IS 1353: Methods of test for coal carbonization - caking index, swelling and Grey-King assay (L.T) coke types

24 Pages·1993·2.4 MB·English

by  Bureau of Indian Standards

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IS 1353 (1993): Methods of test for coal carbonization -
caking index, swelling and Grey-King assay (L.T) coke types
[PCD 7: Solid Mineral Fuels]
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“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
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“Knowledge is such a treasure which cannot be stolen”

( lJw??t=jr )
TgT
Indian Standard
METHODS OF TEST FOR COAL
CARBONIZATION -CAKING INDEX,
SWELLING NUMBER AND (LT)
GRAY-KING ASSAY
( First Revision J
UDC 662’66 : 662’8’057_‘1

Q BIS 1993
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

May 1993 PriceGroap 8
diloS lareniM sleuF lanoitceS ,eettimmoC DCP 7
DROWEROF
sihT naidnT dradnatS ( tsriF noisiveR ) was adopted yb the uaeruB of naidnI ,sdradnatS after the
draft dezilanif yb the diloS lareniM sleuF lanoitceS eettimmoC had neeb devorppa yb the ,muelorteP
laoC dna detaleR stcudorP noisiviD .licnuoC
sihT dradnats was tsrif deussi ni the raey 1959 nehw ti was prepared no the sisab of detimil
lanoitagitsevni data elbaliava htiw lartneC leuF Research ,etutitsnI lanoigeR laoC yevruS snoitatS
dna other sertnec of noitagitsevni dna research ni those .syad ehT eettimmoC at that emit dluoc
evired tifeneb of gniyduts suoirav stnemucod detalucric yb lanoitanretnI noitazinagrO for
noitazidradnatS ( 0SI ) hcihw were osla ni the evitamrof stages. ehT ,eettimmoC elbisnopser for
the noitaraperp of siht dradnats had, therefore, degasivne ot etadpu the emas as dna nehw erom
data are edam .elbaliava
nI the tneserp noisrev esu of tnerapsnart etacilisorob ssalg retorts ni noitidda ot those of acilis
retorts has neeb debircserp no the sisab of lanoitagitsevni work enod dna data edam .elbaliava
,sediseB a deifilpmis tey elbailer dohtem for noitanimreted of klub ytisned of ylenif dehsurc edortcele
ekoc/nobrac ezeerb has neeb detaroprocni ni ecalp of the remrof emosrebmuc .dohtem ehT sliated
of suoirav test sdohtem evah osla neeb ylbatius .detadpu
nI the noitaraperp of siht dradnats elbaredisnoc ecnatsissa has neeb nward morf the gniwollof
stnemucod deussi yb the lacinhceT ,eettimmoC ,yleman CT/OSI 27 - diloS lareniM sleuF of -retnI
lanoitan noitazinagrO for noitazidradnatS ( 0SI :)

)i 0SI 501 : 1981 laoC - noitanimreteD of the elbicurc gnillews ,rebmun dna
)ii 0SI 502 : 1982 laoC - noitanimreteD of gnikac reyap gniK-yarG coke test.
gniwO ot the gniyrav scitsiretcarahc of ,laoc tests debircserp ni siht dradnats are laciripme dna dilav
ylno ”ii the snoitidnoc of test are yldigir .devresbo
roF the esoprup of gnidiced whether test stluser ylpmoc htiw the srnemeriuqer of tnereffid
sdradnats of ,ytilauq the lanif ,eulav devresbo or ,detaluclac gnisserpxe the tluser of a test, llahs eb
dednuor off ni ecnadrocca htiw SI 2 : 1960 seluR‘ for gnidnuor off laciremun seulav
( revised )'.
