Slurry extraction

Example 6 Slurry Sampling by Rotary Traverse of Gravity Flow Increment volume, quantity of slurry extracted hy one cutter rotation, is S from hulk slurry flow B expressed in voliime-per-imit time. R is cutter rotation per minute. D is cutter angle opening, with D/360 extraction ratio for continuous cutter rotation. 

Each run of this matrix (inner array) is repeated nine times (outer array), following a CFD 3, for both noise factors. After all experiments were made in the laboratory, calculations were done to refer the concentration of the slurry extracts to the original sample. They are shown in Table 2.15. 

Since Sb is determined in slurry extracts of sediments and we aim for a good analyte extraction, HE is, without doubt, the most satisfactory acid because of its power to solubilise silicon matrices. Noteworthily, the experiments where HE is at its lowest level tend to yield low concentrations (poor extraction). In... 

M. Felipe-Sotelo, A. Carlosena, J. M Andrade, E. Fernandez, P. Lopez-Mahia, S. Muniategui and D. Prada, Development of a slurry-extraction procedure for direct determination of cobalt by electrothermal atomic absorption spectrometry in complex environmental samples. Anal. Chim. Acta, 522(2), 2004, 259-266. 

The most important variables determining the slurry extraction of Co were searched for. Two liquid media and three agitation modes were studied... 

Your bid should include the cost of evaluating the sample we are sending with this letter and the fees for 20 additional analyses to be completed over the next year. The sample is a slurry extracted from the mine using a special process that converts the iron ore into iron(II) sulfate, FeS04, dissolved in water. The mine could produce up to 1.0 x 10 L of this slurry daily, but we need to know how much iron is in that amount of slurry before we proceed. 

The methods used to analyze mass transfer in leaching systems depend on the methods of contacting used and how they are combined in multistage equipment. Appropriate methods of analysis may be the same for two superficially different types of contacting. Thus, crossflow extraction can be analyzed in terms of fixed-bed extraction and, if the two-phase flow in cocurrent slurry extraction is sufficiently pluglike, it... 

The only Canadian uranium refinery is operated at Port Hope, Ontario by Eldorado. Tonnage quantities of oxide (U3O3) were produced first in 1942 from ore concentrates. A solvent-extraction pilot plant was operated in 1950 and 1951 to investigate methylisobutylketone (hexone) and then tributylphosphate as extractants for uranium to obtain a high-purity product. The present refinery was designed and built by the Catalytic Construction Company in 1955 (11). Yellow cake is digested in nitric acid, the resultant slurry extracted with tributylphosphate dissolved in kerosene, and the uranium, after purification, transferred back to water. This solution is decomposed thermally to UO3. Capacity is about 5 Gg U/a. 

Experimental designs revealed the critical variables (HNO3 and HCl concentrations) and they were optimised by two simplex to measure Mo by slurry extraction-ETAAS. 

E. Fernandez and D. Prada, Multivariate optimisation for molybdenum determination in environmental solid samples by slurry extraction-ETAAS, Anal. Chim. Acta, 2005, 553, 208-213. 

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