Method for combined resourceful treatment of lead concentrate and zinc anode mud
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A technology of zinc anode slime and lead concentrate, which is applied in the direction of lead sulfate and process efficiency improvement, and can solve the problems of secondary pollution and low recycling rate
Inactive Publication Date: 2016-08-31
王树立
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[0019] The purpose of the present invention is to provide a method for combined resource treatment of lead concentrate and zinc anode slime to solve the problems of l
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Embodiment 1
[0074] The method for combined resource treatment of lead concentrate and zinc anode slime in this embodiment, the process flow is as follows figure 1shown, including the following steps:
[0075] 1) In a 1000mL reaction flask equipped with a stirrer, a thermometer, a pH meter and a reflux condenser, add 523mL of water, start stirring and heating, then add 254mL of 22% hydrochloric acid, 247g of 99% sodium chloride and 98% six Ferric chloride hydrate 308g (, FeCl 3 The concentration of NaCl is 15%, the concentration of NaCl is 20%, the concentration of HCl is 5%), after dissolving completely, control temperature 70 ℃, add the three-grade lead concentrate (dry base) that 200g contains lead 55% in reaction bottle , insulated and stirred for 3 hours; after the reaction, the temperature was lowered to 60°C for suction filtration to obtain filtrate A and filter cake A, the filtrate A was brownish yellow, and the filter cake A was gray, weighing 151.5g, and treated separately;
[...
Embodiment 2～4
[0089] The combined resource treatment method of lead concentrate and zinc anode slime in Examples 2-4 is basically the same as that of Example 1, except that the reaction conditions of each step are different, which are listed in Table 3.
[0090] The reaction conditions of each step of the method of table 3 embodiment 2~4
[0091]
[0092]
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Abstract
The invention discloses a method for combined resourceful treatment of lead concentrate and zinc anode mud. The method comprises the following steps: 1, carrying out oxidation leaching on the lead concentrate by using an acidic solution of iron chloride and sodium chloride to obtain a filtrate A; 2, adding sodium sulfate to the filtrate A, and carrying out a lead precipitation reaction to obtain a filtrate B; 3, adding the zinc anode mud and hydrochloric acid to the filtrate B, and carrying out a manganese leaching reaction to obtain a filter cake C; 4, adding a sodium carbonate solution to the filter cake C, and carrying out a conversion rate to obtain a filter cake D; 5, adding nitric acid to the filter cake D, carrying out an acidolysis reaction, and filtering the obtained reaction solution to obtain a filtrate E; and 6, adding the filtrate D and/or sodium sulfate to the filtrate E, carrying out a lead precipitation reaction, and filtering the obtained reaction solution to obtain a filter cake F which is crude lead sulfate. The above treatment method realizes combined resourceful treatment and comprehensive recycling of the lead concentrate and the zinc anode mud, and has very good economic, environmental and social benefits.
Description
technical field [0001] The invention belongs to the technical field of recycling metallurgical waste, and in particular relates to a combined resource treatment method of lead concentrate and zinc anode slime. Background technique [0002] The main component of galena in lead ore is lead sulfide (PbS), which is mostly mixed with sphalerite (ZnS), argentite (Ag 2 S) symbiotic, and contains pyrite (FeS 2 ), chalcopyrite (CuFeS 2 ), arsenite (FeAsS), bismuthite (Bi 2 S 3 ) and other sulfides, as well as gangue minerals such as limestone and quartz. After crushing, pulverizing, and beneficiation, the produced lead concentrate generally contains (%): lead (Pb) 50-60, sulfur (S) 15-25, iron (Fe) 14, zinc (Zn) 4-6, di Silicon oxide (SiO 2 )1-2, copper (Cu) 0.2, also contains a small amount of arsenic (As), bismuth (Bi), cadmium (Cd), silver (Ag), antimony (Sb), indium (In), gold (Au), etc. Scattered metals and precious metal elements. [0003] Due to the difference in origi...
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