Wichita eagle. [volume] (Wichita, Kan.) 1886-1890, 1888-04-22
ECONOMY IN FUEL.
A New Process by Which Waste Coal II
U,ed-Recent Experiments

A New Process By which Waste Coal 10
Used-Recent Experiments
Improved methods for obtaining artificial
beat are always 4 sahject Of interest. and ex-
periments in this direction are being made all
the tine to get heat az as low a COS. as posi-
bic. The manufacture OF water gas has been
very successful, and as il can be produced sc
a very low price. without the nuisance Of
ashes and smoke, IL Is growing IN favor and
efforts are being made to run it into houses TO
be used for heating as well as for lighting
purposes.
Another method Of heating which Is rap
idly making lis way. IL the promoters Of it
ere TO be believed, IS the pulverired coal pro
cess. A company has been formed in Phila-
delphia within short time, and within the
next sixty days the process viii be ready for
general use. The claims made for the method
are many, and IL one-haIf Of them are well
founded there can be no doubt Of It's Success
One Of the company sad 10 day: an this
country there are about a, COO, 900 tons Of coal
annually wasted, being too fine for use. or
the total coal mined il is estimated that y per
cent Of waste is made by blasting and han
ding, and that 6 = per cent. is wasted tn the
breaker Many attempts have been made TO
utilize this immense amount Of wassage, ard
until now nothing has been successful
Until now only very small quantity Of
this fine dust has been used The requisites
for success are, first, simple and efficient ma
chinery 20 reduce the coal - dust at a very
small cost; secnsd. reduction 70 an impalpa-
bic powder; third, an automatic supply Of
coal dust and air. each capable OF beng reg
ulated at viii; fourth, the reduction OF thu
coal and the simultaneous feeding OK il with
air into the fire box by the same machine;
fifth, the intimate mixture Of the tine parti-
cles OF coal dust with air. 50 that each parti-
Gle shall be surrounded by air n ii enters tho
fire box, thus iusuring complete combustion.
These conditions have t.en completely ful-
filed by a new process The method OF using
TIE dust Is as follows; The coal, no matter
what size il is, Is fed into pulvsrizer by
which ii is ground TO sn impalpabIe powder.
This is done by means OF the friction Of tho
particles, one against the other. After thu
coal is ground it passes through the puivsr-
izsr, and on coming cut it is met by a current
Of air from blower which sends II through
nozzle into a combusticn chamber under
meath the boiler This combustion chamber
has TO be specially constructed, and viii last
about as long as the ordinary one where coal
is used The arch viii last a year and the
side walls two years The supply OF coal dust
and air is automatically regulated, aud con-
plete combustion IS the result No smoke es-
capes from the chimney. and there Is no loss
Of heat in that way We feel confident that
at least thirty five per cent Of fuel viii he
saved by using the machines
an Philadelphia the pas. month, expert
nents have been made with this process ia
the Harrison safety boiler works. and the en-
gineer made the statement that where I 400
pounds OF coal per day were used under a
small boiler, at a cost Of q per ton 100 pounds
Of dust were used at cost OF about 81 per
ton. The machine for that boiler only costs
about S1s5. and he thinks there Is saving Of
at least fifty per cent The cost Of repairs %
the machine will not eIcced tlO per snnum.
One result Of using the refuse coal win be that
the price Of ordinary coal viii have TO come
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