Yes, most of the time you can request this service especially if you have no relatives or friends in Belgium who speak French, English, or Dutch. This service is provided at Fedasil centers (http://fedasil.be/en) or any place that handles refugee cases. However, once you are a resident and need to go to the commune or CPAS to request something, translators are not allowed to help you because these bodies expect you to put efforts into learning the language.