Full resolution (JPEG) - On this page / på denna sida - VII. Manufacturing Industries. Introd. by [G. Sundbärg] K. Åmark - 11. Other Industries - Electro-chemical Industry. By V. Palmær
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
474
vii. manufacturing industries.
•clay retorts suffer damage), as on the contrary, in the electric furnace, the lead
is distilled together with the zinc. In spite of the fact that the unit of
heat produced electrically is dearer than that produced from fuel, the electric
production of zinc has nevertheless been the object of numerous experiments.
Among the few which have led to any result are those conducted by the famous
.Swedish inventor, G. cle Laval, whose method has, however, now been modified.
Direct Current Generators. Chlorate Works at Månsbo.
The electrical manufacture of zinc is carried on in the country on a large
■scale by this method at Trollhättan, at the works of the Elektrotermiska
Aktiebolaget. This company started in 1910, with a power of 7 000 electric
horse-power; in 1012 buildings were constructed for a further 11 000
horsepower, so that the capacity of the works is now 18 000 h. p. A part of the
zinc is re-distilled, so as to form zinc of a very high degree of purity (99’96 %),
which is used for producing brass and other alloys. A number of iron alloys
are also manufactured. In 1911 the production, not including ferro-alloys,
.amounted to1:
Tons Value, kr.
Lead (incl. tin-lead and silver-lead)............367 99 000
Spelter......................................1 572 668 000
Commercial zinc..............................106 48 000
Pure zinc.................. 2 017 1059 000
In the year 1913, 6 851 tons of zinc and 191 tons of lead were
manufactured.
1 Values obtained from the factories; not included in the official statistics. Overlapping
not excluded.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
