CA2017886A1 - Procedure for dust control in granulated materials - Google Patents
Procedure for dust control in granulated materialsInfo
- Publication number
- CA2017886A1 CA2017886A1 CA002017886A CA2017886A CA2017886A1 CA 2017886 A1 CA2017886 A1 CA 2017886A1 CA 002017886 A CA002017886 A CA 002017886A CA 2017886 A CA2017886 A CA 2017886A CA 2017886 A1 CA2017886 A1 CA 2017886A1
- Authority
- CA
- Canada
- Prior art keywords
- signified
- fact
- procedure according
- solution
- mixture
- 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.)
- Abandoned
Links
- 239000000428 dust Substances 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 title claims abstract 4
- 238000000034 method Methods 0.000 title claims description 11
- 235000013379 molasses Nutrition 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 241001397173 Kali <angiosperm> Species 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 claims 3
- 239000012266 salt solution Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000008188 pellet Substances 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 241000357437 Mola Species 0.000 description 3
- 241001441728 Molidae Species 0.000 description 3
- 101100409194 Rattus norvegicus Ppargc1b gene Proteins 0.000 description 2
- 101100182914 Caenorhabditis elegans mak-1 gene Proteins 0.000 description 1
- 241000905957 Channa melasoma Species 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 241000984642 Cura Species 0.000 description 1
- 101100490488 Mus musculus Add3 gene Proteins 0.000 description 1
- 241001553014 Myrsine salicina Species 0.000 description 1
- 241000669618 Nothes Species 0.000 description 1
- 241001163743 Perlodes Species 0.000 description 1
- 241001296096 Probles Species 0.000 description 1
- 208000000485 Ranula Diseases 0.000 description 1
- 101100313003 Rattus norvegicus Tanc1 gene Proteins 0.000 description 1
- 241000022563 Rema Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- IIBYAHWJQTYFKB-UHFFFAOYSA-N bezafibrate Chemical compound C1=CC(OC(C)(C)C(O)=O)=CC=C1CCNC(=O)C1=CC=C(Cl)C=C1 IIBYAHWJQTYFKB-UHFFFAOYSA-N 0.000 description 1
- RRDGKBOYQLLJSW-UHFFFAOYSA-N bis(2-ethylhexyl) 7-oxabicyclo[4.1.0]heptane-3,4-dicarboxylate Chemical compound C1C(C(=O)OCC(CC)CCCC)C(C(=O)OCC(CC)CCCC)CC2OC21 RRDGKBOYQLLJSW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- MCWXGJITAZMZEV-UHFFFAOYSA-N dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- ATADHKWKHYVBTJ-UHFFFAOYSA-N hydron;4-[1-hydroxy-2-(methylamino)ethyl]benzene-1,2-diol;chloride Chemical compound Cl.CNCC(O)C1=CC=C(O)C(O)=C1 ATADHKWKHYVBTJ-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 210000001550 testis Anatomy 0.000 description 1
Classifications
-
- 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
- B01J2/30—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/26—Preventing the absorption of moisture or caking of the crystals
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/005—Fertilisers containing potassium post-treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/20—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for preventing the fertilisers being reduced to powder; Anti-dusting additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
ABSTRACT
To control and bind dust in granulated materials a solution of molasses and a concentrated earth-alkaline-chloride solution is sprayed on.
To control and bind dust in granulated materials a solution of molasses and a concentrated earth-alkaline-chloride solution is sprayed on.
Description
~7~38~
The lnv~ntlon addro~s~ ~ procedur~ ~o: e ~he preventlon of th~
form~tlon of du~t ~u~ng. ~h~ lo~ing ~1 ~ ran~portatlon of granular materlals or p~l:Let~ p~cl~ ~l,y granular fertlllz~r~.
F~rtlllzer~ ar~ m~nufac'c~ur~d~ on ~ ~ve~ t ln~a~lng ~c~le~ ln granular ~or~ and ar~ 'cran~portsd ln 1~ ~o~ bulk l~dq, ~ry-pre~ grar~ula~lon ls th~ mo3t common p~ ,o~e~s u~ed to manuacture thes~ qrartulates. Th~ pro~e~ ~orc~s~ l ;h~ ~ontained ~ to ~orr~
a hard shell around the materl~l ~o bo g~nul~ed. A prefe~red granular slze o~ 1.0 to ~.0 ~ then ol~taln~d through cru~hlng and ~iftlnq~
The ~act that g~anulatlon aldlng mater~ ~ are a~de~ to th~
lngredlent r~ater~als mlxtu~ ~n the pr~ Idl3~tlon o~ ~all kernel qxanulat~s ~8 well kno~n~ ~he DE-~S 2~ , ~1 585 d~s~r~bes the addltion of org~nl~ or lno~qanlc b~ndl~ ~g a~ent~, suctl a~
mola~se~, starch, calclum chlo~id~a a~ ~ell a~ alkaline and aart~ lk~311ne-3ulph~ta ~nd nltrat~, In the compac~lng of ~hom~s-phospha~e ln th~ ~m~un~ of 2 tc 3 per~ent. ~n addl~lorl, ~ertaln t~mperature range~ ~nd treal~ ~ .times durlng. the comp~tlng p~ocess and d~prln~ the follc ~-u~ trea~ments are re~ulated ~
The ~E-PS 36 18 058 d~ rlbes a ~rocedu ~o ~or th~ granulatlon of wa~er soluble fsrtlllzer~ wl~h hlgh Kle ~e~te ~ont~nt~ nlfled Ly the f~ct, th~t ~olubl~ an~fo~ ea~lly colloSd ~olu~le 9ubatancers from the cl~s o~ ~ono~ dl o ~ ~oly-~accharid~ and~or the derlved slngle hydro~hlle a~ da~ . to th~ materla~ to be granulated ln ~olld or ~lutlon for~. !rhie ~rnount~ ad~ed rang~
from 0.1 to 5 perc~nt. ~n ~ddltlon, 5~ ccharo~ n 3011d c:r ~a~
~ugar rlch molas~e~ may lil~ u~od.
