Browsing Madencilik ve Maden Çıkarma-Makale Koleksiyonu by Issue Date
Now showing items 1-20 of 33
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Petrogenesis of volcanic rocks, and clay mineralogy and genesis of underclays, Sile Region, Istanbul, Turkey
(E Schweizerbartsche Verlags, 2002)In the bile Region, the basement rocks are represented by Lower-Middle Devonian limestones, gradually grading upward into shale; Mesozoic rocks composed of Lower Triassic basal conglomerates and sandstones, and Upper ... -
Occurrence and properties of natron in the Miocene lacustrine Beypazari basin, Turkey
(E Schweızerbartsche Verlags, 2003)Natron, Na2CO3 . 10H(2)O, is a rarely forming evaporite mineral, which precipitates under the unique physicochemical conditions of Na wt.%, temperature and HCO3/CO3. Natron is observed in the upper parts of the lower trona ... -
Differential separation of albite from microcline by monovalent salts in HF medium
(Soc Mining Metallurgy Exploration Inc, 2003)Na-feldspar (albite) and K-feldspar (microcline or orthoclase) are major feldspar minerals with identical crystal structures and physico-chemical properties. Flotation appears to be a unique method of separating these ... -
Varying depositional environments of gypsum successions in the Upper Miocene Eskiehir-Sivrihisar lacustrine basin, NW Turkiye
(E Schweızerbartsche Verlags, 2003)The basement rocks of Eskisehir-Sivrihisar basin are made of Upper Paleozoic metamorphic rocks and Upper Cretaceous ophiolite complex. These rocks are overlain by Middle Miocene sedimentary rocks the base. Upper Miocene-Pliocene ... -
Effects of bivalent salts on the flotation separation of Na-feldspar from K-feldspar
(Pergamon-Elsevier Science Ltd, 2003)Despite similarities in the physical and physico-chemical properties of Na- and K-feldspars, their flotation separation with monovalent ions exhibited a reasonable success. Further studies have been therefore initiated to ... -
Recovery of zinc from waste material using hydrometallurgical processes
(Amer Inst Chemical Engineers, 2003)A lead-zinc ore deposit in Balikesir/Balya, Turkey, was mined and abandoned almost 70 years ego. Nearly 1, 000, 000 tons of flotation tailings and 300, 000 tons of slag, which contain considerable amounts of zinc remain. ... -
Selective separation of sodium and potassium feldspar minerals from orebodies
(Trans Tech Publications Ltd, 2004)Feldspar minerals are major commodities used in the production of glass and ceramics. A major proportion of feldspar rocks such as granites, pegmatites and nepheline syenites embody both Na-feldspar (Albite) and K-feldspar ... -
Treatment of lead mine waste by a Mozley multi-gravity separator (MGS)
(Academic Press Inc Elsevier Science, 2005)Increasing environmental awareness and pressure is focusing attention on metal removal leading to the accelerated development of contaminated land reclamation technologies. The majority of wastes associated with base metal ... -
Concentration of K-feldspar from a pegmatitic feldspar ore by flotation
(Elsevier Science Bv, 2006)Abundant reserves of Na-feldspar (albite) and K-feldspar (orthoclase or microcline) are found in granites, syenite, tracite and pegmatites. As both feldspar minerals have similar chemical structure and physicochemical ... -
Surface vs. bulk analyses of various feldspars and their significance to flotation
(Elsevier Science Bv, 2008)Cationic separation of Na-feldspar (albite) and K-feldspar (microcline) was earlier reported to be possible in the presence of monovalent salts. However, contrary to this result, the floatability of a series of K-feldspar ... -
A comparative study on the estimation of shear strength of rock masses using rock SSPC system and Hoek-Brown criterion
(2011)The shear strength of rock masses has vital importance for geotechnical projects such as slope stability, foundation and tunnels. The shear strength of the jointed rock mass can be estimated by different methods including ... -
Effect of H2O2 and nash addition to change the electrochemical potential in flotation of chalcopyrite and pyrite minerals
(Taylor & Francis Ltd, 2011)The floatability of sulfide minerals can be affected by the redox conditions on particle surface and in the pulp and can be used as one of the parameters for the separation of sulfide minerals. In the present study, the ... -
Determination of grindability characteristics of zeolite
(Oficyna Wydawnicza Politechniki Wroclawskiej, 2011)In this study grindability of zeolite was studied. The work index of zeolite was determined for three different test sieves. In terms of work indexes, there was insignificant difference between the test sieves. Additionally, ... -
Beneficiation of quartz waste by flotation and by ultrasonic treatment
(Oficyna Wydawnicza Politechniki Wroclawskiej, 2011)Quartz is one of the most important industrial minerals used in glass and ceramic industries and high quality quartz are preferred. Impurities from quartz are usually removed by magnetic separation or flotation. This study ... -
Role of starch and metabisuphite on pure pyrite and pyritic copper ore flotation
(Oficyna Wydawnicza Politechniki Wroclawskiej, 2012)Depression of pyrite is very important in sulphide ore flotation. This paper investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite ... -
Evaluation of Turkish bentonite for removal of dyes from textile wastewaters
(Oficyna Wydawnicza Politechniki Wroclawskiej, 2012)Removal of reactive dyes from textile industry wastewaters is a great economic and environmental challenge. In this study, systematic adsorption tests were carried out using natural and modified bentonites to remove a ... -
Interaction of sodium ions with feldspar surfaces and its effect on the selective separation of na- and k-feldspars
(Taylor & Francis Inc, 2012)K-feldspar and Na-feldspar exhibit similar mineralogical, chemical and surface properties. Froth flotation is known to be the only technique to enable their separation. Our earlier studies revealed a good selectivity in ... -
Application of generalized regression neural networks in predicting the unconfined compressive strength of carbonate rocks
(Springer Wien, 2012)Measuring unconfined compressive strength (UCS) using standard laboratory tests is a difficult, expensive, and time-consuming task, especially with highly fractured, highly porous, weak rock. This study aims to establish ... -
Classification of dimension stone wastes
(Springer Heidelberg, 2012)For countries in which the stone industry is well developed, opposition to quarry and plant waste is gradually increasing. The primary step for waste control and environmental management is to define the problem of concern. ... -
Modeling of tensile strength of rocks materials based on support vector machines approaches
(Wiley, 2013)In the predicting of geological variables, artificial neural networks (ANNs) have some drawbacks including possibility of getting trapped in local minima, over training, subjectivity in the determining of model parameters ...
