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Method for recovering manganese from cobalt manganese polymetallic oxide ore

A technology for polymetallic oxide ore, cobalt and manganese, applied in the field of wet reduction pretreatment, beneficiation and recovery of manganese, can solve the problems of complex comprehensive recovery process, low manganese content and high cost, and achieve good separation effect, high manganese recovery rate, Good quality product

Active Publication Date: 2018-06-29
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the close symbiosis of manganese minerals in cobalt-manganese polymetallic ore and impurity minerals such as gangue, direct physical beneficiation cannot be separated and enriched. The current public research methods are all through direct smelting to recover manganese, which can be roughly divided into pyrometallurgy and wet methods. to smelt
Pyro-smelting is mainly to reduce and smelt cobalt-manganese polymetallic ore at high temperature, reduce nickel, cobalt, and copper into alloys, and reduce manganese into smelting slag. Due to high-temperature melting reduction, energy consumption is high, and manganese and The gangue mineral impurities are not separated, resulting in low manganese content in the slag, affecting subsequent processing
Hydrometallurgy is to recover manganese from cobalt-manganese polymetallic ore by acid leaching. However, during acid leaching, metals such as nickel, cobalt, copper and manganese are leached into the solution at the same time, resulting in high content of heavy metal impurities in the manganese leaching solution. These impurities are removed in advance by precipitation, extraction and separation, and then carbonized and precipitated to recover manganese. The comprehensive recovery process of manganese is complicated and costly

Method used

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  • Method for recovering manganese from cobalt manganese polymetallic oxide ore

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Experimental program
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Effect test

Embodiment 1

[0021] Add the cobalt-manganese polymetallic oxide ore into the ammonia-ammonium carbonate solution with a total ammonia concentration of 120g / L and stir. After mixing evenly, add an appropriate amount of cuprous salt to the pulp and pass it into carbon monoxide for reduction treatment for 4 hours. Separation of solid and liquid to obtain manganese-containing slag and pretreated liquid. After pretreatment, the liquid is extracted and separated from valuable elements such as nickel, cobalt, and copper, and then returned to reduction leaching for use. Add water to the manganese-containing slag to prepare a 35% pulp, add sulfuric acid solution to adjust the pH of the pulp to 8-9, and then add 2.8kg of water glass / t slag, 2.5kg sodium oleate / t slag, after being stirred for 5 minutes, enter the flotation machine, after primary separation, the yield of manganese concentrate is 63.4%, the manganese content is 37.2%, and the total iron content is 1.5%.

Embodiment 2

[0023] Add the cobalt-manganese polymetallic oxide ore into the ammonia-ammonium sulfate solution with a total ammonia concentration of 80g / L and stir. After mixing evenly, add an appropriate amount of cuprous salt to the slurry and pass it into carbon monoxide for reduction treatment for 2 hours. Separation of solid and liquid to obtain manganese-containing slag and pretreated liquid. After pretreatment, the liquid is extracted and separated from valuable elements such as nickel, cobalt, and copper, and then returned to reduction leaching for use. Add water to the manganese-containing slag to prepare a 35% pulp, add sulfuric acid solution to adjust the pH of the pulp to 8-9, and then add 2.8kg of water glass / t slag, 2.5kg sodium oleate / t slag, after stirring for 5 minutes, it enters the flotation machine. After primary selection, the yield of manganese concentrate is 62.6%, the manganese content is 35.9%, and the total iron content is 1.3%.

Embodiment 3

[0025] Add the cobalt-manganese polymetallic oxide ore into the ammonia-ammonium sulfate solution with a total ammonia concentration of 60g / L and stir. After mixing evenly, add an appropriate amount of cuprous salt to the pulp and pass it through carbon monoxide for reduction treatment for 4 hours. Separation of solid and liquid to obtain manganese-containing slag and pretreated liquid. After pretreatment, the liquid is extracted and separated from valuable elements such as nickel, cobalt, and copper, and then returned to reduction leaching for use. Add water to the manganese-containing slag to prepare a 35% pulp, add sulfuric acid solution to adjust the pH of the pulp to 8-9, and then add 2.8kg of water glass / t slag, 2.5kg sodium lauryl sulfate / t slag, after stirring for 5 minutes, enter the flotation machine, after a primary separation, the yield of manganese concentrate is 61.4%, the manganese content is 35.5%, and the total iron content is 1.2%.

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Abstract

The invention discloses a method for recovering manganese from cobalt and manganese polymetallic oxidized ore and belongs to the field of comprehensive utilization of cobalt and manganese polymetallic ore. Cobalt and manganese polymetallic oxidized ore undergoes wet reduction pretreatment in an ammonia solution by using a reducing agent; and manganese mineral and impurity minerals undergo chemical dissociation and activation, and then high intensity magnetic separation and flotation separation are carried out to recover manganese so as to obtain manganese concentrate. According to the invention, manganese is recovered from cobalt and manganese polymetallic oxidized ore by chemical activation and physical concentration. The technological process is simple, and cost is low.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of cobalt-manganese polymetallic ores, and relates to a method for recovering manganese from cobalt-manganese polymetallic oxide ores, in particular to a method for recovering manganese through wet reduction pretreatment and then beneficiation. Background technique [0002] Cobalt-manganese polymetallic oxide ores generally refer to polymetallic complex oxide ores rich in cobalt, nickel, copper, manganese, iron and other valuable elements, which are divided into land polymetallic nodules, seabed polymetallic nodules, seabed cobalt-rich crusts, Seabed cobalt nodules, etc. The main useful elements include manganese, nickel, cobalt, copper, etc., and manganese has the largest economic value. Among them, deep-sea polymetallic nodules are mainly composed of water, iron and manganese oxides, accompanied by a large amount of copper, cobalt, nickel, rare earths, and scattered valuable metals. They...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/30B03C1/015
CPCB03C1/015B03C1/30
Inventor 冯林永蒋伟张登高刘巍蒋开喜蒋训雄汪胜东范艳青靳冉公李达周立杰
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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