CN105585020A - Novel manufacturing technology of silica gel - Google Patents
Novel manufacturing technology of silica gel Download PDFInfo
- Publication number
- CN105585020A CN105585020A CN201410558292.0A CN201410558292A CN105585020A CN 105585020 A CN105585020 A CN 105585020A CN 201410558292 A CN201410558292 A CN 201410558292A CN 105585020 A CN105585020 A CN 105585020A
- Authority
- CN
- China
- Prior art keywords
- silica gel
- reaction tower
- reaction
- tank
- acid solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Silicon Compounds (AREA)
Abstract
The invention relates to a novel manufacturing technology of silica gel. According to the technological process, mixing, reaction and washing are carried out through an alkali preparation bath, an acid preparation tank, a reaction tower and a washing tank. The specific technological process comprises the following steps: a sodium silicate solution containing 30-40% of SiO2 is prepared through the alkali preparation bath on silica gel production equipment at the temperature of 30-35 DEG C; 15-25% of a sulfuric acid solution is prepared in the acid preparation tank at the temperature of 20-35 DEG C; the sulfuric acid solution is added into the reaction tower, the prepared sodium silicate solution is then added into the reaction tower, and silica gel particles are formed after the reaction; the silica gel particles undergo aging in an acid solution with pH value being 1-3 for 15-18 h; the silica gel particles enter the washing tank to be washed in water of 75-85 DEG C; the washed silica gel particles are soaked in ammonia for 6-8 h after washing; and finally, the silica gel particles undergo filter-pressing and drying so as to obtain super-macroporous silica gel.
Description
Technical field
The invention belongs to silica gel manufacturing technology field, be specifically related to a kind of novel manufacture craft of silica gel.
Background technology
The application of silica gel is day by day extensive; see with regard to current should being used for; the silica gel majority that plays dry and protective effect at industrial circles such as electronic product dehumidifyings is super big hole silica gel; super big hole silica gel has all obtained good application in applications such as filter aid, delustering agent, tactile flat agent in addition, and the effect that current existing technology obtains in size distribution is also not obvious.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, has proposed a kind of novel manufacture craft of silica gel, and described super big hole silica gel is to carry out colloidal sol by sodium metasilicate and sulfuric acid to react and make.
Technical scheme of the present invention is: a kind of novel manufacture craft of silica gel, and described flow process is mixed, reacts and wash by joining alkali pond, complex acid tank, reaction tower and water washing tank, and concrete technology flow process is: in silica gel production equipment, prepare SiO by joining alkali pond2Content is the sodium silicate solution of 30-40%, temperature is 30-35 DEG C, in complex acid tank, configure the sulfuric acid solution that content is 15-25%, temperature is 20-35 DEG C, sulfuric acid solution is joined in reaction tower, again the sodium silicate solution preparing is joined in reaction tower, after reaction, form silica gel particle, silica gel particle is at pH value in the acid solution at 1-3 after aging 15-18 hour, enter into water washing tank, in the water of 75-85 DEG C, wash, washing is carried out ammonia bubble 6-8 hour after terminal, then in baking oven, press filtration is dried, and obtains super big hole silica gel.
Reaction tower interior reaction temperature is 100-110 DEG C.
In water washing tank, washing time is 70-75 hour.
The temperature of press filtration baking stage baking oven is 100-150 DEG C, and drying time is 48-52 hour.
The present invention has following beneficial effect:
1) without raw material are carried out to special processing.
2) production process is all carried out under condition of normal pressure, is conducive to large-scale production.
3) in water-washing process, washing temperature is carried out at normal temperatures, the silica gel even particle size distribution making.
4) can according to client need in water-washing process, carry out reaming processing, meet different clients' index request.
5) shortened the production cycle, utilization ratio of device obviously improves.
Further illustrate the present invention below in conjunction with detailed description of the invention.
Detailed description of the invention
Below embodiment of the present invention:
Embodiment 1:
First 10 liter of 15% sulfuric acid solution joined in experiment reaction tower, then by 6 liters of SiO that prepare2Content is that 30% sodium silicate solution is injected in experiment reaction tower, in tower, temperature is 105 DEG C, in acid solution at pH value at 1-3, after aging 16 hours, enter into experimental water cleaning of evaporator, in the water of 78 DEG C, wash, washing was carried out ammonia bubble 7 hours after 70 hours, then the temperature of press filtration baking stage baking oven is 100 DEG C, and drying time is that 50 hours experimental datas are as table 1.
