NO123997B - - Google Patents

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Publication number
NO123997B
NO123997B NO160946A NO16094665A NO123997B NO 123997 B NO123997 B NO 123997B NO 160946 A NO160946 A NO 160946A NO 16094665 A NO16094665 A NO 16094665A NO 123997 B NO123997 B NO 123997B
Authority
NO
Norway
Prior art keywords
mixture
approx
marl
lime
starch
Prior art date
Application number
NO160946A
Other languages
Norwegian (no)
Inventor
R S Gow
J H L Mcauslan
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of NO123997B publication Critical patent/NO123997B/no

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/006Coating of the granules without description of the process or the device by which the granules are obtained
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033Shaping the mixture
    • C06B21/0066Shaping the mixture by granulation, e.g. flaking
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00Compositions containing a nitrated organic compound
    • C06B25/32Compositions containing a nitrated organic compound the compound being nitrated pentaerythritol
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06CDETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C5/00Fuses, e.g. fuse cords
    • C06C5/04Detonating fuses
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C203/00Esters of nitric or nitrous acid
    • C07C203/02Esters of nitric acid
    • C07C203/04Esters of nitric acid having nitrate groups bound to acyclic carbon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Multicomponent Fibers (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

Fremgangsmåte til brikettering av malmer. Procedure for briquetting ores.

Det nye ved oppfinnelsen består deri] at det til de findelte malmer tilsettes et bindemiddel som består av en findelt leire-kalkblanding, fortrinnsvis mergel og en oppløsning av sulfater som magnesiumsulfat, jernsulfat i vann, stivelse og en opp-løsning av hydroksyder som kaliumhy dr ok-syd, natriumhydroksyd i vann. Etter at disse bestanddeler er blitt intimt blandet med den findelte leire-kalkblanding, blir blandingen knadd og presset til briketter. The novelty of the invention is that a binder is added to the finely divided ores, which consists of a finely divided clay-lime mixture, preferably marl and a solution of sulphates such as magnesium sulphate, iron sulphate in water, starch and a solution of hydroxides such as potassium hydroxide ok-syd, sodium hydroxide in water. After these ingredients have been intimately mixed with the finely divided clay-lime mixture, the mixture is kneaded and pressed into briquettes.

I henhold til en foretrukken utførel-sesform av oppfinnelsen går man frem på følgende måte: Mergelen findeles til en partikkelstør-relse på under 5 mm. Det anvendes mergel som har et innhold av CaCOs på ca. 50— 90%. Magnesiumsulfat (MgSCk) løses opp i varmt vann av ca. 50—100° C, i en mengde av 5g MgS04 til 1 liter vann. Av denne MgSOi-oppløsning tilsettes 1 %, altså ca. 10 ml, til hver kg mergel under blanding. Fuktighetsinnholdet av mergelen med tilsetning skal ikke være høyere enn ca. 10 %. According to a preferred embodiment of the invention, the process is as follows: The marl is crushed to a particle size of less than 5 mm. Marl is used which has a CaCO content of approx. 50— 90%. Magnesium sulfate (MgSCk) is dissolved in warm water by approx. 50—100° C, in a quantity of 5g MgS04 to 1 liter of water. 1% of this MgSOi solution is added, i.e. approx. 10 ml, for each kg of marl during mixing. The moisture content of the marl with addition must not be higher than approx. 10%.

Ennvidere blir kaliumhydroksyd (KOH) Furthermore, potassium hydroxide (KOH) becomes

løst opp i varmt vann, nemlig ca. 10 g KOH pr. liter vann. Denne KOH-oppløsning settes til en stivelse som sagostivelse, potet-stivelse, maisstivelse osv., og dette i en mengde av ca. 10 g pr. kg stivelse. Denne blanding settes til den med MgSCU behand-lede mergel, og dette i en mengde av ca. 50 g pr. kg mergel. dissolved in hot water, namely approx. 10 g KOH per liters of water. This KOH solution is added to a starch such as sago starch, potato starch, corn starch, etc., and this in an amount of approx. 10 g per kg of starch. This mixture is added to the MgSCU-treated marl, and this in an amount of approx. 50 g per kg of marl.

Denne blanding opphetes til ca. 50° C. This mixture is heated to approx. 50° C.

Ca. 4—6 % av blandingen beregnet på ■nalmvekten settes til malmen og blandes ■ntimt med denne. Deretter blir malmen med tilsetning behandlet i et knaverk og presset i en briketteringspresse ved ca. 75° C eller høyere. About. 4-6% of the mixture calculated on the ■alm weight is added to the ore and mixed closely with it. The ore with addition is then processed in a knave mill and pressed in a briquetting press at approx. 75° C or higher.

Ved hjelp av det nye bindemiddel opp-nås det en bedre binding av briketten enn med de kjente bindemidler, og pressene blir ikke tilsmurt. Dessuten får brikettene en glatt overflate. With the help of the new binder, a better binding of the briquette is achieved than with the known binders, and the presses are not smeared. The briquettes also have a smooth surface.

Ved tilsetningen av kaliumhydroksyd til stivelse blir stivelsens bindekraft ytterligere forhøyet. By adding potassium hydroxide to starch, the starch's binding power is further increased.

Ennvidere kan det til massen som skal briketteres ytterligere settes ca. 0,2 % eller Furthermore, to the mass to be briquetted, approx. 0.2% or

noe mer eller mindre parafin som hydro-fobt middel. something more or less paraffin as a hydrophobic agent.

