Abstract: Fluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic separation, a reverse flotation process is used to float calcite gangue from fluorite. However, little information on the separation is available. In this study, a novel reagent schedule using ci...

Diethyldithiocarbamate (DDTC) is employed in the sulfide ore flotation process due to its excellent collection performance. Herein, we investigated interfacial adsorption behavior of DDTC on four main mineral phases high-sulfur residue: sulfur, pyrite, sphalerite, and lead sulfate. The H2O, namely, structure energy electron localization function cross section, were explored using density theory...

in order to investigate the biodiversity of plant parasitic nematodes of vegetable fields in mashhad area, 51 soil and root samples were collected during 2010-2011. nematodes were extracted by centrifugal flotation technique and transferred to glycerin according to the modified de grisse method (1969). the permanent slides were prepared from the extracted nematodes. the nematodes were identifie...

Two hundred and seven weaned foals aging 6 to 12 months from small farms in the Lublin region were examined in the years 2005 to 2007. The investigations were carried out using flotation and sedimentary flotation methods, and McMaster’s quantitative method modified by Wetzel. Eimeria leuckarti oocysts were found in 19 (9.18%) of the foals. The horses demonstrated occasionally clinical signs (fo...

Sparingly soluble Ion—association compounds Thrmed between multicharged anionic complexes ( formed from trace amounts of an element to be preconoentrated and determined) and hydrophobic basic dyes, accumulate at the phase boundary after shaking with a solvent of low polarity, This type of flotation (without surfactant and gas bubbling) depends on the acidity, the dyestuff and the flotation agen...

Companhia Brasileira de Alumínio (CBA) has bauxite processing plants at Poços de Caldas and Itamarati de Minas, and a new processing plant at Miraí that has been operating since June, 2008; all of them are in the State of Minas Gerais. The plants haveunits for the crushing, scrubbing and screening operations. The screened oversize is the concentrate or washed bauxite. At Itamarati de Minas, the...

A variety of procedures are available to detect parasite eggs or oocysts in feces. This study compared the efficacy of simple flotation, a commercial assay, and various centrifugation techniques and three common flotation solutions. Results indicate that centrifugation consistently recovered more eggs than other methods. Proper technique is critical, including ensuring that the specific gravity...

For predicting the key technology indicators (concentrate grade and tailings recovery rate) of flotation process, an echo state network (ESN) based fusion soft-sensor model optimized by the improved glowworm swarm optimization (GSO) algorithm is proposed. Firstly, the color feature (saturation and brightness) and texture features (angular second moment, sum entropy, inertia moment, etc.) based ...

Fluorite, barite and calcite are important industry minerals. However, they often co-exist, presenting difficulty in selectively separating them due to their similar surface properties. In this study, valonea extract and sodium fluosilicate were used as depressants to selectively separate them by flotation, with sodium oleate as the collector. The single mineral flotation results showed that va...