rebmuN of tnacifingis secalp deniater ni the dednuor off eulav dluohs eb the emas as that of the
deificeps eulav ni the etairporppa .dradnats
IS 1353 : 1993
Indian Standard
METHODS OF TEST FOR COAL
CARBONIZATION - CAKING INDEX,
SWELLING NUMBER AND (LT)
GRAY-KING ASSAY
(F irst Revision )
1 SCOPE 4 GNILPMAS
-
sihT dradnats sebircserp the sdohtem of test for laoc 4.1 Methods of Sampling
,noitazinobrac ,yleman gnitanitulgga or gnikac ,xedni Methods of gnilpmas llahs eb as debircserp ni
gnillews rebmun dna wol erutarepmet )TL( -yarG SI 436 (Pa.rt teS/l 1) : 1964.
gniK .yassa
5 GNIKAC DNA GNILLEWS SEITREPORP
FO LAOC
2 REFERENCES
5.1 ehT gnikac power of laoc si the ytreporp or
gniwolloF naidnI sdradnatS are yrassecen stcnujda ytiliba of laoc ot mrof a tnerehoc ssam nehw the
ot siht :dradnats ylenif powdered laoc si heated rednu deificeps
snoitidnoc ni the .yrotarobal A rebmun of sdohtem
IS No. Title evah neeb devlove for the tnemerusaem of siht
,ytreporp tub the noitaulave of the stluser of those
436 (Part 11 Methods of gnilpmas of laoc dna has dereffid esuaceb the ytreporp derusaem had ton
Set 1) : 1964 :ekoc Part 1 gnilpmaS of ,laoc syawla neeb yltcaxe the .emas tI si a rettam of
noitceS 1 launaM gnilpmas tsri/(
ecneirepxe that for yrotarobal ,sesoprup the
revision) tnemerusaem of eno or other of these seitreporp sevig
1350 (Part /4 Methods of test for laoc dna a ylriaf elbailer noitacidni of the gnikoc ssalc otni
Set 2) : 1975 coke : Part 4 etamitlU ,sisylana hcihw a nevig laoc .sllaf eerhT sdohtem are ni ,esu
noitceS 2 noitanimreteD of :yleman
negortin tsrif( revision) a) dnaS Method for gninimreted noitanitulggA
,xednI
)b elbicurC gnillewS rebmuN ,tseT dna
3 TERMINOLOGY
c) gniK-yarG yassA )TL( Coke .epyT

roF the esoprup of siht dradnats the gniwollof
ehT dnas dohtem for gninimreted ssenikcits or
snoitinifed llahs .ylppa
gnitanitulgga power has deniag lareneg ecnatpecca
ni aidnI tub there are ynam sevitanretla for the
3.1 gnitanitulggA xednI gnikaC( )xednI
noitanimreted of gnikac power rehtie ylevitatitnauq
mumixaM elohw rebmun oitar of dnas ot laoc ni or .ylevitatilauq
a erutxim of dradnats dnas dna laoc ,hcihw after
6 GNITANITULGGA XEDNI OR GNIKAC
gnitaeh rednu deificeps ,snoitidnoc sevig a tnerehoc
XEDNI
,ssam elbapac of gnitroppus a 500 g ssam dna
gnitareneg ssel naht 5 tnecrep of esool powder. tI 6.1 eniltuO of the Method
si yrassecen that yllaiceps prepared ralugna dnas of
morF a seires of tests, the mumixam oitar of dnas
cificeps graded ezis dna ytilauq dluohs eb .desu
ot laoc si deniatbo ni a laoc dnas erutxim ,hcihw
after noitazinobrac rednu deificeps ,snoitidnoc sevig
3.2 elbicurC gnillewS rebmuN
a tnerehoc ssam elbapac of gnitroppus a 500 g ,ssam
eziS xedni of the coke nottub decudorp nehw 1 g at the emas emit the noitroporp of esool powder
of laoc si heated rednu deificeps ,snoitidnoc as gnieb ssel naht 5 tnecrep of the ssam of dnas dna
derapmoc htiw a set of dradnats .seliforp .laoc sihT si the gnitanitulgga xedni or gnikac .xedni
tI si dootsrednu that siht dohtem sedivorp ylno na
3.3 Low Temperature (LT) Gray-King Assay etamixorppa erusaem of the ycnednet of a laoc ot
etanitulgga or ot ecudorp a pmul morf powder. oT
eziS dna erutan of coke eudiser dna osla the sdleiy
erusne elbailer ,nosirapmoc ti si yrassecen that
of coke dna suoirav stcudorpyb ,yleman tar, ,rouqil
evitarapmoc tests neewteb tnereffid operators dluohs
ainomma dna gas decudorp yb gnizinobrac 20 g of
eb deirrac tuo htiw seilppus morf the emas hctab
laoc at C°006 ni a tnerapsnart etacilisorob ssalg or
of .dnas nI lla cases the hctab rebmun dluohs eb
acilis retort rednu deificeps .snoitidnoc
stated.
