Lead alloy anode material and smelting method for electrodeposition zinc

A technology of anode material and lead alloy, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of short anode service life, high manufacturing cost, poor manufacturing technology stability, etc., and achieve improved corrosion resistance, excellent mechanical properties and The effect of corrosion resistance

Active Publication Date: 2013-06-19
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the lead alloy anode, the latter two new anodes have the advantages of low oxygen evolution overpotential, low/no lead pollution, etc., but due to the defects of poor manufacturing technology stability, high manufacturing cost and short service life of the anode, the two anodes are limited. Popularization and application of a new type of anode in the zinc electrowinning industry
[0005] Petrova M and Takasaki Y et al found that adding calcium as a hardener can significantly improve the m

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A lead alloy anode material for electrolytic deposition of zinc. The anode material is a low-silver lead-calcium-strontium-aluminum multi-element alloy, and the weight percentage of each component is: silver 0.2%, calcium 0.08%, strontium 0.05%, aluminum 0.005%, The balance is lead. Its lead ingots are processed into 760×1030×60mm samples.

[0028] The melting method steps are as follows:

[0029] Melt 1090 kg of lead ingots with a purity of 99.9 wt% at 360°C, add 2.33 kg of silver flakes with a purity of 99.99 wt% after melting, rapidly raise the temperature to 600°C with stirring, keep it warm for 15 minutes, and then add 60 gram purity of 99.9wt% aluminum plate with a thickness of 2 mm, after the aluminum is partially melted, the temperature is lowered to 530°C, and 62.2 kg of lead-calcium master alloy containing 1.5 wt% of calcium and 11.66 kg of lead-calcium alloy containing 5 wt% of strontium are respectively added The strontium master alloy is stirred for 15 mi...

Embodiment 2

[0032] A lead alloy anode material for electrolytic deposition of zinc. The anode material is a low-silver lead-calcium-strontium-aluminum-neodymium multi-element alloy, and the weight percentage of each component is: silver 0.15%, calcium 0.1%, strontium 0.04%, aluminum 0.01% , Neodymium 0.05%, the balance is lead. Its lead ingots are processed into 760×1030×60mm samples.

[0033] The melting method steps are as follows:

[0034] Melt 1134.4 kg of lead ingots with a purity of 99.9 wt% at 380°C, add 1.75 kg of silver powder with a purity of 99.99 wt% and a particle size of 5-20 μm after melting, rapidly heat up to 600°C with stirring, and Keep warm for 10 minutes, then add 120 grams of aluminum plates with a purity of 99.9wt% and a thickness of 4 mm. After the aluminum is partially melted, lower the temperature to 550 ° C, and add 23.32 kilograms of calcium-containing 5wt% lead-calcium master alloy, 5.83 kilograms of Strontium 8wt% lead-strontium master alloy and 0.57 kg ele...

Embodiment 3

[0037]A lead alloy anode material for electrolytic deposition of zinc. The anode material is composed of low-silver lead-calcium-strontium-aluminum-ddymium-praseodymium multi-element alloy anode, and the weight percentage of each component is: silver 0.2%, calcium 0.07%, strontium 0.06%, 0.01% aluminum, 0.05% neodymium, 0.05% praseodymium, and the balance is lead. Its lead ingots are processed into 760×1030×60mm samples.

[0038] The melting method steps are as follows:

[0039] 1149.6 kg of lead ingots with a purity of 99.9 wt% were melted at 400°C, and after melting, 2.33 kg of silver ingots with a purity of 99.99 wt% and a thickness of 50 mm were added, and the temperature was rapidly raised to 600°C with stirring, and kept for 20 minutes. Then add 120 grams of aluminum plates with a purity of 99.9wt% and a thickness of 6mm. After the aluminum is partially melted, the temperature is lowered to 540°C, and 8.162 kg of lead-calcium master alloy containing 10 wt% of calcium an...

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Abstract

The invention discloses lead alloy anode material and a smelting method for electrodeposition zinc and belongs to the technical field of preparation of lead alloy anode material and a smelting method for the electrodeposition zinc. The anode material comprises the following components by percent by weight: 0.1-0.3% of silver, 0.05-0.15% of calcium, 0.02-0.06% of strontium, 0.005-0.03% of aluminum, 0-0.1% of rare earth meal, and lead of allowance. The melting process includes that after lead is melted, aluminum powder/silver piece/silver ingot is added by proportion, an aluminum plate is added by proportion after the silver is melted, after the aluminum is partly melted, the lead calcium, the lead strontium alloy and the rare earth metal are added by proportion and stands after mixed, scum is removed, and blank alloy pig is cast. The anode material has good mechanical performance and anti-corrosion resistance performance, can obviously prolong service life of an anode in the process of wet process electrodeposition zinc process, and reduces bath voltage and energy consumption of the process of electrodeposition.

Description

technical field [0001] The invention belongs to the technical field of lead alloy anode material for electrolytic zinc deposition and its preparation, and in particular relates to a lead alloy anode material for electrolytic zinc deposition and a melting method thereof. Background technique [0002] According to the characteristics of zinc resources, zinc smelting methods can generally be divided into two types: fire method and wet method. Compared with pyro-method zinc smelting, hydro-method zinc smelting occupies an important position in industrial production due to its advantages of large production capacity, high efficiency, good operating conditions, ability to process low-grade complex ores, low environmental pollution and comprehensive recovery of valuable metals. took a dominant position. At present, the zinc produced by wet method accounts for more than 80% of the total zinc in the world, and generally new zinc smelting adopts zinc hydrometallurgy. [0003] Accord...

Claims

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Application Information

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IPC IPC(8): C22C11/00C22C1/03C25C7/02C25C1/16
CPCY02P10/20
Inventor 袁学韬吕旭东华志强王磊李弢
Owner GRIMAT ENG INST CO LTD
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