The DE-~Y 11 '77 177 de~c~ibo~ the a~dlt lon of rn~gno~ium sul~h~ta and magnes~u~ ~:hlorl~e ~ulutlon~ ~18 gra nul~tlon aldlng ~u~ anc~ the l)~ 08 33'04 303 ~e crlb ~ the utll~atlor~ o~
magno~ chl~rlde ~olut~on a~ a bln~ln g ~gent ln the productlon of pell~s made ~rom cruiihed ~teel ~urn !~ce and ate~l prodl~ctlon s ludge .
~hc ~ran~ es produced ~y t~le common m~nu~acturlng p~oce~se~
especial~y aa a re~ul~ o:~ cru~shln~, havf~ Rharp edg~ and ~orner3 which ar~ gxoun~ of ~ ~u~ing ~he load~ng ~nd tran~por~lnq of th~
granulclt~. Thls resu~s ~n the cre~tio n o~ dU~t, whl~h i~
~nde~lIdbl~ ~u~lrlg the tran~port and en ~ appllcation o~ the gr~r~ulat~s and lead~ to ~na~ept~ble en ~ironmental con~equence~.
~t ~ known, that ~he p~v~ntion of the! al~ove ~entlon~
phe~omenon i~ be~nq ~tt~rnpted th~ough t ~e l~tlng o~E~ of ~xt~emely ~1n~ Xernel~ 1~! g~anulateO I 1 pr~ctlce howe~,relr~ thi~
treatlQent ~B not 8U~ lelnt to remov~ ~ ~r~ace ~u~t ~ r~1cle~ o~
to impro~e the resl~tiln~ to du~t ~orm~ tlon of the edg~3~ {~orners dnd ~ur facc~ o~ ~he g~anula~s~ .
A proc~dure to ln~prov~ th~ ~ur~a~e ~Rarlresl~tance of Kali 88~
The lnv~ntlon addro~s~ ~ procedur~ ~o: e ~he preventlon of th~
form~tlon of du~t ~u~ng. ~h~ lo~ing ~1 ~ ran~portatlon of granular materlals or p~l:Let~ p~cl~ ~l,y granular fertlllz~r~.
F~rtlllzer~ ar~ m~nufac'c~ur~d~ on ~ ~ve~ t ln~a~lng ~c~le~ ln granular ~or~ and ar~ 'cran~portsd ln 1~ ~o~ bulk l~dq, ~ry-pre~ grar~ula~lon ls th~ mo3t common p~ ,o~e~s u~ed to manuacture thes~ qrartulates. Th~ pro~e~ ~orc~s~ l ;h~ ~ontained ~ to ~orr~
a hard shell around the materl~l ~o bo g~nul~ed. A prefe~red granular slze o~ 1.0 to ~.0 ~ then ol~taln~d through cru~hlng and ~iftlnq~
The ~act that g~anulatlon aldlng mater~ ~ are a~de~ to th~
lngredlent r~ater~als mlxtu~ ~n the pr~ Idl3~tlon o~ ~all kernel qxanulat~s ~8 well kno~n~ ~he DE-~S 2~ , ~1 585 d~s~r~bes the addltion of org~nl~ or lno~qanlc b~ndl~ ~g a~ent~, suctl a~
mola~se~, starch, calclum chlo~id~a a~ ~ell a~ alkaline and aart~ lk~311ne-3ulph~ta ~nd nltrat~, In the compac~lng of ~hom~s-phospha~e ln th~ ~m~un~ of 2 tc 3 per~ent. ~n addl~lorl, ~ertaln t~mperature range~ ~nd treal~ ~ .times durlng. the comp~tlng p~ocess and d~prln~ the follc ~-u~ trea~ments are re~ulated ~
The ~E-PS 36 18 058 d~ rlbes a ~rocedu ~o ~or th~ granulatlon of wa~er soluble fsrtlllzer~ wl~h hlgh Kle ~e~te ~ont~nt~ nlfled Ly the f~ct, th~t ~olubl~ an~fo~ ea~lly colloSd ~olu~le 9ubatancers from the cl~s o~ ~ono~ dl o ~ ~oly-~accharid~ and~or the derlved slngle hydro~hlle a~ da~ . to th~ materla~ to be granulated ln ~olld or ~lutlon for~. !rhie ~rnount~ ad~ed rang~
from 0.1 to 5 perc~nt. ~n ~ddltlon, 5~ ccharo~ n 3011d c:r ~a~
~ugar rlch molas~e~ may lil~ u~od.
The DE-~Y 11 '77 177 de~c~ibo~ the a~dlt lon of rn~gno~ium sul~h~ta and magnes~u~ ~:hlorl~e ~ulutlon~ ~18 gra nul~tlon aldlng ~u~ anc~ the l)~ 08 33'04 303 ~e crlb ~ the utll~atlor~ o~
magno~ chl~rlde ~olut~on a~ a bln~ln g ~gent ln the productlon of pell~s made ~rom cruiihed ~teel ~urn !~ce and ate~l prodl~ctlon s ludge .
~hc ~ran~ es produced ~y t~le common m~nu~acturlng p~oce~se~
especial~y aa a re~ul~ o:~ cru~shln~, havf~ Rharp edg~ and ~orner3 which ar~ gxoun~ of ~ ~u~ing ~he load~ng ~nd tran~por~lnq of th~
granulclt~. Thls resu~s ~n the cre~tio n o~ dU~t, whl~h i~
~nde~lIdbl~ ~u~lrlg the tran~port and en ~ appllcation o~ the gr~r~ulat~s and lead~ to ~na~ept~ble en ~ironmental con~equence~.