1
IS 1353 : 1993
6.2 Apparatus 6.3 dnaS
)a Weighing bottle - stoppered, ,lacirdnilyc tI si ylemertxe tnatropmi that the dnas desu ni siht
yletamixorppa 75 mm ni thgieh dna 2.5 mm test dluohs eb of mrofinu ytilauq htiw regard ot ,ezis
ni .retemaid ,ytirup ,ssenprahs etc. ehT dradnats acilis dnas si
ton elbulos ni hot etulid cirolhcordyh dica ot a
b) Silica crucible - ,tneculsnart htiw ,dil of greater tnetxe naht 0.5 .tnecrep tI stsisnoc ylniam
neve taper, the relmi ecafrus gnieb free morf
of ralugna selcitrap of erup ,acilis dna si free morf
.ssenhguor ehT elbicurc llahs mrofnoc ot the
,seitirupmi hcus as ,yalc ,klahc or nori .etanobrac
gniwollof :snoisnemid
tI si graded ot pass SI eveiS 30 (296 )snorcim dna
lanretnI retemaid at the 38 ? 1 mm ot eb deniater no SI eveiS 20 (211 )snorcim gniniatnoc
top of elbicurc ton erom naht 5 tnecrep of ezisrevo dna ton erom
naht 10 tnecrep of ,ezisrednu the ezisrevo dna
lanretxE retemaid at 26 2 1 mm
ezisrednu lairetam gnieb ton ylbaicerppa tnereffid
mottob morf the deificeps neercs .sezis ehT dnas llahs ton
kaerb nwod no gnitaeh for three sruoh at C°029 ot
ssenkcihT of :sllaw
hcus na tnetxe that the egatnecrep of ezisrednu
tA top of elbicurc 2.25 ? 0.50 mm
lairetam si desaercni yb 2.5. dnaS of siht ytilauq
tA mottob 1.25 ot 1.5 si elbaniatbo morf the lartneC leuF Research etutitsnI
111111
,.I.R.F ,rahiB .aidnI
thgieH of elbicurc 42 t 0.75 mm
suidaR of ,erutavruc 3.5 mm 6.4 erudecorP
dednuor edge of elbicurc
4 yrd-riA the laoc dna dnirg ti so that the
mottob
lairetam tsuj passes hguorht SI eveiS 20 (211
muminiM htdiw of dil 46 mm .)norcim nI gniraperp the laoc ot siht ,ezis
ti si laitnesse that yrev enif gnidnirg dluohs
mumixaM ,htdiw -dulcni 60 ot 62.5 mm
eb dediova ecnis the stluser deniatbo are ot
gni noisnetxe ot etatilicaf
emos tnetxe tnedneped nopu the tnuoma of
gnildnah
yrev enif lairetam ni the .elpmas
ssenkcihT of dil tuobA 1.5 mm
b) hgieW otni the gnihgiew ,elttob the etisiuqer
retemaiD of recessed 36 mm stnuoma of the laoc dna the dradnats dnas
part of dil ot evig 25 g of the ,erutxim gniniatnoc the
two stneidergni ni the derised .snoitroporp
Depth of recessed 3 ot 4 mm xiM the dnas dna laoc yb gnitator the ebut
part of dil neewteb the regnif dna ,bmuht litnu the
lc Spat&z - edam morf sheet latem 0.7 mm erutxim si of mrofinu ecnaraeppa ot the .eye
ruoP the erutxim otni the acilis ,elbicurc the
(or 22 )GWS
renni ecafrus of hcihw gnivah neeb derevoc
4 Silica triangle support - of hcus snoisnemid htiw a reyal of citihparg nobrac inorf a
that the elbicurc [see 6.2 ])b( si dleh thgirpu suoiverp test.
