Dense phase precipitation

摘要: Abstract of the Disclosure A system for precipitation Al(OH)3 from green liquor is provided which comprises process and apparatus feeding into bottom a chamber containing supersaturated solution alumina trihydrate seed particles. The flow main-tained at rate sufficient to suspend particles in with minimum turbulence so that approxi-mately plug flow. As precipitates on particles, grow larger gradually move where they are removed. solution, depleted respect Al2O3, overflows return process.