~t ~ known, that ~he p~v~ntion of the! al~ove ~entlon~
phe~omenon i~ be~nq ~tt~rnpted th~ough t ~e l~tlng o~E~ of ~xt~emely ~1n~ Xernel~ 1~! g~anulateO I 1 pr~ctlce howe~,relr~ thi~
treatlQent ~B not 8U~ lelnt to remov~ ~ ~r~ace ~u~t ~ r~1cle~ o~
to impro~e the resl~tiln~ to du~t ~orm~ tlon of the edg~3~ {~orners dnd ~ur facc~ o~ ~he g~anula~s~ .
A proc~dure to ln~prov~ th~ ~ur~a~e ~Rarlresl~tance of Kali 88~
fertll~zer ~nulate~ knovn ~om DD P~ 136 956. ~ter the ~ranulatlon proce~, th~ K~ rtlllz rs granulat~3 ~re ~lven a follow-uE) ~re~t~ent ;:onsl~tln~ of du~t ~emoval ln ~n al~
.lgltator~ followed ~y the appllcatlon ~ ~ sur~ace tre~tment ~lth water or water based ~dd'ltlve~ ~nd 'che drylng ~nd coollng of th~
~hus tr~ated granulate~. The b~ fo $he pr~cedur~ ls th~2 ~act th~t the re~Ralnln~ un~tabl~ edga~ or c rner~ ~f the ~nulat~
su~ace can ~e 9trang~hehed through ab oPbtlon or r~cry~tallzation an~ th~t th~ overall sllrfa~ ~trength o~ th~
granulate can be l~p~oved.
The ~E-OS 30 03 BB3 8upp~e~nt~ the fl~ Idlngs of the p3~evlously di~cu3~ed p~'cent appll~atl~n through ~ le ~b~ervatlon that an optlmal ~urface ~trength qain can be ~ ~ined, ~o~dln~ to OS, at a temperature range ~ro~ ~ to lOO ~ legre~ ~elsius, in ~o~binatlon with ~ minl!num treat~ent ~ ~o o~ lO ce~ond~, in an atmosphere wlth high ~Qis'cure ~ont~nt.
The tre~l:ment procedure ~e~crlbed 2Ibov r~aulre~ exten~ve exp~ndlture ln ad~ltlon to tho granul~ lon and si$tlng eguSp~ent and i8 only appllcab1e a~ th~ granul~t ~r~du~or~ locatlonO sln~e the he~t requlr~d by ~he pro~es~ 18 2~ yproduc:t~ o~ granulat~
produc~on. ~h~ pro~edu~e Is not ap~1 c~ble, ~ven ~,rhen disr~gar~ing th~ regulre~l inve~t~ent at d malnten~n~e co~ts, fvr ~ranulated Kall ~ro~uctY~j ~?hlch are ~tc red fo~: prc~longed perlod3 of tlme ln piles at mlddlemen and ar~ t ~en r~load~d. It ls kno~n that prolonged ~torage ~rlo~ and the a~3oclat~ physical e~fects, such ~8 sto~ge pre~ur~ and c hans~6 ln the ~ol~tu~e ~ontent o the a~blent ~s~mo ph~e, ne~ ~ivoly a~f~ct gr~nul~to~
treated ln the abovo ~en~ioned ~rocedur e.
5~he ch~llenge underlyln9 thl~ invontlon V~ to develoEI a ~tcl~ed~re for the pre~n~l~n o~ du~ ~o rm~tion durlng the loa~lng an~ tran~port~tl~n of yr~nul~te~ ~r pel l~s, o~peclally ~ertlllzer granulates, whlch llrould optl m21lly n~e~t 'che requlrem~nts of belng ~nu1ron~en'c~1ly ~ rl~n~ly, allo~ing for long storage ~e~ ~od~ of the trea'ce~ gr~nulat e~, and belng e~y to apply .
Thl~ accompll~had by t:hi 1nvent10n through the addi~10n o:~ a 11~au1d mlxture Iqust ~n~c~ol/b~nd1ng ~1 ~ture~ o~ org~nic or 1r~u~anlc ~l~bstanco~ In ~t~r ~olution to the granulat~s~ ~here t~le ~ubstance aro ~ully ~olubl~ ln on~ ~nothe~ ~nd llh~re the organlc ~ubstancP for~s ~h2. ~u~t bln~ln 3 agent ~nd ~he ~nor~an~c ~u~sta~e control~ th~ mai~tu~e ~ontent o~ the o~ the m1xture .
The ap~licablo du~t csnti~l~b1nd~ng sllIx ture mu~t st1ck t~ the granul~t~ surfa~ dtt~3 ~ust not 41~ol~r~ o~ d11uto through the ab~orbt10n o~ mol tur~ fr.om th~ atmo~ph ~r~. In ~ddit~on~F th~
m~xture ~ust not glv~ up ~ol~tur~ to th ~ po1nt o~ lov~ ng it~
~sticky~ property dur1n~ :the ~Iry1ng ~ro ~e~lur~. In ~eneral sub3tan~es are utlli~çd th~ exh1blt re Latlvely high vl~osity a~
room tem~ atur~ and pO~S~3 wal:er r~pel Io~t pro~ert1es. ~hese vi~cou~ ~ul~tance~ ~h~uld, also ~xhib1t ~ ~gh ~ h polnt, s1n~:e i .
Z~3~3L7~ 3 to achl~vQ optl~un~ co~re~ag~ a ~r~y-on¦ te~erature o ~round ~û
ce l 51 u3 1~ requ l r~d .
The long E3tor~g~ p~rlQd2~ o~ th~ treate~ ~ ~ranulate 1~ due to the lor3gevlty o th~ ~u~t blln~ing ef~ec:t o E ~he lnvorlted du3t con tr ~ ~b l nd i ng ml xtU~e . i Molas~s, whlch ~ ~ the s~cond ~ta~e ~ ~ ~ugar in bcet ~u~ar p;odu~t ion, 1~ e~pec~ sultabl~ to a~la the organlc substance, slnce lt exhlblt~ ~h~ ab'Dv~ me~nt~on~d ~ualltle~. Fo~ th~
lnorqanlc :~ub~tan~s Ca~ nd M~C12 ar~ F ~3pocl~11y ~ultablo;
Ob~ec~ of thls invehtlon 1 a ho~ ~g~n~ouu mlxtu~e o~
molass~ ~lth ~7 pe~cent ~suSIax co~ itont ~nd a solut~on CaC12 w~th conc~ntràtls~n of 30-~0 p~rc~nt CaC12 or a solution o~ MgC12 ~Ith 23-33 perc~ !n~ MyC12, ~hl~h Dptl~nally me~ts th~ chall~nge~ faco~ b,y d d~ !at ~ontrol/~indlng pr oduct .
