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Attapulgite clay treatment process

A technology of attapulgite clay and treatment process, which is applied in the directions of inorganic chemistry, non-metallic elements, silicon compounds, etc., and can solve the problems of affecting the properties and functions of attapulgite, unscientific purification of attapulgite, and disintegration of structural materials. , to achieve the effect of improving modification activity, not easy to disintegrate, and strong viscosity

Inactive Publication Date: 2017-06-30
明光市外泰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent discloses a variety of structural materials with attapulgite as the coating. In the prior art, the modification operation of attapulgite often affects the performance of attapulgite due to reasons such as unscientific purification and incomplete modification. Performance and function, the viscosity is not enough, and it is easy to cause disintegration when made into a coating or other structural materials

Method used

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Examples

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Effect test

Embodiment 1

[0023] An attapulgite clay treatment process provided in this embodiment, the attapulgite clay treatment process comprises the following steps:

[0024] (1) Purification of attapulgite: crush attapulgite, sieve until the particle size is 100 mesh, add the sieved attapulgite to clean water 12 times the weight of attapulgite, stir evenly, soak for 25 Hours later, centrifuge for 20min, the rotating speed of the centrifuge is 2500r / min, after centrifugation, obtain the semi-finished product of attapulgite through filtering and drying steps;

[0025] (2) Modification of attapulgite: use sodium bicarbonate to configure a sodium bicarbonate solution with a concentration of 3.0%, put the semi-finished attapulgite into the sodium bicarbonate solution, stir and heat, and The stirring speed is 2000r / min, and the heating temperature is maintained at 60°C; during the stirring process, sodium bicarbonate and sodium hydroxide particles are added while stirring, and the bicarbonate added to t...

Embodiment 2

[0033] An attapulgite clay treatment process provided in this embodiment, the attapulgite clay treatment process comprises the following steps:

[0034] (1) Purification of attapulgite: crush attapulgite, sieve until the particle size is 50 mesh, add the sieved attapulgite to clean water 20 times the weight of attapulgite, stir evenly, soak for 10 Hours later, centrifuge for 35min, the rotating speed of the centrifuge is 1500r / min, after centrifugation, obtain the semi-finished product of attapulgite through filtering and drying steps;

[0035] (2) Modification of attapulgite: use sodium bicarbonate to configure a sodium bicarbonate solution with a concentration of 4.0%, put the semi-finished attapulgite into the sodium bicarbonate solution, stir and heat, and The stirring speed is 1000r / min, and the heating temperature is maintained at 80°C; during the stirring process, sodium bicarbonate and sodium hydroxide particles are added while stirring, and the bicarbonate added to th...

Embodiment 3

[0043] An attapulgite clay treatment process provided in this embodiment, the attapulgite clay treatment process comprises the following steps:

[0044] (1) Purification of attapulgite: crush attapulgite, sieve until the particle size is 100 mesh, add the sieved attapulgite to clean water 12 times the weight of attapulgite, stir evenly, soak for 25 Hours later, centrifuge for 20min, the rotating speed of the centrifuge is 2500r / min, after centrifugation, obtain the semi-finished product of attapulgite through filtering and drying steps;

[0045] (2) Modification of attapulgite: use sodium bicarbonate to configure a sodium bicarbonate solution with a concentration of 3.0%, put the semi-finished attapulgite into the sodium bicarbonate solution, stir and heat, and The stirring speed is 2000r / min, and the heating temperature is maintained at 60°C; during the stirring process, sodium bicarbonate and sodium hydroxide particles are added while stirring, and the bicarbonate added to t...

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Abstract

The invention belongs to the technical field of sewage treatment, and provides an attapulgite clay treatment process which comprises the following steps: (1) purifying attapulgite, to be more specific, crushing and sieving the attapulgite, adding the sieved attapulgite into clean water, evenly stirring, soaking, centrifuging, after the centrifugation, filtering and drying to obtain an attapulgite semi-finished product; (2) modifying the attapulgite, to be more specific, putting the attapulgite semi-finished product into a sodium bicarbonate solution, stirring and heating; and in the stirring process, adding sodium bicarbonate and sodium hydroxide particles while stirring; and (3) processing the attapulgite, to be more specific, filtering , drying and crushing the attapulgite obtained by the step (2) to obtain the modified attapulgite. The attapulgite clay treatment process can improve the adsorption performance, the decoloration rate, the catalytic effect, the specific surface area, the porosity and the viscosity of the attapulgite clay.

Description

technical field [0001] The invention belongs to the technical field of attapulgite processing, in particular to an attapulgite clay treatment process. Background technique [0002] Attapulgite clay refers to a clay mineral with attapulgite as the main component. Attapulgite is a crystalline hydrated magnesium aluminum silicate mineral, which has a unique layer chain structure feature, and there is a lattice replacement in its structure, and the help crystal contains a variable amount of Na + , Ca 2+ , Fe 3+ and Al 3+ , The crystals are needle-like, fibrous or fibrous aggregates. It has an intermediate structure between a chain structure and a layered structure. When it is not cross-linked, its strength is low, it is easy to break, and it has no elasticity, and its adsorption and cohesion are low. [0003] As a natural material, attapulgite clay has the advantages of cheap raw materials, abundant resources and large specific surface area. Attapulgite clay has a special f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40
CPCC01B33/40
Inventor 叶家珍
Owner 明光市外泰高分子材料有限公司
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