CN102294221A - Preparation method of attapulgite-based adsorption drying agent suitable for high humidity environment - Google Patents
Preparation method of attapulgite-based adsorption drying agent suitable for high humidity environment Download PDFInfo
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- CN102294221A CN102294221A CN201110176552A CN201110176552A CN102294221A CN 102294221 A CN102294221 A CN 102294221A CN 201110176552 A CN201110176552 A CN 201110176552A CN 201110176552 A CN201110176552 A CN 201110176552A CN 102294221 A CN102294221 A CN 102294221A
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- attapulgite
- calcium chloride
- silochrom
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- recessed soil
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Abstract
The invention discloses a preparation method of an attapulgite-based adsorption drying agent suitable for a high humidity environment. The preparation method of the attapulgite-based adsorption drying agent comprises the following steps of 1, collecting attapulgite, silochrom and calcium chloride according to a ratio of 6: (2.5 to 3): (1 to 1.5), 2, crushing respectively collected attapulgite and silochrom to more than 200 meshes and adding the powder into a stirrer to mix them fully, and 3, dissolving calcium chloride in a certain amount of water, adding uniformly the calcium chloride solution into the mixed material of attapulgite and silochrom with stirring, preparing into particles with different particle sizes or shapes through a granulator or an extruder according to demands, and drying in air, and 4, placing the particles obtained by the step 3 into a rotary calcination furnace to carry out calcination at a temperature of 300 to 400 DEG C for 1 to 2 hours, cooling in a closed environment and carrying out packaging in a vacuum. In the invention, the attapulgite-based adsorption drying agent suitable for a high humidity environment is prepared from attapulgite as a matrix through addition of silochrom and adjustment of a proportion of calcium chloride.
Description
Technical field
The present invention is a kind of natural minerals and compound method for preparing new material of other inorganic material utilized, and belongs to the inorganic material application, is specifically related to prepare with recessed soil and silica gel and calcium chloride the method for adsorption desiccant.
Technical background
Adsorption desiccant is a kind of deicer that absorbs moisture from environment, can be widely used in the protection against the tide of products such as food, precise electronic, container and auto parts machinery.In recent years, along with the enhancing of people's environmental consciousness, be that the drier of base-material production is more and more favored with silicate mineral bentonite, recessed soil etc.
Existing recessed native adsorption desiccant mainly is prepared from by recessed soil interpolation calcium chloride and an amount of expanding agent at present, by the high-hygroscopicity inorganic salts---and the interpolation of calcium chloride improves its moisture absorption capacity and moisture absorption speed.Higher or absorption can form solution because of the calcium chloride deliquescence when reaching capacity but this class drier is at ambient humidity, " guttation " phenomenon appears, not only directly influence the adsorption dry effect, and the excessive object that is dried is produced of solution stain, particularly because the existence even the etch product of chlorion have seriously limited its range of application.
Summary of the invention
The objective of the invention is to: the preparation method of a kind of suitable high humidity environment with recessed soil matrix adsorption desiccant is provided, this preparation method introduces silica gel as lock water material, and by the proportioning of effective adjusting with calcium chloride, adjust preparation process condition, preparation is applicable to the recessed soil matrix adsorption desiccant of high humidity environment.
Technical solution of the present invention is that the preparation method of this recessed soil matrix adsorption desiccant may further comprise the steps:
Step 1: get recessed soil, silochrom, calcium chloride respectively according to mass ratio 6:2.5-3:1-1.5;
Step 2: recessed soil and silochrom are crushed to respectively more than 200 orders, add in the agitator and fully mix;
Step 3: calcium chloride is dissolved in a certain amount of water, under agitation calcium chloride solution is evenly added in recessed soil, the silica gel compound, be prepared into the particle of different-grain diameter or shape as required with comminutor or extruder, dry naturally;
Step 4: step 3 gained particle places rotary calciner at 300-400
0C cured 1-2 hour, airtight cooling final vacuum packing.
Wherein, the aperture of silochrom is 8.0-12.0nm, pore volume 〉=0.78ml/g, water absorption 〉=90%.
Advantage of the present invention:
1. raw material is all the inorganic material that is easy to get, and makes full use of the mutual synergy of various storerooms.
2. preparation technology, equipment are simple, except that dust control, do not have other three waste discharges.
3. owing to adopt nontoxic raw material, prepared product is safe and reliable.
The specific embodiment
Further specify technical solution of the present invention below in conjunction with specific embodiment, these embodiment can not be interpreted as it is restriction to technical scheme.
Embodiment 1: prepare recessed soil matrix adsorption desiccant according to following steps
Step 1: get recessed native 6 kilograms, 3 kilograms of silochroms, 1 kilogram in calcium chloride respectively according to mass ratio 6:3:1; Wherein, the aperture of silochrom is 8.0-12.0nm, pore volume 〉=0.78ml/g, water absorption 〉=90%;
Step 2: recessed soil and silochrom are crushed to 325 orders, 200 orders respectively, add in the agitator and fully mix;
Step 3: calcium chloride is dissolved in 2 kg of water, under agitation calcium chloride solution is evenly added in recessed soil, the silica gel compound, make the spherical particle of diameter 4mm, dry naturally with comminutor;
Step 4: step 3 gained particle places rotary calciner 300
0C cured 2 hours, airtight cooling final vacuum packing.
