Some Aspects Of Using Goafs For Locating Post-Flotation Waste In LGOM Mines

2015 ◽  
Vol 60 (4) ◽  
pp. 941-954
Author(s):  
Maciej Mazurkiewicz ◽  
Edward Popiołek ◽  
Zygmunt Niedojadło ◽  
Paweł Sopata ◽  
Tomasz Stoch
Keyword(s):  
Rock Mass ◽  
Quantitative Evaluation ◽  
Raw Materials ◽  
Operating Conditions ◽  
Mineral Raw Materials ◽  
Extraction Field ◽  
Hydraulic Filling ◽  
Roof Rocks ◽  
Positive Results

Abstract As a result of mining of deposits of mineral raw materials, spaces are formed in the rock mass, which get partially filled with roof rocks or by the backfill, most often sand. However, some voids remain in the rock mass, and can be used as a place to locate waste. The thesis analyses systems and operating conditions of mining deposits, in terms of the possible existence of spaces for filling in the LGOM mines. It was determined that the most probable option is to use goafs after mining the ore with a thickness of over 3 m in the last 5 years, with the systems of roof deflection and their partial lifting. Quantitative evaluation of the voids is based on the comparison of the subsidence over the extraction field and the volume of the extracted deposit. It has been proved that the existing voids provide the possibility of locating approximately 8 million m3 of waste in goafs. It is highly possible to locate further 11 million m3 of waste after obtaining positive results of the practical location of them and gaining relevant experience. The goafs after mining with hydraulic filling, goafs in the deposit of the thickness of up to 2 m and mined more than 20 years ago were recognized as useless for locating waste.

Arc atomic emission determination of noble metals in mineral raw materials and products of their processing

2012 ◽  
Vol 67 (10) ◽  
pp. 823-829 ◽  
Author(s):  
Yu. S. Sukach ◽  
E. N. Savinova ◽  
G. M. Kolesov ◽  
D. A. Tyurin
Keyword(s):  
Noble Metals ◽  
Raw Materials ◽  
Atomic Emission ◽  
Mineral Raw Materials

scholarly journals Comprehensive report on Materials for Gas Turbine Engine Components

2019 ◽  
Vol 9 (2S2) ◽  
pp. 155-158
Keyword(s):  
Gas Turbine ◽  
Turbine Blade ◽  
Thermal Stresses ◽  
Prolonged Exposure ◽  
Raw Materials ◽  
Turbine Blades ◽  
Gas Turbine Engine ◽  
Operating Conditions ◽  
Turbine Engine ◽  
Engine Component

In the past three decades, it is very challenging for the researchers to design and development a best gas turbine engine component. Engine component has to face different operating conditions at different working environments. Nickel based superalloys are the best material to design turbine components. Inconel 718, Inconel 617, Hastelloy, Monel and Udimet are the common material used for turbine components. Directional solidification is one of the conventional casting routes followed to develop turbine blades. It is also reported that the raw materials are heat treated / age hardened to enrich the desired properties of the material implementation. Accordingly they are highly susceptible to mechanical and thermal stresses while operating. The hot section of the turbine components will experience repeated thermal stress. The halides in the combination of sulfur, chlorides and vanadate are deposited as molten salt on the surface of the turbine blade. On prolonged exposure the surface of the turbine blade starts to peel as an oxide scale. Microscopic images are the supportive results to compare the surface morphology after complete oxidation / corrosion studies. The spectroscopic results are useful to identify the elemental analysis over oxides formed. The predominant oxides observed are NiO, Cr2O3, Fe2O3 and NiCr2O4. These oxides are vulnerable on prolonged exposure and according to PB ratio the passivation are very less. In recent research, the invention on nickel based superalloys turbine blades produced through other advanced manufacturing process is also compared. A summary was made through comparing the conventional material and advanced materials performance of turbine blade material for high temperature performance.

scholarly journals Prospects for the Use of Medical Clays (Review)

2019 ◽  
Vol 8 (4) ◽  
pp. 27-31 ◽  
Author(s):  
A. V. Bondarev ◽  
E. T. Zhilyakova ◽  
N. B. Demina ◽  
E. Yu. Timoshenko
Keyword(s):  
Raw Materials ◽  
Chemical Compounds ◽  
Food Technology ◽  
Mineral Raw Materials ◽  
Promising Direction ◽  
Pharmaceutical Substances ◽  
Pharmaceutical Technology ◽  
New Directions ◽  
Scientific Significance ◽  
Cutaneous Application

Introduction. The article deals with the aspects of the use of Medical Clays in Pharmaceutical Technology. A review of the traditional areas of application of Medical Clay, as well as highlighting new directions.Text. One of the main problems of domestic industrial pharmacy is a narrow nomenclature of active pharmaceutical substances and excipients. Replenishment of the nomenclature occurs in two ways-through the synthesis of new chemical compounds or through the processing of natural raw materials of animal, plant or mineral origin. In the process of purification and processing of mineral raw materials, Medical Clays are obtained, which are now widely used as active pharmaceutical substances for the production of Enterosorbents, as well as auxiliary substances.Conclusion. A review of perspectives and areas of use of Medicinal Clays have shown that at present, Medical Clays used in the three traditional areas: cutaneous application, application per os, application in pharmaceutical and food technology. A promising direction is the use of Medical Clays as transport drug systems. The study of this information array and its generalization has undoubted practical and scientific significance in modern pharmaceutical technology. 

