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Патент USA US2110280

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March 8, 1938.
H. F. vlEwi-:G
2,110,280
APPARATUS AND METHOD FOR MAKING MINERAL WOOL
Filed May 1s, 1936 v
NN
INVENTOR
H'e/‘man F.' l//eweg.
“EMM/M
ATTORN EY
Patented Mar. 8, 1938
2,110,28@
g UNi'rEo STATES
PA‘T'ENr .i
N
3.11am u
_APPARATUS AND
MINERAL
METHUD
WOOLFORl
Herman r. View“, -Ingham rai-k, N. J.,- 'u
signor to Johns-Manvllle Corporation, New
\ York, N. I., a corporation of New York
-
f
.
Application may 1s, 193s. semina. 19,4413 '
zo claim \ (ci. isi-zi)
This invention relates to an apparatus and
method for making mineral wool.
l d
In the making of> mineral wool, it is vconven
tional to form,ilrst. _a melt of suitable material
5 such as a silicate composition derived largely from
blast furnace slag or rock..> The molten mate#
' rial is then shredded, "as, for instance, byallow
ing the said material to fall, as a small stream,
_ at a temperature of about 2,400° F., into'a rapidly
"
(between the side. edges is and u) and becomes,
progressively, substantially wider than the-thick
v -ness ofthetube, thatis. Athan the'distance be
tween the top i! andthe bottom» It thereof.'
For' instance..I.have used a tube of approximately 5
1 foot diameter aty thefend adjacent to the
to a maximum width, measured horizontally/,of
about
5
feet.„
.
A
`
'
v
'
`
10 moving blast of steam. 'I'he fibres thus formed.
`:suitably tbis‘tubumr blow chamber-may be
along with a lesser proportion of unñberized and -iiojfeet or so in length and may slope upwardly
shot-like particles that it is practically impos
away from the- shredding position ‘ Il, say at a
sible to avoid. are carried as a suspension in!v a
gas stream into equipment for recovery ofthe
15 suspended solid material from the stream. Thus,
the suspension of'ilbres and shot may be intro
>
shredding position il that expands continuously
'
1o’~
pitch of , about an inch to 'the foot. At thefar
end maybe placed the air-permeable felting
member 22,' with means'for producing suction 15
therebehind.
_.
,.
-
Y
‘
duced into a large settling chamber and the . >-The suspension of iibres and unflberized ma
fibres and shot allowed to settle into a felt on
the bottom of the chamber, suitably a moving
20 conveyer
It' is an
beltobject
of air-permeable
of the invention
material.
to provide
»
means for separating effectively the desired
fibrous material from the incidentally occurring
terials inthe gas is formed into _a flat band as
the suspension-moves'through the tube and there
is a gradual reduction ’of the velocity of the 20
stream or band as the tube increases in width.
’I'his produces separation of the unnberized shot
like
particles from the suspended fibres which
shot-like particles in the suspension described.` figgmore buoyant’and have a lower rate of set
25 Another object is to recover, that is wash from
the separated shot an additional amount of nbres
that may be originally entangled therewith. An
25
At the z'one indicated generally by i1, there
is an upward deflection of the flat band or
other object of the invention is to form a rela- - stream. '111e deflection follows the curvature i8
tively uniform and coherent felt of the mineral of the upper wall of the tube.
3u wool libres. A further object is to reduce the size . This deflection causes separation of shot-like 30
of the blowing chamber required for a given rate
' of -production of silicate wool. Other’objects and
advantages will appear from the description that
follows.
I 35
~ 1
The invention comprises the novel features of
the method and apparatus herein described', par
particles from fibres, 'the said particles tending
to continue nearly in their normal trajectories. `
whereas the- relatively buoyant nbres follow
closely the direction of lthe deflected stream of
las.
