May I ask where you got the sulphide? Try electroplating something in copper and use pennies as a source of copper. Coins ranging in the 80's contain the most zinc of u.s pennies produced.
awesome video! Your channel is really awesome, pretty easily obtainable chemicals with an awesome result. Have you tried mixing in a ball mill? that would guarantee a really fine mix. Your forge looks like a blast furnace me and a friend made, crazy hot.
