| 摘要 |
A method of producing a generally homogeneous fuel having a generally consistent particle size and calorific content from a heterogeneous waste material having components of diverse moisture contents, calorific values and micro-organism contents comprises: passing the waste material through a rotating drum; controlling the volume of waste material in the drum, the speed of rotation of the drum and the rate of flow of the material through the drum so as to obtain therein a residence time and a component collision frequency and intensity sufficient to obtain: (a) transfer of moisture between the components via mutual component contact, (b) breakdown of said components into small particles, and (c) intimate admixture of the small particles. The residence time is controlled to be sufficiently short so as to minimise micro-organism growth and activity and substantially to prevent any appreciable temperature rise. The fuel is obtained from the admixture of particles by separating those particles less than a predetermined size. |
