NOVELTY - A special spherical powdered aluminum is produced by using aluminum, low silicon, low iron and gallium, pulverizing to form spherical powdered aluminum under protection of high purity inert gases, conveying air particles to stainless aluminum oxide film generating pot, irradiating by UV rays, enabling ozone to be reacted with powdered aluminum rapidly, generating amorphous aluminum oxide film on surface, conveying to cloth dust remover after reaction, and filling spherical powdered aluminum into two layer package of metal container with anti-static plastic bag through material inlet.    USE - Production of spherical powdered aluminum for crystal silicon solar cell P type adulterant back aluminum electrode.    ADVANTAGE - The method overcomes shortages of aluminum ingot as raw material for remelting, increases content of gallium to improve characters of P type conductor and adhesion of aluminum-silicon, and reduces resistance of electrode.    DETAILED DESCRIPTION - A special spherical powdered aluminum with Dmax of not greater than 13 mu m is produced by using not less than 99.8% of aluminum, low silicon, low iron and gallium, pulverizing to form spherical powdered aluminum under protection of high purity inert gases, cooling to not greater than 40 degrees C, separating to form spherical powdered aluminum, conveying air particles to stainless aluminum oxide film generating pot, adding ozone, irradiating by UV rays, enabling ozone to be reacted with powdered aluminum rapidly, generating amorphous aluminum oxide film on surface, conveying to cloth dust remover after reaction, separating gas with powdered aluminum, and filling spherical powdered aluminum into two layer package of metal container with anti-static plastic bag through material inlet.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of the production method of special spherical powdered aluminum for crystal silicon solar cell P type adulterant back aluminum electrode. (Drawing includes non-English language text).