Preparation method for formed carbon ceramic used for adsorbing humic acid
A technology of humic acid and ceramics, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problems of eye irritation and corrosion, and achieve adsorption performance Good, good molding effect, high specific surface area effect
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[0021] Example 1
[0022] Mix the attapulgite that has been pulverized and sieved to more than 120 mesh and the waste powdered activated carbon that has been pulverized to more than 200 mesh according to the mass ratio of 1:4, then add water, and put it into the kneader for full mixing and kneading for 2 hours. The above mixture was poured into a mold, and extruded. The extruded cylindrical carbon ceramic embryo was placed in an oven at 110 ° C for drying for 4 hours, taken out, cooled to room temperature, and heated at a heating rate of 5 ° C / min. Heating to 800°C, keeping the temperature for 2h, and taking it out to obtain columnar carbon ceramics after it has dropped to room temperature. Its performance is shown in Table 1.
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[0023] Example 2
[0024] Mix the attapulgite that has been pulverized and sieved to 120 mesh and the charcoal pulverized to more than 200 mesh in a mass ratio of 1:3, then add water, put it into a kneader for thorough mixing and kneading for 1 hour, and pour the above mixture into In the mold, carry out extrusion molding, put the extruded cylindrical carbon ceramic body into an oven at 110 ° C to dry for 4 hours, take it out, cool it to room temperature, and heat it to 800 ° C at a heating rate of 5 ° C / min. After 2 h, the columnar carbon ceramics can be obtained by taking it out after it has dropped to room temperature. Its performance is shown in Table 1.
Example Embodiment
[0025] Example 3
[0026] Mix the attapulgite that has been crushed and sieved to more than 200 mesh and the waste powdered activated carbon crushed to more than 200 mesh according to the mass ratio of 1:2, then add water, put it into the kneader for full mixing and kneading for 1 hour, The above mixture was poured into the mold, and extruded. The extruded cylindrical carbon ceramic embryo was placed in an oven at 110 ° C to dry and then taken out, then heated to 800 ° C at a heating rate of 5 ° C / min, and kept for 2 hours. , and take it out to obtain columnar carbon ceramics after it has dropped to room temperature. Its performance is shown in Table 1.
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