Rita, Africa is a big country! Where exactly do you want to find the Dromaders that you are looking for?
There are some in Cameroon, Mali, Niger, Togo & Ivory Coast. My good friend Mathew Tiati in Cameroon may be of help to you there.
There are also some in South Africa. A Company that springs to mind is the South African Fire Fighting Association, NELAIR and Orsmond Aerial Spraying.
You wanna come to Africa to fly these birds, or you're just curious?