Abstract

TOBON, JORGE IVÁN  and  LOPEZ, FREDY. ADAPTATION OF BOGUE´S EQUATIONS TO MINERALOGICAL ESTIMATE OF THE CLINKER FOR A COLOMBIAN CEMENT FACTORY. Dyna rev.fac.nac.minas [online]. 2007, vol.74, n.153, pp.53-60. ISSN 0012-7353.

The Bogue’s equations were created to calculate the clínker minerals phases percentage, but these were created assuming that raw materials had a 100% purity and that the reactions are complete, this had made that cement factories to overvalue or sub-value these percentages during many years. The clinker produced from a Colombian cement factory during eight months was monitoring in their two main kilns, the mineralogical phases were count to obtain quantitative information by volumetric estimation with a reflected light microscope. In same time, the mineralogical percentages were calculated by the Bogue´s equations which are traditional methods. A systematic comparison of obtained results was made and it was found that the chemical method (Bogue) underestimates the clinker mineral production in this factory up to 5%. Based on the original equations a modification of these is presented, especially in their coefficients. A set of equations was obtained for the produced materials in each kiln and then each and everyone were validated with the contrary kiln data. This procedure allowed establishing which equation set had the best statistical adjustment.

Keywords : Bogue`s equations; petrography of clinker.

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