~he manu~ tur ing of the hQmogeneoua ~ x~uLe can take place at roon~ temperature in ~n a~lt~'co~ o~ulpp el contalne~.
The ~nlxln~ o~ commerclally av~lla~ la~ with a pH ~igurQ o~
a . 2 to 8 . 7 ~ith a CaCl~ ~olutlon, wh~c ~l~o ha~ a p~ f lgur~ of ~pproxl~at~ly ~.0, cau~e~ 3 choalcal re ~ctlon~ vtllch 15 Rignifled throu~h the redu~t~ on of . ttie pJI f l~ure to 6 . ~ ~or th~ tYo comE~onent mixture. 1~ c~nnot be ~ CO~ nt~d that 'ch~ rea~:tlon is r~s~ns 1ble ~or the fact thAt tl-~ mola~ ~e~ ~rt o~ th~ ~lxtur~
rema~n~ ~table. Thl~ ~a~lllta~o~ the ~lHtlv~ly long ~torage perlod~ that c~n be aktafn~t3 u~lng th~ d~t control/bindlng mlxture, o~mpar~d to the'b~haviour o~ ~ l~re rnol~e~ under t~e sam~ con~tion~. In ~d~lon, tho mlxl q reduce3 tho vl~o~slty thu:s a1lowlng ~rob-em çrY~ ~umplns~ an~ ~aylng o~ the du~t contro1~b~ndIng ~ixture, ~Irlthout heatln , e~ren in 10w~r tom~ernt~Jrt:~ range~.
Tho applic~tlon onto the through ~l~tln ~lne du~t ~r~e granul~t~
can, dependlng on pr~per .pre~ug~ ane n DZ~cle ~electlon/ take pldce at roo3n te~s?craturq. In C0~ 18 ~n to other purely org~nlc dust ~inding ~ub~tanc~ preh~atlng 1~ n Dt necessarlly rqqulre~.
~he ~l~n-3llng o~ tho mlxtur~ ~9o~ not ~r ~s~nt any health or hyglene proble~o f or empl~oyoe~ ontc~ -t wlth lt .
~t wa:~ o~serve~l~ that the a~ldltlon o~ 0 .1$ and 1.0 ~ei~ht pert~ t, bas~d on the gr~n~lat~ to be S Fe~te~,. pxoved to he partlcularly ~ffe~tlve. In the c~e o~ It~ll fertllizbrs the amount o~ du~t controlfbi.'n~lng E~iXtUre rahge~ ~r~la 3 . 2 to O . 4 welght percent, ba~e~ on .the gx~nulate o be t~eate~ u~ed and the optlln~l ef~ctlvene~s ~chlevq~ h ~ ~re3cribed tolei~ance r~nge for the ra~d m~te~ ~a,l content ~St20 i ~ not ex~eeded in th~
aL)~ Atlon on Kall ~rtlllzer Slranulat:l c~
The du~t control ~o he qchloYe~ d~t ~ Dlned ln ~h~ ~ollo~lng mann~r:
~ample~ of ~he g~ ulat~ to be ~o n~ltl~n are fr~d o alny ~tt~ch¢d partic~les 'ch~ugh ;~tln q. Th~n the du~t control ~'bindlng ~ix'cu2~e td b~ t2st~ la ~vonly ~str1bute~ dn~
~p~ay~d onto tho 2dOg ~ les. A Eter the appllcAt~n ~f th~
mlxt~re, 1 pe~cent, b,a~e~ on the ~o~bln~d grhnu~alr w~l~ht, du~t ~ cO . ~ m~ D~d to th~ ~a ~ e~ an~ tlse comb~ne~
~mple~; ~re ~lxe~ n a ~ot~tln~ t ~; 1a~ for f lv~ ml~lu~
Ths re~ultln~ sa~p~s arc teste~ l~f~e:r ~ to~gç peLlod o~
l, 7 and 20 d~y~, ~y ~l.t1~ th~ ~ntlre ~ontent~ o~ the flask on an Alplne al~9tr~a~ ~ach 1n~ with a ~.063 mm sle~e, Th~ t~n~ perl~d mu~t b~ exactl y three mlnute~.
Afterwa~ he ~us~ la~en sl~Ye 5 Ellter p~per~ 19 ~eig~ed or ln th~ ca~e of ~ol~bl~ ~u~t, ~u~h a6 alkallne-~hloride, f lu~h~d out and th~ a~oun~ ~eter~ ne~ throu~h tltration .
The du~t control~l,n~ng p~r~ta 3e~ a~e calculAte~ ba6e~ on th~ re~ultlng 1~u~.e~.
In the ~xam~l~a sho~n ln th~ follo~ln~ t~bl~ 4 Kg o ~u~t control~bln~in~ mlxtur~ ~ro u~ @r Lnoo ~g o~ kal1um-~ulphate granulatQ ~ -O. ~
T~le: ~u~t ~ontrol ~el~it~ to unt~ea~e~ ~ample~ p~cent La~erzo~t - ~toro~e pcrlod~ Loesung = ~olutl~n, Mela~s~ - mola~se~ Nullprohe = Vntre~ to~ 3am~ Tage = d~y~
The r~ulto, ln co~p~rl~on to th~ un~ated ~p~e ~ho~ th~t V~L~
good du~t control~b1n~l~9 ls possL~le ~h~n the ~ixture.b~t~n molasses and salt ~o~ut~;~n l~o~ l~ the 50~ : 50~ ran~e. ~tray1ng from t~ optl~u~ r~tlc to, ~o~ ~x3mple 60~ molasse~ and ~0~ ~alt solutlon or vlse ~ers~ ~oe~ not ~lynl~ Ic~ntly a~ect ~ho e~ectl~enes~ o{ th~ pro~uct~. thU~ mak 1~ ~xt~eme a~cura~y ~n the m~xlng p~oce~s unncce~aary.