htiw the esab 10 mm evoba the level of the
lC sA emos noitagerges of the stneidergni yam
.hcneb
rucco gnirud the refsnart ot the elbicurc
)e Glazed paper etelpmoc the gnixim yb gnitator the ,elbicurc
gnitser no sti ,esab htiw the tfel dnah ni a
)f MuJfle furnace - gas or yllacirtcele heated,
esiwkcolc-retnuoc .noitcerid tA the emas ,emit
elbapac of gniniatniam a ydaets erutarepmet
dloh the alutaps htiw the reworran dne ni
of 900 + 15OC, dedivorp htiw a ylesolc gnittif
the thgir dnah ylthgils denilcni ot the lacitrev
door. ehT heat evreser of siht ecanruf dluohs
yawa morf the operator htiw the edalb of
eb hcus that the erutarepmet si deniager
the alutaps gnicaf the noitcerid of noitator
erofeb the dne of the neves setunim gnitaeh
of the ,elbicurc dna htiw sti redaorb dne
doirep of the test. ehT erutarepmet dluohs
desremmi ni the .erutxim yldetaepeR esiar
eb denimreted yb snaem of a elbatius detalusni
dna rewol the alutaps elihw the elbicurc si
elpuocomreht dna ,retemtlovillim the hot
rotated, eunitnoc the gnixim for two ,setunim
noitcnuj of the remrof gnieb decalp yawa
dna wardhtiw the .alutaps leveL the ecafrus
morf the roolf or sedis of the ecanruf tub
of the erutxim yb gnisserp yltneg htiw the
ni the noitisop ot eb deipucco yltneuqesbus
reworran dne of the rebbur ,gnub care gnieb
yb the .elbicurc
nekat gnirud siht noitarepo that the elbicurc
f4 Rubber bung - ,dilos gnimrofnoc ot the si ton derraj or the stnetnoc .depmat
gniwollof :snoisnemid
4 revoC the elbicurc htiw sti dil dna refsnart
:retemaiD ot the acilis elgnairt .troppus ecalP the elbicurc
Narrow dne 35 mm dna the ,troppus ni na cirtcele or derif-sag
ediW dne 41 mm ,elffum ylsuoiverp desiar ot a ydaets
thgieH 32 mm erutarepmet of C°009 r? 15OC dna dedivorp
2
IS 1353 : 1993
htiw a ylesolc gnittif door. ecalpeR the 7.2 Gas Heating Method
elffum door. tA the dne of neves setunim
wardhtiw the elbicurc dna the troppus 7.2.1 Apparatus
morf the ecanruf dna wolla ot looc ylwols
ehT ylbmessa of the sutarappa si nwohs ni .giF 1.
ot moor erutarepmet elihw gnidnats no
tI stsisnoc of the gniwollof .stnenopmoc
na sotsebsa .draob tA the dne of 30 ot 40
setunim evomer the elbicurc ,dil -htiw
draw the elbicurc morf the troppus dna ecalp
ti no sti esab no a sheet of dezalg paper.
