GB1201171A - Improvements in or relating to the production of fine powders - Google Patents

Improvements in or relating to the production of fine powders

Info

Publication number
GB1201171A
GB1201171A GB1416367A GB1416367A GB1201171A GB 1201171 A GB1201171 A GB 1201171A GB 1416367 A GB1416367 A GB 1416367A GB 1416367 A GB1416367 A GB 1416367A GB 1201171 A GB1201171 A GB 1201171A
Authority
GB
United Kingdom
Prior art keywords
fine particles
substance
solvent
march
pumping
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
GB1416367A
Inventor
John Nicholson
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB1416367A priority Critical patent/GB1201171A/en
Publication of GB1201171A publication Critical patent/GB1201171A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • 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
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,201,171. Conversion of explosives or other material into fine particles. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 20 March, 1968 28 [March, 1967], No. 14163/67. Heading B1X..[Also in Division C2] A normally crystalline substance such as pentaerythritol tetranitrate is converted into fine particles by pumping a solution of the substance, in a solvent such as acetone, through tube 4 and nozzle 35 into a shallow cylindrical vessel 1 wherein the solution forms a suspension in a helical flow of gas, e.g. compressed air, supplied through pipe 5, annulus 32 and orifices 33, and pumping into the suspension, through tube 13 and nozzle 43, a liquid such as demineralised water, which is a non-solvent for the substance but is miscible with the solvent, whereby a turbulent dispersion is formed from which the required fine particles of substance are precipitated. A large proportion of the turbulent dispersion circulates down through cyclone 2, and a separate stream is carried by gas, through the opening at the top of vessel 1, to an external cyclone. A slurry of fine particles in mixed liquid is withdrawn from both cyclones, and is filtered. The wet particles may be dried on trays in a vacuum cabinet. Tubes 4 and 13 may be made of polyethylene. Fine particles of the following explosive substances may be produced:- nitromannite, cyclotrimethylene trinitramine, cyclotetramethylene tetranitramine, tetryl, ethylenedinitramine, and trinitrotoluene.
GB1416367A 1967-03-28 1967-03-28 Improvements in or relating to the production of fine powders Expired GB1201171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1416367A GB1201171A (en) 1967-03-28 1967-03-28 Improvements in or relating to the production of fine powders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1416367A GB1201171A (en) 1967-03-28 1967-03-28 Improvements in or relating to the production of fine powders

Publications (1)

Publication Number Publication Date
GB1201171A true GB1201171A (en) 1970-08-05

Family

ID=10036147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1416367A Expired GB1201171A (en) 1967-03-28 1967-03-28 Improvements in or relating to the production of fine powders

Country Status (1)

Country Link
GB (1) GB1201171A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340188A2 (en) * 1988-04-29 1989-11-02 Nobel Kemi AB A method for the production of fine-grained explosive substances
WO2007016435A2 (en) * 2005-07-28 2007-02-08 Isp Investments Inc. Method to improve characteristics of spray dried powders and granulated materials, and the products thereby produced
RU2467990C1 (en) * 2011-08-10 2012-11-27 Федеральное Казенное Предприятие "Бийский Олеумный Завод" Method of producing finely dispersed octogene
US8613946B2 (en) 2006-12-21 2013-12-24 Isp Investment Inc. Carotenoids of enhanced bioavailability
US10189957B2 (en) 2007-01-26 2019-01-29 Isp Investments Llc Formulation process method to produce spray dried products

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340188A2 (en) * 1988-04-29 1989-11-02 Nobel Kemi AB A method for the production of fine-grained explosive substances
EP0340188A3 (en) * 1988-04-29 1991-01-09 Nobel Kemi AB A method for the production of fine-grained explosive substances
WO2007016435A2 (en) * 2005-07-28 2007-02-08 Isp Investments Inc. Method to improve characteristics of spray dried powders and granulated materials, and the products thereby produced
WO2007016435A3 (en) * 2005-07-28 2008-02-14 Isp Investments Inc Method to improve characteristics of spray dried powders and granulated materials, and the products thereby produced
JP2009502487A (en) * 2005-07-28 2009-01-29 アイエスピー インヴェストメンツ インコーポレイテッド Process for improving the properties of spray-dried powders and granulated materials and products produced thereby
CN101272848B (en) * 2005-07-28 2013-03-13 Isp投资有限公司 Method to improve characteristics of spray dried powders and granulated materials, and the products thereby produced
US10532028B2 (en) 2005-07-28 2020-01-14 Isp Investments Llc Method to improve characteristics of spray dried powders and granulated materials, and the products thereby produced
US8613946B2 (en) 2006-12-21 2013-12-24 Isp Investment Inc. Carotenoids of enhanced bioavailability
US10189957B2 (en) 2007-01-26 2019-01-29 Isp Investments Llc Formulation process method to produce spray dried products
RU2467990C1 (en) * 2011-08-10 2012-11-27 Федеральное Казенное Предприятие "Бийский Олеумный Завод" Method of producing finely dispersed octogene

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees