| Popis: |
This paper studies the impacts on the particle size and shape of silica sands by roasting times and different methods of cooling, which finds out that different methods of cooling may lead to different cooling rates of sands; that is, adopt water-cooled fluidized bed to cool down sands, the cooling rate is the highest; the secondary is by cooling cylinder, and common fluidized bed leads to the lowest cooling rate. After being roasted and cooled, no matter which method is adopted, the sands are not changed obviously in particle size and shape, which indicates that roasting times, different cooling methods and cooling rates have no obvious impacts on the particle size and shape of silica sands. |
