Characterization and chemistry of formation of a magnesium hydroxide-type scale obtained from the tungsten process

This paper pertains to the characterization of a scale that forms in the plastic packing of the ammonia-stripping column in the tungsten process. Results indicated that the major phase of the scale contained a Mg(OH)2-type structure, which can be represented by Na2-2xMgx(OH) 2-y(WO4)y/2 where 0