-
-
'
,
`
35
To wash out- those libres that 'may be en
tangled with the separated shot, there is intro
ticularly the method of and means for deiiecting
completely the stream of gas containing the sus
duced, into the primary gas stream described.
pended -iibres and shot-like particles and then an auxiliary 'stream oi' gas, such as air, through
40 felting the ilbres in the upwardly deflected -‘one or more louvers I8. Preferably, there is a 40
stream. In one embodiment, the invention com
'series of louvers each extending substantially
prises the washing, by air or other gas'. of the completely across the lower portion of the said
shot-»like particles separated by the de?ection of tube. The louvers are preferably closely adjaf
the suspension of ñbres.
_'
cent to the said zone of deflection of the primary
45 The invention is illustrated in the attached stream and are in'part atleast disposed» beyond 45
- drawing and will be described for the
the point at which the- deiiection begins, on theV
of exempliilcation in connection therewith.
convex side of the stream.
~ _
_
Fig. 1 shows a. side view of my improved ap
The lowest part of the-felting member 22v ex
paratus, partly broken away for clearness of posed to the stream is above the plane ofthe
50 illustration.
'
straight portion of the top IS of the tube» I2; 50
A result of these features described is denec-f
v = l .. , Pig.12
suspension
shows a plan
of mineral
view of the
woollsame.
fibres with a
tion of the primary stream, generally in thefdi-`
-:"p'roportion. of shot-like particles is blown
i
55
Ii'into a somewhat tubular blowing
l! that increases substantially in width
rection of -a smooth arc of a circl .
rf
The gas admitted through the louvers fily pro-'l -
duces a progressive or repeated washing of the 55
3
2,1 10,280
2. In an'apparatus for making mineral wool,
ration of the said particles therefrom, changing
means for blowing a suitable molten material
the direction of movement of the fibres to a .
largely into fibres and, to a lesser proportion, in
to shot-like particles and suspending thus the
fibres and particles in a stream of gas, means for
forming the suspension into a band, means for
greater extent than the direction of movement
deflecting the'band flatwise. to separate shot
therefrom, means for continuously washing the
deflected shot, and means for recovering fibres
10 from the deflected band.
'
of the particles by defiecting the movinggaseous
medium and thereby producing further separa
tion of the fibres and particlesfdirecting the
heavier particles away from the‘flbres, passing a
gaseous stream counter-current to theV particles
to wash entangled fibres therefrom and return
the washed fibres to the suspended fibres. and re
3. In an apparatus for making mineral wool.' covering the fibres from the gaseous medium.
means for blowing a suitable molten material in
to fibres and, unfiberized particles and suspend
ing the fibres and particles in a stream of gas,
15 suction means for deflecting the stream includ
ing the suspended fibres, a trap for the reception
of the unfiberized particles separated by deflec
8. A methodof making mineral wool compris
ing projecting a_ fluid .iet against molten material
to form fibres and unfiberized particles suspended
iny a moving gaseous medium. confining the mov 15
ing gaseous medium to a definite cross-sectional
area, increasing the cross-sectional area in the '
tion of the stream and disposed at a' pœítion to ‘ direction of movement of the stream to decrease
the rear of the zone of the said deflection, theV en
20 trance to the trap being in the line of the trajec
tories of the separated particles, and the rear wall
of the trap being positioned-so as to deflect the
particles into the trap, and means for recovering
the fibres from the `deflected stream.>
' v 4. A method of making mineral wool compris-4
ing projecting a fluid jet against molten material
to form ñbres and unflberized vparticles suspend
ed in a moving gaseous medium, confining the
moving gaseous medium toa definite cross-sec
30 tional area, progressively increasing the cross
sectional area of the stream horizontally and in
the direction of movement of the stream to de
crease the velocity of the fibres and to induce sep
aration of the unfiberized particles therefrom,
and'recovering the fibres from the gaseous me
dium.
I
5. A method of making mineral wool compris
ing projecting a fluid jet against molten material
to form fibres and unflberized particles suspend
ed in a 'moving gaseous medium, confining the
moving gaseous medium to a definite cross-sec
tional area, increasing the cross-sectional area
in the direction of movement of the stream to
decrease the velocity of the fibres and induce sep
45 aration of the particles therefrom, applying suc
tion to the stream to change the direction of
movement of the fibres to a greater extent than
the direction of movement of the particles and
thereby producing further separation of the ii
bres and particles, directing the heavier parti
cles away from the fibres, and recovering the fi
bres from the gaseous medium.
