{"title":"DÜŞEY KAYAÇ KESME SETİ İLE KOLLU GALERİ AÇMA MAKİNESİ PERFORMANS TAHMİNİ: BİR ÖRNEK UYGULAMA","authors":"Serdar Yaşar, A. Yilmaz","doi":"10.30797/MADENCILIK.493199","DOIUrl":"https://doi.org/10.30797/MADENCILIK.493199","url":null,"abstract":"Kollu galeri acma makineleri madencilik ve tunelcilik sektorunde siklikla kullanilan kazi makinelerindendir. Diger kazi makineleri gibi, kazi yapilacak formasyona uygun olarak secilmeleri gerekmektedir. Ilave olarak, formasyonda gerceklestirecekleri kazi hizlarinin proje safhasinda belirlenmesi gerekmektedir. Bu amac icin gelistirilen cesitli yontemler bulunmaktadir. Bu yontemlerden en temsili yontem olarak kabul edileni kaya kesme deneyleridir. En kesin yontemler olmalarina ragmen, az sayida arastirma merkezinde bulunmalari sebebiyle kullanimi yayginlasamamaktadir. Bundan dolayi, halihazirda bulunan kaya kesme deneylerine alternatif olabilecek yeni duzeneklere ihtiyac vardir. Bu amacla, hemen hemen tum kaya mekanigi laboratuvarlarinda bulunan hidrolik egilme preslerine bir eklenti olarak gelistirilen tasinabilir ve seri uretime uygun bir deney duzenegi olarak getirilen dusey kayac kesme seti (DKKS) tanitilmistir. Calisma kapsaminda, cesitli magmatik kayac numuneleri uzerinde konik keskiler ile etkilesimli ve etkilesimsiz kaya kesme deneyleri gerceklestirilmistir ve DKKS ile tam boyutlu kesme deneylerinin gerceklestirilebilecegi gosterilmistir. Ardindan, bir yeralti soguk hava deposunda calisan bir kollu galeri acma makinesinin kazi hizlari DKKS’de yapilan kaya kesme deneyleri ile tahmin edilmeye calisilmistir. Sonuc olarak, bu sahada calisan makinenin net kazi hizi DKKS ile gercege yakin olarak tahmin edilmistir.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46753397","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}
{"title":"TRAVERTENLERDE KAPİLER SU EMMENİN TANIMLANMASI VE SINIFLANDIRILMASI","authors":"İ. Çobanoğlu, S. B. Çelik","doi":"10.30797/MADENCILIK.493330","DOIUrl":"https://doi.org/10.30797/MADENCILIK.493330","url":null,"abstract":"","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46321029","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}
{"title":"ÇÖZÜNMÜŞ HAVA FLOTASYONU (ÇHF) TEKNİĞİ İLE TALKIN TUZLU SULARDA YÜZEBİLİRLİĞİ","authors":"Kenan Çinku, Gözde Bekçi, Orhan Ozdemir","doi":"10.30797/MADENCILIK.493169","DOIUrl":"https://doi.org/10.30797/MADENCILIK.493169","url":null,"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. Orijinal Araştırma / Original Research ÇÖZÜNMÜŞ HAVA FLOTASYONU (ÇHF) TEKNİĞİ İLE TALKIN TUZLU SULARDA YÜZEBİLİRLİĞİ FLOTABILITY OF TALC BY DISSOLVED AIR FLOTATION (DAF) TECHNIQUE IN SALT SOLUTION Anahtar Sözcükler: ÇHF, Talk, Tuzlu su.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48980763","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}
Fırat Ahlatcı, Elif Yılmaz, E. Y. Yazici, Oktay Celep, H. Deveci
{"title":"ATIK SİYANÜR ÇÖZELTİLERİNDEN ANYONİK REÇİNELER İLE AĞIR METALLERİN ADSORPSİYONU","authors":"Fırat Ahlatcı, Elif Yılmaz, E. Y. Yazici, Oktay Celep, H. Deveci","doi":"10.30797/MADENCILIK.493171","DOIUrl":"https://doi.org/10.30797/MADENCILIK.493171","url":null,"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. ATIK SİYANÜR ÇÖZELTİLERİNDEN ANYONİK REÇİNELER İLE AĞIR METALLERİN ADSORPSİYONU ADSORPTION OF HEAVY METALS FROM WASTE CYANIDE SOLUTIONS WITH ANIONIC RESINS Fırat Ahlatcıa,*, Elif Yılmaza,**, Ersin Y. Yazıcıa,***, Oktay Celepa,****, Hacı Devecia,***** a Hydromet B&PM Araştırma Grubu, Cevher ve Kömür Hazırlama Anabilim Dalı, Maden Müh. Böl., Karadeniz Teknik Üniversitesi, Trabzon, 61080, TÜRKİYE Anahtar Sözcükler: Siyanür, Atık çözelti, Ağır metaller, Reçine, Adsorpsiyon.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48653876","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}
