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Method of using low-quality short fiber sepiolite for preparing high-performance adsorbing material

An adsorption material, sepiolite technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low treatment process efficiency, insufficient development and utilization of sepiolite adsorption performance, etc., to achieve significant adsorption performance and excellent adsorption performance , the effect of reducing the amount of acid

Active Publication Date: 2016-05-25
苏州中材非金属矿工业设计研究院有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the low efficiency of the treatment process in the current processing of sepiolite ore and the insufficient development and utilization of sepiolite adsorption performance, the purpose of this invention is to provide a method for preparing high-performance adsorption materials with low-quality short-fiber sepiolite. It can significantly increase the pore volume, specific surface area, surface activity, etc. of sepiolite, so as to truly exert the excellent adsorption performance of sepiolite

Method used

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  • Method of using low-quality short fiber sepiolite for preparing high-performance adsorbing material
  • Method of using low-quality short fiber sepiolite for preparing high-performance adsorbing material
  • Method of using low-quality short fiber sepiolite for preparing high-performance adsorbing material

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Embodiment 1

[0035]Example 1: A method for preparing high-performance adsorption material with low-quality short-fiber sepiolite

[0036] The method comprises the following steps, and the process flow chart is referring to the appended figure 1 Shown:

[0037] (1) Pre-purification of low-quality short-fiber sepiolite raw ore: prepare low-quality short-fiber sepiolite raw ore into pulp with a mass concentration of 8-15%, and then pass the pulp through a vibrating screen with a sieve hole of 0.1mm, After a φ75 cyclone and a horizontal centrifuge, the sepiolite concentrate with a mass purity of 80% is purified, and the mass concentration of the pulp becomes 2.6% at this time; wherein, the sepiolite in the low-quality short-fiber sepiolite raw ore The mass percentage of sepiolite is less than 40%, and the fiber length of sepiolite is less than 1.5 μm;

[0038] (2) After the step (1) is completed, the ore pulp is processed by a superconducting magnetic separator with a high magnetic field str...

Embodiment 2

[0044] Example 2: A method for preparing high-performance adsorption material with low-quality short-fiber sepiolite

[0045] The method comprises the steps of:

[0046] (1) Pre-purification of low-quality short-fiber sepiolite raw ore: prepare low-quality short-fiber sepiolite raw ore into pulp with a mass concentration of 8-15%, and then pass the pulp through a vibrating screen with a sieve hole of 0.1mm, After a φ75 cyclone and a horizontal centrifuge, the sepiolite concentrate is purified to a mass purity of 85%, and the mass concentration of the pulp becomes 5% at this time; wherein, the sea foam in the low-quality short-fiber sepiolite ore The mass percentage of sepiolite is less than 40%, and the fiber length of sepiolite is less than 1.5 μm;

[0047] (2) After the step (1) is completed, the ore pulp is processed by a superconducting magnetic separator with a high magnetic field strength, the magnetic field strength is 4T, the magnetic substances in the ore pulp are re...

Embodiment 3

[0053] Example 3: A method for preparing high-performance adsorption material with low-quality short-fiber sepiolite

[0054] The method comprises the steps of:

[0055] (1) Pre-purification of low-quality short-fiber sepiolite raw ore: prepare low-quality short-fiber sepiolite raw ore into pulp with a mass concentration of 8-15%, and then pass the pulp through a vibrating screen with a sieve hole of 0.1mm, After a φ75 cyclone and a horizontal centrifuge, the sepiolite concentrate is purified to a mass purity of 85%, and the mass concentration of the pulp becomes 2% at this time; wherein, the sepiolite in the low-quality short fiber sepiolite raw The mass percentage of sepiolite is less than 40%, and the fiber length of sepiolite is less than 1.5 μm;

[0056] (2) After the step (1) is completed, the ore pulp is processed by a superconducting magnetic separator with a high magnetic field strength, the magnetic field strength is 3T, the magnetic substances in the ore pulp are r...

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Abstract

The invention discloses a method of using low-quality short fiber sepiolite for preparing a high-performance adsorbing material. The method is characterized by including the following steps that 1, low-quality short fiber sepiolite raw ore is purified to be ore concentrate, wherein the mass concentration of ore pulp is changed to be 2-5% at the moment; 2, the ore pulp is treated through a superconductivity magnetic separator, the intensity of a magnetic field is 3-5.5 T, and a filter cake is obtained through precipitating, filter pressing and dehydrating; 3, a double-screw mixer is adopted for mashing the filter cake, an acid agent is added, and the acid agent accounts for 2-10% of the solid content of the filter cake according to the addition quantity of the acid agent; 4, a material is fed into a microwave field to be kept for 5-30 minutes, wherein the microwave frequency is 2000 MHz-8000MHz; 5, the material is subjected to spraying, suction filtration and washing; 6, a pore-forming material is added into the material and is a mixture of active carbon and water glass, the mixture and the material are subjected to an ageing reaction and prepared into particles through granulation, and the high-performance adsorbing material is prepared through dehydrating and drying. The specific surface area and pore volume of the sepiolite treated through the method are increased obviously, and compared with a common treatment method, the adsorbing performance of the treated sepiolite is improved by one or more times.

Description

technical field [0001] The invention relates to the technical field of surface charge sorting, surface modification, pore cleaning and microscopic pore expansion based on the mineral properties of low-quality short-fiber sepiolite, in particular to a high-performance The method of adsorbing materials, through the treatment of this technology, the pore volume, specific surface area and surface activity of sepiolite can be increased, so as to achieve the purpose of greatly improving the adsorption capacity of sepiolite mineral materials. Background technique [0002] As we all know, sepiolite is a fibrous silicate mineral with layer chain structure, which theoretically has abundant pores, large specific surface area and certain adsorption performance. In recent years, how to use the adsorption of sepiolite to adsorb and purify air has become a research hotspot. However, in fact, during the mineralization process, these pores are filled with impurities, and the surface becomes...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/10B01J20/20B01J2220/42B01J2220/4806
Inventor 谭建杰张韬谢彦贺洋彭少炼程丽昆刘卫湘郭志伟于阳辉程卫泉
Owner 苏州中材非金属矿工业设计研究院有限公司
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