly, to make small reconstruction of the line of preparation of raw mix. At the moment, the plant works on mixed mixtures of aluminosilicate raw materials, i.e. two types of aluminosilicate raw materials which are previously mixed in certain ratios therefore it affects on the accuracy of dispensing of components are used. Accuracy of dispensing of modern batchers, a component ± (1 … 2) %, is often insufficient. In this regard, the new option of optimum composition of mix is offered and investigated. This option of a "clean" mixing of components, will allow to improve process of mixing of initial raw materials, to operate process of drawing up proportions of mixes in a supply line of materials. And also it will allow to eliminate long-term deviations, guaranteeing the solution of problems at the earliest stage of their emergence. Receiving a qualitative ready-made product, reduction of costs for energy resources and cost efficiency of the proposed solution is result of this work

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The concept of creating an expert system for selecting the optimal composition of a multicomponent mixture

Fundamental and applied problems of ferrous metallurgy ◽

10.52150/2522-9117-2018-32-42-46 ◽

2018 ◽

pp. 42-46

Author(s):

I.G. Muravyeva ◽

D.N. Togobitskaya ◽

N.G. Ivancha ◽

A.S. Nesterov

Keyword(s):

Blast Furnace ◽

Expert System ◽

Multicomponent Mixture ◽

Raw Materials ◽

Block Diagram ◽

Component Composition ◽

Chemical Transformations ◽

Optimal Composition ◽

Physical And Chemical

The paper presents the concept of creating an expert system for selecting the optimal composition of a multicomponent domain mixture, the basis of which will be: models of physical and chemical transformations of iron-containing materials, technological criteria, models of loading and distribution of charge materials, taking into account the distribution of the components of the charge over the cross section of the blast furnace. The system being developed differs from the well-known, based on the determination of the forecast indicators blast furnace by varying the component composition of the raw materials using calculations of material - thermal balance of the process. A block diagram of the solution of the problem of choosing the optimal composition of the charge is given.

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STUDYING BY THE MODERN PHYSICAL AND CHEMICAL METHODS OF MINERALOGICAL COMPOSITIONS OF RAW MATERIALS AND CONCENTRATES OF THE GLAUKONIT OF THE KRANTAU ORIGIN

Austrian Journal of Technical and Natural Sciences ◽

10.29013/ajt-19-11.12-30-35 ◽

2019 ◽

pp. 30-35

Author(s):

D. O. Allaniyazov ◽

S. Bauatdinov ◽

T. Bauatdinov ◽

A. Erkaev ◽

S. Talipov

Keyword(s):

Raw Materials ◽

Chemical Methods ◽

Physical And Chemical ◽

Mineralogical Compositions

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On methods of modifying natural minerals

10.31643/2021.20 ◽

2021 ◽

Author(s):

B. Kenzhaliyev ◽

◽

T. Surkova ◽

A. Berkinbayeva ◽

Z. Dossymbayeva ◽

...

Keyword(s):

Solid Phase ◽

Raw Materials ◽

Chemical Properties ◽

Limiting Factor ◽

Chemical Methods ◽

Natural Sorbents ◽

The Republic ◽

Technogenic Raw Materials ◽

Phosphorus Production ◽

Physical And Chemical

Recently, more and more attention is paid to the ecological safety of the republic due to the increased threat of environmental pollution by radionuclides, particularly by uranium, while the processing of uranium-containing raw materials generates a significant amount of liquid industrial waste. The main waste disposal method is a sorption, which requires the use of inexpensive sorbents. Such sorbents can be obtained on the basis of domestic natural raw materials. The significant disadvantages of natural sorbents are a low sorption capacity, which can be increased by developing effective and relatively cheap methods for their modification. The absence of the methods of modification is a limiting factor for the widespread using of natural sorbents for environmental purposes. Variants of modification of natural aluminosilicate and coal-mineral raw materials of Kazakhstan by physical and chemical methods are considered. The chemical methods include the modification with a mixture of tributylphostat and di-2-ethylhexylphosphoric acid in kerosene to obtain "solid-phase extractants", a mixture of phosphoric acid and polyacrylamide, and the synthesis of organominerals. The possibility of using technogenic raw materials as a modifying reagent has been studied. Zeolite of the previously unexplored Kosmurun deposit and shungite of the Koksu deposit were selected for research, and slags of phosphorus production were selected as a technogenic raw materials. Their physical and chemical properties have been studied.

