Preparation technology of bamboo columnar carbon with ultrahigh performance

Abstract

The invention discloses a preparation technology of a bamboo columnar carbon with ultrahigh performance. The preparation technology comprises steps as follows: S1), selection of a raw material: the raw material is a bamboo carbonized material; S2), grinding and sieving: the raw material is sieved with a 325-mesh sieve, and the bamboo carbonized material of 325 meshes or fewer than 325 meshes is taken as one raw material; S3), powder grinding and material mixing: a small amount of petroleum asphalt is added to the bamboo carbonized material powder of 325 meshes or fewer than 325 meshes for powder grinding and mixing treatment, and a first mixture is obtained; S4), stirring: water is added to the first mixture for stirring; S5), pre-extrusion; S6), pressing and extrusion molding; S7), segmented drying; S8), carbonizing; S9), gradient type activation: the carbonized material is put in an activating furnace to be activated for 1-2 h at the temperature of 750-850 DEG C and then is activated for 1-3 h after the temperature is increased to 850-950 DEG C, and the bamboo columnar activated carbon is obtained. The bamboo columnar activated carbon prepared with the technology has the characteristics that strength, adsorbability and adsorption capacity are high, the ash content is low, adsorption speed and desorption speed are high, obvious cracks on the outer surface are avoided, the yield of follow-up carbonized and activated products is high and the like.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of active carbon manufacture, in particular to a preparation process of ultra-high-performance bamboo charcoal columnar carbon. [0003] 【Background technique】 [0004] As a very good filter medium, activated carbon has been applied in many fields, especially in the field of environmental protection, whether it is to purify water or air, it has become the current protagonist. At present, the main shaped carbon in the activated carbon industry is still coal-based columnar carbon. Only a few manufacturers can produce coconut shell columnar carbon, and the quality of the produced products is not very good, the strength is relatively low, and the adsorption capacity is limited. Does not have very good adsorption capacity. Coal-based columnar carbon has relatively high ash content, heavy metal content, and relatively poor adsorption effect. At present, it cannot be used in large quantities in the water p...

AI Technical Summary

Problems solved by technology

At present, the main shaped carbon in the activated carbon industry is still coal-based columnar carbon. Only a few manufacturers can produce coconut shell columnar carbon, and the quality of the produced products is not very good, the strength is relatively low, and the adsorption capacity is limited. Does not have very good adsorption capacity

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