Patent ID: 9067824
Filing Date: 2015-06-30
Classification: C04B,Y02W

Abstract:
1. A method for blending different pozzolan streams to form a blended pozzolan for later blending with cement and having at least one chemical characteristic within one or more selected ranges, the method comprising: establishing the one or more selected ranges for the at least one chemical characteristic of the blended pozzolan; providing a first pozzolan stream having at least one variable chemical characteristic; providing a second pozzolan stream that differs from the first pozzolan stream relative to at least one chemical characteristic selected from the group consisting of calcium oxide content, aluminate content, silicate content, ratio of aluminate to silicate, iron content, magnesium content, and sulfate content; blending the first pozzolan stream with the second pozzolan stream at a blending ratio so as to produce the blended pozzolan; measuring the at least one chemical characteristic of the blended pozzolan in a series of readings and determining whether the at least one chemical characteristic is within the one or selected ranges; and upon determining that the at least one measured chemical characteristic is outside the one or more selected ranges, modifying the blending ratio of the first and second pozzolans streams so that the at least one chemical characteristic of the blended pozzolan is restored to within the one or more selected ranges.