A beneficiation method for comprehensive recovery of combined silver and copper from low-grade manganese-bearing ores

A beneficiation method and manganese ore technology are applied in the field of comprehensive recovery combined with silver and copper beneficiation, which can solve the problems of low degree of industrialization, high cost, and single type of recovered metal, and achieve the effect of low-cost, high-efficiency recovery and good recovery effect.

Active Publication Date: 2022-03-29
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects or deficiencies of the existing wet leaching treatment of manganese minerals, such as high cost, single type of recovered metal, and low degree of industrialization, and provide a mineral processing method for comprehensively recovering combined silver and copper from low-grade manganese-containing ores

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The raw ore is iron-manganese polymetallic mine in Northwest Yunnan, China, with a grade of manganese of 3.87%, a grade of silver of 63.56g / t, and a grade of copper of 0.39%.

[0041] The raw ore is crushed by the jaw crusher and then enters the ball mill to grind to obtain the product. The grinding fineness is -0.074mm, accounting for 70%. Grinding products enter the ceramic filter, the filtrate returns to the grinding operation, the filter cake is added to the circulating acid leaching solution, the concentration is guaranteed to be 35%, and 20Kg of scrap iron scraps are added to each ton of raw ore and stirred evenly, and then 130Kg of concentrated sulfuric acid is added to ensure that every ton of raw ore The pH of the first tank is 3.5, and the strong stirring leaching is carried out. The stirring and leaching time is 4 hours, and the linear speed of the end of the stirring impeller is 4m / s. The acid leaching pulp is fed into the filter press by the acid-resistant ...

Embodiment 2

[0044] The raw ore is iron-manganese polymetallic mine in Northwest Yunnan, China, with a grade of manganese of 2.21%, a grade of silver of 43.66g / t, and a grade of copper of 0.28%.

[0045]The raw ore is crushed by the jaw crusher and then enters the ball mill to grind to obtain the product. The grinding fineness is -0.074mm, accounting for 80%. Grinding products enter the ceramic filter, the filtrate returns to the grinding operation, the filter cake is added to the circulating acid leaching solution, the concentration is guaranteed to be 35%, and 17Kg of scrap iron scraps are added to each ton of raw ore and stirred evenly, and then 100Kg of concentrated sulfuric acid is added to ensure that each ton of raw ore The pH of the first tank is 3.5, and the strong stirring leaching is carried out. The stirring and leaching time is 5 hours, and the linear speed of the end of the stirring impeller is 5m / s. The acid leaching pulp is fed into the filter press by the acid-resistant sa...

Embodiment 3

[0048] The raw ore is a manganese polymetallic mine in Guangxi, China, with a grade of manganese of 4.91%, a grade of silver of 78.35g / t, and a grade of copper of 0.43%.

[0049] The raw ore is crushed by the jaw crusher and then enters the ball mill to grind to obtain the product. The grinding fineness is -0.074mm, accounting for 75%. Grinding products enter the ceramic filter, and the filtrate returns to the grinding operation. The filter cake is added to the circulating acid leaching solution, and the concentration is guaranteed to be 40%. First, 25Kg of scrap iron scraps are added to each ton of raw ore and stirred evenly, and then 150Kg of concentrated sulfuric acid is added to ensure that every ton of raw ore The pH of the first tank is 3, and the leaching with strong stirring is carried out. The stirring and leaching time is 4 hours, and the linear speed at the end of the stirring impeller is 4.3m / s. The acid leaching pulp is fed into the filter press by the acid-resist...

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Abstract

The invention relates to a beneficiation method for comprehensively recovering combined silver and copper from low-grade manganese-containing ores. The beneficiation method includes crushing, ore grinding, iron reduction and leaching of copper and manganese in a sulfuric acid medium, replacement of copper with acid leaching solution, cyanide leaching of silver from acid leaching slag, and replacement of silver and copper with zinc in cyanide solution. According to the mineral properties of bound copper and bound silver that are ubiquitous in the forms of isomorphism, lattice substitution, and colloidal adsorption in manganese minerals, the present invention uses low-cost iron to realize manganese, silver, copper The chemical dissociation of the combination, the dissolution of each element in the form of ions, realized the simultaneous leaching of manganese and copper in the acid leaching solution; It enters the solid phase in the form of precipitation, and then is leached by cyanide to make it enter the liquid phase. It is combined with copper in other minerals and recovered together with zinc replacement.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a mineral processing method for comprehensively recovering combined silver and copper from low-grade manganese-containing ores. [0002] technical background [0003] Manganese minerals usually coexist with iron minerals, and mostly form a solid solution composed of nano-colloidal particles under the action of natural oxidation and leaching. There are many gaps between manganese minerals and large specific surface area. Silver, copper and other congener elements diffuse into manganese hydroxide colloids through co-precipitation or adsorption, forming refractory silver-copper minerals combined with manganese, in which silver and copper are both In the form of isomorphism, it enters the tunnel structure and layered structure of manganese in an atomic state, and cannot be separated by physical beneficiation. [0004] The treatment methods of single manganese-s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B3/44C22B15/00C22B3/46C22B11/08C22B1/00
CPCC22B3/08C22B3/44C22B15/0006C22B15/0071C22B15/0089C22B3/46C22B11/08C22B11/04C22B1/00Y02P10/20
Inventor 李沛伦邱显扬胡真杨凯志姚艳清汪泰李强李汉文邹坚坚王成行丘世澄时晗
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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