Table 1 experimental data table
Embodiment 2:
First 10 liter of 18% sulfuric acid solution joined in experiment reaction tower, then by 6 liters of SiO that prepare2Content is that 35% sodium silicate solution is injected in experiment reaction tower, in tower, temperature is 107 DEG C, in acid solution at pH value at 1-3, after aging 17 hours, enter into experimental water cleaning of evaporator, in the water of 80 DEG C, wash, washing was carried out ammonia bubble 7 hours after 72 hours, then the temperature of press filtration baking stage baking oven is 130 DEG C, and drying time is that 52 hours experimental datas are as table 2.
Table 2 experimental data table
Claims (2)
1. a novel manufacture craft for silica gel, is characterized in that: described flow process is mixed, reacts and wash by joining alkali pond, complex acid tank, reaction tower and water washing tank, and concrete technology flow process is: in silica gel production equipment, prepare SiO by joining alkali pond2Content is the sodium silicate solution of 30-40%, temperature is 30-35 DEG C, in complex acid tank, configure the sulfuric acid solution that content is 15-25%, temperature is 20-35 DEG C, sulfuric acid solution is joined in reaction tower, again the sodium silicate solution preparing is joined in reaction tower, after reaction, form silica gel particle, silica gel particle is at pH value in the acid solution at 1-3 after aging 15-18 hour, enter into water washing tank, in the water of 75-85 DEG C, wash, in water washing tank, washing time is 70-75 hour, washing is carried out ammonia bubble 6-8 hour after terminal, then in baking oven, press filtration is dried, obtain super big hole silica gel.
2. super big hole silica gel according to claim 1 technological process, is characterized in that: reaction tower interior reaction temperature is 100-110 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558292.0A CN105585020A (en) | 2014-10-18 | 2014-10-18 | Novel manufacturing technology of silica gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558292.0A CN105585020A (en) | 2014-10-18 | 2014-10-18 | Novel manufacturing technology of silica gel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105585020A true CN105585020A (en) | 2016-05-18 |
Family
ID=55924968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410558292.0A Pending CN105585020A (en) | 2014-10-18 | 2014-10-18 | Novel manufacturing technology of silica gel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105585020A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055555A (en) * | 2017-06-20 | 2017-08-18 | 上海华震科技有限公司 | The continuous production device and production method of a kind of amorphous silica gel |
-
2014
- 2014-10-18 CN CN201410558292.0A patent/CN105585020A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055555A (en) * | 2017-06-20 | 2017-08-18 | 上海华震科技有限公司 | The continuous production device and production method of a kind of amorphous silica gel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104448397B (en) | A kind of cellulose-silicon dioxide composite aerogel in-situ preparation method | |
| CN101244826B (en) | Method for producing silicon dioxide silica aerogel by drying in atmosphere pressure with rice hull as raw material | |
| CN102897779A (en) | Preparation method of transparent silicon dioxide aerogel | |
| CN102407099B (en) | Preparation method of silica gel loaded polyhydroxyl chelating resin for highly effective boron removal | |
| CN102500315A (en) | LiX molecular sieve adsorbent and preparation method thereof | |
| CN102765936B (en) | Stable zirconium oxide superfine power prepared by adopting non-aqueous solvent process and preparation method thereof | |
| CN107792888A (en) | A kind of high-specific surface area ZnCo2O4Preparation method | |
| CN103360795A (en) | Modified production method for nano silicon dioxide for special rubber | |
| CN105585020A (en) | Novel manufacturing technology of silica gel | |
| CN1186254C (en) | macroreticular silica gel and its preparing process | |
| CN103043670A (en) | Process flow of novel water-absorbent silica gel | |
| CN109205619A (en) | Method for extracting and utilizing main components of rice hulls step by step | |
| CN103030150A (en) | Technological process of mesoporous silica gel | |
| CN103086386A (en) | Supermacroporous silica gel process flow | |
| CN105585018A (en) | Technological process of super-macroporous silica gel | |
| CN105776227A (en) | Production technology of ultra-large-pore adsorptive silica gels | |
| CN105585310A (en) | Supermacroporous silica gel novel production technology | |
| CN105585019A (en) | Technology for producing water-absorbent silica gel | |
| CN107324350B (en) | Method for preparing nano precipitated silica by using low-grade diatomite | |
| CN102757059A (en) | Method for preparing silicon dioxide aerogels | |
| CN105523559A (en) | Super-macroporous silica gel process flow | |
| CN102765726B (en) | A kind of take rice hull ash as the method that aerosil prepared by raw material | |
| CN104591159A (en) | Preparation process of graphite oxide | |
| CN104891504A (en) | A method of extracting white carbon black from coal cinder | |
| CN103043669A (en) | Microporous silica gel preparing flow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |