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09/25/08 - USPTO Class 204 | 310 views | #20080230381 | Prev - Next | About this Page

System for the electrolytic production of sodium chlorate

Title: System for the electrolytic production of sodium chlorate

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20080230381, System for the electrolytic production of sodium chlorate.

1. System for sodium chlorate production comprising at least one electrolytic cell equipped with a multiplicity of cathodes and a multiplicity of anodes, fed with a sodium chloride brine added with a buffering agent, wherein the buffering agent comprises at least 1 g/l of phosphate ions.

2. The system of claim 1, the cathodes of the electrolytic cell comprising a ferrous matrix provided with a coating comprising a molybdenum and/or tungsten alloy with at least one metal selected from the group of iron, cobalt and nickel.

3. The system of claim 1, wherein the feed contains chromate and dichromate ions at a concentration not exceeding 0.1 g/l.

4. The system of claim 1, the feed being free of chromium.

5. The system of claim 2, the ferrous matrix of the cathodes comprising a carbon steel.

6. The system of claim 5, the coating comprising a galvanic coating containing 30 to 70% Fe and 30 to 70% Mo expressed as weight percentage.

7. The system of claim 6, the galvanic coating having a thickness between 10 and 50 micrometres.

8. The system of claim 1, the electrolytic cell comprising a cell of the undivided type and the cathodes are disposed in a comb-like fashion intercalated to the anodes.

9. The system of claim 8, the cathodes comprising a ferrous matrix comprising a perforated sheet.

Brief Patent Description - Full Patent Description - Patent Claims

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