UST105501I4 - Granulation of crystalline by-product ammonium sulfate - Google Patents

Granulation of crystalline by-product ammonium sulfate Download PDF

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Publication number
UST105501I4
UST105501I4 US06/654,278 US65427884A UST105501I4 US T105501 I4 UST105501 I4 US T105501I4 US 65427884 A US65427884 A US 65427884A US T105501 I4 UST105501 I4 US T105501I4
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United States
Prior art keywords
ammonium sulfate
percent
fine
instant invention
product
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.)
Pending
Application number
US06/654,278
Inventor
Cecil P. Harrison
Cullen G. Tittle
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Tennessee Valley Authority (ATV)
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Tennessee Valley Authority (ATV)
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 Tennessee Valley Authority (ATV) filed Critical Tennessee Valley Authority (ATV)
Priority to US06/654,278 priority Critical patent/UST105501I4/en
Assigned to TENNESSEE VALLEY AUTHORITY reassignment TENNESSEE VALLEY AUTHORITY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARRISON, CECIL P., TITTLE, CULLEN G.
Application granted granted Critical
Publication of UST105501I4 publication Critical patent/UST105501I4/en
Priority to US06/769,058 priority patent/US4589904A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
    • C05C3/005—Post-treatment

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

Abstract

The present invention teaches a simple method for reclaiming principally the N and S values in by-product, fine, crystalline ammonium sulfate in a granular form eminently suitable for the preparation of direct application fertilizers and/or the incorporation into bulk-blending operations for the preparation thereof.
In the instant invention, normally from about seventy (70) percent to about eighty (80) percent of the ammonium sulfate product produced therefrom, is derived from feedstock comprising said by-product, fine, crystalline ammonium sulfate. Furthermore, in one embodiment for the practice of the instant invention, from about eighty (80) percent to about eighty-eight (88) percent of said fine, crystalline ammonium sulfate feedstock is directly incorporated thereinto with the remainder thereof being indirectly introduced thereinto by means of applicants' prepared special "binder." In another embodiment for the practice of the instant invention wherein same is effected juxtaposed an ammonium sulfate crystallizer unit the aqueous saturated ammonium sulfate mother liquor removed therefrom, with and/or without slurry fines therein may be admixed with water and sulfuric acid to prepare the binder solution for subsequent introduction into the inclined rotating drum. In this embodiment for the practice of the instant invention, all of the fine, crystalline ammonium sulfate feedstock may be directly incorporated into the upper end of said inclined rotating drum, i.e., by acidifying the mother liquor from the crystallizer it is not necessary to employ desolution of a sidestream of the by-product fines from the stockpile thereof.
US06/654,278 1984-09-25 1984-09-25 Granulation of crystalline by-product ammonium sulfate Pending UST105501I4 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06/654,278 UST105501I4 (en) 1984-09-25 1984-09-25 Granulation of crystalline by-product ammonium sulfate
US06/769,058 US4589904A (en) 1984-09-25 1985-08-26 Granulation of crystalline by-product ammonium sulfate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/654,278 UST105501I4 (en) 1984-09-25 1984-09-25 Granulation of crystalline by-product ammonium sulfate

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US06/769,058 Continuation-In-Part US4589904A (en) 1984-09-25 1985-08-26 Granulation of crystalline by-product ammonium sulfate

Publications (1)

Publication Number Publication Date
UST105501I4 true UST105501I4 (en) 1985-06-04

Family

ID=24624192

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/654,278 Pending UST105501I4 (en) 1984-09-25 1984-09-25 Granulation of crystalline by-product ammonium sulfate

Country Status (1)

Country Link
US (1) UST105501I4 (en)

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