C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/45
C04B 7/34 (2006.01) C04B 18/06 (2006.01) C04B 18/12 (2006.01)
Patent
CA 1170674
ABSTRACT OF THE DISCLOSURE With hydraulically setting shaped brick, particularly for construction, composed of a) 4 to 30% by weight hydraulically or similarly acting binding agent, such as cement, high-hydraulic lime, lime or hydraul- ically reacting plastic or mixtures thereof; b) about 60 to 95% by weight mineral aggregate material; and c) 0 to 10% by weight other additions, the raw material basis is extended with regard to aggregate material, and deposited amounts of country rock from mining are reduced, since the aggre- gate material is composed of country rock (mining waste material) from mining, particularly hard coal mining, with a grain size up to 15mm and a finest grain portion under 0.2mm from 10 to 45% by weight. To produce the shaped brick, the mixture of binding agent, granular aggregate material and water, if necessary after a matur- ing, is shaped and subsequently, particularly in autoclaves, hard- ened, or under addition of reaction-prompting and boiling point elevating substances, such as sodium hydroxide, hardened at normal pressure, if necessary in a steam chamber; therewith the mining waste material is first ground to a grain band up to a maximum 15mm grain size with a finest grain portion under 0.2mm from 10 to 45% by weight, in particular having been obtained through milling or separation measures. Through particular choice of granulation and density, the mining waste material can be adjusted to desired quality characteristics and the physical characteristics of the shaped brick varied, corresponding to utility. -1-
396542
Ackermann Manfred
Leininger Dieter
Rohling Rolf
Ackermann Manfred
Fetherstonhaugh & Co.
Leininger Dieter
Rohling Rolf
LandOfFree
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