ABSTRACT
This research focused on the design and fabrication of a dual-purpose waste glass processing machine, using specific design considerations, design theories and calculations, to improve the efficiency of processing of waste glass. Recycling waste glass plays an important role in the grading and upgrading of waste glass in the environment. The post consumer waste glass pollutes the environment and by processing the waste glass using the dual-purpose waste glass processing machine upgrade the waste glass. The isometric projection and orthographic projection showing the major components of the dual-purpose waste glass processing machine were designed using software known as solid works. The major material used for fabrication was mild steel and other materials used were sourced at Old Panteka, Kaduna State. The hopper has an opening of 420mm by 120mm and a discharge end of 400mm by 100mm. The separator plates have a thickness of 4mm, length of 150mm, height of 150mm and total of 4. The shaft has a length of 530mm, height of 30mm and thickness of 30mm. The eccentric shaft has a length of 650mm and thickness of 30mm. The hammer mill has a length of 140mm, breadth of 35mm, thickness of 2mm and total of 18. The pin has a length of 240mm, thickness of 15mm and total of 2. The spacers have a length of 20mm and are 24 in total. The perforated screen has a length of 450mm, width of 250mm and thickness of 4mm. The sieves have a length of 320mm, height of 35mm, width of 285mm and a total of 3. The front door has a length of 390mm and width of 320mm. The collector has a length of 320mm, height of 35mm and width of 285mm. The housing case has two compartments, the first compartment has a length of 25mm, height of 15mm, width of 30mm; while the second compartment has a length of 250mm, height of 250mm and width of 520mm. Electric motor bed has a length of 450mm, height of 5mm and width of 350mm. The machine has a length of 996mm, height of 700mm and width of 696mm. The assembly of the dual-purpose waste glass processing machine was done by separable (using bolts and nuts) and permanent (by welding) fixed joints. The dual-purpose waste glass processing machine was sprayed with red oxide and an orange colour. The waste glasses were collected from different locations in Ahmadu Bello University Zaria, Samaru main campus. The beneficiation process of the waste glasses involved sorting, soaking, washing and drying. Each of the waste glasses were weighted to 2300g, and were used to test run the dual-purpose waste glass processing machine. The performance of the dual-purpose waste glass processing machine was tested using the sieves of 4mm, 3mm, 2mm and a collector. The results of the processed waste glass were determined by the grain sizes retained on each sieves. The total weight of the flint processed glass retained on the sieves and collector was 2288g, while the total weight of the amber and green processed glasses are 1822g respectively. The grain sizes retained on 4mm and 3mm sieves can be use for glass melting. The grain sizes retained on green, amber and flint glass 2mm sieve can be used for surface texture design. The grain sizes retained on the collector can be for partial replacement of cement, glass paint and glass tiles. The sieve analysis was carried out to determine the grading of the waste glass for use as aggregates.
