[3] From 1914 to 1929 he was a full professor of construction of thermal and hydraulic engines at his alma mater, Polytechnic University of Milan.

[2][4] On 10 July 1925 Belluzzo was appointed minister of national economy to the cabinet led by Benito Mussolini.

[2] Belluzzo's term as minister of national economy ended on 9 July 1928,[4] and Alessandro Martelli replaced him in the post.

[6] On the same day he was named as the minister of public education in the same cabinet, replacing Pietro Fedele in the post.

[4][7] Belluzzo held the post until 12 September 1929 when Balbino Giuliano was appointed as minister of public education.