6. A method of making mineral wool compris
ing projecting a fluid jet against molten material
to form fibres and unfiberized particles sus
pended in a moving gaseous medium, confining
the moving gaseous medium to a definite cross
sectional area, increasing the cross-sectional area
the velocity of the fibres and induce separation
of the said particles therefrom, applying suction
to the stream to change the direction of move
ment of the fibres to a greater extent than the
direction -of movement of the particles and ,there
by producing further separation of the fibres and
particles, directing >the particles away from the
ñbres, and recovering the fibres on a foraminous
surface with the aid4 of suction applied there
through.
'
,
`
I
g
x
9. A method ofmaking mineral wool lcompris
ing projecting a fluid jet against molten mate 30
rial to form fibres and unfiberized particles _sus
pended in a moving gaseous medium, confining
the moving gaseous medium to a definite cross
sectional area, increasing the cross-sectional area
in the direction of movement of the fstream to 35
decrease „the velocity of the fibres and induce
separation of the said particles therefrom, chang
ing the direction of movement of the fibres to a
greater extent than the direction of movement
of the particles by de'fiecting the moving gaseous'
medium and thereby producing further separa
tion of the fibres and particles, directing the par
ticles away from the fibres, 'passing a gaseous
stream counter-.current to the particles to wash
entangled fibres therefrom and return the washed
fibres to the suspended- fibres, and recovering the
fibres on a foraminous surface with the aid of_
suction applied therethrough.
.
f
10. A method of making mineral wool com
prising projecting a fluid jet against molten ma
terial to form fibres and unfiberized particles
suspended in a moving gaseous medium, confin
ing the moving gaseous medium to a definite
cross-sectional area, applying suction to the
stream to change the direction of movement of 55
of movement of the said particles and thereby
producing separation of the fibres and particles,
directing the particles away from the ñbres, and
the fibres to a greater extent than the direction
in the direction of movement of the stream to de
crease the velocity of the fibres and induce sepa
recovering the fibres on a foraminous surface
ration of the particles therefrom, applying suc
with the aid of suction applied therethrough.
tion to the stream to change the direction of
11. A method of making mineral~ wool compris- ‘
movement of the fibres to a greater extent than ing projecting a fluid jet against molten material
the direction of movement of the particles and - to form fibres and unñberized particles suspend
thereby producing further separation of the fi
ed in a moving gaseous medium, confining the
_bres and particles, and recovering the fibres from moving gaseous medium to a definite cross-sec
the gaseous medium.
_
tional area, changing the direction of movement
7. A method of making mineral wool compris
of the fibres to a greater extent than the direc
ing projecting a fluid jet against molten material tion of movementof the particles by deflecting
the moving gaseous medium and thereby produc
7.0 to form fibres and uniiberiaed particles sus
pended in a moving gaseous medium, confining
the moving gaseous medium to a definite cross
sectional area, increasing the cross-sectional area
in the direction of movement of the stream to de
75 crease the velocity of the fibres and induce sepa
ing further separation of the fibres and particles.
directing the heavier particles away from the
fibres, passing a gaseous stream >counter-current
to the particles to wash entangled libres there- v
from and- return the washed fibres to the sus-- 75
4-1"
.
:t1-'fossov f ~
to a
ilbres.<and
the
ons.
toraminous surface with the aid oi suction ap- ’ proactively
plied therethrough.
,
_
l2. an apparatus'l for makingimineral wool
comprising means for treating molten material
to torni
and‘unilberised particles stupend
ed inamovinggaseousmedium.meanstorcon-
deiinite-cross-sectional. area
thedirection
ment
velocity
0! oi theilbresand
,
'
theiibresanlisaidparticles,meanatorcliasging.4
n
thedirectionoimovementoithe'gaseommedimnw'
lining said gaseous medium and suspended sub
stances toa definite cross_»sectionalv area which
progressively increases in the direction of move
mentoithesœpensiomtothereby decreasethe
velocityoitheiibresandinduceseparation ofthe
ilbres and particles. means ior chansins thedi
z-ection oi movement oi the gaseous medium to
cause further separation oi the ßbres and par
ticleameanstordeilectingtheparticlesaway'
the icraminous member.