{"title":"TUNÇBİLEK KÖMÜR YIKAMA TESİSİNDE BAZI FİZİKSEL ÇEVRE ETKENLERİNİN ARAŞTIRILMASI","authors":"A. Uçar, C. Şensöğüt, I. Ediz","doi":"10.30797/MADENCILIK.493182","DOIUrl":"https://doi.org/10.30797/MADENCILIK.493182","url":null,"abstract":"","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49540829","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}
{"title":"KAZI ARINI SINIRI OPTİMİZASYONU İÇİN GELİŞTİRİLEN YÖNTEMLER VE ÖRNEK BİR UYGULAMA","authors":"Gamze Erdoğan Erten, Mahmut Yavuz","doi":"10.30797/MADENCILIK.480083","DOIUrl":"https://doi.org/10.30797/MADENCILIK.480083","url":null,"abstract":"Kazi arini siniri optimizasyonu, yeralti maden planlama ve tasarim surecindeki optimizasyon calismalarinin baslangic noktasi olarak dusunulmekte ve mumkun olan en iyi kazi arini duzenini; madenin isletme, jeoteknik ve fiziksel kisitlamalarini hesaba katarak secip, ekonomik kârin en ust duzeye cikarilmasina odaklanmaktadir. Son 20-25 yildir dikkat cekmeye baslayan bu alan icin cok sayida algoritma ve teknik gelistirilmis olmakla birlikte, bunlar acik ocak madenciligi icin yapilan calismalarinin oldukca gerisinde kalmistir. Bu makale, oncelikle kazi arini sinir optimizasyonu icin gunumuze kadar gelistirilen yontemler uzerine ayrintili bir literatur analizi yapmakta, ardindan bir cevher kutlesi modeli uzerinde secilen bir algoritmanin uygulanmasini gostermektedir. Bu calismadan elde edilen sonuclar, simdiye kadar kazi arini sinirlarinin optimizasyonu icin gelistirilmis yontemlerin hicbirinin, henuz uc boyutta (3D) tam optimum sonuclari garanti edemedigini, cogunun sezgisel birer yontem olarak kaldigini gostermektedir.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45185496","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}
{"title":"E-ATIKLARDAN METAL KAZANIMINDA ÇÖZÜCÜLERİN VE OKSİTLEYİCİLERİN ETKİLERİ","authors":"Ayşenur Tuncuk","doi":"10.30797/MADENCILIK.480060","DOIUrl":"https://doi.org/10.30797/MADENCILIK.480060","url":null,"abstract":"Bu calisma, alternatif cozuculer kullanarak bakir, altin ve gumusun geri kazanimi icin atik merkezi islemci unitelerinin (CPU) lic sureciyle ilgilidir. Fiziksel on islemler (boyut kucultme, ayiklama) ve hidrometalurjik yontemler kullanilarak yuksek verimlerle metallerin kazanimi hedeflenmistir. Kimyasal lic testleri kapsaminda 23 tam faktoriyel tasarim testleri yurutulmustur. Metal kazanim verimi uzerine reaktif (I2, H2SO4, NH3) derisimi, oksitleyici (H2O2, (NH4)2S2O8) derisimi, kati/sivi oraninin etkileri, varyans analizi (ANOVA) ile incelenmistir, etkin degerlere bagli modeller olusturulmustur. Metal kazanimlarini arttirmak amaciyla iki asamali reaktor lici testleri yurutulmustur. Birinci asamada H2SO4+H2O2 lici ile %95,60 bakir, ikinci asamada I2+H2O2 lici ile %99,92 altin, %99,81 gumus kazanim verimleri elde edilmistir.","PeriodicalId":37481,"journal":{"name":"Scientific Mining Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47632884","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}