A more effective grinding method for rice husk ash | |
| Author | Farooq-e-Azam |
| Call Number | AIT Thesis no.ST-82-01 |
| Subject(s) | Size reduction of materials Rice hulls |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | This research. work was conducted to produce reactive rice husk ash (RHA) with Minimum energy consumption and to determine the effect of fineness on the properties of RHA, RHA-mortar and RHA-concrete. A ferrocement incinerator and the grinding machine developed earlier at AIT was used for burning and grinding of RHA. Mild steel rods were used as a grinding media. The burning and grinding processes are simple and inexpensive; therefore, can be used in developing countries, A mechanism to measure the torque produced by the grinding machine is developed in order to predict the energy consumption of the grinding machine. Test results showed that the most efficient grinding conditions are 50 rpm speed, grinding media 6 percent of volume fraction of the grinding chamber and input charge of 70 percent of the total capacity of the grinding chamber. The speed of the grinding machine plays an important role on the efficiency of the grinding machine. For a greater amount of input charges the effect of speed is more evident. The energy consumption for the grinding machine operating at 13 rpm speed is nearly twice as much as that of 50 rpm speed for input charge of 16 kg (95 percent of total capacity). It is recommended that RHA having fineness passing sieve No. 325 between 85 to 95 percent should be adopted when used in replacing cement. |
| Year | 1982 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pichai Nimityongskul ; Loo, Yew-Chaye |
| Examination Committee(s) | Karasudhi, Pisidhi |
| Scholarship Donor(s) | Government of Japan |
| Degree | Thesis (M.Eng.)- Asian Institute of Technology, 1982 |