FITNIR Analyzers provide reliable, accurate and true compositions of green liquor and white liquor. Complete liquor compositions can be measured using FITNIR’s technology.

Optimization of Recausticizing Process
Traditional measurements for the recausticizing operation include differential temperature, density and conductivity. All of these measurement techniques infer a concentration of EA, TTA, sulphide, and/or carbonate. FITNIR provides more reliable, accurate, and true concentrations of chemical compositions to perform superior slaker control and causticizing efficiency (CE) control. For example, knowing the carbonate concentration of clarified GL provides the opportunity to perform feedforward slaker control by metering the optimal (stoichiometric) amount of lime into the slaker, thereby reducing occurrence of overliming.

Pulp Liquor Properties Measured by FITNIR Analyzers
> Green Liquor: TTA, EA, AA, Carbonate, Sulphide, Sulphate, Thiosulphate, Reduction Efficiency
> White Liquor: TTA, EA, AA, CE, Carbonate, Sulphide, Sulphate, Thiosulphate

Benefits of FITNIR Recaust Application
> Reduced risk of overliming
> Reduced TTA and EA variability
> Increased causticizing efficiency at target TTA
> Reduced deadload content (carbonate)
> Reduced lab tests

Contact FITNIR Analyzers Inc. and we can work together to optimize your recaust operations.