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Manufacturing method for active carbon/tourmaline composite material and product manufactured according to manufacturing method

A composite material and manufacturing method technology, applied in chemical instruments and methods, carbon compounds, silicon compounds, etc., can solve the problems of low strength, high cost, non-degradable pollutants, etc., achieve high mechanical strength and wear resistance, improve Specific surface area and pore diameter, and the effect of reducing the firing process

Active Publication Date: 2014-02-19
曹南萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current activated carbon has the following defects: (1) Most of them are powdery, although there are a small number of fixed-shaped products, but the strength is low; (2) It can only absorb pollutants but not degrade them, and it will fail after adsorption saturation. Recycling
For example, the patent CN200510045991 "Porous ceramic composite functional ball and its production process" provides a method for making tourmaline and activated carbon composite ceramics, but this process uses the prepared activated carbon as raw material, so there is secondary firing ability The problem of high consumption and emissions, and the poor combination of tourmaline and C (compared to the combination of tourmaline and nascent C), did not use the characteristics of binders such as self-generated tar during carbonization of carbon-containing raw materials, resulting in product strength Poor, high cost; due to the strong adsorption of activated carbon, it can absorb water several times its own weight, and the adsorption capacity of coal tar that helps forming is also as high as 40%. Therefore, it is difficult to form by wet process with CN200510045991 technology of! It is even more impossible to use wet plastic technology to prepare products with complex shapes, especially honeycomb products, and this technology also consumes a large amount of coal tar to ensure the shape, resulting in higher costs

Method used

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  • Manufacturing method for active carbon/tourmaline composite material and product manufactured according to manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Dry the fine hardwood sawdust and lignin with a particle size of 100 mesh until the moisture content is 7.5%, and weigh according to the components of hardwood powder 72kg, lignin 4.0kg, tourmaline powder 4.0kg, and sepiolite 2.0kg. For batching, pour the above-mentioned raw materials into a heatable kneader, turn on the machine and stir evenly, evenly add 18kg of coal tar with a temperature of 90°C and a pitch content of 50%, and mix at 90°C for 10 minutes;

[0033] 2. Put the billet into the extruder and extrude it into a cylindrical shape. During this process, the coal tar in the mixture penetrates evenly into the tissue of the hardwood powder. The components such as coal tar, oil and lignin in the hardwood powder have great Great cohesiveness, so that the wood powder is easy to be compacted, extruded from the extrusion die hole to form a shape, and then cut off by a cutter set near the outer periphery of the extrusion die, the semi-finished product obtained, the s...

Embodiment 2

[0036] 1. Dry the fine walnut shell powder of 120 mesh until the water content is lower than 3%, weigh and mix the ingredients according to the components of walnut shell powder 91.5kg, lignin powder 5.5kg, bentonite 1.0kg, and tourmaline powder 1.0kg. Pour the raw materials into the mixer, turn it on and stir, and mix thoroughly. After about 10 minutes, spray 10kg of the pre-prepared 10% PVA aqueous solution, continue to stir for 15 minutes, and then discharge the material. Pass through a 24-mesh sieve and spread it out in a closed space. 24h, and turn it every 6~8h;

[0037] 2. Pass the stale billet through a 24-mesh sieve, put it into the mold cavity of a two-way pressurized hydraulic press, pressurize slowly to the highest pressure under 40MPa, keep the pressure for 35s, and then slowly release the pressure to obtain a disc shape Semi-finished products; if there are patterns engraved on the upper and lower surfaces of the mold, the green body with three-dimensional pattern...

Embodiment 3

[0041] 1. Take 90kg of 200-mesh low-ash weakly cohesive Datong bituminous coal with a moisture content of less than 3%, 6.0kg of tourmaline powder (crushed until the particles with a particle size of less than 1μm account for more than 90wt%), and a moisture content of less than 3%. 2.5kg of fine bentonite and 1.5kg of hydroxypropyl methylcellulose powder are put into a mixer and fully mixed to obtain a billet; at the same time, 0.65kg of sodium carboxymethylcellulose is weighed, dissolved in 12.35kg of water, and prepared Form an aqueous solution containing 5% of CMC as a binder for forming;

[0042] 2. Take 10.0 kg of the above base powder, spray evenly into 1.0 kg of an aqueous solution of sodium carboxymethyl cellulose with a mass concentration of 5%, and pass through a 24-mesh sieve to obtain granules. Use a hydraulic press to press the granules into blocks, then crush and sieve to obtain granules of about 0.5mm, which are used as masterbatches for rolling into balls;

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Abstract

The invention relates to a manufacturing method for an active carbon / tourmaline composite material and a product manufactured according to the manufacturing method. The active carbon / tourmaline composite material product which has an adsorption value larger than 100 ml / g to methylthionine chloride and an adsorption value larger than 950 mg / g to iodine can be obtained by mixing the following raw materials in percentage by weight: 53-97 percent of an active carbon precursor raw material, 1-34 percent of an organic matter assistant forming agent, 1-10 percent of tourmaline powder and 1-3 percent of a natural clay mineral raw material and then performing forming, drying, carbonization and activation. The product can be made into various shapes, is widely applied to adsorbing and degrading of formaldehyde, benzene and nitric oxides in air and toxic organic matters and heavy metal ions in a water body and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of non-metallic solid materials, and in particular relates to a method for manufacturing an activated carbon / tourmaline composite material and a product thereof. Background technique [0002] Human production and living activities have made the atmosphere, water and soil more and more seriously polluted. Chemical, papermaking, printing and dyeing, pharmaceutical, pesticide and other industries discharge a large amount of toxic and colored sewage, causing surface water and groundwater in many places to be polluted to varying degrees. Ionic pollution, cadmium content in rice in Guangdong exceeds the standard, surface water in some areas is polluted by phenol, benzene ring, halogenated hydrocarbons, ammonia nitrogen, nitrogen phosphorus, organic phosphorus and organic chlorine, etc. There are many cancer villages in the Huaihe River Basin, Taihu Lake in Jiangsu and Liaoning, Blue-green algae or red tides caused by algae o...

Claims

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Application Information

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IPC IPC(8): C01B31/08C01B33/20C01B32/318C01B32/324C01B32/33C01B32/336
Inventor 曹南萍
Owner 曹南萍
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