Selenium covered basic copper chloride, its preparation method and the use
US8518466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2008 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Sep 7, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A preparation method for selenium covered basic copper chloride includes the steps of: (a) adding crystalline basic copper chloride (TBCC), water and stabilizer in a reactor; adding sodium hydroxide solution with stirring; reacting to form a hydroxyl-modified crystalline basic copper chloride after discharge, washing, and negative pressure leaching; (b) adding the hydroxyl-modified crystalline basic copper chloride and water in the reactor, adding selenous acid with stirring; adding copper sulfate pentahydrate after reaction; forming selenium covered basic copper chloride comprising crystalline basic copper chloride, basic cuprous selenide, and basic cupric sulfate after discharge, rinsing, negative pressure filtration, and drying. The selenium covered basic copper chloride is used as feed addictives of trace elements having nonhygroscopic property, good liquidity, and stable chemical property. The selenium covered basic copper chloride is easy to incorporate with feed, low price, low cost in adding, weak acidic solubility, easy to absorb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.