I'm not sure you can use a KDF because it requires a salt.

I'm working on a blog post on deterministic passwords (i.e. not keys for ECC), but I guess that if you really want determinism you can do something similar, maybe sha3.512 and "cut" a 256-bit ECC key.

This is the post, still a draft. Hopefully I'll publish it next week, but if you have any comments, they are more than welcome! https://medium.com/@0x0ece/how-i-manage-my-passwords-technic...