This is a short communication on the work done to recover aluminium oxide from waste produced by a fertilizer manufacturing company in South Africa. Aluminium rich ore (known as flint clay) was subjected to an experimental study in which aluminium oxide (Al2O3) was recovered through acid leaching. Sulphuric acid was the leaching agent due to its suitability for leaching aluminium and other base metals. The following phases were present in the sample (Al2O3), magnetite (Fe2O3), silica (SiO2) and as well as other metal compounds in concentrations of less than 2%. Parameters investigated were, leaching time, acid concentration, solid to liquid ratio and leaching temperature. The maximum Al recovery was 69%. The optimum conditions found in this study were leaching time of 4 hours, acid ratio of 1:4, leaching temperature of 1000C and solid to liquid ratio of 1:6.