Hebei Messi Biology Co., Ltd. stated that after the cobalt concentrate is precipitated with magnesium oxide, it can be made into cobalt intermediates (generally crude cobalt hydroxide) or directly made into cobalt salt products such as cobalt chloride and cobalt sulfate. Therefore, the use of active magnesium oxide is of utmost importance, and the quantitative slurry mixing device for active magnesium oxide in cobalt precipitation production highlights its necessity.
The utility model discloses a magnesium oxide quantitative slurry mixing device for cobalt precipitation production, comprising: a screw feeder, a magnesium oxide slurry mixing tank, a magnesium oxide slurry delivery pump and a cobalt precipitation reaction stirring tank; the top of the magnesium oxide slurry mixing tank is provided with a feed port, the lower part of the side wall is provided with a discharge port, the top of the magnesium oxide slurry mixing tank is connected to the lower end of a new water pipe, the new water pipe is provided with an electric valve, the feed port of the magnesium oxide slurry mixing tank is connected to the discharge end of the screw feeder through a pipeline; the liquid inlet of the magnesium oxide slurry delivery pump is connected to the discharge port of the magnesium oxide slurry mixing tank through a pipeline; the upper end of the cobalt precipitation reaction stirring tank is provided with a liquid inlet, and the liquid inlet of the cobalt precipitation reaction stirring tank is connected to the liquid outlet of the magnesium oxide slurry delivery pump through a pipeline. The utility model can realize uniform addition of magnesium oxide, control the amount of magnesium oxide added, and is conducive to preparing magnesium oxide slurry according to cobalt production requirements.
Hebei Messi Biology Co., Ltd.’s nickel-cobalt-specific activated magnesium oxide is produced using Tibetan hydromagnesite. The raw materials are clean and pollution-free, with high content, low heavy metal content and fast reaction rate. It is very suitable for use in nickel-cobalt hydrometallurgical refining. Data from multiple tests by many customers show that under the best process conditions, the cobalt recovery rate is over 99%, and the Co content in the slag is over 36%, which is higher than the cobalt carbonate with a grade of about 25% obtained by sodium carbonate precipitation. The unit consumption of magnesium oxide is about 0.8tMg0/tCo, and the utilization rate can reach 91%.