NOVELTY - A crystalline silica solar battery backfield aluminum slurry comprises aluminum powder, organic carrier, leadless glass powder and additive, where the aluminum powder comprises spherical aluminum powder and spherical aluminum powder, the organic carrier comprises ethyl cellulose, terpineol, n-butyl alcohol, glycol, diethylene glycol diethyl ether, Tween 85 (RTM: Polysorbate 85) and acetyl tri-n-butyl citrate, and the leadless glass powder comprises bismuth trioxide, meta boric acid, silicon dioxide, zinc oxide, alumina, calcium carbonate, yttrium trioxide, and tellurium dioxide.    USE - Crystalline silica solar battery backfield aluminum slurry.    DETAILED DESCRIPTION - A crystalline silica solar battery backfield aluminum slurry comprises 75 pts. wt. aluminum powder, 20-25 pts. wt. organic carrier, 0.5-4 pts. wt. leadless glass powder and 1-2 pts. wt. additive, where the aluminum powder comprises 10-30% spherical aluminum powder with particle size of 2-3 mu m and 60-90% spherical aluminum powder with particle size of 5-6 mu m, the organic carrier comprises 3-8 pts. wt. ethyl cellulose, 30-50 pts. wt. terpineol, 3-10 pts. wt. n-butyl alcohol, 4-13 pts. wt. glycol, 24-35 pts. wt. diethylene glycol diethyl ether, 2-7 pts. wt. Tween 85 (RTM: Polysorbate 85) and 5 pts. wt. acetyl tri-n-butyl citrate, the leadless glass powder comprises 35-55 pts. wt. bismuth trioxide, 30 pts. wt. meta boric acid, 0.5-3 pts. wt. silicon dioxide, 5-15 pts. wt. zinc oxide, 0.5-3 pts. wt. alumina, 1-10 pts. wt. calcium carbonate, 10-20 pts. wt. antimony trioxide, 2-5 pts. wt. gallium trioxide, 3-9 pts. wt. yttrium trioxide, and 2-8 pts. wt. tellurium dioxide, and the additive comprises silicon-aluminum alloy powder including 1-5% indium(III) oxide and 1-5% cobalt(II,III) oxide and rest silicon-aluminum alloy, and the aluminum content in the silicon-aluminum alloy is 87.5%, and the content of silicon is 12.5%. An INDEPENDENT CLAIM is also included for a method for preparing a crystalline silica solar battery backfield aluminum slurry.