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Active argil and preparation method thereof

A technology of activated clay and bentonite, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of difficult industrial production, expensive microwave equipment, high microwave power, etc., and achieve simple equipment and good acidification reaction effect , the effect of low production cost

Active Publication Date: 2014-05-14
广西润兴新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the inventive method, the microwave equipment is relatively expensive, the microwave power is also large, the microwave time is long, the production cost is high, and it is difficult to realize industrialized production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 adopts the inventive method to prepare activated clay

[0042] The bentonite raw ore is dried in the air, and the moisture content is less than 10%. It is crushed to a particle size of 1 to 5mm, and 250Kg is added to a mixed acid (20wt% H 2 SO 4 , saturated C 2 h 2 o 4 According to the volume ratio of 5: 1), after mixing and rolling in the wheel mill for 25min (the moisture content of the material is controlled to be 22 to 25wt% during the rolling process), add 2.50Kg of reducing agent Na 2 SO 3 , after rolling for 5min (the moisture content of the control material in the rolling process is 22~25wt%), add 12.5KgCa(OH) 2 , added in batches until the pH value of the mixed material is adjusted to 5-6, the resulting mixed material is dried at 95°C until the moisture content is 98%. According to the test of "HGT2569-94 activated clay", the activity of the prepared activated clay is 225, and the decolorization rate is 93%.

Embodiment 2

[0043] Embodiment 2 adopts the inventive method to prepare activated clay

[0044] Get the bentonite raw ore powder 250Kg of particle diameter 1~5mm, add mixed acid (20wt% H 2 SO 4 , concentration of 37wt% HCl, saturated C 2 h 2 o 4 According to the volume ratio 5: 5: 1), after mixing and rolling in the wheel mill for 25 minutes (the moisture content of the material is controlled to be 22 to 25wt% during the rolling process), add 250Kg of reducing agent Na 2 S 2 o 4 2H 2 0, after rolling for 5min (moisture content of control material during rolling is 22~25wt%), add 10.0KgCa(OH) 2 , added in batches until the pH value of the mixed material is adjusted to 5-6, the resulting mixed material is dried at 95°C until the moisture content is 98%. According to the test of "HGT2569-94 activated clay", the activity of the prepared activated clay is 238, and the decolorization rate is 98.5%.

Embodiment 3

[0045] Embodiment 3 adopts the inventive method to prepare activated clay

[0046] Get the bentonite raw ore powder 250Kg of particle diameter 1~5mm, add mixed acid (20wt% H 2 SO 4 , concentration of 37wt% HCl, saturated C 2 h 2 o 4 According to the volume ratio of 5:5:1), after mixing and rolling in the wheel mill for 25 minutes (the moisture content of the material is controlled to be 22 to 25wt% during the rolling process), add 2.50Kg of reducing agent Na 2 SO 3 、Na 2 S 2 o 3 , after rolling for 5min (moisture content of control material is 22~25wt% in rolling process), add 8.33Kg Ca(OH) 2 , added in batches until the pH value of the mixed material is adjusted to 5-6, the resulting mixed material is dried at 95°C until the moisture content is 98%. According to the test of "HGT2569-94 activated clay", the activity of the prepared activated clay is 233, and the decolorization rate is 94.2%.

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PUM

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Abstract

The invention relates to active argil and a preparation method thereof, which belong to the technical field of active argil. The technical problem to be solved of the invention is to provide a method for preparing active argil. The method has lower production cost. The method for preparing active argil disclosed by the invention comprises the following steps of: drying and smashing 12-20 parts of bentonite ore; adding 3-5 parts of acid; mixing uniformly; adjusting the pH value of a mixture to 5-6; drying; and smashing to obtain active argil.

Description

technical field [0001] The invention relates to activated clay and a preparation method thereof, belonging to the technical field of activated clay. Background technique [0002] Bentonite is a clay mineral with montmorillonite as its main component. It is widely used in casting, metallurgy, machinery, petroleum, chemical industry, environmental protection and other fields, so it is also called "universal soil". China is rich in bentonite resources, and its reserves rank first in the world, but most of the raw ore is calcium-based bentonite. Ca exchangeable between bentonite layers 2+ , Mg 2+ and other cations, in acidic solution, are replaced by H + Partial or full replacement can obtain hydrogen-based bentonite (activated clay) with larger specific surface area and stronger adsorption. [0003] Activated clay can be used in the refining of animal and vegetable oils; in the petroleum industry, it can be used for the refining, decolorization and purification of petroleum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40
Inventor 舒明勇刘光辉尹海英
Owner 广西润兴新材料有限公司
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