scholarly journals Research and development of a comprehensive technology for processing kaolinite clays in Kazakhstan

2021 ◽  
Author(s):  
S. Dyussenova ◽  
◽  
Ahmed A. M. El-Amir ◽  
◽  
◽  
...  
Keyword(s):  
Phase Composition ◽  
Sodium Bicarbonate ◽  
Raw Materials ◽  
Chemical Activation ◽  
Sodium Bicarbonate Solution ◽  
High Quality ◽  
Standard Methods ◽  
Mineral Raw Materials ◽  
Sodium Aluminosilicate ◽  
The Republic

In the Republic of Kazakhstan, the most promising are kaolinite clays of the Alekseevsky deposit. For effective processing of clays, it is necessary to develop special methods of processing, since satisfactory results were not achieved when using standard methods of gravity processing. The article provides the results of studies of the effect of preliminary chemical activation on the yield of the kaolinite fraction during gravitational processing. Previously, the method of preliminary chemical activation of raw materials in a solution of sodium bicarbonate has proven itself well in the processing of various mineral raw materials. It is determined that as a result of preliminary chemical activation, changes in the phase composition occurred. The dependence of the yield of the kaolinite fraction on the temperature of chemical activation, duration, and the ratio of W:T and the concentration of the sodium bicarbonate solution. Based on the results obtained, a technology for the complex processing of kaolinite clays has been developed, which provides for the preliminary chemical activation of the feedstock at the beginning of the process, which will effectively isolate high-quality kaolinite and quartz products, which will significantly reduce the flow of materials entering for sintering. As a result of activation, the phase composition of the kaolinite fraction has changed: the percentage of the kaolinite fraction has decreased; new phases of muscovite and sodium aluminosilicate appeared; the amount of quartz increased.

scholarly journals Kaolinite clays as a source of raw materials for the aluminum industry of the Republic of Kazakhstan

2021 ◽  
Vol 3 (319) ◽  
pp. 5-12
Author(s):  
B. K. Kenzhaliyev ◽  
◽  
L.M. Imangalieva ◽  
A.I. Manapova ◽  
M.N. Azlan ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Raw Materials ◽  
Chemical Activation ◽  
Sodium Bicarbonate Solution ◽  
Additional Source ◽  
Kaolinite Clay ◽  
Sodium Aluminosilicate ◽  
The Republic ◽  
Enrichment Techniques ◽  
The Aluminum Industry

Kaolinite clays can serve as an additional source of alumina in the Republic of Kazakhstan. The most promising is the Alekseevsky kaolinite deposit. To obtain high-quality kaolinite and quartzite products, it is necessary to develop special enrichment techniques, since no satisfactory results were achieved when using standard methods of gravitational enrichment of kaolinites. The paper presents the results of studies of the effect of preliminary chemical activation during the processing of kaolinite clays of the Alekseevsky deposit. Previously, the method of preliminary chemical activation of raw materials in a solution of sodium bicarbonate has proven itself well in the processing of various mineral raw materials. It was determined that during the preliminary chemical activation in a solution of sodium bicarbonate, changes occurred in the phase composition of the kaolinite fraction: the content of muscovite decreased almost twice; the phase of sodium aluminosilicate was formed. The dependence of the yield of Al2O3 in the kaolinite fraction on the temperature of chemical activation, duration, and the ratio of L:S and the concentration of the sodium bicarbonate solution during chemical activation. The optimal mode of preliminary chemical activation of kaolinite clay of the Alekseevsky deposit has been established: the temperature is 150 oC, the duration is 120 minutes and the concentration of sodium bicarbonate solution is 120 g/dm3. A basic technological scheme is proposed for the processing of kaolinite clays.

scholarly journals Production of non-ferrous metal concentrate in the processing of pyrite slags