Th~ Pollow1ng ap~llc~tl~n exa~pl~ d~r~be th~ lnYentlon wlthout llmltlnq lt ~ny way. .
EXAMPL~
A ~ranulat~ m~nu~a~turedl ~y ~r~ gran pl4tlon ~n~ ~lfte~ in a o~1oY-Up p~oce~ ls ~tqre~ uncondltio ~ in a ~arehou~e.
l~ependent o~ the 3t~r~e ~ nn~ th, ~ or~ ln~epen~n~ o~ t~
re~lnlng mate~ials t~p~r~ture, the ml 3terlal~ p~lor to~ loa~lngO
i~ ~re~ pour~d into ~ ~lev~ to r~ove ~lpe du~t par~lclos. The next p~:OCe!S5 treat~ the ~ranula~e ~lth ~tu~t controlfbln~lng mixture prior to it b~ln~ d~o~lted ~nl to the tr2nspo~t conta~ner b~ the convey~r belt. The ~r~e ~ourln~ a ~ranul~t~ l~ spray~d wlth the 6u-t Qontrol/blnd~ng mlxt3r~ u~ln~ y noezle- located so r#
that th~ 3~ray con~ nclt)~e the p~urin~ ~nul~l:e on all ~
Thi6 18 ~ollowed by ~ redl~ tln~ z~ r tc) thorou5~hly ~ix th0 tr~a~ted gr;!~nul~ta . Th~ ~pray ~r~ ur~ th ~t 1~ u~ed r~n~s3 ~ 3 to 6 bar. .
The medIan ~c~mperature ~i~ th~ du~t ~ontro ~ nd~ mlxtu~e l~
roo~n tempe~ature, A mlxtur~ 1~ S0~ m~la~ 58~ an~ 50~ w~ter b~fi~d C~!12 ~o1~tlon coné~1nlny 3~0-~0 ,pR~cent C~ ~C12 or 50~ Mg~12 solutlon contalnlng 23-33 ~rc~n~C Mg~12 1 ~loyed ln an ~moun~
o~ 0. 3 ~eight ~erc~nt~ l:a~eid ~n th~ ~r~nu ~e to b~ ~ondltlorled.
~ ..
granulate ~n~nu~ctu~e~ by~ pre~8 ~r~nula lon and ~ ted in a fol10w-up proc~s~ i~ 3e~t ~i r~s:tly to 'che l~adlng proce~.
F`ol10~1ng the requ~r~ t,~n~ to r8~0Y~ lnæ du~t paxt~c1~ h~
condltioning m~erla1 1~ a~plle~ n ex nt~le 1. H~attng of th~
condltloning ~ater~a~ 1~ not Iequlr~d in h~3 Ca30 ~ue ~o the tempe~ure u~ the ~us'c propuceJ ~r~nulat , i~ a ~pr~y pressu~e of ~t least S to ~ bi~ is a vatlabl~.
.lgltator~ followed ~y the appllcatlon ~ ~ sur~ace tre~tment ~lth water or water based ~dd'ltlve~ ~nd 'che drylng ~nd coollng of th~
~hus tr~ated granulate~. The b~ fo $he pr~cedur~ ls th~2 ~act th~t the re~Ralnln~ un~tabl~ edga~ or c rner~ ~f the ~nulat~
su~ace can ~e 9trang~hehed through ab oPbtlon or r~cry~tallzation an~ th~t th~ overall sllrfa~ ~trength o~ th~
granulate can be l~p~oved.
The ~E-OS 30 03 BB3 8upp~e~nt~ the fl~ Idlngs of the p3~evlously di~cu3~ed p~'cent appll~atl~n through ~ le ~b~ervatlon that an optlmal ~urface ~trength qain can be ~ ~ined, ~o~dln~ to OS, at a temperature range ~ro~ ~ to lOO ~ legre~ ~elsius, in ~o~binatlon with ~ minl!num treat~ent ~ ~o o~ lO ce~ond~, in an atmosphere wlth high ~Qis'cure ~ont~nt.
The tre~l:ment procedure ~e~crlbed 2Ibov r~aulre~ exten~ve exp~ndlture ln ad~ltlon to tho granul~ lon and si$tlng eguSp~ent and i8 only appllcab1e a~ th~ granul~t ~r~du~or~ locatlonO sln~e the he~t requlr~d by ~he pro~es~ 18 2~ yproduc:t~ o~ granulat~
produc~on. ~h~ pro~edu~e Is not ap~1 c~ble, ~ven ~,rhen disr~gar~ing th~ regulre~l inve~t~ent at d malnten~n~e co~ts, fvr ~ranulated Kall ~ro~uctY~j ~?hlch are ~tc red fo~: prc~longed perlod3 of tlme ln piles at mlddlemen and ar~ t ~en r~load~d. It ls kno~n that prolonged ~torage ~rlo~ and the a~3oclat~ physical e~fects, such ~8 sto~ge pre~ur~ and c hans~6 ln the ~ol~tu~e ~ontent o the a~blent ~s~mo ph~e, ne~ ~ivoly a~f~ct gr~nul~to~
treated ln the abovo ~en~ioned ~rocedur e.
5~he ch~llenge underlyln9 thl~ invontlon V~ to develoEI a ~tcl~ed~re for the pre~n~l~n o~ du~ ~o rm~tion durlng the loa~lng an~ tran~port~tl~n of yr~nul~te~ ~r pel l~s, o~peclally ~ertlllzer granulates, whlch llrould optl m21lly n~e~t 'che requlrem~nts of belng ~nu1ron~en'c~1ly ~ rl~n~ly, allo~ing for long storage ~e~ ~od~ of the trea'ce~ gr~nulat e~, and belng e~y to apply .
