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2 115 642

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Application

97101308/13, 1997-01-29

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Actual filing date

1997-01-29

(45)

Published

1998-07-20

(72)

Inventor

Solov'Janov A.A.Gorlov E.G.Golovin G.S.Kost L.A.Koledin D.M.Pushkanov V.V.Rodeh V.V.

(73)

Holder

Institut Gorjuchikh Iskopaemykh Mintopehnergo Rf

METHOD OF PRODUCING BALLASTLESS HUMIN PLANT-GROWTH STIMULATORS Russian patent published in 1998 - IPC

Abstract RU 2115642 C1

FIELD: plant-growth stimulators. SUBSTANCE: two-step drying of brown coal is carried out in swirl chamber under flue gas atmosphere containing 0.5-3.5 vol % oxygen at 200-250 and 350-420 C, respectively. Dried coal is mixed with aqueous alkali solution, and resulting suspension is stirred and treated for 0.5-2 h in circulation mode in dispersing apparatus according to scheme: stirrer-disperser-stirrer. Treated suspension is separated into aqueous phase and solid residue. The former is dried to yield desired product. EFFECT: increased yield of the most active part of humin acids. 1 tbl

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RU 2 115 642 C1

Authors

Solov'Janov A.A.

Gorlov E.G.

Golovin G.S.

Kost L.A.

Koledin D.M.

Pushkanov V.V.

Rodeh V.V.

Dates

1998-07-20—Published

1997-01-29—Filed

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