DE419562C - Process for the production of cementitious mortar formers - Google Patents

Description

Process for the production of cementitious mortar formers. In the Patent specification 407534 is a process protected from bituminous slate or To produce earth and limestone or the like zeme: it-like mortar formers. This happens -in such a way that the substances mentioned without the addition of additional fuel with Ölgewinn.ung be burned, after the burning a separation of lime and slate takes place and the latter is then mixed or ground with an excitation agent. The present Invention now relates to special measures through which significant improvements of the end product can be achieved.

It was found against acquisition that significantly better binders can be obtained if you use clay o. d-1, with burnt or slaked lime intimately mixes, if necessary into pieces, with oil production with oil shale in pieces or Grus burns and the burning material with the addition of slate ash or burnt Milled slate.

The new process is something like this: sound or other Similar substances are intimately mixed with already burnt lime. The lime can Can be used immediately in the fired state or after drying or wet extinguishing. The mixing of clay and lime happens somehow Way, expediently by dry or wet grinding. This may be the case The goods to be burned are first formed into pieces and then placed in the oven with oil shale.

The oil shale, which provides the thermal energy required for burning supplies, is added to the clay lime mixture in lump form or as grit. if If you want to turn the latter into pieces before firing, you can add oil shale also take place before deformation. Under ordinary conditions the oil shale becomes but only admitted alternately.

It is advantageous to add a mixture of finely ground to the raw mixture Add limestone and silicate-containing material or finely ground marl or the like, which can also take the place of the clay lime mixture.

After the burning, which takes place with oil extraction if possible, the Accruing firing material with the addition of slate ash or burned slate Grind cement. In place of or next to burning residues of slate can sometimes It is also advisable to add slaked lime to the material to be burned during grinding.

The cements obtained by the new process stand out mainly due to their excellent hardening ability.

Claims (3)

PATENT CLAIMS: i. Process for the production of cementitious mortar formers according to patent 40753d., Characterized in that clay or the like and burnt or slaked lime are intimately mixed in some way, optionally with the addition of a ground raw mixture of limestone and siccate-containing material or of ground marl or the like The like, formed into pieces if necessary, burned in pieces or grit with the addition of raw oil shale to produce oil and the material obtained is ground with the addition of slate ash or burned slate. 2nd embodiment of the method according to claim i, characterized in that during the grinding of the Lime slaked added instead of or in addition to burning residues from slate will. 3. Embodiment of the method according to claim i and 2, characterized in that that before the firing oil shale in pieces or grits of the raw mixture given is added before molding.