Thl~ accompll~had by t:hi 1nvent10n through the addi~10n o:~ a 11~au1d mlxture Iqust ~n~c~ol/b~nd1ng ~1 ~ture~ o~ org~nic or 1r~u~anlc ~l~bstanco~ In ~t~r ~olution to the granulat~s~ ~here t~le ~ubstance aro ~ully ~olubl~ ln on~ ~nothe~ ~nd llh~re the organlc ~ubstancP for~s ~h2. ~u~t bln~ln 3 agent ~nd ~he ~nor~an~c ~u~sta~e control~ th~ mai~tu~e ~ontent o~ the o~ the m1xture .
The ap~licablo du~t csnti~l~b1nd~ng sllIx ture mu~t st1ck t~ the granul~t~ surfa~ dtt~3 ~ust not 41~ol~r~ o~ d11uto through the ab~orbt10n o~ mol tur~ fr.om th~ atmo~ph ~r~. In ~ddit~on~F th~
m~xture ~ust not glv~ up ~ol~tur~ to th ~ po1nt o~ lov~ ng it~
~sticky~ property dur1n~ :the ~Iry1ng ~ro ~e~lur~. In ~eneral sub3tan~es are utlli~çd th~ exh1blt re Latlvely high vl~osity a~
room tem~ atur~ and pO~S~3 wal:er r~pel Io~t pro~ert1es. ~hese vi~cou~ ~ul~tance~ ~h~uld, also ~xhib1t ~ ~gh ~ h polnt, s1n~:e i .
Z~3~3L7~ 3 to achl~vQ optl~un~ co~re~ag~ a ~r~y-on¦ te~erature o ~round ~û
ce l 51 u3 1~ requ l r~d .
The long E3tor~g~ p~rlQd2~ o~ th~ treate~ ~ ~ranulate 1~ due to the lor3gevlty o th~ ~u~t blln~ing ef~ec:t o E ~he lnvorlted du3t con tr ~ ~b l nd i ng ml xtU~e . i Molas~s, whlch ~ ~ the s~cond ~ta~e ~ ~ ~ugar in bcet ~u~ar p;odu~t ion, 1~ e~pec~ sultabl~ to a~la the organlc substance, slnce lt exhlblt~ ~h~ ab'Dv~ me~nt~on~d ~ualltle~. Fo~ th~
lnorqanlc :~ub~tan~s Ca~ nd M~C12 ar~ F ~3pocl~11y ~ultablo;
Ob~ec~ of thls invehtlon 1 a ho~ ~g~n~ouu mlxtu~e o~
molass~ ~lth ~7 pe~cent ~suSIax co~ itont ~nd a solut~on CaC12 w~th conc~ntràtls~n of 30-~0 p~rc~nt CaC12 or a solution o~ MgC12 ~Ith 23-33 perc~ !n~ MyC12, ~hl~h Dptl~nally me~ts th~ chall~nge~ faco~ b,y d d~ !at ~ontrol/~indlng pr oduct .
~he manu~ tur ing of the hQmogeneoua ~ x~uLe can take place at roon~ temperature in ~n a~lt~'co~ o~ulpp el contalne~.
The ~nlxln~ o~ commerclally av~lla~ la~ with a pH ~igurQ o~
a . 2 to 8 . 7 ~ith a CaCl~ ~olutlon, wh~c ~l~o ha~ a p~ f lgur~ of ~pproxl~at~ly ~.0, cau~e~ 3 choalcal re ~ctlon~ vtllch 15 Rignifled throu~h the redu~t~ on of . ttie pJI f l~ure to 6 . ~ ~or th~ tYo comE~onent mixture. 1~ c~nnot be ~ CO~ nt~d that 'ch~ rea~:tlon is r~s~ns 1ble ~or the fact thAt tl-~ mola~ ~e~ ~rt o~ th~ ~lxtur~
rema~n~ ~table. Thl~ ~a~lllta~o~ the ~lHtlv~ly long ~torage perlod~ that c~n be aktafn~t3 u~lng th~ d~t control/bindlng mlxture, o~mpar~d to the'b~haviour o~ ~ l~re rnol~e~ under t~e sam~ con~tion~. In ~d~lon, tho mlxl q reduce3 tho vl~o~slty thu:s a1lowlng ~rob-em çrY~ ~umplns~ an~ ~aylng o~ the du~t contro1~b~ndIng ~ixture, ~Irlthout heatln , e~ren in 10w~r tom~ernt~Jrt:~ range~.
Tho applic~tlon onto the through ~l~tln ~lne du~t ~r~e granul~t~
can, dependlng on pr~per .pre~ug~ ane n DZ~cle ~electlon/ take pldce at roo3n te~s?craturq. In C0~ 18 ~n to other purely org~nlc dust ~inding ~ub~tanc~ preh~atlng 1~ n Dt necessarlly rqqulre~.
~he ~l~n-3llng o~ tho mlxtur~ ~9o~ not ~r ~s~nt any health or hyglene proble~o f or empl~oyoe~ ontc~ -t wlth lt .
