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Calcium base activation technique

A process, calcium-based technology, applied in the field of calcium-based bentonite activation process, can solve the problems of low decolorization rate and decreased activation

Inactive Publication Date: 2009-04-29
葛坤忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, the activator used is H 2 SO 4 , but its decolorization rate is not high, and with H 2 SO 4 With an increase in acid concentration after 15%, the activation decreased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] In the acid solution of a certain concentration, add bentonite mineral powder, start stirring and heat to a certain temperature. After the reaction is completed, the slurry is rinsed to a certain pH value, filtered with suction, dried, and crushed to 200 mesh to obtain the product.

[0007] In this experiment, HCl, the activation temperature is 95°C, the solid-liquid ratio is controlled to be 1:4, the activation acidity is 10%, and the activation time is 3h. After activation, rinse to pH=4-5, dry at 110°C, and then pulverize. The decolorization rate of the determined activated product is all above 99%, and the decolorization rate remains unchanged by continuing to prolong the activation time.

[0008] Using low-grade calcium-based bentonite as raw material and hydrochloric acid as activator, activated bentonite with a decolorization rate of more than 99% and an activity of 220-225 was prepared. Using hydrochloric acid as the activator, the activation effect is good, th...

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PUM

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Abstract

The invention discloses a calcium-based activation process, which uses low-grade calcium-based bentonite, takes hydrochloric acid as an activator, thus preparing the active bentonite with the decoloration rate more than 99 percent and the activity of 220-225. The wet-method activation process takes the hydrochloric acid as the activator, has good activation effect, stable quality of the product and is easy to be operated.

Description

technical field [0001] The invention relates to a calcium-based activation process, in particular to a calcium-based bentonite activation process. technical background [0002] my country is rich in bentonite resources, the reserves occupy the second place in the world. Activated bentonite is a white or off-white powder with a microporous network structure and a large specific surface area, and has strong adsorption. Activated bentonite is widely used, it can be used in petroleum refining, decolorization of lubricating oil and animal and vegetable oil, etc. Granular activated bentonite can also be used as catalyst for reforming, isomerization and disproportionation of aromatic hydrocarbons. Calcium-based bentonite has never been further processed and has been used in the metallurgical industry. The mineral powder has a low content of montmorillonite, about 50-60%, and belongs to low-grade calcium-based bentonite. [0003] Currently, the activator used is H 2 SO 4 , but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30
Inventor 葛坤忠
Owner 葛坤忠
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