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Process for preparing Pb-base mixed rare earth slab lattice alloy

A mixed rare earth, preparation technology, applied in the direction of electrode carrier/current collector, etc., can solve the problems of high water consumption, low self-discharge, and the battery cannot be sealed

Inactive Publication Date: 2006-01-18
XINXIANG CITY ZHUOWEI POWER SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the grid alloys used at home and abroad are lead-antimony-based and lead-calcium-based. The lead-ladder system can be used for high current and deep discharge. It can be used for start-up batteries. The lead-calcium system can only be discharged at room temperature with low current, low water consumption, low self-discharge, battery can be sealed, and has a long life, so it can only be used for fixed batteries. For this reason, it has been patented by the State Intellectual Property Office. The information center retrieves the following relevant documents,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: The alloy contains 0.4 kg of tin, 1.2 kg of arsenic, 0.1 kg of sulfur, 0.3 kg of mixed rare earth, and 998.5 kg of reduced lead. Sodium hydroxide, keep warm at this temperature for 30 minutes, stir, stand still for 5 minutes, remove the slag, add mixed rare earth, tin, arsenic, and sulfur together with a special feeder, keep warm at 560°C, and keep stirring for 30 minutes at this time Minutes, subject to complete melting, after standing for 5 minutes, remove the slag, cast ingots, the temperature is not lower than 450°C, and cast grids according to the grid casting process.

Embodiment 2

[0017] Example 2: The alloy contains 0.5 kg of tin, 1.5 kg of arsenic, 0.15 kg of sulfur, 0.4 kg of mixed rare earth, and 997.45 kg of reduced lead. Sodium hydroxide, keep warm at this temperature for 40 minutes, stir, stand still for 5 minutes, remove the slag, add mixed rare earth, tin, arsenic, and sulfur with a special feeder, keep warm at 600°C, and keep stirring for 40 minutes at this time Minutes, subject to complete melting, after standing for 5 minutes, remove the slag, cast ingots, the temperature is not lower than 480 ° C, and cast grids according to the grid casting process.

Embodiment 3

[0018] Example 3: The alloy contains 0.6 kg of tin, 1.8 kg of arsenic, 0.1 kg of sulfur, mixed rare earths, and 999.3 kg of pure lead. The pure lead is heated to 560 ° C, and the mixed rare earths, tin, arsenic, and sulfur are added to lead with a special feeder In the liquid, keep warm at the above temperature for 30 minutes, subject to complete melting, stand still for 5 minutes, remove slag, cast ingots, the temperature should not be lower than 450 ° C, and cast grids according to the casting process.

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PUM

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Abstract

The present invention is the preparation process of Pb-base mixed RE sheet grating alloy, and features that the alloy contains RE mixture in 0.03-0.04 wt% and the RE mixture consists of La 62.4-64.43 wt%, Ce 25.62-25.69 wt%, Pr 2.3-2.36 wt%, Nd 9.02-9.18 wt% and impurity not more than 0.5 wt%. The preparation process includes the following steps: heating reduced Pb or pure Pb to 560-600 deg.c, adding sodium hydroxide in 0.2 % for reduced Pb, maintaining for 30 min, stirring, letting stand to fish slag, adding RE mixture, Sn, As and S, maintaining at 560-600 deg.c, stirring for complete dissolving, fishing slag, and casting sheet grating at 450-480 deg.c. The sheet grating is used in accumulator.

Description

Technical field: [0001] The invention relates to a preparation process of a battery lead-based mixed rare earth grid alloy. Background technique: [0002] At present, the grid alloys used at home and abroad are lead-antimony-based and lead-calcium-based. The lead-ladder system can be used for high current and deep discharge. It can be used for start-up batteries. The lead-calcium system can only be discharged at room temperature with low current, low water consumption, low self-discharge, battery can be sealed, and has a long life, so it can only be used for fixed batteries. For this reason, it has been patented by the State Intellectual Property Office. The information center retrieves the following relevant literature, [0003] (1) ZL Patent No. 90101846.5 "A Method for Smelting Battery Grid Alloy". [0004] (2) Application No. 86103370 "A Production Method of Battery Grid Alloy". [0005] (3) Application No. 97119841.1 "Fully sealed maintenance-free lead-acid battery f...

Claims

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Application Information

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IPC IPC(8): C22C11/00H01M4/68
CPCY02E60/12Y02E60/10
Inventor 黄永岐
Owner XINXIANG CITY ZHUOWEI POWER SUPPLY