Method for separating nickel and cobalt from manganese in high manganese-cobalt ratio nickel-cobalt-manganese raw material
A technology of nickel-cobalt-manganese and high-manganese, applied in the direction of improving process efficiency, etc., can solve the problems of unqualified battery materials of nickel-cobalt sulfate solution, difficulty in separating nickel-cobalt and manganese, and achieve low production costs, fewer types of impurities, The effect of reducing production costs
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[0033] Example 1:
[0034] Kind of like figure 1 The method for separating nickel, cobalt and manganese in a high manganese-cobalt ratio of nickel-cobalt-manganese raw material of the present invention includes the following steps:
[0035] (1) The primary nickel extraction product produced by a nickel smelter in Africa is a raw material with high manganese-cobalt ratio of nickel-cobalt-manganese. The primary nickel extraction product is obtained from laterite nickel ore after pressure acid leaching and alkaline precipitation. The composition includes nickel and cobalt hydroxide precipitation slag. The main element content is determined as shown in Table 1. The moisture content in the raw material is 62.41%, and the mass ratio of manganese and cobalt elements is 1.87.
[0036] Table 1: Analysis of the main chemical elements of the primary nickel extraction products in Example 1
[0037]
[0038] (2) Mix the high manganese-cobalt ratio nickel-cobalt-manganese raw material of this embo...
Example Embodiment
[0040] Example 2:
[0041] Kind of like figure 1 The method for separating nickel, cobalt and manganese in a raw material with high manganese-cobalt ratio of nickel-cobalt-manganese of the present invention includes the following steps:
[0042] (1) The high manganese-cobalt ratio nickel-cobalt-manganese raw materials selected in this embodiment are the same as those of embodiment 1;
[0043] (2) Mix the high manganese-cobalt ratio nickel-cobalt-manganese raw material of this embodiment with an ammoniacal leaching agent. The ammoniacal leaching agent used in this embodiment is NH 3 ·H 2 O-(NH 4 ) 2 SO 4 Mixed leaching system, initial ammonia concentration [NH 3 ] T Control to 140g·L -1 , The liquid-solid ratio during leaching is (ml·g -1 ) 12:1, after stirring and leaching at room temperature for 2 hours, slowly add hydroxylamine sulfate as a reducing agent. The amount of hydroxylamine sulfate added is twice the content of cobalt in the raw material of permanganese-cobalt than nickel...
Example Embodiment
[0045] Example 3:
[0046] Kind of like figure 1 The method for separating nickel, cobalt and manganese in a raw material with high manganese-cobalt ratio of nickel-cobalt-manganese of the present invention includes the following steps:
[0047] (1) The primary nickel extraction product produced by a battery material factory in Hunan is a raw material with high manganese-cobalt ratio of nickel-cobalt-manganese. The primary nickel extraction product is obtained from laterite nickel ore after pressure acid leaching and alkaline precipitation. The composition includes nickel and cobalt hydroxide precipitation slag. The main element content is determined as shown in Table 2 below, where the moisture content in the raw material is 48.29%, and the mass ratio of manganese and cobalt elements is 2.94;
[0048] Table 2: Analysis of the main chemical elements of the primary nickel extraction products in Example 3
[0049]
[0050] (2) Mix the high manganese-cobalt ratio nickel-cobalt-manganese...
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