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US 12,334,556 B2Granted
Lead-based alloy and related processes and products
AssigneeRSR Technologies, Inc.
InventorsR. David Prengaman, Timothy W. Ellis, Matthew T. Raiford
Life of this patent
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Abstract
A lead-based alloy containing alloying additions of bismuth, antimony, arsenic, and tin is used for the production of doped leady oxides, lead-acid battery active materials, lead-acid battery electrodes, and lead-acid batteries.
Claims20
A process for production of a paste for lead-acid battery electrodes, the process comprising:
- blending water and doped leady oxide powder in a mixer to form a slurry, wherein the doped leady oxide powder comprises an oxidation product of a lead-based alloy and wherein the lead-based alloy comprises, in percent by total alloy weight:
- 0.0010% to 0.0300% antimony;
- 0.0010% to 0.0300% arsenic;
- 0.0010% to 0.0100% tin;
- and
- balance lead and incidental impurities;
- and
- adding aqueous sulfuric acid to the slurry, wherein the slurry is constantly mixed while the aqueous sulfuric acid is being added and wherein the aqueous sulfuric acid reacts with the doped leady oxide in the slurry to form a doped leady sulfate.
5 more elements
A process for the production of a lead-acid battery electrode, the process comprising:
- blending water and doped leady oxide powder to form a slurry, wherein the doped leady oxide powder comprises an oxidation product of a lead-based alloy and wherein the lead-based alloy comprises, in percent by total alloy weight:
- 0.0010% to 0.0300% antimony;
- 0.0010% to 0.0300% arsenic;
- 0.0010% to 0.0100% tin;
- and
- balance lead and incidental impurities;
- adding aqueous sulfuric acid to the slurry, wherein the slurry is constantly mixed while the aqueous sulfuric acid is being added and wherein the aqueous sulfuric acid reacts with the doped leady oxide in the slurry to form a doped leady sulfate;
- applying the slurry to a lead-based alloy grid to form a pasted grid;
- and
- curing the slurry on the lead-based alloy grid.
7 more elements
A process for the production of a paste for lead-acid battery electrodes, the process comprising:
- blending water and doped leady oxide powder in a mixer to form a slurry wherein the doped leady oxide powder comprises an oxidation product of a lead-based alloy and wherein the lead-based alloy comprises, in percent by total alloy weight:
- 0.0010% to 0.0300% antimony;
- 0.0010% to 0.0300% arsenic;
- 0.0010% to 0.0100% tin;
- and
- balance lead and incidental impurities;
- adding aqueous sulfuric acid to the slurry, wherein the slurry is constantly mixed while the aqueous sulfuric acid is being added, wherein the aqueous sulfuric acid reacts with the doped leady oxide in the slurry to form a doped leady sulfate, and wherein the addition of the aqueous sulfuric acid causes expansion of the slurry;
- cooling the slurry concurrently with the adding of the aqueous sulfuric acid;
- and
- adding one or more additives selected from the group consisting of:
- polyester fibers;
- red lead;
- seeding materials;
- expander materials;
- and
- binder materials.
13 more elements
Dependencies are inferred from the claim text.