(1) Viscosity Increase of Mg(OH)₂ Slurry with Ball-milling, eventually make spray drying be unable

                                                                              (1w% Poly carboxylic Ammonium Salt) 

(2) This viscosity increase is believed to be due to concetration increase of Mg²⁺ with ball-milling

 (Below is the result of ion chromatography analysis conducted by Center for Research Facility, YU) 

(3) 31vol. % aqueous Mg(OH)2 slurry, that can be sprayable, can be prepared with the dispersants 

                                                        (1w% Poly carboxylic Ammonium Salt + 1 w% NH4OH)