Heavy metal poly-hole adsorption material and preparation method thereof
A pore adsorption and heavy metal technology, applied in the field of environment and materials, can solve the problems of solid waste pollution of eggshells, tailings pollution, etc., and achieve the effects of low price, low production cost, and reduced production cost.
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[0025] The specific steps of the preparation method of the heavy metal polyporous adsorption material prepared by utilizing lead-zinc tailings, water glass, clay, activated carbon and egg shells are as follows:
[0026] 1) Put the lead-zinc tailings in a drying oven at 60°C for 3 hours at a constant temperature, grind and pulverize them and pass them through a 100-mesh sieve, and grind and pulverize the activated carbon through a 40-mesh sieve.
[0027] 2) Weigh the pretreated lead-zinc tailings, activated carbon, and clay respectively according to the formula, and add them into a ball mill for mixing. Add a corresponding amount of water glass and water, extrude and cut in an extrusion molding machine, and then granulate in a disc granulator to obtain raw pellets with a particle size of about 5-8mm.
[0028] 3) Dry the formed raw balls at 70°C for 12h, put them into a high-temperature box furnace, and sinter at 1120°C for 1h to obtain lightweight ceramsite.
[0029] 4) Soak l...
Embodiment 1
[0031] The weight ratio of the raw material formula is: 50wt% of lead-zinc tailings, 20wt% of water glass, 20wt% of clay, and 10wt% of activated carbon.
[0032] The specific steps are:
[0033] 1) Put the lead-zinc tailings in a drying oven at 60°C for 3 hours at a constant temperature, grind and pulverize them and pass them through a 100-mesh sieve, and grind and pulverize the activated carbon through a 40-mesh sieve.
[0034] 2) Weigh the pretreated lead-zinc tailings, activated carbon, and clay respectively according to the formula, and add them into a ball mill for mixing. Add a corresponding amount of water glass and water, extrude and cut in an extrusion molding machine, and then granulate in a disc granulator to obtain raw pellets with a particle size of about 5-8mm.
[0035] 3) Dry the formed raw balls at 70°C for 12h, put them into a high-temperature box furnace, and sinter at 1120°C for 1h to obtain lightweight ceramsite.
[0036] 4) Soak light ceramsite in phosph...
Embodiment 2
[0041] The weight ratio of the raw material formula is: 60wt% of lead-zinc tailings, 20wt% of water glass, 15wt% of clay, and 5wt% of activated carbon.
[0042] The specific steps are:
[0043] 1) Put the lead-zinc tailings in a drying oven at 60°C for 3 hours at a constant temperature, grind and pulverize them and pass them through a 100-mesh sieve, and grind and pulverize the activated carbon through a 40-mesh sieve.
[0044] 2) Weigh the pretreated lead-zinc tailings, activated carbon, and clay respectively according to the formula, and add them into a ball mill for mixing. Add a corresponding amount of water glass and water, extrude and cut in an extrusion molding machine, and then granulate in a disc granulator to obtain raw pellets with a particle size of about 5-8mm.
[0045] 3) Dry the formed raw balls at 70°C for 12h, put them into a high-temperature box furnace, and sinter at 1120°C for 1h to obtain lightweight ceramsite.
[0046] 4) Soak light ceramsite in phospho...
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