Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF2 Cites 7 Cited by
  • 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 mechanical properties of lead anodes; Su Xiangdong and Zhang Shulan found that the addition of strontium can effectively improve the corrosion resistance of lead alloy anodes, but calcium Both strontium and strontium are active metals, easily oxidized
Despite the premise of using aluminum as a protective agent, the oxidation and burning loss of calcium and strontium during the smelting process is still very serious, with a loss rate of 15% to 20%, which greatly affects the stability of alloy components

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com