Scientific Mining Journal最新文献_第3页

An example of examining the effect of tunnels on each other in large diameter double tube tunnels excavated in weak soils with 3D numerical analysis, Evaluation of Bolu Tunnel support systems 以软弱土中开挖的大直径双管隧道为例，采用三维数值分析方法研究隧道间的相互影响，对博鲁隧道支护体系进行了评价

Scientific Mining Journal Pub Date : 2022-05-09 DOI: 10.30797/madencilik.1054714

E. B. Aygar

{"title":"An example of examining the effect of tunnels on each other in large diameter double tube tunnels excavated in weak soils with 3D numerical analysis, Evaluation of Bolu Tunnel support systems","authors":"E. B. Aygar","doi":"10.30797/madencilik.1054714","DOIUrl":"https://doi.org/10.30797/madencilik.1054714","url":null,"abstract":"Bolu Tunnel is located on the Ankara-Istanbul Highway projects which work started in 1993 and was opened to traffic in 2007. It was built as a 3-lane double tunnel. The tunnel lengths of the right tunnel are 2788 m and the left tunnel is 2954 m respectively. During the construction of the Bolu Tunnel, it was exposed to 2 earthquakes, and the Elmalık section of the tunnel, located at the entrance of Ankara, collapsed after the 12 November 1999 Düzce Earthquake. After this collapse, the tunnel route was changed. The Bolu Tunnel geologically passes through the tectonic block between the North Anatolian Fault Line mainline and the Düzce Fault. While the Istanbul side of the tunnel (Asarsuyu entrance) is located within the metacrystalline basement rocks, the Ankara side (Elmalık entrance) is located within the sedimentary rocks. These two units of the tunnel are cut by the Bakacak fault. At the entrance of Elmalık, where the biggest problems occurred during the excavation phase of the tunnel is located Elmalık fault.In this sectipn deformations of up to 1.2 m.. In addition, during the fault crossing of the Elmalık right tunnel, a collapse occurred in 1996, and in the 12 November 1999 Düzce Earthquake, the Elmalık left tunnel was completely closed. The problems experienced and the support systems developed in the Bolu Tunnels, which were designed with the New Austrian Tunneling Method, contain very valuable information in terms of tunneling. Within the scope of this study, Bolu Tunnel support systems were examined in 3D with the Flac3d program, the effect of the two tunnels on each other, the deformation changes in the top heading, bench and invert excavations were revealed.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41403336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Divriği A-Kafa ve Ekinbaşı yeraltı demir ocaklarında uygulanmakta olan üretim yönteminin ve rezerv kaybının değerlendirilmesi 地下铁点A水头及等效水头的生产方法及备用损失评估

Scientific Mining Journal Pub Date : 2022-05-09 DOI: 10.30797/madencilik.1085138

Atilla Ceylanoğlu, B. Erdem, Bahadır Şengün, Aydın Karatepe, M. Yayla

引用次数: 0

Pomzadan alümina üretiminin hidrometalurjik yöntemlerle araştırılması 用氢化乙烯生产粉末铝的检验