Embodiment 2: prepare recessed soil matrix adsorption desiccant according to following steps
Step 1: get recessed native 6 kilograms, 2.5 kilograms of silochroms, 1.5 kilograms in calcium chloride respectively according to mass ratio 6:2.5:1.5; Wherein, the aperture of silochrom is 8.0-12.0nm, pore volume 〉=0.78ml/g, water absorption 〉=90%;
Step 2: recessed soil and silochrom are crushed to 250 orders respectively, add in the agitator and fully mix;
Step 3: calcium chloride is dissolved in 2.5 kg of water, under agitation calcium chloride solution is evenly added in recessed soil, the silica gel compound, make the cylindrical particle of diameter 3mm, dry naturally with extruder;
Step 4: step 3 gained particle places rotary calciner 350
0C cured 1.5 hours, airtight cooling final vacuum packing.
Embodiment 3: prepare recessed soil matrix adsorption desiccant according to following steps
Step 1: get recessed native 6 kilograms, 2.8 kilograms of silochroms, 1.2 kilograms in calcium chloride respectively according to mass ratio 6:2.8:1.2; Wherein, the aperture of silochrom is 8.0-12.0nm, pore volume 〉=0.78ml/g, water absorption 〉=90%;
Step 2: recessed soil and silochrom are crushed to 200 orders, 325 orders respectively, add in the agitator and fully mix;
Step 3: calcium chloride is dissolved in 3 kg of water, under agitation calcium chloride solution is evenly added in recessed soil, the silica gel compound, make the spherical particle of diameter 2.5mm, dry naturally with comminutor;
Step 4: step 3 gained particle places rotary calciner 400
0C cured 1 hour, airtight cooling final vacuum packing.
The recessed soil matrix adsorption desiccant of embodiment 1-3 gained is under relative humidity 75 % conditions, and 24 h hydroscopicities are 67.62 %, no guttation, and it is good that mechanical strength keeps.
Claims (2)
1. be fit to the preparation method of high humidity environment, it is characterized in that the preparation method of this recessed soil matrix adsorption desiccant may further comprise the steps with recessed soil matrix adsorption desiccant:
Step 1: get recessed soil, silochrom, calcium chloride respectively according to mass ratio 6:2.5-3:1-1.5;
Step 2: recessed soil and silochrom are crushed to respectively more than 200 orders, add in the agitator and fully mix;
Step 3: calcium chloride is dissolved in a certain amount of water, under agitation calcium chloride solution is evenly added in recessed soil, the silica gel compound, be prepared into the particle of different-grain diameter or shape as required with comminutor or extruder, dry naturally;
Step 4: step 3 gained particle places rotary calciner at 300-400
0C cured 1-2 hour, airtight cooling final vacuum packing.
2. suitable high humidity environment according to claim 1 is with the preparation method of recessed soil matrix adsorption desiccant, and it is characterized in that: the aperture of silochrom is 8.0-12.0nm, pore volume 〉=0.78ml/g, water absorption 〉=90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176552A CN102294221A (en) | 2011-06-28 | 2011-06-28 | Preparation method of attapulgite-based adsorption drying agent suitable for high humidity environment |
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| CN201110176552A CN102294221A (en) | 2011-06-28 | 2011-06-28 | Preparation method of attapulgite-based adsorption drying agent suitable for high humidity environment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383794A (en) * | 2014-11-19 | 2015-03-04 | 东莞市青麦田数码科技有限公司 | Chemical drying agent and preparation method thereof |
| CN105498684A (en) * | 2015-11-30 | 2016-04-20 | 马鞍山泓宇材料科技有限公司 | Dying agent for hollow glass |
| CN105771567A (en) * | 2016-04-09 | 2016-07-20 | 佛山市恒学科技服务有限公司 | Efficient drying agent and preparing method thereof |
| CN110756158A (en) * | 2019-09-30 | 2020-02-07 | 广州供电局有限公司 | Composite drying agent and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559665A (en) * | 2004-03-09 | 2005-01-05 | 杜建中 | Concave-convex rod clay composite drying agent |
| CN1631512A (en) * | 2004-11-18 | 2005-06-29 | 盱眙博图凹土高新技术开发有限公司 | Attapulgite clay desiccant specified for hollow glass |
| CN1844382A (en) * | 2006-04-17 | 2006-10-11 | 江南大学 | Method for preparing immobilized lipase attapulgite clay |
-
2011
- 2011-06-28 CN CN201110176552A patent/CN102294221A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559665A (en) * | 2004-03-09 | 2005-01-05 | 杜建中 | Concave-convex rod clay composite drying agent |
| CN1631512A (en) * | 2004-11-18 | 2005-06-29 | 盱眙博图凹土高新技术开发有限公司 | Attapulgite clay desiccant specified for hollow glass |
| CN1844382A (en) * | 2006-04-17 | 2006-10-11 | 江南大学 | Method for preparing immobilized lipase attapulgite clay |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383794A (en) * | 2014-11-19 | 2015-03-04 | 东莞市青麦田数码科技有限公司 | Chemical drying agent and preparation method thereof |
| CN105498684A (en) * | 2015-11-30 | 2016-04-20 | 马鞍山泓宇材料科技有限公司 | Dying agent for hollow glass |
| CN105771567A (en) * | 2016-04-09 | 2016-07-20 | 佛山市恒学科技服务有限公司 | Efficient drying agent and preparing method thereof |
| CN110756158A (en) * | 2019-09-30 | 2020-02-07 | 广州供电局有限公司 | Composite drying agent and preparation method and application thereof |
| CN110756158B (en) * | 2019-09-30 | 2023-01-20 | 广东电网有限责任公司广州供电局 | Composite drying agent and preparation method and application thereof |
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Application publication date: 20111228 |