Negatively Biased Flotation Column (NBFC) is a tool, which developed for the flotation of coarse-sized ores. Unlike conventional column, in this there no froth zone and wash-water usually not used. Therefore, hydrodynamically entrainment fine-sized particles into concentrate possible, may result decrease grade or yield concentrate.
 In study, operating parameters that can affect were inves...

Investigations were carried out on the effective utilization of blast furnace flue dust samples obtained from the two integrated steel plants at Rourkela and Jamshedpur. The samples essentially contained unburnt coke and iron rich grains as the value added products. Flotation technique was employed to recover the carbon values present in the sample. It was possible to obtain a product containin...

This study is focused on the froth flotation reprocessing of a copper mineral from tailings. The effects parameters including pulp density, collector dosage, frother and dispersant dosage were statistically examined to obtain an effective approach for concentrating minerals. sample ore used in this was mainly wastes that have been stored more than 30 years comprised mixed sulfide minerals parti...

a new method was introduced for frothing characterization of flotation frothers. method uses water recovery to develop a new frothability index named water recovery index (wri). new index was determined for some commercial frothers and results were compared with dynamic frothability index (dfi). results showed that water recovery index values follow the order of a-65 13016 s/mol > df-250 6292.4...

Earlier studies at the Kevitsa Cu-Ni concentrator plant have indicated that seasonal variations of properties process water affect oxidation surface minerals, and further, pentlandite flotation performance. However, it is not clear whether differences in performance are solely due to changes mineral oxidation, and/or also oxidation-induced aqueous phase pulp. This paper investigates effects ore...

Methylene blue was efficiently removed from aqueous solution by foam flotation using a rhamnolipid a biosurfactant as a dye collector. The effects of four parameters, namely, pH (1.5–11.5), frother concentration (5–65 ppm), aeration rate (2–6 L/min) and rhamnolipid to methylene blue weight ratio (0.5–6.5), on dye removal were studied and optimized using response surface methodology. Results...

This paper tries to determine an optimum condition for the flotation operation of the Alborz-Sharghi coal washing plant. For this purpose, a series of comprehensive experiments have been conducted on representative samples from feed of the flotation system of the plant. Four operational variables such as the collector dosage (Fuel oil), the frother dosages (MIBC), the pulp density percent and t...

A test-rig closed-loop flotation column was used to observe the effect of diesel oil (collector) and Flomin F-425 (frother) on mass yield ash content for two Colombian coals: Caypa (northern zone) Guachinte (southwestern zone). The coal samples less than 38 µm (-400 M) were processed in a collector concentration range 0,32 1,60 kg/ton coal, as well frother 10 50 ppm. response surface methodolog...

this study investigates removing ash and pyrite sulphur from bitumen by column flotation process. central composite design (ccd) of response surface methodology (rsm) was applied for modeling and optimization of the percentage of ash and pyrite sulphur removal from bitumen. the effects of five parameters namely the amounts of collector and frother agents, particle size, wash water rate and feed...