Scientific Mining Journal

Scientific Mining Journal

Volume 57 - No SPECIAL ISSUE (December 2018)
Flotability of Talc by Dissolved Air Flotation (DAF) Technique in Salt Solution ( Original Research )
DOI 10.30797/madencilik.493169 Kenan Çinku, Gözde Bekçi, Orhan Özdemir
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ABSTRACT

Flotation is one of the widely used mineral processing methods where hydrophobic particles are separated from hydrophilic particles using air bubbles. Since some minerals such as talc, graphite, molybdenite, hard coal, and sulphur is naturally hydrophobic, it is possible to float them without collector. The effect of flotation chemicals such as collector and frothers which are very expensive, and the water quality is very important in the flotation method. For this reason, the decrease in the amount of these chemicals for the flotation method or even not to use any of these chemicals may reduce the cost of mineral processing. Dissolved air flotation (DAF) is a clarification process that can be used to remove particles. In addition, when water scarcity and contamination are considered, water circulation and use of bore water which contains a high amount of salt, will be essential for mineral processing plants in the future. In this context, the aim of this study was to investigate the flotation behavior of natural hydrophobic mineral talc in solutions (NaCl and MgCl2) without collector using a lab scale DAF. The flotation results showed that flotation yield of talc increased 14% in the presence of salt ions. Based on the results obtained from this study, it can be concluded the effect of dissolved ions such as Na+ and Mg2+ on talc flotation is ion specific.

Adsorption of Heavy Metals from Waste Cyanide Solutions with Anionic Resins ( Original Research )
DOI 10.30797/madencilik.493171 Fırat Ahlatcı, Elif Yılmaz, Ersin Y.Yazıcı, Oktay Celep, Hacı Deveci
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ABSTRACT

In this study, removal of heavy metals (Cu, Zn and Fe) from cyanidation effluents using anionic resins was investigated. The effluent obtained (135 mg/L Cu, 196 mg/L Zn and 5.3 mg/L Fe) from a cyanide leach plant was used in tests. Cu and Zn adsorption performances (24 h.) of three different resins (Dowex 21K XLT, Purolite A193 and Purolite S992) were compared and Dowex 21K XLT was found to be the most effective resin. Kinetic tests at different dosages (1-5-10-20 g/L) of Dowex 21K XLT were carried out for 24 h. significant changes were observed to copper adsorption recoveries after 1. hour. Copper adsorption was fast in that no significant change in adsorption profile was observed after 1 h. Fifty seven percent of copper was adsorbed at 5 g/L resins. Adsorption of copper increased to 94% with increasing the resin dosage from 5 g/L to 10 g/L. Copper removal was almost complete at the highest resin dosage tested (20 g/L). Similarly, high resin dosages (≥10 g/L) appeared to be required to achieve high adsorption recoveries (≥%97) for zinc and iron. These findings demonstrate that heavy metals (Cu, Zn and Fe) can be readily removed from cyanidation effluents by using Dowex 21K XLT anionic resin.

Blast Design Based on Environmental Vibration Limits for the Rock Blasting in Urban Area ( Original Research )
DOI 10.30797/madencilik.493178 Doğan Karakuş, Tuğçe Öngen, Mehmet Volkan Özdoğan, Hayati Yenice, Ahmet Hamdi Deliormanlı, Utku İkiz
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ABSTRACT

 

Investigation of Some Physical Environmental Factors for Tunçbilek Coal Washery
DOI 10.30797/madencilik.493182 Ali Uçar, Cem Şensöğüt, İ.Göktay Ediz

ABSTRACT

As a source of energy, coal has contributed to the proliferation of significant moves in the industry, but has also led to significant environmental disadvantages as it has been used uncontrolled and improperly. Negative environmental effects occur at each stage during coal production and consumption. But coal is still an indispensable source of energy and its use is increasing for many countries because of its location in many parts of the world, reliability and inadequate renewable energy resources. If technological precautions are taken during production and clean coal technologies during consumption, damage to the environment can be minimized. Significant environmental problems arise in the process of production and preparation of coals, which are vital for Turkey in solving the energy problem. Although some environmental measures are taken against these problems, they may sometimes be insufficient. In this study, the environmental factors such as dust, vibration and noise which are not adequately emphasized but which are important environmental factors and affect more on production, environment and employees have been studied in Tunçbilek coal preparation plant of the Western Lignite Corporation (WLC), together with the identified problems and proposed solutions

Imaging and Analysis Devices for Mining Industry ( Review )
DOI 10.30797/madencilik.493197 Hatice Yılmaz, Ceren Uygun, Mehmet Tanrıverdi
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ABSTRACT

A brief introduction to the analysis devices such as Optical microscope, X-Ray Diffraction (XRD), X-Ray Flouresans spectrometer (XRF), Microprop (Scanning Electron Microscope, SEM + Energy Dispersive Spectrometer, EDS) and Mineral Liberation Analyzer (MLA) was made in this study. By giving examples of completed studies using these devices, a perspective has also been put forward on R&D studies and how problems should be approached in them mining sector.

