Sulfur coating of urea treated with attapulgite clay
| Autor: | C. L. Simmons, R. G. Lee, L. L. Gullett |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
inorganic chemicals
Inorganic chemistry Formaldehyde Soil Science Substrate (chemistry) chemistry.chemical_element Calcium lignosulfonate engineering.material Sulfur chemistry.chemical_compound chemistry Coating Urea engineering General Earth and Planetary Sciences Agronomy and Crop Science Dissolution General Environmental Science Nuclear chemistry |
| Zdroj: | Fertilizer Research. 28:123-128 |
| ISSN: | 1573-0867 0167-1731 |
| DOI: | 10.1007/bf01048864 |
| Popis: | A commercial attapulgite-type gelling clay was added as a conditioning-hardening agent to urea which was then tested as a substrate for sulfur coating. The coating tests were made in bench-scale batch equipment. The total coating weights and the 7-day dissolution rates of the sulfur-coated products were determined and compared with those from similar tests of previously made sulfur-coated urea products containing calcium lignosulfonate or formaldehyde. Compared with urea substrates containing formaldehyde, the urea containing attapulgite clay required about one-third less sulfur coating to attain the same 7-day dissolution rate. The urea containing attapulgite clay and the urea containing calcium lignosulfonate were about equally effective as substrates for sulfur coating. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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