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Method for homogeneous precipitation separation of nickel, cobalt and manganese from laterite nickel ore acid leaching solution

机译:从红土镍矿酸浸液中均匀分离镍,钴和锰的沉淀方法

摘要

Disclosed is a method for the homogeneous precipitation separation of nickel, cobalt and manganese from a laterite nickel ore acid leaching solution, wherein the present invention belongs to the technical field of the comprehensive utilization of complex multi-metal resources. The method comprises: formulating a sodium hydroxide solution or finely ground calcium oxide or magnesium oxide into a slurry as a precipitating agent; conveying the precipitating agent to a homogeneous reactor via a pipe provided with a rate control device and installing a refiner at an outlet end to refine the precipitating agent; conveying an acid solution containing nickel, cobalt and manganese to the homogeneous reactor via a pipe provided with a rate control device and installing an atomizer at an outlet end to atomize the acid solution, wherein the controlled rate atomized nickel-cobalt-manganic acid solution and the rate-control refined precipitating agent are homogeneously reacted in the homogeneous reactor to obtain a post-reaction slurry; and filtering the post-reaction slurry to obtain a liquid remaining after nickel-cobalt precipitation and a sand-like nickel-cobalt-manganese residue. The method has a simple process, a high operability, a low cost and convenient industrial production, can realize high-efficiency separation of nickel, cobalt and manganese from a laterite nickel ore acid leaching liquid, and has broad application prospects.
机译:本发明公开了一种从红土镍矿酸浸液中均匀沉淀分离镍,钴,锰的方法,属于复杂多金属资源综合利用技术领域。该方法包括:将氢氧化钠溶液或精细研磨的氧化钙或氧化镁配制成浆液作为沉淀剂;通过装有速率控制装置的管道将沉淀剂输送到均相反应器中,并在出口端安装精制机以精制沉淀剂。通过装有速率控制装置的管道将含镍,钴和锰的酸溶液输送到均相反应器中,并在出口端安装雾化器以雾化该酸溶液,其中该可控速率的雾化镍-钴-锰酸溶液和使速率控制的精制沉淀剂在均相反应器中均相反应,得到反应后浆料。过滤反应后浆料,得到镍钴沉淀后残留的液体和砂​​状镍钴锰残留物。该方法工艺简单,可操作性高,成本低廉,工业生产方便,可实现从红土镍矿酸浸液中高效分离镍,钴和锰,具有广阔的应用前景。

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