| 摘要 |
<p>-.18 A process for the production and regeneration of hydrochloric acid for upgrading ilmenite, the process comprising the steps of: (i) Heating a mixture of lime and 5 ammonium chloride to produce calcium chloride and ammonia gas; (ii) Treating the calcium chloride with an acid to form hydrochloric acid; (iii) Upgrading primary ilmenite by mixing it with hydrochloric acid product of step (ii); (iv) Separating the upgraded (secondary) ilmenite from the product of step (iii) to produce a leach liquor containing iron chloride; (v) Neutralising the leach liquor of step (iv) to 10 produce calcium chloride; and (vi) Transferring the calcium chloride product of step (v) to step (ii). 0 z C)n F 35,7:, w)</p> |
