Ceramic proppant and preparation method thereof
A technology of proppant and ceramsite, which is used in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of increased product density, difficult process control, increased use cost, etc., and achieves lower sintering temperature and high strength. , the effect of low density
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[0021] With a concentration of 0.5% polyvinyl alcohol aqueous solution as a binder, Yangquan bauxite (Al 2 o 3 content 75%), manganese ore powder (MnO 2 Purity 60%) and Norwegian Elkemn manganese tetroxide (purity 95%) made into raw pellets with a particle size of 0.425-0.85 cm for sintering experiments (see Table 1).
[0022] Table 1
[0023]
[0024] It can be seen from Table 1 that after adding Mn element, the sintering temperature decreases by 60°C (from 1440°C to 1380°C); adding 1.5% Mn 3 o 4 Reduced temperature with addition of 7.5% MnO 2 (60% purity) has the same effect; adding 1.5% Mn 3 o 4 with 7.5% MnO 2 In comparison, the breakage rate will be greatly reduced. Due to Mn 3 o 4 There are very few impurities, and there is more space to increase the content of bauxite, so that the strength of ceramsite sand has a wider space to improve.
[0025]After mixing 98.4 parts of bauxite and 1.6 parts of trimanganese tetraoxide, granulate with water and binder in a...
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