2021 ◽  
Author(s):  
S.V. Gladyshev ◽  
◽  
M.N. Azlan ◽  
Keyword(s):  
Sodium Hydrogen Carbonate ◽  
Raw Materials ◽  
Chemical Activation ◽  
Ferrous Metal ◽  
Sodium Bicarbonate Solution ◽  
Mineral Raw Materials ◽  
Optimum Mode ◽  
Sodium Aluminosilicate ◽  
Sodium Hydrogen ◽  
Hydrogen Carbonate

The method of preliminary chemical activation of mineral raw materials was used in the conducted studies for the complex processing of pyritic slags. The influence of preliminary chemical activation of kaolinite clays of Alexeevsky deposit in the solution of sodium hydrogen carbonate on the separation of kaolinite and quartz fractions was studied. The temperature of 150 oC, the duration of 120 minutes, and the concentration of sodium bicarbonate solution of 120 g/dm3 should be considered the optimum mode of activation. As a result of activation, the phase composition of the kaolinite fraction changed: the percentage of kaolinite fraction decreased; new phases of muscovite and sodium aluminosilicate appeared; the amount of quartz increased.

Development of Innovative Technology for Cryogenic Grape Powders and Drinks

2021 ◽  
pp. 24-28
Author(s):  
Зоя Алиевна Яралиева
Keyword(s):  
Raw Materials ◽  
Food Additives ◽  
Climatic Conditions ◽  
Innovative Technology ◽  
High Quality ◽  
Laboratory Equipment ◽  
Scientific Center ◽  
Analytical Instruments ◽  
Organoleptic Characteristics ◽  
The Republic

Климатические условия на большей части территории Российской Федерации не позволяют выращивать виноград в открытом грунте, поэтому его завозят из южных районов страны. Производство виноградных напитков обычно сосредоточено в местах выращивания винограда, так как доставка готовой продукции в северные регионы сопряжена со значительными финансовыми затратами. В Республике Дагестан выращивают около 30% винограда в масштабах всей страны, а площадь плодоносящих виноградников занимает более 20 тыс. га. Возникла необходимость переработать виноград таким образом, чтобы полуфабрикат для изготовления напитков выдерживал длительные сроки хранения и транспортировку, отличался высоким качеством и имел небольшую массу. Разработана технология получения виноградных криопорошков, которые можно использовать в качестве пищевых добавок, для изготовления восстановленных соков и напитков. Целью исследования было создание инновационной технологии производства криопорошков для получения безалкогольных напитков. Объектом исследования стал виноград дагестанских технических, столовых и изюмных сортов. Алгоритм получения криопорошков соответствовал предложенной автором схеме: доставка винограда, отделение гребней, инспекция, мойка, дробление, замораживание жидким азотом, обезвоживание в вакуумной СВЧ-установке, криоизмельчение и фасовка. При выполнении работы определяли качественный состав сырья и криопорошков с использованием аналитических приборов и лабораторного оборудования кафедры технологии продуктов питания и учреждений Дагестанского научного Центра РАН. Определен химический состав криопорошков, полученных из винограда, выращенного в горно-долинной зоне Дагестана. Приведены физико-химические показатели напитка из криопорошка винограда. Органолептические показатели изготовленных виноградных напитков подтвердили их высокие качественные показатели. Climatic conditions in most of the Russian Federation do not allow growing grapes in the open field, therefore they are imported from the southern regions of the country. The production of grape drinks is usually concentrated in places where grapes are grown, since the delivery of finished products to the northern regions is associated with significant financial costs. Winegrowers of the Republic of Dagestan grow about 30% of grapes throughout the country, and the area of fruit-bearing vineyards occupies more than 20 thousand hectares. There was a problem to process grapes in such a way that the semi-finished product for the production of drinks withstands long storage and transportation periods, is of high quality and has a small weight. A technology has been developed for producing grape cryopowders, which can be used as food additives, for the production of reconstituted juices and drinks. The aim of the study was to create an innovative technology for the production of cryopowders for the production of soft drinks. The objects of the study were Dagestan common and raisin grapes. The algorithm for obtaining cryopowders corresponded to the scheme proposed by the author: delivery of grapes, separation of ridges, inspection, washing, crushing, freezing with liquid nitrogen, dehydration in a vacuum microwave unit, cryo-grinding and packaging. When performing the work, the qualitative composition of raw materials and cryopowders was determined using analytical instruments and laboratory equipment of the Department of Food Technology and institutions of the Dagestan Scientific Center of the Russian Academy of Sciences. The chemical composition of cryopowders obtained from grapes grown in the mountain-valley zone of Dagestan has been determined. The physical and chemical parameters of a wine drink made from grape cryopowder are given. The organoleptic characteristics of the produced wine drinks confirmed their high quality indicators.

