A high-stability colloidal foam that inhibits the oxidation and self-heating of loose coal bodies and its preparation method
A high-stability, coal-body technology, used in ceramic products, mining equipment, earth-moving drilling, etc., can solve the problems of rapid water loss, short three-phase foam stabilization time, and limited oxygen isolation and cooling effect of loose coal bodies. Enhanced effect of air entrainment and expansion foaming effect
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Embodiment 1
[0033] A high-stability colloidal foam that inhibits the self-heating of loose coal oxidation, made of the following raw materials in weight percentage: 58% water, 40% fly ash, 0.8% air-entraining agent, 0.6% film coating agent, cross-linked Agent 0.6%.
[0034] In this embodiment, the preparation method of the high-stability colloidal foam that inhibits the self-heating of loose coal oxidation, the specific steps are: firstly weigh the fly ash and the coating agent in proportion, fully disperse and dissolve them in water, and stir to obtain uniform fly ash suspension; secondly, add the air-entraining agent to the above-mentioned fly ash suspension in proportion, stir rapidly for 5-10 minutes, and make fly ash foam through the process of air-entraining foaming expansion; finally, add the cross-linking agent Add the fly ash foam in proportion and stir for 3 to 5 minutes to obtain a high-stability colloidal foam.
Embodiment 2
[0036] A high-stability colloidal foam that inhibits the oxidation and self-heating of loose coal bodies is made of the following raw materials in weight percent: 63% water, 35% fly ash, 0.8% air-entraining agent, 0.6% film coating agent, cross-linked Agent 0.6%.
[0037] In this embodiment, the preparation method of the high-stability colloidal foam that inhibits the oxidative self-heating of loose coal bodies is the same as that in Embodiment 1.
Embodiment 3
[0039] A high-stability colloidal foam that inhibits the self-heating of loose coal oxidation, made of the following raw materials in weight percentage: 69% water, 30% fly ash, 0.5% air-entraining agent, 0.3% film coating agent, cross-linked Agent 0.2%.
[0040] In this embodiment, the preparation method of the high-stability colloidal foam that inhibits the oxidative self-heating of loose coal bodies is the same as that in Embodiment 1.
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