Method of improving soil irrigation with an improved solution gr

Details Method of improving soil irrigation with an improved solution gr Method of improving soil irrigation with an improved solution gr

1995-09-05

1997-01-07

Suchfield, George A.

Hydraulic and earth engineering

Earth treatment or control

Chemical

47DIG10, 71903, 405 36, 473555, E02D 300, C01F 1146, C09K 1706

Patent

active

055909833

ABSTRACT:
A method of improving ground soil irrigation by employing an additive or amendment in the form of an improved synthetic solution grade calcium sulfate dihydrate composition. This composition is formulated by contacting a calcium compound having a calcium cation with a chemical agent enabling the calcium compound to yield calcium ions upon reaction with the chemical agent and which enables the calcium cation to react with an anion of the chemical agent forming a second calcium compound. The second calcium compound is reacted with a sulfur containing acid, such as sulfuric acid, to thereby form a calcium sulfate dihydrate. The compound has improved suspension characteristics and will remain in suspension for a much longer period of time than a conventional solution grade calcium sulfate dihydrate.

REFERENCES:
patent: 4136998 (1979-01-01), Bassier et al.
patent: 4191552 (1980-03-01), Large et al.
patent: 4462976 (1984-07-01), Karger
patent: 5376351 (1994-12-01), Nencini et al.
patent: 5501719 (1996-03-01), Shida et al.

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