S.a. Lhoist Recherche Et Developpement

Michael Nispel

Guillaume Criniere

Thierry Chopin

Eric Perrin

Jose Noldin

José Noldin

A method for manufacturing green or thermally treated briquettes which are made up of at least one quick calcium-magnesium compound that is an iron-based compound. The method includes the steps of supplying a homogeneous pulverulent mixture to a roller press, the press having pockets where the pulverulent mixture is compressed to form the green briquettes. The rollers of the roller press develop linear speeds at the periphery of the rollers between 10 and 100 cm/s and linear pressures between 60 and 160 kN/cm. The method can also include a thermal treatment of the green briquettes to produce fired briquettes containing calcium ferrite, the briquettes having a Shatter Test Index less than 8%, and a porosity value greater than or equal to 30%.

Method for manufacturing briquettes containing a calcium-magnesium compound and an iron-based compound, and briquettes thus obtained

Composition in the form of green or thermally treated briquettes comprising at least one 'quick' calcium-magnesium compound and an iron-based compound, the method of production thereof and uses thereof.

Thermally treated briquettes containing a 'quick' calcium-magnesium compound and calcium ferrites, and method of manufacture thereof

Process for dephosphorization of molten metal during a refining process using a lime composition in the form of compacted particles having a Shatter Test Index of less than 20%, leading to a refined metal reduced in phosphorus components to the extent that the refined metal reduced in phosphorus is showing a phosphorus content lower than 0.02 w % based on the total weight of the refined metal reduced in phosphorus.

Process for dephosphorization of molten metal during a refining process

A composition based on quick calcium-magnesium compounds in the form of briquettes is shown, as well as a method for the preparation and use thereof. The composition of the briquettes contains quicklime in the form of milled particles at a concentration of at least 10% by weight and at most 100% by weight relative to the weight of the composition. The compositions in the form of briquettes have a Shatter test index of less than 10%.

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Louvain-la-Neuve, Belgium

Michael Nispel