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DOI: http://dx.doi.org/10.20534/ESR-17-1.2-208-211
Bekpulatov Javlon Mustafoquliyevich, Tashkent state technical university, Tashkent, Uzbekistan Akhmedov Khamid, State company «Research institution of mineral resources»,
Tashkent, Uzbekistan Matkarimov Sokhibjon Turdaliyevich, Tashkent state technical university, Tashkent, Uzbekistan E-mail: [email protected]
Studing material composition and leaching methodics trial ores deposit of beshkuduk (Uzbekistan)
Abstract: The article presents the study of the material composition and technology of enrichment of ore samples field Beshkuduk (Uzbekistan). Material composition of the samples was studied using semiquantitative spectral, chemical, rational, and mineral analysis. Established that the main part of the gold to be in ultradispersed state. A small part of concentrated isolated grains (formed by combining micron gold particles) that are related in dimension to the small class, have a plate-like, irregular, elongated shape with a perforated, spongy structure.
Keywords: leaching, enrichment of ore, mineral analysis, rock-forming minerals, crushing, screening, hypogene minerals, concentrate isolate grains.
Technological test No. 1 before testing was prepared by a standard technique of fig. 1. At the same time samples for the mineralogical analysis were selected, and also average tests for production of various analyses are allocated. The material structure of test was studied by means of semi-quantitative spectral, chemical, rational and mineralogical analyses.
Results of the semi-quantitative spectral analysis of average test of ore are given in tab. 1.
Table 1. - Results of the semi-quantitative spectral analysis of ore
Elements Contents,% Elements Contents,%
Silicon >1 Vanadium 0,004
Aluminum >1 Chrome 0,01
Magnesium >1 Lead 0,002
Calcium 0,8 Antimony
Iron >1 Arsenic 0.06
Manganese 0,06 Zinc 0,008
Nickel 0,004 Gallium 0,001
Cobalt 0,003 Sodium >1
Titan 0,2 Kalin >1
Molybdenum - Copper 0,004
Zirconium 0,004 Barium 0,2
The full chemical analysis of tests of ore is provided in tab. 2.
Table 2. - Results of the chemical analysis of ore
Name of a component Contents in test,% Name of a component Contents in test,%
Silicon dioxide 60,5 Sodium oxide 2,66
Iron shaft 5.2 Oxide ofphosphorus (+5) 0,16
Oxide of iron (+3) 6,08 Carbon oxide (+4) 0,77
Oxide of iron (+2) 1,23 Sulfur the general 0,36
Titanium dioxide 1,03 Oxide of sulfur (+6) 0,89
Manganese oxide 0,11 H2O gigr.. 0,83
Alumina 15,33 item pct. 4,4
Calcium oxide 1,72 Gold, g/t 6,5
Magnesium oxide 1.6 Silver, g/t 4,0
Potassium oxide 3,76
Studing material composition and leaching methodics trial ores deposit of beshkuduk (Uzbekistan)
The standard technique developed IRGIRAREMET [1], con- The rational analysis was carried out on the ore crushed to fine-
cluding in consecutive carrying out the following operations has ness of 85% of a class — 0,074mm.
been applied to carrying out the rational analysis: cyanation, alkaline Results of the rational analysis of average test of ore are giv-
processing with the subsequent cyanation, acid processing and then en in tab. 3. processing by nitric acid with the subsequent cyanation, the acid rest.
Table 3. - Results of the rational analysis of ore on gold and silver
Form of finding of noble metals and nature of their communication with ore components Placement
Gold Silver
g/T % g/T %
Gold, silver in the form of free metal grains and in the form of joints with ore components 6,08 93,4 2,44 61,1
The gold, silver associated with minerals and chemical compounds of antimony and arsenic, silver sulfosalts - - - -
The gold, silver connected with carbonates, oxides, hydroxides iron and manganese 0.01 0,2 0,44 11,1
The gold, silver which are thinly interspersed in pyrites and arse-nopyrite 0,25 3,9 0,68 16,7
The gold, silver interspersed in quartz Alumo-siliciums, etc. rock-forming minerals 0,16 2,5 0,44 11,1
Total in ore: 6,5 100 4.0 100
As appears from tab. 3, gold in test for 93,4% is presented by cyanic forms, silver — only for 61,1%. A considerable part of silver of11,1% is released after salt acid processing. 3,9% of gold and 16,7%
of silver are connected with sulfides (generally with pyrites). 2,5% of gold and 11,1% of silver are connected with rock-forming minerals.
Figure 1. The scheme of preparation ore devices to tests For clarification of distribution of gold and silver on fineness sieve analysis. Results of the sieve analysis of average tests of ore are classes initial ore (fineness the 3-0th), has been subjected to the given in tab. 4.
