Can someone please tell me where are the 5-9 of this happening in the OP ?
These are done by your wallet when you import the key generated by the OP's method.
Not exactly, you can't import a base 6 format key into your wallet. First you have to convert it from base 6 to WIF. In the OP the conversion is done using brainwallet, but they use a different method so the conversion method is different, they started with binary 1 and 0 and then convert to hex and then to WIF. With the dice method you have base 6 and then convert to WIF private key with the help of an app like bitaddress.