Ceramsites prepared from coal gangue and coal slime, and preparation method for ceramsites
A technology of coal gangue and coal slime, which is applied in the field of high-strength ceramsite and its preparation, can solve the problems of insufficient strength of ceramsite, and achieve the effects of light bulk density, saving water resources, and low water absorption
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Embodiment 1
[0023] The selected weight ratio formula is as follows: coal gangue 60%, quartz sand 5%, feldspar 10%, coal slime 25% as raw materials, wherein coal gangue contains 62% silicon oxide, 20% aluminum oxide, 1% iron oxide, and The content is 10%, other components are 7%; the silicon oxide in the coal slime is 40%, the aluminum oxide is 13%, the iron oxide is 3%, the loss on ignition is 35%, and the other components are 9%. The raw materials of coal gangue, quartz sand and feldspar were firstly crushed to below 15mm by a crusher, and then crushed by a crusher, and sieved through a 200-mesh sieve, and the materials below 200-mesh were taken as samples for preparation. Then mix the selected materials with coal slime evenly, and make spherical particles with a size of 3-8mm, then put them in an oven at 110°C, dry for 30 minutes, take them out and put them in a muffle furnace, and rise to 450°C in 1 hour ℃, then rise to 1100℃ in 3 hours, keep warm for 20 minutes, and get the finished p...
Embodiment 2
[0025] Select the weight ratio formula as follows, coal gangue 70%, quartz sand 10%, feldspar 5%, coal slime 15% as raw materials, wherein coal gangue contains 70% silicon oxide, 15% aluminum oxide, 4% iron oxide, and The content is 4%, other components are 7%; the silicon oxide in the coal slime is 32%, the aluminum oxide is 8%, the iron oxide is 1%, the loss on ignition is 50%, and the other components are 7%.
[0026] The coal gangue, quartz sand and feldspar were firstly crushed to below 15mm by a crusher, and then crushed by a crusher, and sieved through a 200-mesh sieve, and the materials below 200-mesh were taken as samples for preparation. Mix the selected materials evenly, and make spherical particles with a size of 3-8mm, then put them in an oven at 110°C, dry them for 30 minutes, take them out and put them in a muffle furnace, raise them to 450°C in 1.5 hours, and then use Rise to 1200°C in 2 hours, keep warm for 40 minutes, and get the finished product after coolin...
Embodiment 3
[0028] The selected weight ratio formula is as follows, 80% coal gangue, 5% quartz sand, 5% feldspar, and 10% coal slime are used as raw materials, wherein coal gangue contains 50% silicon oxide, 25% aluminum oxide, and 5% iron oxide. The content is 15%, other components are 5%; the silicon oxide in the coal slime is 22%, the aluminum oxide is 9%, the iron oxide is 2%, the loss on ignition is 60%, and the other components are 7%.
[0029] The coal gangue, quartz sand and feldspar were firstly crushed to below 15mm by a crusher, and then crushed by a crusher, and sieved through a 200-mesh sieve, and the materials below 200-mesh were taken as samples for preparation. Mix the selected materials evenly, and make spherical particles with a size of 3-8mm, then put them in an oven at 110°C, dry for 30 minutes, take them out and put them in a muffle furnace, rise to 450°C in 2 hours, and then use Rise to 1250°C in 3 hours, keep warm for 60 minutes, and get the finished product after c...
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