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RESEARCH OF PHYSICAL AND CHEMICAL PROPERTIES OF LOCAL SILICON RAW MATERIALS FOR THE PRODUCTION OF HEAT-INSULATING MATERIALS

EurasianUnionScientists ◽

10.31618/esu.2413-9335.2018.8.56.36-39 ◽

2018 ◽

Vol 8 (56) ◽

pp. 36-39

Author(s):

D.S. Nazarova ◽

A.B. Niyazbekova ◽

D.Zh. Kiisheva

Keyword(s):

Raw Materials ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Insulating Materials ◽

Physical And Chemical ◽

And Chemical Properties

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Diesel Biofuels - Preparation, Characterization and Testing

Revista de Chimie ◽

10.37358/rc.08.11.2018 ◽

2008 ◽

Vol 59 (11) ◽

Author(s):

Cristina Dusescu ◽

Anca Borcea ◽

Vasile Matei ◽

Ion Popa ◽

Irina Gabriela Radulescu

Keyword(s):

Vegetable Oils ◽

Sunflower Oil ◽

Raw Materials ◽

Chemical Properties ◽

Soya Bean ◽

Production Unit ◽

Physical And Chemical Properties ◽

Physical And Chemical ◽

And Chemical Properties

The present paper studies biodiesel samples preparation by transesterification and compares their physical and chemical properties (biofuels prepared from different raw materials - vegetable oils: sunflower oil, crocus oil and soya bean oil) and the biodegradability degree, as well as the possibilities of the integration of such production unit in industrial diagram of auto fuels production.

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Modification of Collagen for Biomedical Applications: A Review of Physical and Chemical Methods

Current Organic Chemistry ◽

10.2174/1385272820666151102213025 ◽

2016 ◽

Vol 20 (17) ◽

pp. 1797-1812 ◽

Cited By ~ 18

Author(s):

Xiaoyue Yu ◽

Cuie Tang ◽

Shanbai Xiong ◽

Qijuan Yuan ◽

Zhipeng Gu ◽

...

Keyword(s):

Biomedical Applications ◽

Chemical Methods ◽

Physical And Chemical

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Biomedical Applications and Patents on Metallic Nanoparticles

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681210999200430005827 ◽

2020 ◽

Vol 10 ◽

Author(s):

Geetanjali Singh ◽

Pramod Kumar Sharma ◽

Rishabha Malviya

Keyword(s):

Metallic Nanoparticles ◽

Biomedical Applications ◽

Size Range ◽

Biomedical Application ◽

Chemical Reduction ◽

Chemical Methods ◽

Future Challenges ◽

Biological Methods ◽

Cancer Diagnosis And Therapy ◽

Physical And Chemical

Aim/Objective: The author writes the manuscript by reviewing the literatures related to the biomedical application of metallic nanoparticles. The term metal nanoparticles are used to describe the nanosized metals with the dimension within the size range of 1-100 nm. Methods: The preparation of metallic nanoparticles and their application is an influential area for research. Among various physical and chemical methods (viz. chemical reduction, thermal decomposition, etc.) for synthesizing silver nanoparticles, biological methods have been suggested as possible eco-friendly alternatives. The synthesis of metallic nanoparticles is having many problems inclusive of solvent toxicity, the formation of hazardous byproducts and consumption of energy. So it is important to design eco-friendly benign procedures for the synthesis of metallic nanoparticles. Results: From the literature survey, we concluded that metallic nanoparticles have applications in the treatment of different diseases. Metallic nanoparticles are having a great advantage in the detection of cancer, diagnosis, and therapy. And it can also have properties such as antifungal, antibacterial, anti-inflammatory, antiviral and anti-angiogenic. Conclusion: In this review, recent upcoming advancement of biomedical application of nanotechnology and their future challenges has been discussed.

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