GB828891A - Process for prodcuing phosphatic fertilizers - Google Patents

Process for prodcuing phosphatic fertilizers

Info

Publication number
GB828891A
GB828891A GB7809/56A GB780956A GB828891A GB 828891 A GB828891 A GB 828891A GB 7809/56 A GB7809/56 A GB 7809/56A GB 780956 A GB780956 A GB 780956A GB 828891 A GB828891 A GB 828891A
Authority
GB
United Kingdom
Prior art keywords
acid
phosphate
metaphosphate
phosphate rock
dolomite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7809/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUMAS Co
Original Assignee
LUMAS Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUMAS Co filed Critical LUMAS Co
Publication of GB828891A publication Critical patent/GB828891A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

A phosphate fertilizer is made by mixing an inorganic fertilizer material consisting of phosphate rock, dolomite, or limestone with the metaphosphate of calcium, sodium, or potassium, and treating the mixture with a mineral acid (sulphuric, nitric, hydrochloric, or phosphoric acid) in the presence of sufficient water to effect hydrolysis of the metaphosphate. The use of sulphuric acid with calcium metaphosphate is excluded. Hydrolysis and acidulation proceed concurrently, and the proportion of phosphate rock, dolomite, &c. is sufficient to neutralize the acid. In examples, approximately equal quantities of the meta-phosphate, phosphate rock, and acid are mixed together with a small amount of water to form a thick slurry, which is then delivered to a rotary drier at 150 DEG to 300 DEG F. After curing, a dry crumbly solid is formed. This may be ammoniated, using ammonia, or ammonium salts or urea/ammonium hydroxide solution followed by agitation until a dry granular product is obtained. The initial reactants may be treated with a small amount of a non-ionic surfaceacting agent, e.g. the condensation products of ethylene oxide with higher alcohols, alkyl phenols or mercaptans. Specification 828,892 is referred to.
GB7809/56A 1955-03-29 1956-03-13 Process for prodcuing phosphatic fertilizers Expired GB828891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US828891XA 1955-03-29 1955-03-29

Publications (1)

Publication Number Publication Date
GB828891A true GB828891A (en) 1960-02-24

Family

ID=22174090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7809/56A Expired GB828891A (en) 1955-03-29 1956-03-13 Process for prodcuing phosphatic fertilizers

Country Status (1)

Country Link
GB (1) GB828891A (en)

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