Method for continuously preparing white carbon black and ammonium fluoride by carrying out fluosilicic acid ammoniation

Method for continuously preparing white carbon black and ammonium fluoride by carrying out fluosilicic acid ammoniation

  • CN 101,863,482 A
  • Filed: 05/26/2010
  • Published: 10/20/2010
  • Est. Priority Date: 05/26/2010
  • Status: Active Application
First Claim
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1. the method for silicofluoric acid ammonification continuously preparing white carbon black and Neutral ammonium fluoride is to the comprehensive utilization method of phosphorous chemical industry by product silicofluoric acid ammonification continuously preparing white carbon black and Neutral ammonium fluoride, it is characterized in that this method comprises the steps:

  • A. at-5~

    30 ℃

    , open stirrer and air compressor machine, air compressor machine is blown into the reactor outlet pipe with pressurized air, is that the silicofluoric acid of 2%-35% and the ammoniacal liquor of 2%-37% add in the reactor simultaneously with concentration;

    B. silicofluoric acid and ammoniacal liquor add to upflow tube position in the reactor, open baiting valve, continuous feeding and discharging, and the pH value of reaction is controlled at 6.5-9.0, and be 24hr the reaction time of successive reaction;

    C. in the reaction process, the material filtering that step b emits obtains white carbon black filter cake and Neutral ammonium fluoride filtrate, and the white carbon black filter cake obtains the white carbon black finished product that surface-area is 160~

    350m2/g after washing drying, and filtrate is that concentration is the ammonium fluoride solution of 1.7-35.9%;

    D. behind the reactor successive reaction 24hr, with material emptying, the cleaning reaction device is in order to secondary response use down, material c set by step filters and obtains white carbon black filter cake and Neutral ammonium fluoride filtrate, and the white carbon black filter cake obtains the white carbon black finished product that surface-area is 160~

    350m2/g after washing drying;

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