Composite gel for preventing spontaneous combustion of coal
A coal spontaneous combustion and colloidal technology, applied in fire prevention, dust prevention, mining equipment, etc., can solve the problems of not being suitable for large-area filling, affecting the effect of plugging air, polluting underground air, etc., and achieves low price, slow dehydration, and enhanced The effect of adhesion
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Embodiment 1
[0020] A composite colloid for preventing spontaneous combustion of coal. The components include: 5% base material, 2% coagulant accelerator, 6% aggregate, 0.5% water-retaining agent, and the rest is water. Among them, the base material is water glass, the coagulant is sodium bicarbonate, the aggregate is diatomaceous earth, the water-retaining agent is poly(acrylic acid / acrylamide / clay) superabsorbent resin, and the clay is bentonite. The gelling time is 3 minutes.
Embodiment 2
[0022] A composite colloid for preventing spontaneous combustion of coal. The components include: 8% base material, 3% coagulant accelerator, 9% aggregate, 1% water-retaining agent, and the rest is water. Among them, the base material is water glass, the coagulant is sodium bicarbonate, the aggregate is diatomite, the water-retaining agent is poly(acrylic acid / acrylamide / clay) superabsorbent resin, and the clay is calcined kaolin. The colloid forming time is 2min.
Embodiment 3
[0024] A composite colloid for preventing spontaneous combustion of coal. The components include: 6% of base material, 4% of coagulant accelerator, 7% of aggregate, 0.5% of water-retaining agent, and the rest is water. Among them, the base material is water glass, the coagulant is sodium bicarbonate, the aggregate is diatomaceous earth, the water-retaining agent is poly(acrylic acid / acrylamide / clay) superabsorbent resin, and the clay is bentonite. The gelling time is 1 min.
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