Kerneos

Lafargesaluminates

Imertech Sas

Bruno Espinosa

Philippe Thouilleux

Ratana Soth

Charles Walter Alt

Mark Winslow Fitzgerald

Michael Lievin

Michaël Lievin

Thomas Bier

Disclosed is a calcium aluminate cement, including a calcium aluminate with a first crystallised mineralogical phase of calcium dialuminate CA2 including one calcium oxide CaO for two aluminium oxides AlOand/or a second crystallised mineralogical phase of dicalcium alumina silicate C2AS including two calcium oxides CaO for one aluminium oxide AlOand one silicon dioxide SiO. The mass fraction of all of the first and second mineralogical phases in the calcium aluminate is greater than or equal to 80%.

Long-workability calcium aluminate cement with hardening promoted by a temperature increase, and related use

Disclosed is to a calcium aluminate cement, including a calcium aluminate with a first crystallised mineralogical phase of calcium dialuminate CA2 including one calcium oxide CaO for two aluminium oxides AlOand/or a second crystallised mineralogical phase of dicalcium alumina silicate C2AS including two calcium oxides CaO for one aluminium oxide AlOand one silicon dioxide SiO. The mass fraction of all of the first and second mineralogical phases in the calcium aluminate is greater than or equal to 80%.

The concentration d3 is alumina AL O , &mdash;A&mdash;, and the concentration d4 in lime CaO, &mdash;C&mdash;, in the initial mixture are such that d3/d4 ranges between 1.15 and 1.40. Grinding produces a cement with a size distribution as represented in a Rosin Rammler diagram has a gradient ranging between 0.75 and 0.90.

Method and plant for making alumina cement and alumina cement

Growing community of inventors

Genas, France

Bruno Espinosa