Table 4. - Results of a sieve of the analysis of average tests of ore
Classes of fineness, mm Exit,% Components, t/t Placement,%
gold silver gold silver
-3+2,5 16,0 4,75 3,87 11,72 15,48
-2,5+1,5 32,0 6,68 5,16 33,0 41,29
-1,5+1,0 13,0 5,58 2,84 11,19 9,22
-1,0+0,5 15,0 9,59 4,13 22,22 15,48
-0,5+0,25 11,0 5,35 2,58 9,08 7,1
-0,25+0,1 9,0 6,18 3,23 8,58 7,26
-0,1+0,063 3,0 6,68 3,87 3,11 2,9
-0,063+0 1,0 7,28 5,16 1,1 1,27
Ore -3+0 100,0 6,5 4,0 100,0 100,0
Apparently from tab. 4, in ore test the content of gold and silver rather low in large classes. In a class of — 0,063+0 mm the content of gold and silver increases to 7,28 and 5,16 g/t respectively. An exit of small classes -1+0 mm is insignificant — 4,0%, the main part of gold and silver is connected with classes in limits -2,5+0,1mm — 80,35%.
Material of test consists from strongly changed, the on ferrous, silicate — chlorite, the siliceous and partially the arbitrations ofbreeds.
Test belongs to gold-bearing, changed type of ores.
For the purpose of definition of mineral composition of ore have been used: material of average test of the ore disseminated on fineness classes, gravitation concentrate, the magnetic fraction, samples which are selected from damask material, the transparent and polished micro sections, mono mineral tests with attraction of spectral, chemical, atomic and absorbing analyses and the electronic microprobe «JEOL» IGG AC RUz.
Distinctive feature of ore is the grains (the aggregate consisting from «p» fine particles) of a native gold that isolated, concentrated
form thinly lamellar, perforated allocations at which holes are filled and grew together with micas, a hydra with oxides, oxides of iron and arsenic.
As test is significantly oxidized, the most widespread hyper gene minerals are iron hydroxides — getit, gidrogetit. Less widespread minerals of an ore origin are skorodit, yarozit, difficult copper and ferruterous and aluminum hyper gene compounds and silicates oflead. Also micaceous minerals of iron and tin meet in single signs.
Hypogene minerals — pyrites, arsenopyrite — meet in single and rare signs in the form ofrelicts in products ofthe transformations.
The main nonmetallic minerals of test are quartz, sericite, field spars, chlorite.
Accessory minerals are provided generally by apatite, a monocyte and, partially, zircon and sfeny.
The list of the minerals composing ore, their quantitative ratios, the sizes of grains and mono mineral aggregates are provided in tab. 5.
The chemical composition of some above-mentioned attendees of minerals is given in tab. 5. The analysis is made by the electronic microprobe.
№ n/n Name of minerals Contents,% The sizes of grains in mm
In present Prevails
from to from to
1 Gold native grain unit <0,001 0,5 Thinly -and ultradisperse
2 Iron native grain unit 0,001 0,03
3 Tin native grain unit 0,001 0,01-0,02
4 Hematite grain size 0,01 0,1
5 Pyrites Relic grains 0,001-0,03
6 Arsenopyrite grain size Relic and fine-crystalline
7 Galenite grain unit 0,01 0,02
8 Barisilit grain size Fine-crystalline
9 Skorodit grain size Fine-crystalline
10 Gidrogetit + getit -6,0 0,001 1,0 0,05 0,2-0,3
11 Complex hydro-aluminosilicates of iron + are yarozit by potassium - sodium -3,0 Fine-crystalline
12 Quartz 29,0 0,001 0,5 0,01 0,2
13 Plagioclase sour and the main 24,0 0,05 0,4 0,05 0,3
14 Sericite 22,5 Fine-scaled
15 Chlorites 6,0 Fine-scaled
16 Orthoclase 5,6 0,1 1,0 0,2 0.5
17 Calcite 1,8 Fine-crystalline -0,3
18 Rutile 1,0 0,001 0,03 0,01 0.02
19 Apatite 0,4 0,001 0,05 0,01 0,02
20 Monocyte and other rare lands 0,4 0,001 0,03
21 Zircon grain unit 0.001 0,1 0,03
22 Sfen grain unit 0,001 0,05 0,03
Table 5. - Approximate quantitative ratios of the minerals composing ore, the sizes of their grains and mono mineral units of the field Beshkuduk, tests No. 1
Formation of functional-consumer complex uniforms schoolchildren
Conclusions:
1. The main valuable component oftest is gold which is connected, generally with oxides and hydroxides ofiron and arsenic. Perhaps, pyrites and arsenopyrite were primary gold-bearing minerals.
