Abdul-Hamid Mohammed, Kwabena Offeh Gyimah, Philip Yamba, Jamal-Deen Kukurah, Joseph Sekyi-Ansah, Anthony Akayeti, James Kwasi Quaisie, Bismark Addai
The present study designed, constructed and undertook the performance evaluation of a hammer mill for milling cereals grains as an alternative to that of a traditional attrition mill which poses health challenges. The materials used for the study were galvanized steel, stainless steel 304, canvas, and electrodes. The study made use of Autodesk inventor professional 2020 for the modelling and ANSYS Workbench was used for numerical analysis. The performance test of the mill was done with three different cereal grains namely corn, guinea corn and millet with different sieve sizes. The quantity of cereal weighed to test run the machine was 15 kg, 20 kg and 25 kg for each sample. The result showed that its capacity is improved to mill cereals up to 1000 tons per day and can equally mill cereal grains into grades for animals’ consumption. For the improved hammer mill, the iron filings contents produced had much lower iron filings contents of milled corn, guinea corn and millet as compared to the attrition mill. The improved hammer mill has an efficiency of 96%. The model remains safe with the induced deformation being lower which will not make it deteriorate faster. The crushing unit is shown to withstand the applied force which produced a von Mises stress lower than the yield strength of the material. The factor of safety based on the induced stress and the yield strength of the material is 2.49 with a margin of the safety factor of 1.49. The proposed mill after completion is safe to operate and easy to carry out maintenance therefore it is recommended for use as a milling unit for cereals.
hammer mill, cereal grains, traditional attrition mill, numerical analysis and iron fillings.
Cite this paper
Abdul-Hamid Mohammed, Kwabena Offeh Gyimah, Philip Yamba, Jamal-Deen Kukurah, Joseph Sekyi-Ansah, Anthony Akayeti, James Kwasi Quaisie, Bismark Addai. (2023) Redesign and Simulation of a Hammer Mill to Minimize Consume of Iron Filings. International Journal of Mechanical Engineering, 8, 52-61