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US 2019/0056150 A1Published application
Ceramic particles for use in a solar power tower
AssigneeCarbo Ceramics Inc.
InventorsClaude KRAUSE, Benjamin ELDRED, Steve CANOVA
Life of this patent
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Abstract
Ceramic particles for use in a solar power tower and methods for making and using the ceramic particles are disclosed. The ceramic particle can include a sintered ceramic material formed from a mixture of a ceramic raw material and a darkening component comprising MnO as Mn2+. The ceramic particle can have a size from about 8 mesh to about 170 mesh and a density of less than 4 g/cc.
Claims21
A ceramic particle for use in a solar power tower, comprising:
- a sintered ceramic material formed from a mixture of a ceramic raw material and MnO, the ceramic particles having a size from about 8 mesh to about 170 mesh and a bulk density of less than 3 g/cc, wherein the sintered ceramic material comprises Mn2O3 and Fe2O3.
A method of manufacturing ceramic particles, comprising:
- preparing a slurry comprising water, a binder, a first portion of a ceramic raw material, and manganese oxide;
- atomizing the slurry into droplets;
- coating seeds comprising a second portion of the ceramic raw material with the droplets to form a plurality of green pellets;
- and
- sintering the green pellets to provide a plurality of ceramic particles, wherein the sintering oxidizes a first portion of the manganese oxide from MnO to Mn2O3.
2 more elements
A method of manufacturing ceramic particles, comprising:
- providing a slurry of ceramic raw material, a reactant and MnO;
- flowing the slurry through a nozzle in a gas while vibrating the slurry to form droplets;
- receiving the droplets in a vessel containing a liquid having an upper surface, the liquid containing a coagulation agent;
- reacting the reactant with the coagulation agent to cause coagulation of the reactant in the droplets;
- transferring the droplets from the liquid;
- drying the droplets to form green pellets;
- sintering the green pellets in a selected temperature range to form a plurality of ceramic particles, wherein the sintering oxidizes a portion of the MnO to Mn2O3.
4 more elements
Dependencies are inferred from the claim text.