På grunn av det høye kalkinnhold i det nye bindemiddel blir den ved forhyttings-prosessen erholdte slagg meget høyverdig til fremstillingen av gjødningsmidler. Due to the high lime content in the new binding agent, the slag obtained in the recoating process is very valuable for the production of fertilisers.

Hvis det i stedet for mergel anvendes en annen leire-kalkblanding, blir den findelte leire og den findelte kullsure kalk blandet intimt med hinannen, og frem-gangsmåten utføres forøvrig på den samme If a different clay-lime mixture is used instead of marl, the finely divided clay and the finely divided carbonated lime are intimately mixed with each other, and the procedure is otherwise carried out in the same way

måte som beskrevet foran. I leirekalkblan-dingen utgjør bindemidlets innhold av kalk ca. 20—60 vektsprosent og av leire ca. 80— 40 vektsprosent. De andre bestanddeler av way as described above. In the clay-lime mixture, the binder's content of lime amounts to approx. 20-60 percent by weight and of clay approx. 80— 40 percent by weight. The other constituents of

blandingen anvendes i passende mengde-forhold. Det kan naturligvis anvendes for-skjellige leire-kalkblandinger. Andre leire-kalkblandinger kan også komme til an-vendelse ved siden av mergel. the mixture is used in appropriate proportions. Naturally, different clay-lime mixtures can be used. Other clay-lime mixtures can also be used alongside marl.

Det er ovenfor beskrevet foretrukne utførelsesarter av oppfinnelsen, men andre utførelser er mulig innenfor rammen av oppfinnelsen. Preferred embodiments of the invention have been described above, but other embodiments are possible within the scope of the invention.

Claims (1)

Fremgangsmåte til brikettering av malmer, karakterisert ved at det til de findelte malmer settes et bindemiddel som består av en blanding av en findelt leire-kalkblanding, fortrinnsvis mergel og en oppløsning av sulfater som magnesiumsulProcess for briquetting ores, characterized in that a binder is added to the finely divided ores consisting of a mixture of a finely divided clay-lime mixture, preferably marl, and a solution of sulphates such as magnesium sulphur. fat, jernsulfat i vann, stivelse og en opp-løsning av hydroksyder som kaliumhydroksyd, natriumhydroksyd i vann, hvoretter blandingen knas og presses.barrel, iron sulphate in water, starch and a solution of hydroxides such as potassium hydroxide, sodium hydroxide in water, after which the mixture is crushed and pressed.
NO160946A 1964-12-30 1965-12-16 NO123997B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52844/64A GB1070660A (en) 1964-12-30 1964-12-30 Manufacture of granular pentaerythritol tetranitrate

Publications (1)

Publication Number Publication Date
NO123997B true NO123997B (en) 1972-02-14

Family

ID=10465554

Family Applications (1)

Application Number Title Priority Date Filing Date
NO160946A NO123997B (en) 1964-12-30 1965-12-16

Country Status (8)

Country Link
US (1) US3384688A (en)
JP (1) JPS5145649B1 (en)
AT (2) AT273767B (en)
CH (1) CH478729A (en)
DE (1) DE1446962C3 (en)
FR (1) FR1462118A (en)
GB (1) GB1070660A (en)
NO (1) NO123997B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE637659A (en) * 1962-09-07
US3879504A (en) * 1972-05-02 1975-04-22 Us Navy Method for injection molding of explosive and pyrotechnic material
GB1425084A (en) * 1973-07-04 1976-02-18 Ici Ltd Water-resistand fuse-cord
US3949673A (en) * 1974-04-16 1976-04-13 E. I. Dupont De Nemours And Company Semi-rigid sinuous blasting charge and borehole loading method
US4232606A (en) * 1977-10-17 1980-11-11 E. I. Du Pont De Nemours And Company Explosive connecting cord
NZ187824A (en) * 1977-08-01 1980-08-26 Ici Australia Ltd Fusecord wherein outer thermoplastic sheath enclosed by flexible strands adhered to sheath by adhesive from a water-bearing adhesive composition
DE3027361C1 (en) * 1980-07-18 1984-05-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Explosives, in particular for shaped charges
SE8600119L (en) * 1986-01-10 1987-07-11 Exploweld Ab SPRENGEMNESMATERIAL

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147162A (en) * 1955-10-21 1964-09-01 Jr James T Paul Organic explosive compositions suitable for weapon casings
US2993236A (en) * 1956-09-07 1961-07-25 Ici Ltd Method of producing cord-like product
US3009386A (en) * 1956-10-22 1961-11-21 Hispano Suiza Sa Methods of preparing compressed explosive charges
US2867647A (en) * 1957-02-04 1959-01-06 Ici Ltd Pentaerythritol tetranitrate
US3102833A (en) * 1961-03-07 1963-09-03 Du Pont Process for producing a fibrous explosive having variable density

Also Published As

Publication number Publication date
GB1070660A (en) 1967-06-01
DE1446962C3 (en) 1978-11-02
DE1446962A1 (en) 1968-12-05
DE1446962B2 (en) 1978-03-09
US3384688A (en) 1968-05-21
CH478729A (en) 1969-09-30
AT272171B (en) 1969-06-25
JPS5145649B1 (en) 1976-12-04
FR1462118A (en) 1966-12-09
AT273767B (en) 1969-08-25

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