Scientific Mining Journal Pub Date : 2022-04-25 DOI: 10.30797/madencilik.1061751

Muhammed Kürşat Aydemi̇r, Murat Erdemoglu

{"title":"Pomzadan alümina üretiminin hidrometalurjik yöntemlerle araştırılması","authors":"Muhammed Kürşat Aydemi̇r, Murat Erdemoglu","doi":"10.30797/madencilik.1061751","DOIUrl":"https://doi.org/10.30797/madencilik.1061751","url":null,"abstract":"Kayseri’den sağlanan, pomzadan hidrometalurjik yöntemlerle alümina üretimi araştırılmıştır. Başlıca %64,64 SiO2 ve %14,85 Al2O3 içeren pomza örneği su, HCl, H2SO4 ve HNO3 çözeltileriyle liç edilmiş ve alüminyum hiçbir ortamda kazanılamamıştır. Mekanik olarak aktifleştirilmesi amacıyla pomza 2-60 dk aralığında değişik sürelerde gezegensel bilyalı değirmende aşırı öğütülmüştür. Aşırı öğütülmüş pomza örnekleri özdeş koşullarda değişik asit çözeltilerinde liç edilmiş ve 60 dk aşırı öğütülmüş pomza örneğinin HCl çözeltisinde liçi sonucunda alüminyumun %66,40’sı asidik sulu çözeltide kazanılmıştır. . Alüminyum kazanımını arttırmak amacıyla, süre, asit derişimi ve sıcaklık değişkenlerinin etkisi araştırılmıştır. Böylece, 4 M HCl çözeltisinde, kaynama sıcaklığında ve 24 saatte yapılan liç işlemiyle alüminyum kazanımı %91,37’ye yükselmiştir. Bu yüklü liç çözeltisinden evaporasyon yöntemiyle AlCl3 tuzu çöktürülmüş ve bu tuz 1200 °C’de 3 saat kavrularak, %62,87 Al2O3 içerikli bir pomza alüminası ilk kez üretilmiştir. Üretilen pomza alüminasında sodyum ve potasyum içerikleri düşük ancak demir ve kalsiyum içerikleri ise çok yüksektir. Sonuç olarak, pomzadan alümina üretimi amacıyla mekanik aktivasyon, asit liçi, çözelti saflaştırma, çöktürme ve kavurma işlemlerini içeren temel bir akım şeması önerilmiştir.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49388578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The System of Pneumatic Pre-Stressed Timber Crib Applied In TTK 气动预应力木槽系统在TTK中的应用

Scientific Mining Journal Pub Date : 2022-03-07 DOI: 10.30797/madencilik.991741

Esma Hacer Evkaya, Erdoğan Kaymakçi

引用次数: 0

Gaining Critical Raw Materials to Circular Economy by Recycling 循环利用获得循环经济的关键原材料

Scientific Mining Journal Pub Date : 2022-02-22 DOI: 10.30797/madencilik.982123

A. Akcil, Ceren ERÜST ÜNAL, Mediha Demet Okudan

引用次数: 1

Uzak Kuzeydeki Plaser Mevduatlarının Tarama Teknolojisi 北方远程砂矿能力的扫描技术

Scientific Mining Journal Pub Date : 2022-02-22 DOI: 10.30797/madencilik.1025658

Ravil Zinnurovich Nafi̇kov, Victor Evgenievich Ki̇slyakov, Aleksandr Konstantinovich Ki̇rsanov, Ekaterina Vasilevna Shevni̇na, Anastasiya Olegovna Ivanchuk, Pavel Viktorovich Katyshev, Umardzhon Riezidinovich Teshaev

{"title":"Uzak Kuzeydeki Plaser Mevduatlarının Tarama Teknolojisi","authors":"Ravil Zinnurovich Nafi̇kov, Victor Evgenievich Ki̇slyakov, Aleksandr Konstantinovich Ki̇rsanov, Ekaterina Vasilevna Shevni̇na, Anastasiya Olegovna Ivanchuk, Pavel Viktorovich Katyshev, Umardzhon Riezidinovich Teshaev","doi":"10.30797/madencilik.1025658","DOIUrl":"https://doi.org/10.30797/madencilik.1025658","url":null,"abstract":"The authors consider the problem of reducing the dredge performance when operating at subzero air temperatures. This problem is particularly relevant for deposits located in the Far North, where the dredging season is limited by climatic conditions. During the period of subzero air temperatures dredge performance decreases significantly due to the icing of dredge structure. In consequence, dredging operations are terminated until the occurrence of favorable conditions for work. In this regard, the authors propose a method for isolating the open-pit mine with a hangar made of contemporary construction materials. Cellular polycarbonate, which has several advantages, was chosen as the most promising material for insulating dredging works. The article offers the technical and technological solutions for the proposed method of extending the dredging season. The costs of a dredge hangar for dredges of different sizes and the annual cost of its movement are calculated. A method has been developed for determining the optimal maneuvering angle of the dredge and the width of the single face, whose values depend on the type of dredge and the gold content in the sand. The areas of dredge hangars are determined by the graphical-analytic method. The article presents an example of the air temperature dynamics in a dredge hangar during the year, as well as determines the duration of the mining season.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48238272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Turbulence models and simulation method in the CFD simulation of 75-mm hydrocyclone 75-mm旋流器CFD仿真中的湍流模型及仿真方法

Scientific Mining Journal Pub Date : 2022-02-10 DOI: 10.30797/madencilik.971842

S. Kang, Kwang Chol Ki̇m, Sokchol Ryom, J. Ri

引用次数: 2

Mermer tozunun kompozit plaka üretiminde kullanımı: Mermer tozu içeren dolgu karışımının kavurma koşulları ile plaka fiziksel özellikleri arasındaki ilişki Mermer粉尘复合板生产中的应用：吸附条件与Mermer粉尘物理性能的关系

Scientific Mining Journal Pub Date : 2022-01-24 DOI: 10.30797/madencilik.1016702

Sedanur Baş, Taki Güler, Selçuk Aktürk

{"title":"Mermer tozunun kompozit plaka üretiminde kullanımı: Mermer tozu içeren dolgu karışımının kavurma koşulları ile plaka fiziksel özellikleri arasındaki ilişki","authors":"Sedanur Baş, Taki Güler, Selçuk Aktürk","doi":"10.30797/madencilik.1016702","DOIUrl":"https://doi.org/10.30797/madencilik.1016702","url":null,"abstract":"Marble dust generated during slab cutting as reject causes significant environmental problems due to increased reactive surface area. It has closer size distribution with micronized quartz filler used in composite slab. Owing to its high hardness, micronized quartz production is an energy intensive process. This study was conducted to investigate the applicability of marble dust in composite slab production together with micronized quartz as filler. The filler mixture was roasted to mitigate drawback arising from low hardness of marble dust. XRD characterization revealed that phases in roasted filler were wollastonite, larnite, calcio olivine, quicklime and free quartz depending on the roasting temperature and time. Physical tests were applied to clarify the effect of sinter phases on slab properties. Physical properties were determined to retrogress as the roasting temperature increased to 1100°C possibly due to rate of free lime in roasted filler, and then improved again reaching peak point at 1200°C. They ameliorated by increasing roasting time at 1200°C. Larnite and quartz were determined to be effective on improved physical properties than wollastonite and calcio olivine.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45551032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Vessel nozzle parameter effects analysis on the ore transportation concentration for deep-sea mining 深海采矿船喷嘴参数对矿石运输浓度的影响分析

Scientific Mining Journal Pub Date : 2022-01-04 DOI: 10.30797/madencilik.992728

Yi Zeng, Hailiang Xu, Bo Wu

引用次数: 0

Recovery of lithium from ores and brines 从矿石和卤水中回收锂

Scientific Mining Journal Pub Date : 2022-01-04 DOI: 10.30797/madencilik.1010286

O. Celep, E. Y. Yazici, H. Deveci

{"title":"Recovery of lithium from ores and brines","authors":"O. Celep, E. Y. Yazici, H. Deveci","doi":"10.30797/madencilik.1010286","DOIUrl":"https://doi.org/10.30797/madencilik.1010286","url":null,"abstract":"Due to its different properties (low electrode potential and specific heat capacity), lithium is widely used in many industries (battery, ceramic and glass industry, lubricating greases, polymer, metallurgy, air treatment). In recent years, due to the developing technology, the demand for lithium has increased with its use in new fields (electric vehicles, grid storage). Therefore, lithium has been included in the critical raw materials list by the European Union Commission. Lithium production is mostly carried out from brines and ores (i.e. such as spodumen, lepidolite, zinvaldite, ambligonite, pedalite). Also, in resent years, it is produced from secondary sources such as lithium ion batteries. Lithium recovery from ores or concentrates such as spodumen is commonly accomplished by the sulfuric acid/roasting process. In this study, the importance of lithium as a critical raw material, resource potential of lithium in the world and Turkey, and industrial processes for production of lithium from ores/brines are reviewed in detail. Previous studies on the recovery of lithium from ores and brines are discussed. In addition, process flowsheets of various industrial plants for the recovery of lityum in the world are presented.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49458133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0