~t wa:~ o~serve~l~ that the a~ldltlon o~ 0 .1$ and 1.0 ~ei~ht pert~ t, bas~d on the gr~n~lat~ to be S Fe~te~,. pxoved to he partlcularly ~ffe~tlve. In the c~e o~ It~ll fertllizbrs the amount o~ du~t controlfbi.'n~lng E~iXtUre rahge~ ~r~la 3 . 2 to O . 4 welght percent, ba~e~ on .the gx~nulate o be t~eate~ u~ed and the optlln~l ef~ctlvene~s ~chlevq~ h ~ ~re3cribed tolei~ance r~nge for the ra~d m~te~ ~a,l content ~St20 i ~ not ex~eeded in th~
aL)~ Atlon on Kall ~rtlllzer Slranulat:l c~
The du~t control ~o he qchloYe~ d~t ~ Dlned ln ~h~ ~ollo~lng mann~r:
~ample~ of ~he g~ ulat~ to be ~o n~ltl~n are fr~d o alny ~tt~ch¢d partic~les 'ch~ugh ;~tln q. Th~n the du~t control ~'bindlng ~ix'cu2~e td b~ t2st~ la ~vonly ~str1bute~ dn~
~p~ay~d onto tho 2dOg ~ les. A Eter the appllcAt~n ~f th~
mlxt~re, 1 pe~cent, b,a~e~ on the ~o~bln~d grhnu~alr w~l~ht, du~t ~ cO . ~ m~ D~d to th~ ~a ~ e~ an~ tlse comb~ne~
~mple~; ~re ~lxe~ n a ~ot~tln~ t ~; 1a~ for f lv~ ml~lu~
Ths re~ultln~ sa~p~s arc teste~ l~f~e:r ~ to~gç peLlod o~
l, 7 and 20 d~y~, ~y ~l.t1~ th~ ~ntlre ~ontent~ o~ the flask on an Alplne al~9tr~a~ ~ach 1n~ with a ~.063 mm sle~e, Th~ t~n~ perl~d mu~t b~ exactl y three mlnute~.
Afterwa~ he ~us~ la~en sl~Ye 5 Ellter p~per~ 19 ~eig~ed or ln th~ ca~e of ~ol~bl~ ~u~t, ~u~h a6 alkallne-~hloride, f lu~h~d out and th~ a~oun~ ~eter~ ne~ throu~h tltration .
The du~t control~l,n~ng p~r~ta 3e~ a~e calculAte~ ba6e~ on th~ re~ultlng 1~u~.e~.
In the ~xam~l~a sho~n ln th~ follo~ln~ t~bl~ 4 Kg o ~u~t control~bln~in~ mlxtur~ ~ro u~ @r Lnoo ~g o~ kal1um-~ulphate granulatQ ~ -O. ~
T~le: ~u~t ~ontrol ~el~it~ to unt~ea~e~ ~ample~ p~cent La~erzo~t - ~toro~e pcrlod~ Loesung = ~olutl~n, Mela~s~ - mola~se~ Nullprohe = Vntre~ to~ 3am~ Tage = d~y~
The r~ulto, ln co~p~rl~on to th~ un~ated ~p~e ~ho~ th~t V~L~
good du~t control~b1n~l~9 ls possL~le ~h~n the ~ixture.b~t~n molasses and salt ~o~ut~;~n l~o~ l~ the 50~ : 50~ ran~e. ~tray1ng from t~ optl~u~ r~tlc to, ~o~ ~x3mple 60~ molasse~ and ~0~ ~alt solutlon or vlse ~ers~ ~oe~ not ~lynl~ Ic~ntly a~ect ~ho e~ectl~enes~ o{ th~ pro~uct~. thU~ mak 1~ ~xt~eme a~cura~y ~n the m~xlng p~oce~s unncce~aary.
Th~ Pollow1ng ap~llc~tl~n exa~pl~ d~r~be th~ lnYentlon wlthout llmltlnq lt ~ny way. .
EXAMPL~
A ~ranulat~ m~nu~a~turedl ~y ~r~ gran pl4tlon ~n~ ~lfte~ in a o~1oY-Up p~oce~ ls ~tqre~ uncondltio ~ in a ~arehou~e.
l~ependent o~ the 3t~r~e ~ nn~ th, ~ or~ ln~epen~n~ o~ t~
re~lnlng mate~ials t~p~r~ture, the ml 3terlal~ p~lor to~ loa~lngO
i~ ~re~ pour~d into ~ ~lev~ to r~ove ~lpe du~t par~lclos. The next p~:OCe!S5 treat~ the ~ranula~e ~lth ~tu~t controlfbln~lng mixture prior to it b~ln~ d~o~lted ~nl to the tr2nspo~t conta~ner b~ the convey~r belt. The ~r~e ~ourln~ a ~ranul~t~ l~ spray~d wlth the 6u-t Qontrol/blnd~ng mlxt3r~ u~ln~ y noezle- located so r#
that th~ 3~ray con~ nclt)~e the p~urin~ ~nul~l:e on all ~
Thi6 18 ~ollowed by ~ redl~ tln~ z~ r tc) thorou5~hly ~ix th0 tr~a~ted gr;!~nul~ta . Th~ ~pray ~r~ ur~ th ~t 1~ u~ed r~n~s3 ~ 3 to 6 bar. .
The medIan ~c~mperature ~i~ th~ du~t ~ontro ~ nd~ mlxtu~e l~
roo~n tempe~ature, A mlxtur~ 1~ S0~ m~la~ 58~ an~ 50~ w~ter b~fi~d C~!12 ~o1~tlon coné~1nlny 3~0-~0 ,pR~cent C~ ~C12 or 50~ Mg~12 solutlon contalnlng 23-33 ~rc~n~C Mg~12 1 ~loyed ln an ~moun~
o~ 0. 3 ~eight ~erc~nt~ l:a~eid ~n th~ ~r~nu ~e to b~ ~ondltlorled.
~ ..
granulate ~n~nu~ctu~e~ by~ pre~8 ~r~nula lon and ~ ted in a fol10w-up proc~s~ i~ 3e~t ~i r~s:tly to 'che l~adlng proce~.
F`ol10~1ng the requ~r~ t,~n~ to r8~0Y~ lnæ du~t paxt~c1~ h~
condltioning m~erla1 1~ a~plle~ n ex nt~le 1. H~attng of th~
condltloning ~ater~a~ 1~ not Iequlr~d in h~3 Ca30 ~ue ~o the tempe~ure u~ the ~us'c propuceJ ~r~nulat , i~ a ~pr~y pressu~e of ~t least S to ~ bi~ is a vatlabl~.
