Does the husband's statement to his wife: "Go to our house tomorrow morning, and if you don't go in the morning, then don't ever come to it," along with his oath that if she doesn't go, she shouldn't return to the house, count as a divorce if the wife does not go at the specified time?

If you did not utter an explicit divorce, and the phrase mentioned was a kinayah (allusion), then the matter depends on your intention. If you intended divorce, it occurs if the wife does not return home in the morning. If you did not intend divorce, then it does not occur. However, if you swore by Allah concerning that, then taking her back necessitates an expiation for a broken oath.