scholarly journals MICROCLONAL PROPAGATION OF KARELIAN BIRCH AND TRIPLOID ASPEN IN VITRO

ÈKOBIOTEH ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 101-106
Author(s):  
N.S. Anokhina ◽  
◽  
V.F. Konovalov ◽  
E.R. Khanova ◽  
◽  
...  
Keyword(s):  
Tree Species ◽  
Gene Pool ◽  
Raw Materials ◽  
High Quality ◽  
The Republic ◽  
Methodological Aspects ◽  
Karelian Birch

Methodological aspects of microclonal reproduction of valuable tree species – triploid aspen and Karelian birch, which are important for enriching the gene pool of the main forest-forming tree species in the Republic and obtaining high-quality wood raw materials in the form of ornamental and decorative wood, are proposed.

scholarly journals Heat Processing and Change of Proper Indicators of Basalts

Land Science ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. p1
Author(s):  
Rashidova R K ◽  
Kurbanov Abdirakhim Ahmedovich ◽  
Aliyev T ◽  
Jiyanov A B ◽  
Turdieva O J ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Chemical Composition ◽  
Raw Materials ◽  
Practical Interest ◽  
Heat Processing ◽  
High Quality ◽  
Mineral Raw Materials ◽  
Different Color ◽  
Basalt Rock

This paper presents the results of the analysis of the quality of basalts, their heat treatment and studies of changes in the chemical composition of basalts, which leads to a change in the external color of partially processed basalt raw materials (hereinafter referred to as semi-finished product). The results of a study of purified basalt from slime, impurities and hydroxides, changes in the chemical composition of basalt rock are presented. The prospects of heat treatment of a semi-finished product and obtaining multi-colored products from mineral raw materials is shown. It was found that the optimal firing temperature of the semi-finished product, the possible options for changing the external color and the criterion points of the thermal effect at which the basalt semi-finished product changes the external shade. These statements are of great scientific and practical interest in the fact that during the heat treatment of a semifinished product, basalt easily overheats and gradually acquires a different color, which occurs to a liquids temperature and allows the future to plan to obtain high-quality multi-colored products from basalts, for example, products for design.

Development of Zoning Method for Man-Made Massifs

2021 ◽  
pp. 116-122
Author(s):  
I.A. Melnichenko ◽  
Yu.V. Kirichenko
Keyword(s):  
Raw Materials ◽  
Mining Industry ◽  
Environmental Safety ◽  
Economic Feasibility ◽  
Mineral Raw Materials ◽  
Mine Dumps ◽  
Useful Components ◽  
Processing Plants ◽  
The Republic ◽  
Overburden Dumps

