deagglomeration

For this an efficient deagglomeration of the tubes is required.

Non-toxic Nanotubes | Blog | Futurismic 2006

In the first stage of deagglomeration, a shaft 18 having projecting radial rods 19 in compartment 20 is rotated by an air motor 21, or other suitable drive means.

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Apparatus as in claim 4 wherein pressurized gas means is provided for operating said deagglomeration means.

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As powder 13 descends through the first stage compartment 20 of the deagglomeration chamber, the hammering action of rotating rods 19 serves to aerate and precondition the powder before the second stage of deagglomeration takes place in the jet mill section 22.

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Since deagglomeration is facilitated by having the powder bone dry, the powder should be predried before sealing the cans.

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A pressure equalization tube, not shown, can be used to connect the top of the closed hopper 12 to the deagglomeration chamber 14.

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In order to reduce the energy requirement for deagglomeration, the TiO. sub.2 powder is specially treated with a hydrophobic colloidal silica which coats and separates the individual TiO. sub.2 pigment particles.

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In the jet mill 22, a plurality of radial jets 24 (e.g., six 0.050 inch diamter radial jets) direct nitrogen gas (at e.g., 120 psig) inward to provide energy for further deagglomeration of the powder.

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Apparatus as in claim 1 wherein an upstream deflector baffle is provided at the output of said deagglomeration means into said jet tube means to produce a venturi effect for minimizing back pressure on said powder feeding means.

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e. means connecting said powder storage means with said deagglomeration means for feeding radiation scattering powder from said powder storage means to said deagglomeration means;

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