An apparatus for making cellulose insulation including auger feed and
metering devices for chemical additives for discharging a measured
quantity of such additives into an initial grinder which receives raw
paper from a supply source so that an accurately measured proportion of
additive will be effectively combined with the paper in the initial
grinder. Twin augers convey the combined paper product and chemical
additive to a final grinder and an auger conveyor conveys the product to a
bagger hopper with twin augers then conveying the product to a bagging
station. The use of auger-type conveying and metering devices enables
greater efficiency of combining the chemical additive, which is a
powder-type material, with the paper and the manufacturing area has less
dust particles and this technique substantially eliminates air pollution
caused by present processes in which the chemical additives are applied
through a high volume fan which creates a major problem of disposing of
the large volume of air that has been created. In present day techniques,
the large volume of air results in substantial air pollution since the air
when it is discharged back into the atmosphere has dust particles or
chemical additive particles entrained therein and it is necessary to
utilize separating tanks to separate the air from the product prior to the
product being bagged.