Loicq was born 11 August 1888 in Brussels, Belgium. He was a speed skater as a youth, and later adapted to playing hockey. He played as a right winger for FP Bruxelles from the 1905–06 to 1910–11 seasons, and then played for Cercle des Patineurs Bruxelles (CDP Bruxelles) from the 1911–12 to 1913–14 seasons. He played on the Belgium men's national ice hockey team at the Ice Hockey European Championships in the 1910, 1911, and 1914 competitions. The Belgians placed third and won a bronze medal in each of the three years he played. Loicq also played for the national team at the 1912 LIHG Championship and won bronze. He played in three consecutive Belgian Championships with CDP Bruxelles from 1912 to 1914, and was a national champion in 1914.
