Preparation of high-performance building gypsum by
2021.11.1 The high-performance building gypsum can be prepared by calcining the FGD gypsum with 3–5 wt% of CaO addition at 160–220 °C for 1.5–2 h. The building
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CN109369045A - A kind of gypsum production method and
The invention discloses a kind of gypsum calcining kiln systems, comprising: the fluidized bed kiln of calcining flue gas is obtained to burnt-up fuel；It is connected with fluidized
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Efficient direct-heating gypsum calcination rotary kiln
2011.7.25 The efficient direct-heating gypsum calcination rotary kiln is characterized in that a calcination suspended chain is hung at the periphery of the cylinder wall at the
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Calcining technologies for gypsum - ResearchGate
2007.8.1 Download Citation Calcining technologies for gypsum The developments in calcining technologies for the different raw gypsum sources for
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CN1861539A - Gypsum calcining method - Google Patents
2005.5.9 A process for preparing gypsum from plaster by calcining method includes such steps as mixing plaster powder, coal powder and water, stirring to obtain coal
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11.16 Gypsum Manufacturing - US EPA
11.16 Gypsum Manufacturing 11.16.1 Process Description1-2 Gypsum is calcium ... The board is rough-cut to length, and it enters a multideck kiln dryer, where it is dried by
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Gypsum calcination methods review Request PDF - ResearchGate
2005.1.1 The calcination processes could be divided in two main categories [4]: (i) direct heating processes in which gypsum is dehydrated on contact with flux gases; (ii)
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Calcination parameters on phosphogypsum waste recycling
2020.9.1 This study evaluated two parameters of PG calcination: kiln residence time (1 h, 2 h, and 5 h) and temperature (120 °C, 150 °C, and 200 °C).
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Utilization of cement rotary kiln waste heat for calcination
2020.12.1 Feasibility to explore utilization method of kiln waste thermal energy for calcination of phosphogypsum is discussed here. A half sphere cover is conceptualized
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