Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1987-05-08
1989-03-07
Lander, Ferris H.
Chemistry: fertilizers
Processes and products
Inorganic material
71903, 423328, 423324, 423331, C05G 306, C05D 500, C05D 900
Patent
active
048102806
ABSTRACT:
The present invention relates to a method for enhancing the water-retention capacity of soils and providing plant nutrients to same over an extended period of time. This method comprises the admixing of soils with from 2 to 30% by weight of a chryso-zeolite of type A/and or X which comprises a magnesium leached asbestos matrix having an SiO.sub.2 content of 37 to 60% wt %, an MgO content of 0.1 to 15% by weight, an Fe.sub.2 O.sub.3 content of 0.1 to 2.5% by weight and containing from 10 to 25% by weight of Al.sub.2 O.sub.3 and from 25 to 35% by weight of Na.sub.2 O, and/or K.sub.2 O, and/or CaO, and/or (NH.sub.4).sub.2 O.
REFERENCES:
patent: 2882244 (1959-04-01), Milton
patent: 3094383 (1963-06-01), Dzierzonowski et al.
patent: 3623858 (1971-11-01), Smith et al.
patent: 4511667 (1985-04-01), Mao
patent: 4615995 (1986-10-01), Mao
Dunnigan Jacques
Le Van Mao Raymond
Levesque Pierre
McLaughlin Gerald P.
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