scholarly journals INNOVATIVE PROCESSES OF DEEP AND ENVIRONMENTALLY SAFE PROCESSING OF TECHNOGENIC RAW MATERIALS IN THE CONDITIONS OF NEW ECONOMIC CHALLENGES

2021 ◽  
Vol 13 (2) ◽  
pp. 224-237
Author(s):  
Valentin CHANTURIA ◽  
◽  
Irina SHADRUNOVA ◽  
Olga GORLOVA ◽  
◽  
...  
Keyword(s):  
Raw Materials ◽  
Mining Industry ◽  
Mineral Resources ◽  
Secondary Products ◽  
Resource Saving ◽  
Mineral Raw Materials ◽  
The Face ◽  
Environmentally Safe ◽  
Copper Zinc ◽  
Technogenic Raw Materials

Innovative processes of deep and complex processing of technogenic raw materials in the context of sustainable development of the mining industry and the economic challenges facing the mining industry should ensure the transition to a circular economy and the maximum use of natural resources. The article reflects the priority scientific and technological research on the involvement of technogenic mineral resources in efficient processing. Presented, developed at ICEMR RAS, including jointly with universities, research and production organizations and enterprises, modern innovative processes of deep and environmentally friendly processing of refractory mineral raw materials of complex material composition (tailings of enrichment of non-ferrous and noble metal ores, poor off-balance ores, slags ferrous and nonferrous metallurgy, sludge of metallurgical production) and hydro-mineral technogenic resources (acidic mineralized bottom-dump waters of mining enterprises of the copper-zinc complex of the Urals, saponite-containing circulating waters of diamond processing factories). Among other things, new directions in the field of selective disintegration of finely dispersed mineral raw materials based on energy effects and deep processing of slags are outlined; increasing the selectivity of enrichment processes; combined processing of technogenic raw materials; resource-saving processing of technogenic and hydro-mineral resources, obtaining secondary products from processing waste. It is shown that in the face of new economic challenges, Russia has sufficient scientific and technological potential in the field of deep and environmentally safe processing of technogenic raw materials in the form of developed and, to varying degrees, tested innovative resource-saving technologies that correspond to the world level, and in a number of technologies are superior to it.

scholarly journals Floristerias processing of mineral raw materials and waste Yaroslavsky mining and beneficiation plant

2017 ◽  
Author(s):  
Софья Ярусова ◽  
Sof'ya Yarusova ◽  
Павел Гордиенко ◽  
Pavel Gordienko ◽  
Иван Жевтун ◽  
...  
Keyword(s):  
Graduate Students ◽  
Alkali Metals ◽  
Raw Materials ◽  
General Information ◽  
Mineral Raw Materials ◽  
Beneficiation Plant ◽  
Fluoroammonium Salts ◽  
Beryllium Compounds ◽  
Main Components ◽  
Ore Dressing

The monograph presents general information on the main components of fluorite-containing ores and wastes and the results of studies on the possibility of complex processing of fluorite-containing mineral raw materials and wastes of the Yaroslavskiy ore-dressing combine with the extraction of beryllium compounds, alkali metals, fluoroammonium salts, as well as associated products in the form of gypsum, amorphous silica. Also, earlier studies related to this problem are summarized. The monograph is intended for specialists in the field of chemistry, chemical technology, ecology, scientists, graduate students, undergraduates involved in the complex processing of mineral raw materials and man-made wastes.

scholarly journals History of research on solid electrolytes with ionic conductivity in the Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of the KSC RAS.

2020 ◽  
Vol 11 (6-2020) ◽  
pp. 44-54
Author(s):  
Galina B. Kunshina ◽  
◽  
Vladimir. P. Kovalevsky ◽  
Keyword(s):  
Solid Electrolytes ◽  
Raw Materials ◽  
Research Direction ◽  
Mineral Raw Materials ◽  
Rare Elements ◽  
History Of Research ◽  
Start Up ◽  
History Of ◽  
Scientific Group ◽  
Academy Of Sciences

There are described the start-up and development at the I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of the FederalResearch Centre “Kola Science Centre of the Russian Academy of Sciences”(ICTREMRM KSC RAS) studies on the synthesis of low-temperature solid electrolytes with high conductivity for Ag+, Cu+, Li+ions. The most significant results achieved by a scientific group under the leadership of PhD O.G. Gromov for almost half a century are presented. The research direction of solid electrolytes is extremely promising and in demand, and the possible fields of application of such electrolytes are constantly expanding.

scholarly journals Technogenic Mineral Raw Materials for the Production of Refractories and Ceramics

2020 ◽  
Author(s):  
Vladimir Perepelitsyn ◽  
Alexander Yagovtsev ◽  
Vitaliy Merzlyakov ◽  
Victor Kochetkov ◽  
Alexander Ponomarenko ◽  
...  
Keyword(s):  
Raw Materials ◽  
Mineral Resources ◽  
High Alumina ◽  
Secondary Mineral ◽  
The Urals ◽  
Mineral Raw Materials ◽  
Secondary Resources ◽  
Additional Processing

Chemical–mineral and material–genetic classifications of technogenic mineral raw materials including up to 36 polyphase groups of materials that form the basis of secondary resources suitable for the production of refractories and ceramics after additional processing are proposed. It is shown that technogenic materials of the Urals are cheap multifunctional raw materials and can be used in the production of magnesia-silicate ceramics, carbon– and zirconium–containing high-alumina refractories and cements. Keywords: classification, secondary mineral resources, composition, recycling, refractories, ceramics

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