The invention discloses a method and a device for
sintering hollow
ceramic microspheres. The method comprises the following steps: step 1, rapidly mixing
fuel gas with
combustion-supporting air to react to form stable and continuous high-temperature
flame, step 2, atomizing material particles and uniformly dispersing the atomized material particles into a
flame reaction zone, and step 3, sinteringthe material with the high-temperature
flame and then cooling to obtain a hollow
ceramic microsphere product. The
sintering device comprises a
combustion-supporting air shell, a
combustion cylinder,a
powder conveying pipeline and a gas uniform
dilution pipe, wherein the combustion-supporting air shell is communicated with a combustion-supporting air inlet
pipe, the combustion cylinder is coaxially arranged in the combustion-supporting air shell, the combustion-supporting air shell is provided with a plurality of outlet pipes communicated with the combustion cylinder, the combustion cylinderis connected with an igniter, and the
powder conveying pipeline and the
fuel gas uniform
dilution pipe are arranged at one end of the combustion cylinder. With application of the method, the hollow
ceramic microbead product which is light in weight, high in strength, low in
oil absorption rate, good in sound insulation, flame retardance and electrical insulation, low in heat conduction, wear-resistant and
corrosion-resistant can be prepared at low cost.