The phase abundance information is then transmitted to the central computer in the cement plant where it can be used for the control of mill parameters such as temperature and retention times as well as gypsum feed rate.
#Phase diffraction using crystaldiffract Pc
The instrument is controlled by a PC linked to the diffractometer through a purpose built interface. The data are then analyzed using a Rietveld analysis method to obtain a quantitative estimate of each of the phases present.
#Phase diffraction using crystaldiffract full
The XRD data are collected simultaneously using a wide range (120° 2θ) position sensitive detector, thus enabling rapid collection of the full diffraction pattern. The instrument incorporates continuous flow of sample through the diffractometer using a purpose-built sample presentation stage. Key factors in tailoring such an instrument to the cement industry were (i) the handling and presentation of a dry sample and (ii) the development of an analytical method suitable for the complex suite of phases contained within Portland cement. with an instrument designed for use in a Portland cement manufacturing plant. This has been achieved through a joint project between CSIRO Minerals and Fuel & Combustion Technology Pty. The aim of this work was to design, construct, install, and commission an on-line, X-ray diffraction (XRD) analyzer capable of continuously monitoring phase abundances for use in process plant control. In the present work, we describe a second type of singularity-a ternary singularity-in which the two of the three lattices are in a derivative composite relationship. In a previous work, a binary singularity was described involving a monoclinic and a rhombohedral lattice. When this happens, it is critical to recognize that there exists more than one indexing solution. In the laboratory, an encounter with a singularity can lead one into a trap viz., the investigator using an indexing program, or by other means, may determine only one of the lattices with a high figure of merit. A variety of types of singularities are possible depending on the number of different lattices involved (i.e., binary, ternary, quaternary), on the nature of the derivative lattice relationship (i.e., subcell/supercell, composite), on the Bravais type of each of the lattices, and on the the volume ratio(s) of primitive cells defining the lattices. Lattice metric singularities often involve lattices that are in a derivative relationship one to another. The existence of such singularities, therefore, has a practical impact on the indexing of powder patterns. Raman spectroscopic studies elucidated the behavior of the substance and the relation among phases of tetra-arsenic tetrasulfide.A lattice metric singularity occurs when unit cells defining two (or more) lattices yield the identical set of unique calculated d-spacings. They were characterized using powder and single crystal X-ray diffraction techniques to confirm the phase identification and the lattice parameters. The grown crystals are as large as 0.50×0.50×0.01 mm. The crystal exhibits a platelet-like shape as a thin film with well-developed faces (0 1 0) and (0 1¯ 0). Single crystals of As 4S 4 (II) obtained using this method were translucent and showed a uniform yellow-orange color. Results show that single crystals of the As 4S 4 (II) phase were obtained reproducibly through the dissolution–recrystallization process. Then it is dissolved and recrystallized from CS 2 solvent. First, through photo-induced phase transformation, pararealgar powder is prepared as a precursor instead of AsS melt. As described by Kutoglu (1976 ), single crystals of As 4S 4 (II) phase have been grown using a new two-step synthesis that drastically increases the reproducibility that is attainable in synthetic experiments.
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