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Preparation process of sodium bentonite

A technology of sodium bentonite and preparation process, which is applied in the field of sodium bentonite preparation technology, and can solve problems such as not being able to meet demands

Inactive Publication Date: 2021-02-05
芜湖恒杰膨润土科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sodiumization of bentonite adopts the method of inoculation with bentonite covering sodium salt. Such sodiumization effect can no longer meet the demand, and a preparation process with better sodiumization effect is needed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0016] The present embodiment provides a preparation process of sodium bentonite, which includes the following steps:

[0017] Step 1: Mining bentonite raw ore, soaking the raw ore for 24 hours, performing pre-sedimentation sorting, removing impurities such as sediment, and then filtering the raw ore to remove water, and then pulverizing it into bentonite powder;

[0018] Step 2: Spread a layer of bentonite powder on the ground, sprinkle with a layer of sodium salt, then spread a layer of bentonite powder, and let it stand for 12 hours;

[0019] Step 3: Collect the bentonite and sodium salt mixed powder in step 2 together, and then make mud, separate after mud making, remove the settled i...

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PUM

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Abstract

The invention provides a preparation process of sodium bentonite, which comprises the following steps of soaking raw ore, screening, removing impurities, ensuring the purity, pulverizing into bentonite powder, paving on the ground, spreading a layer of sodium salt, covering with a layer of bentonite powder, mixing, preparing slurry, separating to remove settled impurities, adding sodium salt intothe slurry, and carrying out sodium modification, separating to remove magnesium salt and calcium salt impurities, drying the slurry to obtain fine soil, and drying and crushing the fine soil to obtain the finished product sodium bentonite, thereby carrying out primary inoculation sodium modification and secondary slurry sodium modification, having favorable sodium modification effect, and ensuring the purity by three impurity removal steps.

Description

technical field [0001] The invention relates to the field of bentonite preparation, in particular to a preparation process of sodium-based bentonite. Background technique [0002] Bentonite is a non-metallic mineral with montmorillonite as the main mineral component. The structure of montmorillonite is a 2:1 crystal structure composed of two silicon-oxygen tetrahedra sandwiching a layer of aluminum-oxygen octahedron. Due to the presence of certain cations in the layered structure formed by the montmorillonite unit cell, such as Cu, Mg, Na, K, etc., the interaction between these cations and the montmorillonite unit cell is very unstable, and they are easily exchanged by other cations, so they have relatively Good ion exchange. The distribution of calcium-based bentonite is much wider than that of sodium-based bentonite. Therefore, in addition to strengthening the search for sodium-based bentonite, it is necessary to modify calcium-based bentonite to make it into sodium-based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40
CPCC01B33/40
Inventor 汪元良
Owner 芜湖恒杰膨润土科技有限公司