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Froth flotation is an effective process for separating valuable from gangue minerals. Studies show that the performance of froth flotation is affected by the froth structure, and has a strong relationship with visual information of the froth surface. The determination of the froth structure, therefore, plays a vital role for controlling the process. Extensive studies have shown that computer-based vision technology is a robust, non-intrusive and cost effective approach for monitoring and controlling of flotation c...

The paper deals with an evaluation of flotation application suitability in the sludge decontamination from the Cerny Prikop stream situated in the City of Ostrava (Czech Republic). Application of flotation on the given samples is highly effective and the acquired results are excellent. We used 2 conventional flotation collectors (Montanol 551, Flotakol). Flotation of organic pollutants is very effectual and more than 75 \% of hydrocarbons C10 – C40, 70 \% of PCB and 80 \% of PAH from the sediments was removed.

In the present study collection rate constant (kc) was modeled as a function of the most significant operating variables which affect gas dispersion in a flotation column (i.e. superficial gas velocity, slurry density (solids\%) and frother dosage/type) using artificial neural network (ANN) and statistical techniques. Experiments were performed in an industrial flotation column (4 m in diameter and 12 m in height) in rougher circuit of a copper concentrator. RTD studies using a radioactive tracer have already conf...

Five honey samples were analyzed using inductively coupled plasma optical emission spectrometry (ICP-OES). The concentrations of analytes in the digests (seventeen minerals), obtained via optimized dry decomposition of honey samples, were quantified for each honey.

This paper deals with the effect of the addition of lead nitrate and ultra-fine grinding on the cyanidation of an antimonial refractory gold and silver ore. The results indicated that the recovery of gold was enhanced by 10\%, but, silver extraction did not improve with adding lead nitrate or increasing its concentration. Fine grinding (e.g. down to-5$\mu$m) did not produce the desired effect on the extraction of Au and Ag.

This study presents an evaluation of the Egyptian quartz deposits from Marwit Rod El- Leqah area in the Eastern Desert of Egypt. These deposits are considered as a potential source of high-purity quartz (HPQ) for use as raw materials for special applications in high- technical industries. Geological description, whole-rock geochemical analyses of representative samples, study of thermal behavior of quartz through differential thermal analyses and measurements of some petrophysical properties of the quartz deposits...

In this work, samples were taken from Koyunagili Lignites Company Washing Plant feed and were subjected to extensive research to determine the floatability of lignite fines. The optimum conditions of flotation were determined under the laboratory conditions by using a laboratory type Denver flotation cell. In the flotation experiments particle size distribution, collector type and amount and dispersant amount were tested as variables. After flotation experiments, at optimum conditions, 53.91 \% of the sample was f...

Barite occurrences east of Istanbul (NW Turkey) are compared major mineralogical and geochemical properties, and identified depositional origins. Sile barite occurrence, which is near Blacksea, north east of Istanbul, is alternated with Triassic sandstone. Petrographic observations reveal that barite grains are found out in the sand stones. Chemical analyses are conducted on eighteen samples via AAS (Atomic Absorption Spectroscopy) equipment for detection of Cu, Zn, Pb, Sr, Cd and Ni concentrations. Because of a v...

The X-ray electron probe microanalysis (EPMA) technique is developed for cassiterites and minerals of Ta and Nb. The phase and chemical composition of rare metal pegmatite cassiterites of the East Sayan Belt and their inclusions of Ta and Nb minerals were studied using the EPMA technique. The results of cassiterite investigations showed, that niobium and tantalum are contained both in isomorphous form, substituting the tin in the matrix of mineral and as mineral inclusions of columbitetantalites. The distribution ...

The mineralogical analysis is a highly effective method of prospecting diamond-hosting rocks. The main goal of investigating kimberlites rocks, the primary source of diamonds, is to examine the mineral composition of kimberlites. The microprobe analysis is currently the principal method to define the compositions of megacryst minerals from kimberlite rocks. In addition, determination of the groundmass mineral composition is important for evaluating the diamond potential of kimberlites. This paper presents results ...

The aim of this study is to investigate ultrasonics use for colemanite flotation. The samples used in the study were provided from Eti Mines Inc.’s Emet Boron Works. The samples were 0-3 mm concentrates which could have not been increased to desirable B2O3 \% grades. At first, determination of moisture and grinding experiments were carried out. The liberation size of the ore was determined as minus 250 $\mu$m and minus 38 $\mu$m was removed because of the negative effect of slime coatings in flotation. Then, it ...

