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The authors have been developing a process which converts FGDgypsum to ammonium sulfate fertilizer with precipitated calcium carbonate as a .
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A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of ...
Ammonium sulfate also is manufactured from gypsum ... a ban on ammonium sulfate, ammonium nitrate and calcium ammonium nitrate fertilizers was imposed in .
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Chemically known as "calcium sulfate dihydrate," gypsum ... process, the gypsum industry ... What is Gypsum? What is Gypsum Board? Making ...
The present invention relates to a process of making a new form ... Ammonium acid sulfate, ... in said gypsum. 10. The process according to claim 5 in ...
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The aim of this work focus on making a process flow diagram which is ... the gypsum from the wet process of ... 2 Process preparation of ammonium sulfate Reaction ...
... MANUFACTURE OF AMMONIUM SULFATE ... of the gypsum and process ... of the ammonium sulfate produced and consider making an agreement to ...
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