Chicago : Engineering and Contracting Pub. Co. · leaf 370
e whole discharged at theoutlet, thoroughly mixed, in the form of tar-macadam. Twin towers are provided to se-cure a continuous supply of stone, the stonefrom one tower being drawn while the otheris drying and heating. This arrangement alsoapplies in the case of tar boiling, and, shouldit be… … Eng S Contg, Fig. 2. Belfast Tar Macadam Plant. a—Drying tower or towers, b—Fan. b—Hot-air pipe, b2—Branch pipe, c—Heater, d—Furnace flue. d1—Damper, d2—Bye-pass flue,e—Revolving mixer, f—Tar boiler. only charge the towers, but remove the tar-macadam to the bins for storage. The quan-tity of tar…
Buildings
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