Results 261 to 270 of about 32,757 (297)
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Calcination of phosphates: reactivity of calcined phosphate
Powder Technology, 1980Abstract Detailed investigations of the effect of physical, chemical and mineralogical changes in calcined phosphate rocks on its chemical reactivity were carried out. It was found that the presence of CaCO 3 and/ or CaO decreases the chemical reactivity of phosphates by consuming the active reagent in the reactivity test.
H.A. El-Sinbawy +2 more
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ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Gupta Sudhir Kumar +2 more
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Gupta Sudhir Kumar +2 more
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Small Calciner for Drying and Calcination of SYNROC Slurry
Nuclear Technology, 1986A laboratory scale calciner was developed in which a batch of SYNROC slurry could be dried and then calcined. A SYNROC sample was demonstratively prepared from a hydroxide-route slurry with the calciner. Results of x-ray diffraction and leach tests revealed that the calciner formed a SYNROC sample of good quality.
Takayuki Amaya +3 more
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J. Mater. Chem., 1992
Kaolinite has been flash calcined to produce calcines kinetically frozen at different levels of dehydroxylation. The kinetics of subsequent isothermal dehydroxylation of the calcines were consistent with a three-dimensional diffusion model. Activation energies and rate constants generally decrease as dehydroxylation of the calcine increases. A decrease
Robert C. T. Slade +3 more
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Kaolinite has been flash calcined to produce calcines kinetically frozen at different levels of dehydroxylation. The kinetics of subsequent isothermal dehydroxylation of the calcines were consistent with a three-dimensional diffusion model. Activation energies and rate constants generally decrease as dehydroxylation of the calcine increases. A decrease
Robert C. T. Slade +3 more
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2019 IEEE-IAS/PCA Cement Industry Conference (IAS/PCA), 2019 Results from one of the world’s largest cement plants are presented in this paper. The plant incorporates many innovative technologies including being the largest single kiln and a preheater tower with dual-sting ‘hybrid’ low-NOx and CO inline calciner. Commissioned with coal firing, the plant later switched to firing a blend of coal and petcoke in the
Syed Suhail Akhtar +3 more
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Effect of Calcination Temperature on Pozzolanic Reaction of Calcined Shale Mortar
Applied Mechanics and Materials, 2012This study investigated the influence of calcination temperature on the pozzolanic activity of shale. Calcination temperatures of 500 °C, 600 °C, 700 °C, 800 °C, and 900 °C were used. The calcined shale powder was then passed through a No.200 sieve before being used to replace 20% of the cement in standard mortar samples.
An Cheng, Wei-Ting Lin, Sao-Jeng Chao
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