LOW-FLUORINE PHOSPHATIC FERTILIZER AND METHOD FOR MANUFACTURING THE SAME

LOW-FLUORINE PHOSPHATIC FERTILIZER AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a phosphatic fertilizer which is little in a fluorine content and fluorine elution rate. SOLUTION: This low-fluorine phosphatic fertilizer is decreased in the fluorine content to

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Hauptverfasser: OIKAWA SHIGEKI, NAWATA TOYOHIRO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERTILISERS
FERTILISERS CHARACTERISED BY THEIR FORM
MANUFACTURE THEREOF
METALLURGY
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05
MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
PHOSPHATIC FERTILISERS
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creator OIKAWA SHIGEKI
NAWATA TOYOHIRO
description PROBLEM TO BE SOLVED: To provide a phosphatic fertilizer which is little in a fluorine content and fluorine elution rate. SOLUTION: This low-fluorine phosphatic fertilizer is decreased in the fluorine content to
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SOLUTION: This low-fluorine phosphatic fertilizer is decreased in the fluorine content to &lt;=0.2 wt.% and the fluorine elution rate to &lt;=25 mg/l, more preferably to &lt;=8 mg/l by a first process step of preparing a sulfuric acid decomposing slurry by using raw material (phosphoric acid-lime raw material) essentially consisting of phosphoric acid-lime obtained from phosphoric acid subjected to defluorination treatment and adding sulfuric acid to this raw material and a second process step of adding the phosphoric acid-lime raw material and basic material to the slurry to neutralize the slurry and fixing the fluorine liberated into the slurry.</description><edition>7</edition><language>eng</language><subject>CHEMISTRY ; FERTILISERS ; FERTILISERS CHARACTERISED BY THEIR FORM ; MANUFACTURE THEREOF ; METALLURGY ; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 ; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS ; PHOSPHATIC FERTILISERS</subject><creationdate>2002</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20021009&amp;DB=EPODOC&amp;CC=JP&amp;NR=2002293679A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20021009&amp;DB=EPODOC&amp;CC=JP&amp;NR=2002293679A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OIKAWA SHIGEKI</creatorcontrib><creatorcontrib>NAWATA TOYOHIRO</creatorcontrib><title>LOW-FLUORINE PHOSPHATIC FERTILIZER AND METHOD FOR MANUFACTURING THE SAME</title><description>PROBLEM TO BE SOLVED: To provide a phosphatic fertilizer which is little in a fluorine content and fluorine elution rate. 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subjects CHEMISTRY
FERTILISERS
FERTILISERS CHARACTERISED BY THEIR FORM
MANUFACTURE THEREOF
METALLURGY
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05
MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
PHOSPHATIC FERTILISERS
title LOW-FLUORINE PHOSPHATIC FERTILIZER AND METHOD FOR MANUFACTURING THE SAME
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