|
Process step |
% |
Products |
°C |
Running Time |
Remarks |
|
Pre-soak |
300 |
water |
28 |
|
|
|
|
0.1-0.2 |
Negahdar
Ist-WB |
|
|
|
|
|
0.1 |
Rockol 642 |
|
run 30 mins. |
|
|
|
|
|
|
rest 30 mins |
|
|
|
|
|
|
run 30 mins. |
|
|
Drain |
|
|
|
|
|
|
Main soaking |
200 |
water |
28 |
|
|
|
|
0.2-0.3 |
soda ash |
|
|
|
|
|
0.3-0.5 |
Negahdar IST-WB |
|
|
|
|
|
0.1-0.2 |
Rockol 642 |
|
run 30 mins. |
|
|
|
|
|
|
leave automatic |
|
|
|
|
|
|
rest 45 mins. |
|
|
|
|
|
|
run 5 mins. |
|
|
|
|
|
|
total time 8-12 hrs |
|
|
|
|
|
|
|
pH= 9.2-9.5 |
|
|
|
|
|
|
Be < 3.5 |
|
Drain |
|
|
|
|
|
|
Liming |
70 |
water |
28 |
|
|
|
|
1.5 |
sodium hydrosulphide,72% |
|
run 30 mins. |
|
|
|
|
|
|
rest 30 mins |
|
|
|
1.0 |
sodium sulphide,60% |
|
|
|
|
|
0.5 |
hydrated lime |
|
run 30 mins. |
|
|
|
|
|
|
rest 30 mins. |
|
|
|
1.0 |
sodium sulphide,60% |
|
|
|
|
|
1.0 |
hydrated lime |
|
run 30 mins. |
|
|
|
|
|
|
rest 30 mins. |
|
|
|
0.5 |
sodium sulphide,60% |
|
|
|
|
|
1.0 |
hydrated lime |
|
run 30 mins. |
|
|
|
|
|
|
leave automatic |
|
|
|
|
|
|
run 5 mins. |
|
|
|
|
|
|
rest 60 mins. |
|
|
|
|
|
|
total time 16-18hrs |
pH=12.5 |
|
|
|
|
|
|
26-28°C |
|
Drain |
|
|
|
|
|
|
Washing |
200 |
water |
28 |
run 15 mins |
|
|
Drain-unload-fleshing-weight |
|
|
|
|
|
|
Drain |
|
|
|
|
|
|
Washing |
200 |
water |
30 |
10 mins. |
|
|
Drain |
|
|
|
|
|
|
Deliming |
50 |
water |
30 |
|
|
|
|
0.5 |
Rockaltal F |
|
|
|
|
|
0.3 |
Rockol 642 |
|
20 mins. |
|
|
|
1.0-1.5 |
Rockaltal F |
|
|
|
|
|
0.5 |
Rockaltal M |
|
30 mins. |
pH= 8.3-8.6 |
|
|
|
|
|
|
cut :10% red |
|
Bating+ 70 |
|
water |
35 |
|
|
|
|
0.7-1.0 |
Rockenzyme 7500-L |
|
|
|
|
|
0.2 |
Rockol 642 |
|
45 mins. |
|
|
Drain |
|
|
|
|