The Sangan processing plant consists of four consecutive low-intensity magnetic separation steps with the same magnetic field intensity of 1300 Gauss for upgradation of iron ore. Hence, the iron ore minerals with lower magnetic susceptibility or interlocked with gangue minerals have no opportunity for upgradation, and proceed to the tailing dam. Flotation is a powerful technique for upgradation...

AIMS To evaluate a safe sputum processing method for detection of tuberculosis in developing countries. METHODS A sample processing method was developed in which acid fast bacilli were killed with 1% sodium hypochlorite and concentrated by flotation on a layer of xylene before staining by the Ziehl Neelsen or auramine O methods. RESULTS Best results were obtained by auramine O staining afte...

Abstract To solve the problems of unstable chemical oxygen demand (COD), turbidity and suspended solid (SS) removal for electrocatalytic process operation subsequent ultrafiltration membrane–reverse osmosis membrane in a centralised fracturing wastewater treatment plant Inner Mongolia, integrated dissolved ozone flotation (DOF) was proposed to replace original process. Multiple processes, such ...

Recently, coal fly ash has become a potential candidate as secondary resource of rare earth elements (REE). In this investigation, we studied the recovery REE from commercial power plant. The specific aim was to assess technical feasibility recovering using conventional preconcentration methods, including gravity separation, magnetic and froth flotation. experimental results revealed that flota...

Flotation deinking of old newsprint (ONP) using polydiallyldimethylammonium chloride (polyDADMAC) as the only deinking agent was studied. The results demonstrate that polyDADMAC can neutralize dissolved anionics to form small particles. These small particles, together with ink, filler, and fines, strongly adsorbed onto air bubble surfaces and functioned as particle foaming agents. Therefore, no...

Mining and metallurgy have negative consequences for the environment [1-3] and lead to changes in geological [4] and climatic conditions [5]. Mining-metallurgy operations include the extraction, preparing of ores (crushing ore and flotation), processing of concentrates, and the disposal of waste rock and by-products. The main waste in mining and metallurgy are waste rocks, flotation tailings an...

A simple thermodynamic analysis suggests that oil can spontaneously displace water from coal’s surface if the coal particle has a water contact angle greater than 90°. However, the clean coal products obtained from laboratory-scale dewatering-by-displacement (DbD) test work assayed moistures substantially higher than expected. These high moisture contents were attributed to the formation of wat...

The paper discusses two procedures of flotation of difficult-to-float oxidized coal. The first one is the normal flotation procedure which relies on wetting coal with water followed by addition of flotation reagents (dodecane, dodecyl tetraoxyethelene ether (C12E4), and 1-pentanol). The second, direct contact procedure consists of mixing pure reagents with dry coal followed by addition of water...

The residence time of liquid and solid was determined in flotation banks of mechanical cells and flotation columns at Salvador Division, Codelco-Chile. The estimation was developed from residence time distribution (RTD) measurements using radioactive tracers. Results allowed the estimation of effective pulp volumes in flotation banks and columns. It was found that industrial flotation banks are...