Method of producing active mineral additive for binding materials
OwnerPavel P. Lerke, Stanislav V. Terekhovich +7inventors
InventorsPavel P. Lerke, Stanislav V. Terekhovich, Boris V. Sindeev, Boris A. Kurnikov, Ilya M. Poddubny, Ivan I. Dongauzer, Valery V. Shnaider, Satbek Kozhamuratov, Alexandr P. Lerke
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Abstract
Initial granulated blast furnace or phosphatic slag is subjected to heat treatment at a temperature of 1000.degree.-1200.degree. C. in oxidizing gas atmosphere to produce an active mineral additive for binding materials.
Claims9
A method for increasing the whiteness and hydraulic activity of granulated blast furnace or phosphatic slag for use of said slag as an active mineral additive for a binding material, said process comprising heat treating said granulated blast furnace or phosphatic slag in an oxidizing gaseous medium at a temperature of 1000.degree.-1200.degree. C.
In a method for forming cement containing 5 to 60% by mass of granulated blast furnace or phosphatic slag, wherein the slag used in forming the cement has been heated to increase the hydraulic activity of the cement formed with said slag, the improvement comprising including in said cement granulated blast furnace or phosphatic slag which has been heat treated in an oxidizing gaseous medium at a temperature of 1000.degree.-1200.degree. C.
Dependencies are inferred from the claim text.