This historic book may have numerous typos and missing text.
Purchasers can usually download a free scanned copy of the original
book (without typos) from the publisher. Not indexed. Not
illustrated. 1922 edition. Excerpt: ...slags consist of CaO, S102
and A120; with small amts. of MnO, MgO and FeO. If unusually high
in CaO they are less viscous. The usual uses for granulated and
lump slag are mentioned and coal mine filling is suggested. Slag
sand mixed with Ca(OH2) makes a good mortar. Slag with soda and
sand adns. should make good glass. Cement manuf. is the rational
use for slag. Its normal av. compn. requires only slight
modification by CaO addn. This cannot be readily done because of
the large heat requirement. G. has used with success an elec.
furnace for making CaO addns. Passow has proved that for cement
making, slags must have the phys. structure produced by rapid
cooling. Otherwise they will not set even if of correct chem.
compn. It is necessary also to have as accelerator for the finely
ground slag a quantity of portland cement clinker equal to at least
1/5 of the slag. Iron portland cement contains approx. 2 parts
portland cement to 1 part slag. Slag lime bricks are made as sand
lime bricks are made. They are best hardened by exposure to the
exhaust from gas-enginesf A porous brick is made by pressing and
steaming a mixt. of lime and fine slag with granulated slag. J. O.
H. (C. A.) 135. Report on heat insulators. ANON. H. M. Stationery
Oflice, Kingsway, London, W. C., Special Re1l., No. 5(l922);
Analyst, 47, ll9--22.----An abstract. Special app. was devised for
the measurement of thermal cond. in abs. measure. Data obtained
indicate practically the same thermal cond. for cork, slag wool,
charcoal and wood fibers, when of good quality and dry (0.0001l g.
cal. per sec. per cm. per 1.). Different brands of cork, etc., of
good quality show but little differences in their efiiciencies as
insulators. Tests indicate that a considerable decrease in the...
|Country of origin:
American Ceramic Society Abstracts
||246 x 189 x 12mm (L x W x T)
||Paperback - Trade
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