Preparation method of nano metal oxide powder in supergravity environment
A nano metal and oxide powder technology, applied in rare earth metal oxides/hydroxides, lanthanide oxides/hydroxides, nanotechnology, etc., can solve the problem of poor product reproducibility, wide particle size distribution, nanoparticle Small particle size and other problems, to achieve the effect of sufficient reaction, shortened time and fast cycle
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[0038] Such as image 3 As shown, a preparation method of nanometer metal oxide powder in a hypergravity environment, the process adopts such as figure 1 The supporting equipment shown, the specific steps are as follows:
[0039] Step 1), using a dispersant as a medium, prepare a rare earth salt solution with a concentration of 0.01-1mol / L and a precipitant solution with a concentration of 0.01-3mol / L respectively, and heat the prepared rare earth salt solution and precipitant solution respectively The device is preheated, and the preheating temperature is 30-150°C;
[0040] Step 2), the solution obtained in step 1) is passed into the inside of the spherical screen packing of the supergravity rotary bed through the feed port according to the flow rate of 0.1-10L / min, and the spherical screen packing is driven by the motor to rotate at a high speed to generate a powerful Shear force, the material is sheared into tiny droplets and liquid film, and a chemical reaction occurs, a...
Embodiment 1
[0045] A preparation method of nanometer metal oxide powder in a hypergravity environment, the process adopts such as figure 1 The supporting equipment shown, the specific steps are as follows:
[0046] (1), with the OP-10 dispersant as the medium, prepare a cerium nitrate solution with a concentration of 0.2mol / L and an ammonium bicarbonate solution with a concentration of 1mol / L respectively; the prepared solution is preheated by an external heating device, The preheating temperature is 30°C;
[0047] (2) Pass the solution prepared in step (1) into the inside of the spherical wire mesh filler through the feed port at a flow rate of 1L / min, and the spherical wire mesh filler reacts in the state of tiny droplets and liquid film for 10 seconds through high-speed rotation After entering the cavity to form a nanoparticle precursor slurry;
[0048] (3) The nanoparticle precursor slurry obtained in step (2) is blown into the mixing channel in the form of micro-bubbles or mist thr...
Embodiment 2
[0053] A preparation method of nanometer metal oxide powder in a hypergravity environment, the process adopts such as figure 1 The supporting equipment shown, the specific steps are as follows:
[0054] (1), prepare the lanthanum nitrate solution with a concentration of 0.1mol / L and the ammonium bicarbonate solution with a concentration of 0.8mol / L using polyethylene glycol dispersant as the medium; preheat the prepared solution through an external heating device , the preheating temperature is 30°C;
[0055] (2) Pass the solution prepared in step (1) into the inside of the spherical wire mesh filler through the feed port according to the flow rate of 0.01L / min, and the spherical wire mesh filler reacts in the state of tiny droplets and liquid film through high-speed rotation 8 Seconds later, it enters the cavity to form a nanoparticle precursor slurry;
[0056] (3), the nanoparticle precursor slurry obtained in step (2) is blown into the mixing channel in the form of micro-...
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