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Method for reclaiming cobalt from manganese cobalt slag

A cobalt-nickel, manganese-cobalt technology, applied in the field of hydrometallurgy, can solve the problem of no recovery, etc., and achieve the effects of saving chemical reagent materials, less consumption of chemical reagents, and high recovery rate

Inactive Publication Date: 2008-12-17
广西冶金研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the method of recovering Co and Ni from the purification slag of manganese ore leachate

Method used

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  • Method for reclaiming cobalt from manganese cobalt slag
  • Method for reclaiming cobalt from manganese cobalt slag
  • Method for reclaiming cobalt from manganese cobalt slag

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Embodiment Construction

[0019] The technical solutions of the present invention will be described in further detail below through examples.

[0020] The method for reclaiming cobalt-nickel from manganese-cobalt slag of the present invention, concrete operating steps are:

[0021] 1. Add water to mix slurry, heat and bubble

[0022] The purification slag produced in the manganese ore leaching process, referred to as manganese-cobalt slag (the full text is called manganese-cobalt slag), takes 800 grams of this slag (dry weight 544 grams), and the slag contains 5.02 grams of Co, 13.06 grams of Ni, and 32.69 grams of Mn , Fe 30.90 grams. Add water to a 3-liter beaker to dilute to 2200ml, stir and adjust the slurry, while heating and bubbling, and remove the foam slag. The test results are shown in Table 1.

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Abstract

The invention discloses a method for recycling cobalt and nickel from manganese and cobalt slag, comprising the following steps of: adding water into the manganese and cobalt slag according to a solid-to-liquid ratio of 1: 2 to 5 so that the manganese and cobalt slag becomes slurry, heating, bubbling and stirring to obtain cobalt-nickel foaming slag and ferromanganese sediment, heating the cobalt-nickel foaming slag to a temperature of 80 DEG C to 85 DEG C, washing the cobalt-nickel foaming slag with 0.5 to 2 mol / L of H2SO4 and controlling the pH value of the cobalt-nickel foaming slag to be at 1.5 to 2.5, filtering and then obtaining cobalt-nickel filter cake, curing and leaching with concentrated sulfuric acid on a base that the ratio of cobalt-nickel filter cake (dry-substrate weight) to concentrated sulfuric acid (volume) equals to 1:0.5 to 1.5 so as to obtain a cobalt-nickel solution and finally deeply purifying and extracting according to traditional technology to separate cobalt and nickel. The method can effectively separate Co and Ni from Mn, Fe in manganese and cobalt slag and recycle economic cobalt and nickel from manganese and cobalt slag; the extraction ratio of cobalt and nickel in manganese and cobalt slag is more than 95 percent.

Description

1. Technical field [0001] The invention relates to a hydrometallurgy method for recovering precious elements from non-ferrous metal smelting waste slag, especially a method for recovering cobalt and nickel from manganese-cobalt slag. 2. Background technology [0002] Cobalt and nickel are more or less contained in manganese ores in southern my country. For example, a manganese ore is associated with Co0.063% and Ni0.102%. When developing manganese ore resources, as long as electrolytic metal manganese, electrolytic manganese dioxide, manganese sulfate...etc. . During the leaching process of manganese ore, when the pH of the leaching end point is controlled to be 5-5.4, most of the impurity elements such as Fe can be removed, but Co and Ni are still all left in the solution. For the subsequent treatment process of the solution, Co and Ni are harmful impurities and must be removed; for cobalt and nickel themselves, they are extremely valuable non-ferrous metal elements and m...

Claims

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Application Information

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IPC IPC(8): C22B23/00C22B7/04C22B3/08
CPCY02P10/20
Inventor 伍耀明刘晨何航军陈克勤
Owner 广西冶金研究院有限公司
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