Cementitious composition and apparatus and method for manufacturing the same

An apparatus for making a cementitious composition comprising:

• a classifier adapted for receiving a first stream of Type I portland cement and separating said first stream into a primary portion and a secondary portion;
• and
• a first storage silo adapted for receiving said secondary portion and a remainder portion of said first stream of Type I portland cement;
• a second storage silo adapted for receiving said primary portion;
• wherein said primary portion has a particle size distribution such that substantially all of its particles are of a size of about 10 microns or smaller;
• wherein said secondary portion and said remainder portion are combinable to form a resultant cementitious composition;
• wherein said resultant cementitious composition is selected from Type I portland cement and Type III portland cement.

An apparatus for making a cementitious composition comprising:

• a classifier adapted for receiving a first stream of portland cement and separating said first stream into a primary portion and a secondary portion;
• and
• a first storage silo adapted for receiving said secondary portion and a remainder portion of said first stream of portland cement;
• a second storage silo adapted for receiving said primary portion;
• wherein said primary portion has a particle size distribution such that substantially all of its particles are of a size of about 10 microns or smaller;
• wherein said secondary portion and said remainder portion are combinable to form a resultant cementitious composition;
• wherein said resultant cementitious composition is selected from Type I portland cement and Type III portland cement.

An apparatus for making a cementitious composition comprising:

• a first classifier adapted for receiving a first resultant cementitious composition from a grinding mill and separating said first resultant cementitious composition into a first stream of Type I portland cement and a recycled portion suitable for being fed back into the grinding mill;
• a cooler positioned to receive said first stream of Type I portland cement;
• a second classifier adapted for receiving a first portion of said first stream of Type I portland cement and separating said first portion of said first stream of Type I portland cement into a primary portion and a secondary portion;
• a first storage silo adapted for receiving said secondary portion and a remainder portion of said first stream of Type I portland cement;
• and
• a second storage silo adapted for receiving said primary portion;
• wherein said primary portion has a particle size distribution such that substantially all of its particles are of a size of about 10 microns or smaller;
• wherein said secondary portion and said remainder portion are combinable to form a resultant cementitious composition;
• wherein said resultant cementitious composition is selected from Type I portland cement and Type III portland cement.