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Preparation method of high-viscosity modified attapulgite

A technology for modifying attapulgite and attapulgite, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of limiting the performance of attapulgite colloids, achieve low production cost, high bonding strength, The effect of little environmental pollution

Inactive Publication Date: 2017-07-21
MINGGUANG GUOXING ATTAPULGITE CLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The good colloidal properties of attapulgite are one of the most important properties in the application of attapulgite. However, the crystal bundles formed by the rod crystal fibers in natural attapulgite minerals are very dense and firm, and it is difficult to disperse even particles that are crushed to a size below 0.1 mm. Evenly dispersed in the medium, which greatly limits the performance of attapulgite colloids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of high-viscosity modified attapulgite, comprising the steps of:

[0025] (1), select natural attapulgite ore as raw material, and crush natural attapulgite ore to obtain natural attapulgite powder;

[0026] (2) Prepare a certain concentration of dispersant aqueous solution, add the natural attapulgite powder in step (1) under constant temperature stirring, control the solid-liquid ratio to 1:25, stir at a speed of 200r / min for 10min, and obtain attapulgite suspension For turbid liquid, place the attapulgite suspension in ultrasonic vibration for 30 minutes, so that the attapulgite particles in the attapulgite suspension are fully hydrated and dispersed to obtain the attapulgite suspension;

[0027] (3), adding an acid solution with a concentration of 5% to the attapulgite suspension obtained in step (2), heating to 40°C, heating and stirring for 1 hour, filtering, drying, and obtaining a semi-finished product of modified attapulgite powder;

[002...

Embodiment 2

[0038] A preparation method of high-viscosity modified attapulgite, comprising the steps of:

[0039] (1), select natural attapulgite ore as raw material, and crush natural attapulgite ore to obtain natural attapulgite powder;

[0040] (2) Prepare a certain concentration of dispersant aqueous solution, add the natural attapulgite powder in step (1) under constant temperature stirring, control the solid-liquid ratio to 1:30, stir at a speed of 300r / min for 30min, and obtain attapulgite suspension For the turbid liquid, place the attapulgite suspension in ultrasonic vibration for 60 minutes, so that the attapulgite particles in the attapulgite suspension are fully hydrated and dispersed to obtain the attapulgite suspension;

[0041] (3), adding an acid solution with a concentration of 10% to the attapulgite suspension obtained in step (2), heating to 45° C., heating and stirring for 2 hours, filtering, drying, and obtaining a semi-finished product of modified attapulgite powder;...

Embodiment 3

[0052] A kind of preparation method of high viscosity modified attapulgite, is characterized in that, comprises the steps:

[0053] (1), select natural attapulgite ore as raw material, and crush natural attapulgite ore to obtain natural attapulgite powder;

[0054] (2) Prepare a certain concentration of dispersant aqueous solution, add the natural attapulgite powder in step (1) under constant temperature stirring, control the solid-liquid ratio to 1:27, stir at a speed of 250r / min for 20min, and obtain attapulgite suspension For turbid liquid, place the attapulgite suspension in ultrasonic vibration for 45 minutes, so that the attapulgite particles in the attapulgite suspension are fully hydrated and dispersed to obtain the attapulgite suspension;

[0055] (3), adding an acid solution with a concentration of 7% to the attapulgite suspension obtained in step (2), heating to 42°C, heating and stirring for 1.5h, filtering, drying, and obtaining a semi-finished product of modified...

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PUM

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Abstract

The invention discloses a preparation method of high-viscosity modified attapulgite, relates to the technical field of attapulgite processing, and comprises the following steps: (1), selecting natural attapulgite ore as a raw material and pulverizing to obtain natural attapulgite powder; 2), configuring the attapulgite suspension; (3), adding an acid solution with a concentration of 5-10% to the attapulgite suspension obtained in step (2) to obtain a semi-finished product of modified attapulgite powder; (4), The modified attapulgite powder semi-finished product is extruded into the cold storage through an extruder to obtain the modified attapulgite powder; (5) Blow hot air into the finished modified attapulgite powder, and then spray it into the churning powder Thickener and viscosifier, high viscosity modified attapulgite is prepared by spray drying. The invention uses attapulgite powder as a raw material, has low production cost and high efficiency, and the obtained high-viscosity modified attapulgite has high bonding strength and good durability.

Description

technical field [0001] The invention relates to the technical field of attapulgite processing, in particular to a preparation method of high-viscosity modified attapulgite. Background technique [0002] Attapulgite is a magnesium-rich silicate whose crystal structure belongs to the 2:1 layer chain clay mineral. The special structure and properties of attapulgite endow it with high application value, making it widely used in water purification, binder, pesticide carrier, molecular sieve, desiccant, adsorbent, coating, drilling mud, etc. The good colloidal properties of attapulgite are one of the most important properties in the application of attapulgite. However, the crystal bundles formed by the rod crystal fibers in natural attapulgite minerals are very dense and firm, and it is difficult to disperse even particles that are crushed to a size below 0.1 mm. Evenly dispersed in the medium, which greatly limits the performance of attapulgite colloids. Viscosity is an importa...

Claims

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Application Information

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IPC IPC(8): C01B33/40
CPCC01B33/40C01P2006/22
Inventor 李振国
Owner MINGGUANG GUOXING ATTAPULGITE CLAY
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