. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. , and684 li^^S several other parts of that kingdom, f 6 ilp^gi for roasting iron pyrites in order to Jan^i^25^^^<Jk^gJUt—^ z=~»i;in iBBaMijI obtain sulphur. This apparatus was constructed by the celebrated 684 is a vertical section, in theline k d 71 0 of fig. 685, which isa plan of the furnace; the top beingsupposed to be taken off. In bothfigures the conduit may be imaginedto be broken off at e; its entirelength in a straight line is 43 feetbeyond the dotted line,
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. , and684 li^^S several other parts of that kingdom, f 6 ilp^gi for roasting iron pyrites in order to Jan^i^25^^^<Jk^gJUt—^ z=~»i;in iBBaMijI obtain sulphur. This apparatus was constructed by the celebrated 684 is a vertical section, in theline k d 71 0 of fig. 685, which isa plan of the furnace; the top beingsupposed to be taken off. In bothfigures the conduit may be imaginedto be broken off at e; its entirelength in a straight line is 43 feetbeyond the dotted line, e n, before the bend, which is an extension of this conduit. Uponthe slope a 6 of a hillock a b c, lumps r of iron pyrites are piled upon the pieces of woodi i for roasting. A conduit dfe forms the continuation of the space denoted by r, whichis covered by stone slabs so far as/; and from this point to the chamber h it is constructedin boards. At the beginning of this conduit, there is a recipient g. The chamber h isdivided into five chambers by horizontal partitions, which permit the circulation of the. 828 METALLURGY. vapors from one compartment to another. The ores r being distributed upon the billetsof wood i i, whenever these are fairly kindled, they are covered with small ore, and thenwith rammed earth /1. Towards the point m, for a space of a foot square, the ores arecovered with moveable stone slabs, by means of which the fire may be regulated, by thedisplacement of one or more, as may be deemed necessary. The liquid sulphur runs intothe recipient g, whence it is laded out from time to time. The sublimed sulphur passesinto the conduit / e and the chamber h, from which it is taken out, and washed withwater, to free it from sulphuric acid, with which it is somewhat impregnated; it is after-wards distilled in cast-iron retorts. The residuum of the pyrites is turned to account inSweden, for the preparation of a common red color much used as a pigment for woodenbuildings
Size: 2609px × 958px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
