Preparation methods of calcium sulphate and urea adduct

• Authors: Przemysław Malinowski , Andrzej Biskupski , Józef Głowiński
• Languages of publication: EN

Abstracts

EN

The paper presents the results of laboratory studies on the preparation of calcium sulphate and urea adduct by: grinding, compacting and mixing in the presence of physical water. A method for the measurement of urea conversion into the adduct form, which is based on the difference in solubility of free urea and the adduct bound urea CaSO4·4CO(NH2)2 in n-butanol, was developed. Mixing the reagents in the presence of physical water produced the best results. High urea conversion into the adduct form, over 85%, in the prepared samples indicates that this method can be successfully used to get CaSO4·4CO(NH2)2 adduct.

Keywords

EN

adduct; calcium sulphate; fertilizer; gypsum; phosphogypsum; urea

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2007
• Volume: 9
• Issue: 4
• Pages: 111-114

Dates

published

1 - 12 - 2007

online

30 - 1 - 2008

Contributors

author

Przemysław Malinowski

• The State Higher Vocational School, ul. Grodzka 19, 48-300 Nysa, Poland

author

Andrzej Biskupski

• Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

Józef Głowiński

• Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

References

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Identifiers

DOI

10.2478/v10026-007-0102-z