Colloidal Silicaproduction process characteristics and industrial applications

Acid concentration is moderate. Acid concentration is too high, a larger  Colloidal Silica particles , gathered at a coarse pore Colloidal Silica, Ifn I gel solution in a concentration large particles that gel network structure tightness increases, together Shiyou vulnerable to pore, a person has a tendency to cancel each other out. Furthermore, high concentrations of acid, the gel solution viscosity increases, to a certain degree of difficulty of granulation, in addition, the size of the acid concentration is also subject to the gel particle size, structure and production design capacity constraints . Acid-base temperature. Acid-base reaction too fast. Ifu wood body acid-base reaction is exothermic reaction time together and when the exothermic particles r, therefore, making either a particle r has been great. "Granulation speed slowed down. is bound to exceed the technical requirements range of granulation negative; acid-base temperature is too low. a grain r decreases. easy to form pores, but the mountain "a few Colloidal Silica solution temperature is too low, the viscosity increased also to manipulate the negative particles. Therefore, the temperature should be moderate pH. Gel time gel granulation granulation process is another critical process parameters. Mixed acid-base reaction is from the beginning to the size of the gel formation time experienced so far, including gel time and granulation time. Gel granulation time is short. You can make the Colloidal Silica solution reaction is not adequate or inadequate uniformity, making an uneven distribution of the concentration of particles r the formation of local accumulation of gel or partially close. This leads to the granulation process in the bubble glue pieces of rubber or plastic ball strong enough and so on. This was also the internal structure of particles caused by rubber ball disorder. Large range of pore size distribution is a major cause. Therefore, in the production practice. On "a few air granulation in the process allows the range. Large rubber particles. Time to as long as possible. Small plastic particles. Shorter time may be appropriate. Several Colloidal Silica in the reactor tank special fine grain silicone ball. Will have a longer time. _ To increase mixing head.
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