A process for removing blue illite particles in quartz sand by high-pressure acid leaching
A process method, the technology of quartz sand, applied in the direction of silica, silicon oxide, etc., can solve the problem of not finding and removing blue particles in quartz sand powder, achieve great reference value and application prospects, high product purity, and impurity removal good effect
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Embodiment 1
[0045] The 24-120 mesh quartz sand produced by a quartz sand company in Liucheng Town, Heyuan City, Guangdong Province was used as raw material for processing. The whiteness of the raw material was 65. After sampling and observation, it was found that the quartz sand sample contained blue mineral particles. Carry out XRD test to this blue particle, the result is as follows figure 2 As shown, the blue particles are confirmed to be blue illite after comparison with the standard spectrum.
[0046] The processing method is as follows:
[0047] (1) High temperature and high pressure pickling:
[0048]Put the acid solution (1% HF, 22% HCl, 77% water) into the reaction kettle with stirring, temperature control and internal and external heating of high temperature and high pressure polytetrafluoroethylene steel lining, and put in the quartz sand under the condition of stirring , the control slurry concentration is 40%, and the stirring speed is 40r / min; heat the reactor with heat c...
Embodiment 2
[0058] The 24-120 mesh quartz sand produced by a quartz sand company in Liucheng Town, Heyuan City, Guangdong Province was used as raw material for processing. The whiteness of the raw material was 63. After sampling and observation, it was found that the quartz sand sample contained blue mineral particles.
[0059] The processing method is as follows:
[0060] (1) High temperature and high pressure pickling:
[0061] Put the acid solution (1% HF, 18% HCl, 81% water) into a high temperature and high pressure polytetrafluoroethylene steel-lined reaction kettle with stirring, temperature control and internal and external heating, and put in quartz sand under the condition of stirring , control the slurry concentration to be 40%, and the stirring speed is 40r / min; heat the reactor with heat transfer oil, control the temperature in the reactor to be 190°C, and the pressure to be 1.3-1.4Mpa; Stop heating and filter out the lye for the next step of processing;
[0062] Sampling ob...
Embodiment 3
[0071] The 24-120 mesh quartz sand produced by a quartz sand company in Liucheng Town, Heyuan City, Guangdong Province was used as raw material for processing. The whiteness of the raw material was 63. After sampling and observation, it was found that the quartz sand sample contained blue mineral particles.
[0072] The processing method is as follows:
[0073] (1) High temperature and high pressure pickling:
[0074] Put the acid solution (1% HF, 25% HCl, 74% water) into a high temperature and high pressure polytetrafluoroethylene steel lined reaction kettle with stirring, temperature control and internal and external heating, and put in quartz sand under the condition of stirring , control the slurry concentration to be 40%, and the stirring speed is 40r / min; heat the reactor with heat transfer oil, control the temperature in the reactor to be 180°C, and the pressure to be 1.0-1.1Mpa; Stop heating and filter out the lye for the next step of processing;
[0075] Sampling ob...
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