A process for contaminants treatment of cellulose pulps, comprising the steps of:
- (a) mixing bentonite and hydrotalcite, in a mass ratio between 10:1 to 1:10, at a temperature between 4° and 100° C., thereby forming a slurry mix, wherein overall content of bentonite in the total slurry mix is at least 5%, and the slurry mix has a viscosity between 200 and 500 mPa-s, and
- (b) contacting cellulose with said slurry mix;
- (c) performing a chemical adsorption phase on said slurry mix, wherein
- wherein the chemical adsorption phase consists of a mix of clays through an application system comprising a continuous flow shearing chamber;
- wherein the continuous flow shearing chamber is a homogenizing device formed by a lower pipe section and a higher pipe section, through which inlet and outlet clay pipelines are connected, and;
- wherein the lower pipe section includes a top peripheral assembly flange, whereas the higher pipe section comprises a corresponding bottom peripheral assembly flange;
- the lower pipe section comprises an outlet pipeline that is axial to the geometric axis of said lower pipe section, which includes a connecting flange, in addition to a radially positioned side inlet pipeline including a corresponding connecting flange;
- while the higher pipe section comprises a first radially placed side inlet pipeline including a corresponding connecting flange and a second radially placed side inlet pipeline including a connecting flange, whereas the first side inlet pipeline is diametrically opposed to the second side inlet pipeline;
- the higher pipe section also comprises a third side inlet pipeline, placed on the same level regarding the first and second side inlet pipelines and, in which said third side inlet pipeline includes a respective connecting flange;
- the higher pipe section features a top peripheral assembly flange against which a closure disc is assembled through screws;
- an electric drive motor is assembled at the center of the closure disc, which drives a vertical shaft which internally traverses both the lower pipe section and the higher pipe section;
- internally, the lower and higher pipe sections and respectively comprise internal chambers, respectively indicated as and;
- the internal chamber of the higher pipe section incorporates a tubular screen that hangs from the lower face of the closure disc;
- the vertical shaft comprises three pairs of homogenizing blades along its full length, while the first of three sets of blades is provided inside the tubular screen and the second set of blades is positioned in the lower section of the chamber of the higher pipe section and, lastly, the third set of blades is placed at the very bottom of the vertical shaft, while said third set of blades is placed in the middle of the internal chamber of the lower pipe section.