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Process for improving viscous of attapulgite by pure physical method rapidly and high-effectively

A technology of attapulgite and attapulgite, which is applied in the directions of silicon compounds, chemical instruments and methods, inorganic chemistry, etc., to achieve the effect of simple and easy processing technology

Inactive Publication Date: 2008-07-23
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, increasing the viscosity of attapulgite is mainly achieved by adding activators or viscosifiers to modify and cooperate with corresponding physical treatment methods. Purely physical methods have not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] 1. The viscosity of the attapulgite newly mined from the mining area was detected to be 472mPa·s, and the attapulgite was soaked in clean water for 24 hours;

[0011] 2, get the attapulgite soaked in step 1 and extrude it into thin slices through an extruder, the thickness of the thin slice is 1 mm, and the viscosity of the clay after extrusion is measured as 2040mPa·s; Proportionally mixed, diluted, put into the freezer for quick freezing for 2 hours, the temperature of the freezer is -18°C, after freezing, take it out and bake it in the oven for 1 hour, the oven temperature is 50°C;

[0012] 3. Mix the attapulgite obtained in step 2 with clear water in a ratio of 4: 1 by weight, enter the extruder and extrude into thin slices, the thickness of the thin slice is 1 mm, and measure its viscosity to be 3100mPa·s; after extrusion, the attapulgite and clear water are mixed by weight Mix well at a ratio of 2:1, dilute, put into the freezer for quick freezing for 2 hours, the...

example 2

[0015] 1. The viscosity of the attapulgite that has been piled up and weathered for one year is 1800mPa·s, and the attapulgite is soaked in clean water for 24 hours;

[0016] 2, get the attapulgite soaked in step 1 and extrude it into thin slices through an extruder, the thickness of the thin slice is 1 mm, and the viscosity of the clay after extrusion is measured as 2316mPa s; Proportionally mixed, diluted, put into the freezer for 2 hours, and the temperature of the freezer is -18°C. After freezing, take it out and bake it in the oven for 1 hour, and the oven temperature is 55°C;

[0017] 3. Mix the attapulgite obtained in step 2 with clear water in a ratio of 4: 1 by weight, enter the extruder and extrude into thin slices, the thickness of the thin slice is 1 mm, and measure its viscosity to be 3220mPa·s; after extrusion, the attapulgite and clear water are mixed by weight Mix well at a ratio of 2:1, dilute, put into the freezer for quick freezing for 2 hours, the temperatu...

example 3

[0020] 1. The viscosity of the attapulgite that has been heaped and weathered for 3 months is 741mPa·s, and the attapulgite is soaked in clean water for 24 hours;

[0021] 2. Get the attapulgite soaked in step 1 and extrude it into thin slices through an extruder. The thickness of the thin slice is 1 mm. Proportionally mixed, diluted, put into the freezer for 2 hours, the temperature of the freezer is -18°C, after freezing, take it out and bake it in the oven for 1 hour, the oven temperature is 60°C;

[0022] 3. Mix the attapulgite obtained in step 2 with clear water in a ratio of 4: 1 by weight, enter the extruder and extrude into thin slices, the thickness of the thin slice is 1 mm, and measure its viscosity to be 3020mPa·s; Mix well at a ratio of 2:1, dilute, put into the freezer for quick freezing for 2 hours, the temperature of the freezer is -18°C, after freezing, take it out and bake in the oven for 1 hour at 60°C;

[0023] 4. The attapulgite obtained in step 3 is pulv...

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Abstract

The invention discloses a technique for rapidly and efficiently improving the viscosity of attapulgite clay by adopting a pure physical method. The technique is suitable for all the attapulgite clay and the newly-mined attapulgite clay needs no mound for weathering and can be used for treatment. The key technical points are that: the attapulgite clay is soaked, repeatedly extruded for a second time, watered, frozen, heated and crashed to obtain a finished product. The viscosity of the attapulgite clay processed by the technology is 2-8 times of original soil.

Description

technical field [0001] The invention belongs to the field of deep processing of non-metallic ores, and in particular relates to a technique for rapidly and efficiently increasing the viscosity of attapulgite by using a purely physical method. Background technique [0002] Attapulgite (hereinafter referred to as 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40
Inventor 陈静金叶玲钱运华
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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