I hope your process control is better than your description of your situation.Nonononono ya'll got me wrong, out of the 23kg of lead i took two tiny pieces of few grams of it. I disposed of it on the local waste management facility after neutralizing the solution (and pouring some iron solution in case it precipitates but didn't get to see it) and properly write on it what it contains. I evaporated 75% of one of those two tiny pieces which i then threw in the same acidic solution to see if it reacts and looks the same after few days, which it did. I would of used sulfuric for precipitation.
Your description led us to think you had dissolved the majority of this Lead piece.
Precision is a key element when doing chemistry in general and even more so when asking help.
