"global ban" is correct and usable in written English.
You can use it when referring to a prohibition or restriction that applies to the entire world. Example: The United Nations has called for a global ban on nuclear weapons.
A global ban on the high seas?
Its mandate is to monitor the global ban on the testing of nuclear arms.
A complete global ban is an aim that should never be abandoned.
The bonfire triggered a 1989 global ban on ivory trading under an international agreement between governments.
The ivory being destroyed didn't include items legally imported or acquired before the 1989 global ban.
This undermines the global ban on commercial whaling which the UK strongly supports".
A global ban on child soldiers has gone into effect, the United Nations said.
The EU is set to oppose a total global ban on ivory sales.
Watch a 2016 report on prospects for a global ban on the ivory trade.
A global ban on the horn trade, enforced by a United Nations convention, remains in place.
The global ban has been strongly backed by African countries, China, Colombia and the EU, which already prohibits toxic exports.