d ecalP the rebbur gnub htiw the reworran dne
gnitser no the ecafrus of the stnetnoc of the
.elbicurc trevnI the elbicurc dna rebbur gnub
yb gnidloh the mir of the elbicurc dna the
rebbur ,gnub no etisoppo ,sedis neewteb the
bmuht dna dnoces regnif of eno .dnah yrraC
tuo siht noitarepo revo the sheet of dezalg
paper so that yna selcitrap gnillaf morf the
elbicurc dna gnirehda ot the regnif dna bmuht
yam eb .detcelloc esiaR the elbicurc yllacitrev
yawa morf the dezinobrac eudiser of dnas
dna .laoc tfiL the laudiser cake morf the
,gnub gnidloh ti yltneg neewteb the regnif
dna bmuht (care gnieb nekat ot tcudorp on
powder) dna ecalp ti htiw sti daorb dne no
a nialecrop .elit yltneG rewol a 500 g ssam 0
litnu sti esab rests nopu the dezinobrac
eudiser dna ton whether the ssam si detroppus SOTSEBf* TNfM?,C
tuohtiw .gnilbmurc hgieW the esool powder t CIEL.UTn mB)U RNER (WALL SSENKKYT PIPING ),mnS
no the dezalg paper, together htiw that morf
the top of the .gnub
)f retfA the test, the relmi edis of the elbicurc
lliw eb dnuof ot eb derevoc htiw a thgirb
reyal of .nobrac sihT dluohs eb deniater
morf test ot test dna dluohs ton eb tnrub
off.
g) Repeat the test htiw gnisaercni soitar of
dnas ot ,laoc the ssam of the latot erutxim

syawla being 25 g and repor t as agglutinating All dimensions in millimetres.
xedni the mumixam oitar hcihw stroppus a FIG. 1 APPARATUSF ORn o CRWBIE SWELLING
ssam of 500 g htiw the noitroporp of esool NUMBERT EST
powder gnieb ssel naht 5 tnecrep of the ssam
of the .erutxim
7.2.1.1 Silicn
,tneculsnarT tauqs shape, gnivah a acilis dil htiw
7 CRUCIBLE SWELLING NUMBER
gnir eldnah gnihgiew ton erom naht 12.75 g or ssel
naht 11 g htiw yticapac yletamixorppa 17 lm dna
7.1 General
htiw the snoimemid nevig ni .giF 2.
ehT gnillews rebmun of ,laoc as denimreted yb the
elbicurc gnillews rebmun test, debircsed ,woleb si
dednetni ylelos ot evig emos evitarapmoc erusaem
of the gnillews seitreporp of .slaoc morF a
noitaredisnoc of the egareva error, ti has neeb
deniatrecsa that the naem tluser of ruof tests no the
emas laoc elpmas si correct ot nihtiw 2 1 tinu ni
99 tuo of 100 cases dna nihtiw C- 0.5 tinu ni SO’
tuo of 100 cases, there si suht emos ecnarussa that
tnereffid srotagitsevni nac ylesolc ecudorper
stluser no the emas .laoc ehT ecruos of heat desu
ni the test si a gas renrub or yllacirtcele heated
.ecanruf ehT lanoitanretnI noitazinagrO for All dimensions in millimelres.
noitazidradnatS )OSI( has dednemmocer htob the FIG. 2 CRVJBLE AND LID FORC RUCIBLES WELLING
gnitaeh .sdohtem
NUMBER
3
IS 1353 : 1993
nI case where the rewol ecafrus of the elbicurc dil 7.2.3 Grinding the Coal
si ton ,talf ytluciffid yam eb decneirepxe ni gnissessa
yrd-riA the laoc ot eb tested dna dnirg ti so that
the gnillews fo~rebmun the .laoc oT emocrevo ,siht
ti passes SI eveiS 20 (211 )snorcim [see 6.4 (a)].