The industrial importance of calcium carbonate as a filler in composite materials such as plastics, textiles, rubbers, paints, pigments and paper is well recognized and the application in the polymer industry is increasing. Therefore, surface modification is a key process in functional calcium carbonate powder preperation. In this study, surface modification of calcium carbonate particles, obtained NiДџde region, using sodium stearate (SDS) and sodium oleate (SO) as modification agents incorporated with the simult...

The Yarpuz (Kakliktas) bauxite deposit is located in Antalya region southern Turkey; 35 km to the south of Seydisehir and 180 km to the north of Antalya. It is one of the bauxite deposits with the highest silica modulus (Al2O3\%60.26 /SiO2\%1.74=34.63) outcropping in the Central Taurus Mountains. The Upper Cretaceous Katrangedigi formation forms the basement and, comprises carbonate rocks. The bauxites were deposited in the paleo-karstic depressions developed at the upper part of the KatrangediДџi carbonate and, w...

In this study, the effect of roasting and alkaline sulphide leaching pre-treatments on gold and silver recoveries by cyanidation from an antimonial refractory ore was investigated. Alkaline sulphide leach test for decomposition of antimonial sulphides were performed using Na2S and NaOH solution as leachant. Up to 85\% of antimony was removed by suitably adjusting the molar concentration of the leachant solution over two hours of leach time. Gold recovery in cyanidation was low (≤50\%) without pretreatment, but i...

Nickel-copper (Ni-Cu) mining and smelting activities within Selebi Phikwe area, Botswana is suspected to be having negative impact on the biophysical environment; thereby influencing the health of residents of this growing urbanised settlement. This paper focuses on relating the biophysical environmental hazards emanating from mining activities to human health status of residents of the study area. Mineralogical analysis of samples of tailings dump, soils, and particulate air matter (PAM) were conducted. Concentra...

Calculations fluoride-calcium balance in mineral waters in the Southwest Transbaikalia are carried out.

Currently the Electron Probe X-ray Microanalysis (EPMA) is the leading method in investigating of chemical composition of new minerals, which can be detected as small accessories. The results of this method are required for registration of new minerals by the IMA Commission on New Minerals and Minerals Names. Six new minerals were found in other rocks from Baikal region by scientists of Institute of Geochemistry. These morphology, chemical composition and paragenesis were studied with Microprobe JCXA-733, Jeol Ltd...

Geographic Information Systems (GISs) are very useful tools for managing, checking, and organizing spatial information from many sources and of many types in thematic layers. One of the most important applications of geographical information system (GIS) is the site selection for various problems. The main purpose of this research is the selection of the best place for establishes the processing plant next to the one mineral deposit, which is located in Howe Hill in United Kingdom (UK), using of IDRISI software. T...

For the flotation of complex Cu-Zn sulphide ores; mineralogical texture of ore, liberation particle size of minerals, selection of suitable flotation reagents and the technological properties of flotation machines are very important. The ore to be investigated in this study is complex Cu-Zn sulphide ore taken from East Karadeniz region that have some problems depending on fine liberation particle size. Ore grade is 2.75\% Cu and 6.75\% Zn. In this study, the determination of particle liberation size and the effect...

Glauberite mineralization from Cayirhan, Ankara (Central Anatolia) has been investigated and identified the major mineralogical, petrographical and geochemical properties. Glauberite occurrence, a sodium calcium sulfate mineral (Na2Ca(SO4)2) by evaporation, is underneath the gypsum mineralization which accumulated at the contact zone between Pliocene aged Ucyatak and Softa formations. The mineralization is related to clay and mudstone, and accompanies with thenardite, gypsum, anhydrite, mirabilite and blodite. Maj...

The pyrope deposits under the Cesk\'e Stredohor\'\i mountain range have been known for at least hundred of years. The paper just summarized the geological situation of pyrope localities, describes the history of its being exploited and finding of exceptional games. Main attention is devoted to the result of mineralogical research of localities, deposit meaning and perspective of individual localities.

Mineral water and drinking water are two vital and immediate needs for human beings. The origin of 80\% of human diseases are unavailability of healthy water.75 percent of people in developing countries are deprived of facilities for water. Actually , healthy water is scarce and expensive. Pollutions descend the quality of water by changing it physically, chemically and biologically. Some of the pollutions are decadence and can be degraded easily, like human, animal and agricultural drainages. Some of the pollutio...

Fine grinding involves a large number of parameters in its operation. In this study, the effect of some parameters such as initial particle size, filling volume of the ball and ball size distribution on fine grinding of calcite powders (-200, -150 and -100 $\mu$m) using a laboratory stirred ball mill was studied under wet conditions. Zirconia beads (ZrSiO4) were used as grinding media with 1.0-1.2, 2.0-2.2 and 2.8-3.0 mm. A series of batch experiments using 2 3 full factorial designs was conducted to determine opt...