A method for producing ferrous sulphate and phosphoric acid
US-2026070788-A1 · Mar 12, 2026 · US
Preventing or reducing scale in wet-process phosphoric acid production
US9028787B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9028787-B2 |
| Application number | US-88886110-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 23, 2010 |
| Priority date | Sep 25, 2009 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
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Abstract
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Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a water-soluble functional organic reagent with a phosphoric acid at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce at least one species of scale are provided.
First claim
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We claim: 1. A method for preventing or reducing at least one species of scale in a wet-process phosphoric acid production process, the method comprising: adding to at least one stage of the wet-process phosphoric acid production process a scale preventing or reducing amount of a reagent selected from the group consisting of i) sulfonic acid or a compound having a sulfonic acid functional group selected from the group consisting of sulfosuccinic acid; 5-sulfosalicylic acid hydrat…
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- C01B25/22Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9028787B2 cover?
- Methods for preventing or reducing the formation of scale in a wet-process phosphoric acid production process by intermixing a water-soluble functional organic reagent with a phosphoric acid at one or more step of the phosphoric acid production process in an amount sufficient to prevent or reduce at least one species of scale are provided.
- Who is the assignee on this patent?
- Ravishankar Sathanjheri A, Wang Bing, Cytec Tech Corp
- What technology area does this patent fall under?
- Primary CPC classification C01B25/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 12 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).