ti si detseggus that a llams acim etalp dluohs eb
ehT gnidnirg dluohs eb enod ton erom naht two sruoh
detresni neewteb the dil dua the elbicurc erofeb
erofeb gnitset laoc of weak gnillews scitsiretcarahc
gnitaeh the .laoc
ot tneverp error eud ot .noitadixo
7.2.1.2 Silica triangle
7.2.4 Procedure
gnitsisnoC of tneculsnart acilis ,gnibut 6 ot 6.5 mm
hgieW 1.00 ot 1.01 g of the ylhserf dnuorg laoc
lanretxe ,retemaid detnuom no lekcin-emorhc eriw
otni a elbicurc dna ylthgil tap the elbicurc 12 semit
the htgnel of the edis gnieb 63 ot 64 ,mm the retemaid
no the hcneb ot level the ecafrus of the .laoc revoC
of the debircsni elcric gnieb yletamixorppa 32 .mm
the elbicurc htiw the dil dna ecalp ti thgirpu ni the
acilis elgnairt detroppus ni the thguard .dleihs thgiL
7.2.1.3 Teclu burner
the gas dna heat for hcus emit as si deriuqer for
12.7 mm .erob ynA other elbatius epyt of renrub the emalf of the gninrub elitalov rettam ot eid ,tuo
yam osla eb used. dna ni yna case for ton ssel naht 2.5 .setunim wollA
the elbicurc ot looc dna ylluferac evomer the coke
7.2.1.4 Draught shield .nottub Repeat the test litnu ruof snottub evah neeb
.deniatbo nI emos cases ti yam eb yrassecen ot
Made morf sotsebsa tnemec ,gnipip yletamixorppa
prepare 5 .snottub retfA each test evomer the nobrac
150 mm gnol htiw 100 mm lanretni dna 110 mm
eudiser ni the elbicurc dna epiw the roiretni of the
lanretxe .sretemaid ehT gnipip has three stols at eno
elbicurc .naelc
,dne 25 mm deep, ni hcihw the eriw snoitrop of
the acilis elgnairt rest (see .giF 1).
7.2.5 Examination
7.2.2 Conditions of Heating erapmoC the coke nottub htiw the dradnats derebmun
seniltuo ni .giF 3. roF the ,nosirapmoc rotate the
The gas erusserp dna the gas dna ria seilppus for nottub tuoba sti sixa so that the tsegral eliforp si
the renrub llahs eb detsujda yb gnigralne the ezis
detneserp ot .weiv A dohtem of gniweiv hcihw
of the gas tej so that the emalf si yletamixorppa
sedulcxe the effect of xallarap si nwohs ni .giF 4.
300 mm .gnol htiW the renrub so ,detsujda the noitisop
eht-ecalP gniward htiw hcihw the nottub si ot eb
of the ,elbicurc gnitser ni the acilis elgnairt dna
derapmoc yltcaxe ni the ertnec of the dleif of noisiv
detroppus ni the thguard ,dleihs llahs eb so degnarra
morf the top of the .ebut egnarrA the nottub so that
that the emalf spolevne the elbicurc dna the
the mumixam cross noitces si ni enil htiw the gniward
erutarepmet of the renni ecafrus of the mottob of
nehw deweiv htiw eno eye decalp yletaidemmi revo
the elbicurc reaches C°008 2 C°01 ni 1.5 setunim
the top of the .ebut
dna 82OOC + 5OC ni 2.5 setunim morf the emit the
gas si detingi .tsrif htiW these ,snoitidnoc ti lliw
7.2.6 Report
yllareneg eb dnuof that the esab of the elbicurc si
tsuj evoba the pit of the eulb .enoc esehT snoitidnoc The gnillews xedni of a nottub si the rebmun debircsni
ylppa ylralucitrap ot laoc gas of tuoba 4 500 -K ni the eniltuo that sti tsegral eliforp tsom ylraen
.3mn/laC roF gas of hcum rehgih or hcum rewol .sehctam Report the naem gnillews rebmun of the
