Iron and Steel in Sweden / 77 (1920) - Tema: Business and Economy, Metals Table of Contents / Innehåll | << Previous | Next >>
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Forges and Siemens-Martin Works.

MINES AND ORES.

The fundamental requisites for the manufacture of good pig-iron are high-class iron
ore and the best quality charcoal. The Sandviken Iron Works Company has long been a
share-holder in several mines supplying first-class iron-ores, the principal being the
Bispberg-, Kolningberg- and Svartvik Mines, the product of which is reckoned to be among
the best ores for steel-making of the country. During the last few years, the Company has
been clearsighted enough to buy shares in several other mining fields, such as those of
Tuolluvara (in Lapland), Stripa, Västra Ormberget, Björnberget etc. We append some
analyses of the ores, the figures standing for percentages:

	Bispberg	Kolningberg	Svartvik		Bispberg	Kolningsberg	Svartvik
Fe2O3	8.15			Al2O3	0.96	1.22	0.41
Fe3O4	82.39	58.16	60.86	SiO2	7.28	4.40	8.88
FeO		6.38	1.16	Fe	65.40	47.10	45.00
MnO	0.34	6.56	1.88	P	0.004	0.003	0.005
MgO	1.10	5.14	1.80	S	0.007	0.056	0.022
CaO	0.88	4.00	12.03

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