MD3318B1

MD3318B1 - Process for preparing activated building mixes on base of mineral binder

Info

Publication number: MD3318B1
Application number: MDA20050341A
Authority: MD
Inventors: Evsei SAMIS; Iana Zubrilina
Original assignee: Evsei SAMIS; Iana Zubrilina
Priority date: 2005-11-24
Filing date: 2005-11-24
Publication date: 2007-05-31
Also published as: MD3318C2

Abstract

Inventia se refera la constructie, si anume la unprocedeu de pregatire a amestecurilor de constructie activate pe baza de liant mineral. Procedeul consta in debitarea continua de liant mineral, adaos plastifiant si apa in zona de malaxare a componentelor amestecului, care include una sau mai multe camere cilindrice amplasate coaxial si un arbore conducator vertical, malaxarea componentelor prin actiunea unor tije verticale ale bratelor orizontale ale arborelui conducator, componentele amestecate se activeaza sub actiunea impulsurilor de forta cavitationale, generate de ciocnirile particulelor componentelor cu jeturile solutiei apoase de 0,1…7,5% de adaos plastifiant amestecate in prealabil cu aer, debitate in zona de malaxare sub presiunea de 0,5…6,5 atm, axele jeturilor fiind inclinate in plan vertical sub un unghi de 15…75° si deplasate in plan orizontal una fata de alta cu 45…270°, totodata liantul mineral se debiteaza sub un unghi de 45…60° si se deplaseaza in plan orizontalcu o viteza de 14,5…47,5 m/s in contracurentul jeturilor adaosului plastifiant si aerului; de asemenea amestecul este omogenizat de deplasarile radiale alternative in spirala ale componentelor de-alungul fiecarui brat orizontal, totodata asupra componentelor supuse malaxarii suplimentar se actioneaza cu impulsuri de forta hidrodinamice, generate de micsorarile locale ale presiunii, datorita prezentei in calea fluxului a unor ingustari, fiecare dintre care ocupand 5…50% din suprafata sectiunii verticale a acestui flux, apoi in zona de iesire a amestecului activat, si anume in camera cilindrica inferioara se introduce umplutura, care semalaxeaza pana la obtinerea amestecului de constructie finit.The invention relates to the construction, namely to the process of preparation of the construction mixtures activated on the basis of mineral binder. The process consists of the continuous cutting of mineral binder, plasticizer and water added in the mixing area of the components of the mixture, which includes one or more cylindrical chambers located coaxially and a vertical conductor shaft, the mixing of the components by the action of vertical rods of the horizontal arms of the driving shaft , the mixed components are activated under the action of the cavitation force impulses, generated by the collisions of the particles of the components with the aqueous solution jets of 0.1… 7.5% of plasticizer added previously mixed with air, cut in the mixing zone under the pressure of 0.5 ... 6.5 atm, the axes of the jets being inclined vertically under an angle of 15 ... 75 ° and moved horizontally one against the other by 45 ... 270 °, at the same time the mineral binder is cut at an angle of 45 ... 60 ° and moves horizontally with a velocity of 14.5 ... 47.5 m / s in the counter current of plasticizer and air addition jets; also the mixture is homogenized by the alternative radial spiral displacements of the components along each horizontal arm, at the same time on the components subjected to additional mixing, they are actuated with hydrodynamic force impulses, generated by the local pressure reductions, due to the presence in the flow path of some narrowing, each of which occupying 5 ... 50% of the surface of the vertical section of this flow, then in the exit area of the activated mixture, that is to say in the lower cylindrical chamber the filling is introduced, which semalax until the finished construction mixture is obtained.