Roadheader Performance Prediction with Using Vertical Rock Cutting Rig: A Case Study ( Original Research )
DOI 10.30797/madencilik.493199 Serdar Yaşar, Ali Osman Yılmaz
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ABSTRACT

Roadheaders are frequently used in mining and tunnelling works. Similar with other excavation machines, roadheaders should be selected properly to the relevant rock formation. In addition to the selection, cutting rates of these machines should be estimated during project phase. Several methods were proposed so far for this respect. The best choice for performance prediction is the rock cutting tests. Despite to being the best choice, these cutting tests cannot be more widespread due to non-availability in many research centers. Therefore, alternative rock cutting testing arrangements should be proposed as an alternative to present testing rigs. With this respect, vertical rock cutting rig (VRCR) which is mobile and ready for mass production was introduced as an attachment to hydraulic flexural bending machines which can be found in almost all rock mechanics laboratories. Within the scope of the study, several igneous rock samples were subjected to rock cutting test with conical picks in both relieved and unrelieved cutting mode. Finally, cutting rate of a roadheader working in an underground cold storage tunnel was predicted with cutting tests in VRCR. As a result, cutting rate of the roadheader was predicted correctly with using VRCR.

Investigation of S20 Brittleness Index in terms of the Crushability of Rocks ( Original Research )
DOI 10.30797/madencilik.493200 Ekin Köken, Hamit Aydın, Ahmet Özarslan
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ABSTRACT

The determination of rock brittleness is acknowledged as an important pre-design tool in different mining applications. The relationship between strength - brittleness is quite important in terms of the drillability, excavability and crushability of rocks. In this study, S20 brittleness index test mainly used to determine the degree of rock brittleness is investigated in terms of the crushability of rocks. The brittleness indexes used in previous studies are summarized and the relationship between these approximations and S20 brittleness index are investigated. As a result of laboratory studies performed on twelve different rock types, remarkable relations are obtained between B3, S20 brittleness index and aggregate impact value test (AIV) which are practical and highly repeatable in field studies. In consequence, a classification system is proposed quantitatively aiming to identify the crushability of rock material. The proposed classification may be used to choose jaw crusher proper to crushing – screening plant, predict abrasion and fragmentation properties of aggregates and powder factor in drilling and blasting applications executed in rock masses with good quality.

Statistical Analysis of Occupational Accidents in Turkey Mining Industry ( Original Research )
DOI 10.30797/madencilik.493212 Beril Bayraktar, Hakan Uyguçgil, Adnan Konuk
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ABSTRACT

Occupational accidents are prevalently seen in all business segments in our country. However, mining industry comparing to others draws attention due to the high fatality rates of occupational accidents. Although workers are educated and safety precautions are taken, the frequency of fatal occupational accidents in mining industry is quite high because of the labor intensive working instead of mechanized production in the mines. In this study, occupational accidents data, obtained from the Social Security Institution (SSI) annual reports between the years 2002- 2015, were examined statistically, and the mining accident rates have been compared with other sectors. Analysis show that, in spite of the regulations promulgated in the past and present, the number of occupational accidents occurred in the mining industry did not decrease. Contrarily, it is determined that mining accident and death rate per employee is seriously high when compared with other sectors. As a result of this study the necessity to do the following changes is revealed. Small scale mining should be abandoned, the mechanization ratio in mining should be increased, and mining specific measures and inspections in the occupational safety and health field should be taken.

Investigation of Occupational Diseases related to Dust in Mining with Hierarchial Loglinear Analysis: TKİ Himmetoğlu Lignite Mine Example ( Original Research )
DOI 10.30797/madencilik.493314 Mustafa Önder, Seyhan Önder, Burcu Demir İroz, Erhan Adıgüzel
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ABSTRACT

In terms of dust levels exposed to various industries dust levels that are evident in the mining industry are higher than acceptable limit values. One of the most important occupational diseases encountered in mining is pulmonary disorders due to dust. In this study, studies were carried out in order to determine occupational diseases related to dust in the lignite quarry belonging to AKSA Energy which is operating as a renter of TKİ in Göynük District of Bolu province, Göynük District. For the dust measurement in the working environment have been worked with a special laboratory. All of the obtained data were evaluated in the SPSS® 11.5 package program by the hierarchical loglinear analysis methods, the parameters that could be effective in occupational diseases related to dust were tried to be determined.

Applications of Occupational Safety at Open Pit Mining: A Case Study ( Original Research )
DOI 10.30797/madencilik.493320 Recep Erdi Şafak, Cem Şensöğüt, Yaşar Kasap
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ABSTRACT

The increase, parallel with world population, in demand for a more qualified life has caused an increase in the production of raw material and goods. As known, most of the raw materials are obtained by underground and surface mining activities. The large parts of production in quantity are carried out by open pit mining. During this process, it is possible to face hazards and high risks in terms of occupational health and safety. The accident risks of the labours should be reduced to a minimum level by proactive approaches. In this study, drilling and blasting, other mining activities such as loading and carrying are examined by the use of Checklist and L Type risk assessment methods in an opencast mining which is a part of Manyezit A.Ş (Eskişehir). All precautions that need to be taken are specified and results are given in order to reduce the risks to an acceptable level.

