| 摘要 |
<p>The invention relates to a combined heater-decanter unit in a nickel laterite process. The unit comprises a vertically elongated vessel (1) comprising a heating section (2) arranged in the upper part of the vessel (1), a pressure decantation section (3) arranged below the heating section (2),and a passage (4) extending from the heating section (2) to the pressure decantation section (3). The heating section (2) comprises a first inlet (A) for slurry to enter the vessel (1) and a second inlet (B) for heating fluid to enter the heating section (2) and the pressure decantation section (3) comprises a tapered part for slurry to settle and a first outlet (C) for discharging the slurry. The invention also relates to a method for increasing density of feed slurry by preheating and removing water from the slurry in a combined heater-decanter unit.</p> |
