you're supposed to go to where everybody sells stuff on their mules and use so many that it floods the chat log so when they go to check if they sold anything all they see is you getting pinches of silt. There is no chat filter which blocks them, not even blacklisting.
That's between 4,950-9,900 (avg 7,425) silt. Giving that it takes 3-5 seconds to open one, you're going to be sitting somewhere around the 6.5 minute mark to open all these.
Average silt / average time to open all bags = ~1142 silt/min (of opening bags)...
Even if you are getting more than 1,142 silt/ min, you just tossed out free currency.
If you are clearing more than that per minute, then do something along the line of what @Bahamut.Striker suggests and open the silt pouches when you happen to be doing something out.
I highly doubt you're capped on silt, so why did you throw out something that you earned that can further you in the long run?
Seems wasteful. And if your inventory was THAT full, clean it out before you go CP.