Investigation of International Packing and Transportation Used Rules/Standarts in Natural Stone Industry ( Review )
DOI 10.30797/madencilik.493326 İsmail Sedat Büyüksağış, Memduh Uz, Mustafa Gürsoy
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ABSTRACT

In this study, the size and packaging standards of final products used in the natural stone sector and the transportation standards used for transportation for customer delivery have been examined. Despite the fact that there are popular product sizes and packaging standards in the sector, there are no official size standards for stones. In this scope of work; blocks, plates, slabs, tiles and products of different sizes have been researched in which standard sizes of packages and casings are made, and their applications are given in detail. On the other hand, international standards exist for the transportation of packaged goods by road, rail and sea, and these are detailed in this study.

Identification and Classification of Capillary Water Absorption for Travertines ( Original Research )
DOI 10.30797/madencilik.493330 İbrahim Çobanoğlu, Sefer Baran Çelik
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ABSTRACT

The concept of capillarity is particularly important for natural building stones that can be influenced by moisture, especially through atmospheric conditions. For travertine natural stones, the values of water absorption are determined empirically as an important parameter for both indoor and outdoor use. Travertines, which have a naturally porous structure, are more sensitive natural materials than the other natural carbonate stones. Natural stones with high capillary water absorption potential in contact with water are more affected than atmospheric conditions. When the concept of general water absorption is considered, it is considered that both the absorption by weight and by volume as well as the capillary water absorption parameters may be relate to each other. This parameter is also included in the tests to be documented in CE certifications both in European countries and in countries exported to these countries. For this purpose, the TS EN 1925 test standard, adapted from the European norm, has been used in our country since 2000. This study describes the results of capillary water absorption of a porous natural building stone travertine. A capillary water sorption classification consisting of 4 categories, which may be valid for travertines using the obtained data, is also proposed in this study.

Investigation of the Solar Reflection Index Values Changes of Some Carbonate Based Natural Stones Depend on the Surface Properties ( Original Research )
DOI 10.30797/madencilik.493335 Raşit Altındağ, İbrahim Uğur, Nazmi Şengün, Deniz Akbay, Servet Demirdağ, Ahmet Coşkun, Murat Sert
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ABSTRACT

Currently, natural stones having different colour and texture properties are widely used as both exterior and interior surface and floor coverings at various thicknesses and in different surface processed shapes (polished, honed and sanded). Especially on the outer facades, the reflection and absorption of the sunlight to the environment can have considerable consequences in terms of energy efficiency and thermal comfort based on the climatic conditions of the architectural structure (seasonal temperature average, number of sunny days, average maximum temperature, average sunshine duration etc.). Within the scope of this study, samples of 5 different carbonate based (limestone, re-crystallized marble, travertine) natural stone types with different colour, texture and surface properties (polished, honed and sanded) with high commercial importance were used. In dry and saturated conditions, sunlight reflectance and heat emission values were measured and solar reflection index values were calculated. It has been observed that the solar reflection index values, calculated for dry and saturated conditions varies considerably depending on the changes in surface properties.

Natural Stone Production and Water Interaction ( Original Research )
DOI 10.30797/madencilik.493682 Mahmut Mutlutürk
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ABSTRACT

Water is a main component of the human body as well as a part of the human life. Water is needed in the production of industrial products as well as in the production of food products such as cereals, fruits, vegetables and meat for nutrition. Water is used in various stages from the beginning to the use in the finished product steps in the natural stone production. The main subject of this investigation is used water in the end product of natural stone of several steps of production. Today, the amount of water needed in the process from the production of a product to its use is called as Virtual Water. There is no research in the natural stone sector, which is quite common in the food sector, and the share of the amount of water used by the natural stone quarry on the final product is uncertain. In this study, has been tried to measure the amount of water used during drilling, cutting and making marketable size in the natural stone quarry and sizing, polishing and other operations of natural stones in the factory. As a result of this study, the amount of Virtual Water required to obtain marketable sized of natural stones was calculated.

Global Trends in Mining Regulations and Application of Turkey ( Review )
DOI 10.30797/madencilik.493700 Mustafa Topaloğlu
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ABSTRACT

Developments in the world in mining law, the approach of state-run mining and encouragement of private sector mining have been a big factor. In addition, it may not be denied the effect of the concept of sustainable development that grew under the pressure of environmental in mining law reform. The reforms starting from Chile to Mexico and Peru as a south American Law Model is cited as an example. The World Bank and the other international assosiciations take some initiatives and endeavour preparing a unique mining law in the name of lex minarele. Nevertheless the expectations of goverments from mining sector, environmentalist and the other pressure groups pretend a vital role on the formation and amendment of mining law regulations. The amendments and reforms on mining law regulations are subjected to be measured and analyzed in the name of Regulatory Impact Assestment. In our work may be found an overall evaluation about the laws from the countries which made influential changes about reform in mining law.