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Spherical silica powder is aviation, aerospace, electronic information and other important materials for high-end industries , but also in new paint , special ceramics , high-end cosmetics and other fields have a wide range of applications , with high practical value. This paper aims controllable particle size emulsion prepared spherical silica and its performance study , the main contents are as follows: ( 1 ) study the water phase , emulsifier , an oil phase , speed, temperature and other factors on emulsion stability effects . The fixed amount of aqueous phase and an emulsifier under conditions of emulsifier 1 % to 4% ( mass fraction ) among the speed is higher than 500r/min diesel fuel to form a stable emulsion . ( 2 ) The effects of emulsifier , speed, acid and reaction temperature on emulsion sample particle size. Emulsifier , the speed of the particle size of the product the most significant impact , the amount of acid and the reaction temperature had little effect on the particle size . Particle size emulsion product increases with the amount of emulsifier , the rotational speed decreases , by adjusting the amount of emulsifier , the rotational speed range of average particle size of 5μm ~ 40μm emulsion between the spherical silica products. ( 3 ) study the amount of sodium silicate material , emulsifier , speed, acid and reaction temperature on the yield of . The amount of sodium silicate raw materials , acid addition on the yield of the most significant amount of emulsifier , speed on the yield of a certain extent, the reaction temperature had little effect on yield . Emulsion product density results showed as calcination temperature increased density of the product . ( 4 ) in the early laboratory studies on the basis of geometric similarity enlarge the design through the reactor amplification experiments , amplification reaction process reactor during the reaction and laboratory beaker qualitative difference exists , amplification experiments yield decreased by about 30% sample sphericity variation, the particle size distribution becomes wider .
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