2. The main part of gold to be in an ultra disperses state. A small part of the concentrated isolated grains (is formed due to association of micron particles of gold) belonging on dimension to the small
class have the lamellar, wrong, extended form with perforated, spongy structure. Their dimension doesn't exceed 0,1-0,5 mm.
3. The main hyper gene ore minerals are getit and gidrogetit.
4. Widespread nonmetallic minerals are quartz, sericite, chlorites.
5. The high content of scaly releases of sericite and chlorite, and also filling of a time with them perforated, concentrated gold prevents ore enrichment.
References:
1. Zelenov V. I. Technique of researches of gold-bearing ores. - M, "Subsoil", - 2001.
2. Lodeyshchikov VV Extraction of gold from persistent ores and concentrates. - M, "Subsoil", - 2011. - 179-186 p.
3. Abramov A. A., Leonov S. B. Enrichment of ores of non-ferrous metals. - M, "Subsoil", - 2000.
DOI: http://dx.doi.org/10.20534/ESR-17-1.2-211-213
Muminova Umida Tuxtasinovna, candidate for technical sciences, Tashkent Institute of Textile and Light Industry, E-mail: [email protected]
Formation of functional-consumer complex uniforms schoolchildren
Abstract: This article is devoted to solving the issue of integrated design and manufacture of uniforms for students of technology. Studies have been done taking into account regional peculiarities klimogrammy Republic, taking into account the development of functional and consumer complexes and situational design to ensure maximum comfort of consumers' uniforms.
Keywords: uniforms, heat balance, functional and consumer complexes, comfortable environment, contingency planning, socks conditions, the local mentality.
In the context of the implementation of the national clothing industry competitiveness modernization program relevant issues and improve the quality of finished products. For the current state of the domestic children's clothing market is characterized by a dominant share of imported goods. The main reasons for this are: quality workmanship and appearance of domestic products often does not meet the needs of consumers; lag and mismatch requirements of children's clothing and fashion trends; limited range of raw materials for the production of uniforms for students.
The urgency of this problem is determined by what is now widely discussed the need for introducing a single uniform, meeting modern requirements of functional consumer complex and provides a comfortable fit conditions. It is necessary to take into account the great importance of a unified form as part of the educational process of the educational institution.
This issue devoted to the work E. B. Koblyakova, H. H. Ka-milova, L. P. Shershneva, N. S. Makeeva, I. V. Cherunova, L. K. Kuat-bekova, L.Sh.Shamuhitdinova, N. Y. Sukontseva, S. V. Kurenova, E. V. Baskakova, S. A. Goncharova, Yu. A. Matsievska and a number of other scientists. But in these studies uniforms regarded as normal wear and special studies the value of uniforms as a tool in the educational and learning process and the mechanism for the formation of the complex requirements for the manufacture of uniforms for students of technology, taking into account local conditions and socks mentality were not carried out.
Prevailing practice techniques and methods of integrated design and manufacturing of children's clothing technology is not enough focus on the requirements of this category of consumers and cannot be used without a fundamental information support and substantial improvements for a number of reasons. There is a change of priorities and social values: to uniform requirements for pupils of different age and gender groups is significantly differenti-
ated. The situation of consumption of products children have their own specificity, which must take into account the conditions and the time of the socks, the environment and other factors ensures maximum comfort uniforms consumption.
In this part of the work will be considered by the conditions that create the optimum thermal comfort level. General equations, based on which will be calculated, at any level of activity and any kind of uniform, all interconnection environment (air temperature, air humidity, its relative speed, etc.), which will create the optimum thermal comfort will be displayed [1].
Since the thermal comfort is the main purpose of socks students in Uzbekistan, the development of functional and consumer complexes uniforms for the students were made to investigate the comfort of man. The research was carried out a series of experiments, where the environment has been measured in the real world wear uniforms, and at the same time, the participants were asked to express their opinion of their thermal sensation on special scales. Then, research results were processed and determined the optimum temperature for klimogramm the region where conducted environmental studies for the actual group (Table).
So, one of the key points in the design of children's products is the account information structure in climatic conditions. Using the table structure of the climate in different classes of the weather, used in medical climatology highlighted temperatures and determined the distribution of weight and grade of the weather for the area, both during the year and by month. For example, the distribution of classes of the weather and their weight within a year: d1 — very cold temperate humid days; d2 — cold moist, moderately humid days; d3 — moderately dry, semi-moist and moderately humid days; d4 — warm, dry, semi-moist and moderately humid days; d5 — very warm, dry, semi-dry, moderately wet and humid days and d6 — hot, dry, dry and moderately humid days.