cifirolac eulav a tnereffid htgnel of emalf yam eb ,seires expressed ot the tseraen flah .rebmun
.deriuqer ehT esu of ruof selbicurc so that the test
nac eb deirrac tuo ni dipar ,ecneuqes gniwollof a 7.2.7 roF nellows-non ,nottub the rebmun ‘0’ si desu
knalb test ot mraw the thguard ,dleihs si lufpleh nehw ot ebircsed slaoc hcihw evig a powder .eudiser ehT
ytluciffid si dnuof ni gniniatta the dradnats rate of rebmun ’%l‘ sebircsed slaoc hcihw evig a tnerehoc
.gnitaeh esehT snoitidnoc of gnitaeh llahs eb eudiser that lliw ton raeb a 500 g .ssam ehT rebmun
checked at tneuqerf slavretni yb snaem of a enif ‘1’ sebircsed slaoc hcihw evig a tnerehoc eudiser
eriw elpuocomreht detresni hguorht a decreip ,dil that cracks otni two or three hard eceip nehw the
dna gnivah sti detcetorpnu noitcnuj ni tcatnoc htiw 500 g ssam si .deilppa
the ertnec of the esab of the ytpme .elbicurc sihT
elpuoc dluohs eb edam of seriw ton reivaeh naht 7.3 Electrical Heating Method
0.22 mm munitalp or 0.45 mm esab ,latem dna the
dne of the elpuoc dluohs eb ni the mrof of denettalf 7.3.1 Apparatus
pool so that the noitcnuj dna a noitrop of each eriw
rest no the mottob of the elbicurc gnirud a 7.3.1.1 Furnace
erutarepmet .tnemerusaem ehT snoitidnoc for gniniatta
A elbatius epyt of yllacirtcele heated ecanruf si
the correct gnitaeh gnivah neeb ,deniatrecsa the
nwohs ni .giF 5, hguohtla other sepyt of secanruf
sutarappa yam yltneinevnoc niamer yltnenamrep
yam osla eb ,desu dedivorp that the stluser deniatbo
errected yb gnixif the thguard dleihs no a elbatius
are the emas nihtiw( % )tinu as those deniatbo htiw
,troppus the renrub gniniamer dertnec dna gnieb
the gas gnitaeh .dohtem
detsujda in situ.

4
.GIF 3 STANDARD PROFILESA ND CORRESPONDINCGR UCIBLES WELLING SREBMUN
ehT ecanruf detartsulli stsisnoc of a evoorg yrotcarfer
etalp yletamixorppa 100 mm ni retemaid dna 20 mm
,kciht gniyrrac the gnitaeh ,tnemele hcihw nac eb
dellarips cillatem .lioc nA detrevni acilis hsid of
1 mm llaw ,ssenkciht 10 nun hgih dna yletamixorppa
85 nun lanretxe ,retemaid si decalp revo the sgnidniw
dna acts as a troppus for the .elbicurc

ehT setalp are dednuorrus yb a yrotcarfer rednilyc
of yletamixorppa 225 mm ,retemaid derob ot a depth
of tuoba 50 mm htiw a 100 mm retemaid .eloh ehT
rednilyc si dettif htiw a yrotcarfer dil 75 mm ,kciht
a eloh 50 mm ni retemaid si derob ni the ertnec
of the yrotcarfer dil ot wolla for noitresni of the
.elbicurc ehT elohw ecanruf si decalp ni na muinimula
or dlim leets case.
A eloh derob hguorht the esab of the ecanruf selbane
a elpuocomreht ot eb decalp ni tcatnoc htiw the
edisrednu of the acilis .hsid
ehT ecanruf llahs eb deppiuqe htiw a elbatius -otua
remrofsnart retem dna elbatius erutarepmet gnirusaem
.ecived
7.3.1.2 Crucible and lid
emaS as debircsed rednu 7.2.1.1.
7.3.1.3 Pierced silica lid L BUTTON
ralimiS ot that debircsed ni 7.2.1.1 tub htiw a
All dimensionsi n millimetres.
6 mm eloh ot etadommocca the elpuocomreht
.giF( 6). .GIF 4 APPARATUFSO RV IEWINGT HEB LJITON