Viscous fine mineral powder fluidization reactor

Abstract

The invention discloses a viscous fine mineral powder fluidization reactor which comprises an airflow distributing room, a reactor main body and a roof, wherein a reactant gas inlet allowing airflow to enter in the tangential direction is formed in the outer wall of the airflow distributing room, a fine mineral powder and circulating recycled material inlet is formed in the lower end of the outer wall of the main body of the reactor, an outlet is formed in the top of the roof, and the airflow distributing room is communicated with the reactor main body through a gas distributor. The gas distributor adopts a conical drum with a tip facing downward, and the conic apex angle is 45 to 60 degrees; a plurality of uniform flow small holes are evenly distributed in the wall of the conical drum gas distributor, each uniform flow small hole is tangent to the outer wall of the conical drum gas distributor, and the tangential directions of the uniform flow small holes are the same with the tangential directions of the reactant gas inlet. The diameters of the uniform small holes are 1 to 2 mm, and the total area of the uniform small holes is 1.5 to 5 percent of the inner surface area of the conical drum gas distributor. The viscous fine mineral powder fluidization reactor provided by the invention does not require additional elements, is free from limitation of the temperature of the reactor, is low in energy consumption, and enables viscous fine mineral powder to be fluidized uniformly.

Description

technical field [0001] The invention relates to particle fluidization technology, in particular to a viscous fine mineral powder fluidization reactor. The reactor utilizes airflow rotating shear force and frictional collision between particles to break the viscous fine mineral powder particle agglomeration and make it fluidized . Background technique [0002] In the extraction and separation process of mineral resources, the concentrate powder obtained after removing impurities and harmful elements has a finer particle size, such as domestic concentrate powder, ultra-fine artificial rutile, etc. Due to the strong inter-particle interaction of fine particles, mutual adhesion and coalescence occur, and when they are fluidized, channeling, throttling or agglomeration are easily formed, resulting in reduced gas-solid contact efficiency and poor reaction kinetics. Insufficient conditions affect the reaction process and reactor efficiency at the gas-solid interface. [0003] For...

AI Technical Summary

Problems solved by technology

The air flow in these classic fluidized bed reactors is distributed through the porous distribution plate, the purpose is to make the air flow upward evenly on different sections of the fluidized bed, the shear force of the air flow is not high, and the mixing and collision between particles will cause viscous fine ore The fluidized agglomeration of the powder is broken and the surface renewal is insufficient, which is not conducive to the improvement of the fluidization quality of the viscous fine mineral powder and the efficiency of the reactor.

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