Contemporary mining industry is a complex system that is constantly expanding both in terms of explored sources of mineral raw materials and in terms of developing new approaches to mining and processing of minerals. Such a buildup in the scope of tasks set for the industry, as well as the technical progress, lead to various issues related to the quality, quantity and rational use of mineral raw materials. Rationalization, in its turn, should be carried out in a phased manner through the use of comprehensive measures, one of which is reclamation of man-made wastes, represented by waste rocks, tailings, slags, dust, etc. In addition, this approach simultaneously resolves several other important challenges the industry is facing, e.g. increasing the environmental safety of mining regions and increasing the economic feasibility of production by extracting additional components from waste materials. The scope of application of such a solution to the challenge of rationalizing production is immense and can be implemented at many deposits located in the territory of the CIS due to the presence of huge volumes of waste generated by mining raw materials. These wastes were accumulated because of the absence of full-fledged technologies to extract useful components from the rock mass in the past as well as other requirements to ore conditioning than those acting today. For example, in the Republic of Bashkortostan, the overburden dumps and off-balance ores that have been created by mining enterprises amount to more than 1 billion tons, hydraulic-mine dumps of processing plants reach 50 million tons, manmade waters exceed 9 million m3 annually. At the same time, the amount of useful components contained in these man-made deposits can be up to 1.5 million tons for copper, 2 million tons for zinc, about 100 tons of gold as well as significant amounts of other associated components, including various non-metallic formations.

Studies of amorphous-siliceous rocks of the Republic of Kazakhstan as mineral raw materials in the formation of the porous structure of heat-insulating foam glass

2020 ◽  
pp. 5-9
Author(s):  
B. E. Zhakipbaev ◽  
A. S. Kolesnikov ◽  
G. S. Kenzhibaeva ◽  
N. E. Botabaev ◽  
A. N. Kutzhanova ◽  
...  
Keyword(s):  
Glass Powder ◽  
Raw Materials ◽  
Foam Glass ◽  
Insulation Material ◽  
Foam Material ◽  
Mineral Raw Materials ◽  
Blowing Agent ◽  
Siliceous Rocks ◽  
Multicomponent Glass ◽  
The Republic

Foam glass is known mainly as a cellular thermal insulation material obtained by sintering a mixture of glass powder and a blowing agent followed by annealing of the foam material. This article explores the possibility of producing heat-insulating foam glass directly from widely available amorphous-siliceous natural flasks, eliminating economically disadvantageous and energy-intensive processes of cooking and granulation of special multicomponent glass melt from the scheme of traditional technology.

scholarly journals Raw materials and feed production technology for valuable fish species in the Republic of Belarus

2020 ◽  
Vol 58 (1) ◽  
pp. 79-89
Author(s):  
V. Yu. Ageyets ◽  
Z. V. Lovkis ◽  
Z. V. Koshak ◽  
A. E. Koshak
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Fish Species ◽  
Raw Materials ◽  
Feed Additive ◽  
Modern World ◽  
African Catfish ◽  
High Quality ◽  
The Republic

The paper raises problems of production of domestic compound feed for valuable fish species. The following representatives of valuable fish species are reared in the Republic of Belarus: rainbow trout, sterlet sturgeon, sturgeon, European and African catfish. All these types need high-quality and inexpensive compound feeds. Production of such feed is developing in our country. All the feeds for valuable fish species are extruded in the modern world. A range of raw materials has been studied that can be used as part of compound feeds for valuable fish species, such as Belarusian made fish meal, dry hemoglobin, soy concentrate, and whey fat concentrate. It has been determined that Belarusian fishmeal is of high quality and not inferior in balance to the amino acid composition of imported fishmeal made in Mauritania, and in terms of leucine and isoleucine level, over 2 times exceeds the imported one. Amino acid composition of dry hemoglobin was studied. It was determined that this feed additive can be used only for balancing feed for crude protein level and practically does not contain such an important essential amino acid as methionine. Valuable fish species are predators, for this reason compound feed contain high amount of protein (up to 50 %) and fat (up to 30 %) depending on the type and age of the fish. Therefore, soy protein concentrate can be used in terms of protein content and absence of anti-nutritional substances in compound feed, and whey-fat concentrate can be used for balancing the formulation for fat content. At the same time, the need for development of such deep processing industry in our republic is noted.

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