| 摘要 |
A direct heat kiln process for the production of phosphoric acid from phosphate ore utilizing a reductant process in combination with a carbon source, silica and heat. The process employs air control to control the burning rate of the product gasses from the kiln bed in order to control the overhead temperature in the kiln and the kiln bed temperature. In order to keep the reaction temperature at the lower ranges to prevent melting. The kiln feed ball constituents are co-ground and finely ground to lower the required bed temperature to minimize melting. |