Claims (8)
1. Procedure for the prevention of dust generation during the loading and transport of granular materials or pellets, especially fertilizer granulates, signified by the fact that a liquid mixture (dust control mixture) made up of an inorganic and an organic substance in water solution is added to the granulates. The substances are fully soluble in one another.
The organic substance preforms the dust binding function and the inorganic substance controls the moisture content of the mixture.
The organic substance preforms the dust binding function and the inorganic substance controls the moisture content of the mixture.
2. Procedure according to claim 1, signified by the fact, that the dust control/binding mixture is made up of molasses and a watery salt solution.
3. Procedure according to claim 2, signified by the fact that the salt solution is a CaC12 or NgC12 solution,
4. Procedure according to claim 1, signified by the fact, that the amount of dust control/binding mixture ranges from 0.15 to 1.0 weight percent of the materials to be treated.
5. Procedure according to claim 1, signified by the fact that the amount of dust control/binding mixture ranges from 0.2 to 0.4 weight percent of the materials to be treated, for Kali fertilizers.
6. Procedure according to claim 2, signified by the fact, that the mixture ratio, between molasses and CaC12 or MgC12 solution, ranges from 1: 0.5 to 1 : 2.
7. Procedure according to claim 3, signified by the fact, that the CaC12 solution has a concentration of 30-40% CaC12, and that the MgC12 solution has a concentration of 23-33% MgC12.
8. Procedure according to claim 1, signified by the fact, that the granulate is a Kalium-chloride fertilizer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3918524A DE3918524C2 (en) | 1989-06-07 | 1989-06-07 | Process for binding dust in granules |
DEP3918524.9 | 1989-06-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2017886A1 true CA2017886A1 (en) | 1990-12-07 |
Family
ID=6382234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002017886A Abandoned CA2017886A1 (en) | 1989-06-07 | 1990-05-30 | Procedure for dust control in granulated materials |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0401550B1 (en) |
CA (1) | CA2017886A1 (en) |
DD (1) | DD300096A5 (en) |
DE (1) | DE3918524C2 (en) |
RU (1) | RU2026850C1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5219780A (en) * | 1991-03-14 | 1993-06-15 | Gold Star Electron Co., Ltd. | Method for fabricating a semiconductor memory cell |
DE10008312B4 (en) * | 2000-02-23 | 2013-03-28 | Spiess-Urania Chemicals Gmbh | Process for the preparation of granular calcium chloride fertilizers |
BRPI1104018B1 (en) | 2011-08-31 | 2016-12-20 | Cargill Inc | anti-dusting additive, process for manufacturing anti-dusting additive, use of anti-dusting additive, method for reducing fertilizer dust emission and method for reducing dust emission in the mining industry |
WO2014032131A1 (en) | 2012-08-30 | 2014-03-06 | Cargill, Incorporated | Sugar-containing additive as anti-dusting agent |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1070198B (en) * | 1959-12-03 | |||
DE291265C (en) * | ||||
FR660167A (en) * | 1928-09-11 | 1929-07-08 | Process for treating deliquescent and hygrometric bodies, with a view to making them unsuitable for absorbing moisture | |
US2299999A (en) * | 1939-11-07 | 1942-10-27 | Bay Chemical Company Inc | Salt curing composition |
DE1177177B (en) * | 1960-12-31 | 1964-09-03 | Wintershall Ag | Process for the production of abrasion-resistant granules from Thomas phosphate slag flour. soft-earth phosphates or mixed fertilizers containing them |
US3556718A (en) * | 1967-08-31 | 1971-01-19 | Salzdetfurth Ag | Free flowing mixtures containing sodium chloride as predominant component |
US3777007A (en) * | 1969-09-29 | 1973-12-04 | Allied Chem | Anti-caking additives for inorganic salts |
LU60193A1 (en) * | 1970-01-16 | 1971-09-22 | ||
DD105424A1 (en) * | 1973-07-12 | 1974-04-20 | ||
DD136956B1 (en) * | 1978-06-01 | 1981-09-30 | Wolfgang Tittel | METHOD FOR PRODUCING NON-DUSTING ABRASIVE CALIDUIN AGENT GRANULES |
DE3003883C2 (en) * | 1980-02-02 | 1982-12-02 | Kurt Ing.(grad.) 8152 Feldkirchen Andorff | Appointment monitoring device |
DE3304303C2 (en) * | 1983-02-09 | 1986-12-04 | ISV Ilseder Mischwerke GmbH & Co KG, 3152 Ilsede | Granulated fertilizer and process for its manufacture |
DE3426960A1 (en) * | 1984-07-21 | 1986-01-30 | Wintershall Ag, 3100 Celle | Process for depositing fine-particulate solid waste materials |
US4734290A (en) * | 1985-12-12 | 1988-03-29 | Mallinckrodt, Inc. | Process for preparing a coated-particle salt substitute composition |
DE3618058C1 (en) * | 1986-05-28 | 1987-02-19 | Kali & Salz Ag | Process for granulating water-soluble fertilizers with a high proportion of kieserite |
-
1989
- 1989-06-07 DE DE3918524A patent/DE3918524C2/en not_active Expired - Lifetime
-
1990
- 1990-05-14 EP EP90109048A patent/EP0401550B1/en not_active Expired - Lifetime
- 1990-05-30 CA CA002017886A patent/CA2017886A1/en not_active Abandoned
- 1990-06-05 DD DD341335A patent/DD300096A5/en unknown
- 1990-06-06 RU SU904830274A patent/RU2026850C1/en active
Also Published As
Publication number | Publication date |
---|---|
EP0401550A3 (en) | 1991-01-30 |
DE3918524A1 (en) | 1990-12-13 |
EP0401550B1 (en) | 1993-11-03 |
RU2026850C1 (en) | 1995-01-20 |
DE3918524C2 (en) | 1995-08-10 |
EP0401550A2 (en) | 1990-12-12 |
DD300096A5 (en) | 1992-05-21 |
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