.
'
~
,
i'l. An apparatus ior making mineral wool
fronitlieilbi'es,meansiordi'rectingastreamo!V comprisingmeansiorproiectingaiiuidietagaiult
gascounter-currenttotheparticlestowashen
tangled iibres thereiromv and return the yashed
ilbresto thesuspended iibres,andmeansiorrecovering the suspended libres.
.
i3. An apparatus ior making mineral wool com-~
prising means lfor treating molten material to
iorm ilbres and unnberised parücles suspended in
a moving gaseous medium. means for confining v
said gaseous medium and suspended substances to
a deiinlte cross-sectional area which progressive
ly increases horizontally and in the direction o!
movement oi the suspension. to thereby decrease
the velocity ot the’ilbres and induce separation o!
the iibres and said particles. and means tor re
covering the suspended iibres.
. i4. An apparatus for making mineral wool com
attheendoisaidtuheremoteiromtheietsand
'atrapiorthereceptionoithesaidpardelesin
communication withsaidtuhe.
18. An apparatus for making mineral wool
comprisingmeansforproiectingailuidletasainst
molten material to form nbres-and uniiberlaed
particles suspendedin amovlnggaseommedium.
a tube for receiving said suspension. said tubs
progressively increasing in cmq-sectional area
horizontally andinthedirectionoi movementol
prising means for treating molten material to - the suspension, and a ilbre felting member posi
form iibres and uniiberised particles suspended in
tionedattheendoi'saidtuberemoteiromtheiet.
a moving gaseous medium, means .for conilning
19. The method oi 'producing mineral «Wol
said gaseous medium and suspended `substances
comprising forming libres and uniibsrind par»
' to a deiinlte cross-sectional area which progres
sively increases horizontally and in the direction
oi movement oi the suspension, to thereby de-,„
crease the velocity oi the libres and induce sepa
ration of the iibres and said particles. means for
deilecting the particles away from the ßbrcs, and
tieles from heat liqueiled raw material andam
pending‘theilbresandparticlesinamovinggas».
eous stream. coniining the moving streamto‘a
de?nite cross-sectional area.increasingthecrœsectional area in the direction oilmovement oi =
thestreamtod’ecrease'thevelocltyoltheilbrœ
,
and induce separation'ot theparticlesthereirom.
l5. An apparatus for making mineral wool com
directing additional gasinto the stream to in
'crease the velocity Athereof anddraw the ihres
means for recovering the suspended nbres.
prising means for treating molten material - to
form fibres and uniiberised particles suspended
awayfromtheuniiberisedparticleaandrecover
in a movin!! gaseous medium. means for coniln
ingtheilbresiromthestream..v
ing said gaseous medium and suspended'sub
stances to a dennite cross-sectional ai'ea- which "
progressively increases in the direction of move
v
l»
An apparatusjior producing minerai woolk
comprising means for treating molten materials
toiormiibrasandunilberisedparticles
in a moving gaseous streannmeans for ccnnning -`
said stream to ya deilnite'cross-sectional area
the fibres and said particles. suction means for ' which progreœively increases in the direction oil
changing the direction oi' movement- of the movement or the suspension. to thereby decrease
gaseous medium to cause further separation ot the velocity of the fibres and induce separation oi
the libres yand. said particles. means for directing
the >nbres and particles. and means for recover
additional gas into the streamÀ to increase tlie`
ing the suspended libres.l
`
16. An apparatus for making mineral wool velocity thereof and further separate the libres
comprising'means-ior treating molten material from the particles, and‘mea'ns for collectingthe gg
to form nbres and uniiberlsed particles suspended ilbres from the stream.,
ment of the suspension. to thereby decrease the
velocity oi the iibres and induce separation oi
in a moving gaseous medium, means ior coniln
ing said gaseous medium and suspended sub
muuu r. vrswno.
_
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