Pulp bleaching agent FAS
1. Product Character:
FAS is one kind excellent pulp and
paper bleaching agent, it can be used in reduction bleaching,
waster paper deink bleaching. It is very stable in air
and can be used under the normal equipments. Because
of high reducibility and good stability, it is very
suitable for high temperature continual bleaching, and
there is good for environment, does not increase the
waste water pollution load, conforms to the environmental
protection requirements.
2.Specification:
Appearance: Odorless crystal powder.
Purity: 99.0%Min
Moisture:0.05%Max
Iron(Fe):10ppm Max.
3.Use method:
Under alkali conditions, add FAS water solution into pulp to bleach the pulp, the quantity is decided by the pulp nature, usually one ton pulp need 0.3%~0.6% FAS.
Technics Conditions as follows:
a. FAS dosage: 0.5%
b.NaOH dosage: NaOH:FAS=1:2(Weight).
c.PH: 8.8~9.0
d.Time and Temperature: Under 8 0°C at least 30Min..When
the temperature is low, can lengthened bleaching time
accordingly. |