Preparation method and product of calcium oxide desiccant

A technology of desiccant and calcium oxide, which is applied in the direction of chemical instruments and methods, separation methods, alkali metal oxides/hydroxides, etc., to achieve excellent activity, enhance connectivity, and avoid clogging of the water spray gun nozzle

Active Publication Date: 2018-11-30
HANGZHOU HOMESONG PACKGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies of the prior art and provide a method for preparing calcium oxide desiccant. By optimizing the composition and ratio of raw materials, the calcium oxide desiccant can form a firm three-dimensional network structure and extremely rich micropores. and pores, but also has excellent activity, water absorption capacity and water fixation capacity, which can fully meet the needs of camera lenses for long-term and efficient drying

Method used

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  • Preparation method and product of calcium oxide desiccant
  • Preparation method and product of calcium oxide desiccant
  • Preparation method and product of calcium oxide desiccant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) 66kg calcium hydroxide, 33kg activated alumina, 0.5kg lignin, and 0.5kg glass fiber are added to the powder mixer and stirred for 1h; then 20wt% of 0.5kg carboxymethylcellulose and 2kg water are mixed Add the carboxymethyl cellulose solution into the powder mixer and continue to stir for 0.3h; open the discharge port of the powder mixer to discharge, and keep 1 / 20 of the total amount of raw materials in the powder mixer.

[0047] (2) After the powder mixing is completed, add the mixed powder into the ball pan for granulation.

[0048] (3) After the granulation is completed, put the formed granules into the vibrating sieve for sieving; the vibrating sieve has a three-layer sieving structure, the top sieves out the over-standard particles, which are used as raw materials for powdering, and the middle sieves out The most are semi-finished granules, which are used to add to the polishing machine for polishing, and the sieved bottom layer is the unqualified granules, whi...

Embodiment 2

[0055] (1) 76kg calcium carbonate, 23kg activated alumina, 0.5kg lignin, and 0.5kg glass fiber are added to the powder mixer and stirred for 1 hour, then 20wt% carboxymethyl cellulose and 2kg water are mixed with 0.5kg carboxymethyl cellulose Add the methylcellulose solution into the powder mixer and continue to stir for 0.3h; open the discharge port of the powder mixer to discharge, and keep 1 / 20 of the total amount of raw materials in the powder mixer.

[0056] (2) After the powder mixing is completed, add the mixed powder into the ball pan for granulation.

[0057] (3) After the granulation is completed, put the formed granules into the vibrating sieve for sieving; the vibrating sieve has a three-layer sieving structure, the top sieves out the over-standard particles, which are used as raw materials for powdering, and the middle sieves out The most are semi-finished granules, which are used to add to the polishing machine for polishing, and the sieved bottom layer is the un...

Embodiment 3

[0064] (1) Add 33kg calcium hydroxide, 38kg calcium carbonate, 28kg activated alumina, 0.5kg lignin, and 0.5kg glass fiber into the powder mixer and stir for 1 hour; then prepare 0.5kg carboxymethyl cellulose and 2kg water Add the 20wt% carboxymethyl cellulose solution into the powder mixer and continue to stir for 0.3h; open the discharge port of the powder mixer to discharge, and keep 1 / 20 of the total amount of raw materials in the powder mixer Mix the powder.

[0065] (2) After the powder mixing is completed, add the mixed powder into the ball pan for granulation.

[0066] (3) After the granulation is completed, put the formed granules into the vibrating sieve for sieving; the vibrating sieve has a three-layer sieving structure, the top sieves out the over-standard particles, which are used as raw materials for powdering, and the middle sieves out The most are semi-finished granules, which are used to add to the polishing machine for polishing, and the sieved bottom layer...

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Abstract

The invention relates to a preparation method and a product of a calcium oxide desiccant, the preparation method comprises stirring raw materials for mixing to obtain powder, granulating, forming, drying and roasting; the step of stirring the raw materials for mixing to obtain the powder includes: adding calcium carbonate and/or calcium hydroxide, alumina, lignin and glass fiber into a powder mixer for stirring for mixing to obtain the powder, and adding a carboxymethyl cellulose solution prepared from the carboxymethyl cellulose and water into the powder mixer for continuously stirring. By optimizing the composition and proportion of the raw materials, the calcium oxide desiccant form a three-dimensional network structure, has excellent activity, water absorption ability and water fixation ability, and can fully meet the needs of long-term and efficient drying of a camera lens.

Description

technical field [0001] The invention relates to the field of desiccant manufacture, in particular to a preparation method and product of a calcium oxide desiccant. Background technique [0002] Desiccant refers to a substance that can remove part of the moisture in a humid substance. Moisture control is closely related to product yield. In terms of food, under proper temperature and humidity, bacteria and mold in food will multiply at an alarming rate, causing food to spoil, causing dampness and discoloration . Electronic products can also cause metal oxidation due to high humidity, resulting in poor contact and even component damage. [0003] The desiccant came into being in order to avoid the occurrence of defective products caused by excess moisture. The types of desiccants are divided into physical adsorption desiccants and chemical adsorption desiccants according to their drying principles. The physical adsorption desiccant takes molecular sieve as an example, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30B01D53/26
CPCB01D53/261B01D2257/80B01J20/0248B01J20/041B01J20/043B01J20/10B01J20/24B01J20/28014B01J20/28054
Inventor 张红军
Owner HANGZHOU HOMESONG PACKGING MATERIAL
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