Method for separating lead and silver from manganese in anode sludge

A technology for anode slime and lead separation, applied in magnetic separation, solid separation, wet separation, etc., can solve problems such as no discovery, and achieve the effect of low production cost and simple process

Inactive Publication Date: 2010-04-07
HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD
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Problems solved by technology

[0007] The above papers or patent documents about the separation of lead, silver and manganese in electrolytic zinc (or electrolytic manganese) anode slime all adopt wet or pyrometallurgical methods, and all adopt the method of reducing tetravalent manganese dioxide in the anode slime to Divalent Mn 2+ There is n...

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  • Method for separating lead and silver from manganese in anode sludge
  • Method for separating lead and silver from manganese in anode sludge
  • Method for separating lead and silver from manganese in anode sludge

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example 1

[0022] Example 1: Chemical analysis of an electrolytic zinc anode slime (see Table 1) shows that it contains 32.1% of Mn, 19.8% of Pb, and about 1223g / t of silver. XRD diffraction analysis results (see figure 1 ) shows that the lead in the anode slime is mainly PbSO 4 Existence, manganese mainly as KMn 8 o 16 exist. After the anode slime is countercurrently washed with water, the pH of the pulp changes from about 1 to about 5, and the solid-liquid separation obtains the filter residue and about three times the weight of the residue washing filtrate. The filter residue contains about 36% of manganese, about 21% of lead, and 1350g of silver. / t or so, the filtrate contains H 2 SO 4 28g / l 4 , containing 5.6g / l zinc and 2.1g / l manganese.

[0023] Table 1 Chemical analysis results of a certain zinc anode slime

[0024] project

mn

Pb

Ag(g / t)

Zn(water)

Mn(water)

h 2 o

h 2 SO 4 (water)

content(%)

32.07

19.76

...

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Abstract

The invention relates to a method for realizing the separation of lead and silver and the like from manganese in anode sludge. The method takes a physical benefication method, such as magnetic separation, reselection and flotation and the like as a main part, and comprises two steps: the first step: preprocessing the anode sludge, washing the anode sludge by water, removing reacted acid, water-soluble zinc or water-soluble manganese in the anode sludge; the second step: carrying out selective ore grinding on the anode sludge to a certain fineness, and processing by utilizing the physical benefication method, such as reselection, magnetic separation and flotation and the like to realize the separation of manganese from lead and silver. The invention has the following three characteristics: 1. the mode of existence of manganese in manganic concerntrate products is kept to be unchanged as quadrivalent manganese compound of manganese dioxide or potassium manganate with the same raw materials; 2. the physical benefication method adopting reselection, magnetic separation or flotation has simple process, lower manufacturing cost than the manufacturing cost generated by utilizing a wet process or a firing process; and 3. the physical benefication method adopting reselection, magnetic separation or flotation does not generate three waste pollution in the whole manufacturing process.

Description

technical field [0001] The invention relates to a method for separating lead, silver and manganese from anode slime, in particular to a method for realizing the separation of lead, silver and manganese in zinc anode slime (or manganese anode slime). Background technique [0002] The main component of electrolytic zinc anode slime (or electrolytic manganese anode slime) is manganese dioxide, followed by lead and a small amount of silver and tin. [0003] In wet zinc smelting plants, the zinc electrolytic anode slime with manganese dioxide as the main component is generally returned to the zinc leaching process. One of the purposes is to make the manganese oxide in it act as an oxidant, which is beneficial to improve part of the calcined sand. The leaching rate of refractory zinc sulfide minerals; the second purpose is to help remove excess iron in the leaching solution and improve the quality of electrolytic zinc; the third purpose is to reduce solid manganese oxide to liquid...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00B03B5/00B03C1/00B03D1/00B03B5/04B03B5/62B03D1/014B03D1/012B03D1/008B03D101/02B03D101/04
Inventor 向平凌丽肖功明凌虹
Owner HUNAN HUAQI RESOURCES ENVIRONMENT SCI & TECH DEV CO LTD
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