CN109809418A - Light silicon dioxide and its production technology are prepared using industrial residue - Google Patents
Light silicon dioxide and its production technology are prepared using industrial residue Download PDFInfo
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- CN109809418A CN109809418A CN201711152022.XA CN201711152022A CN109809418A CN 109809418 A CN109809418 A CN 109809418A CN 201711152022 A CN201711152022 A CN 201711152022A CN 109809418 A CN109809418 A CN 109809418A
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- calcium
- bisulfite
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- sulfite
- silicates
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Abstract
It is a kind of to prepare light silicon dioxide and its production technology using industrial residue, it is characterized in that quartz sand, calcium sulfate and charcoal are placed in kiln reaction in furnace, the solid and sulfur dioxide of generation generate calcium silicates, calcium sulfite and calcium bisulfite through the following steps processing respectively: (1) it generates calcium silicates: will be added sulfuric acid after the solid dissolution of generation, precipitating filtering, washed, mashing, dry calcium silicates；(2) produce calcium sulfite: soda ash, which is added in bisulfite calcium solution, generates calcium sulfite solution, and a part is concentrated and dried to obtain calcium sulfite；After a part is reacted with the sulfur dioxide generated, bisulfite calcium solution is generated, reuse produces calcium sulfite；(3) produce calcium bisulfite: soda ash, which is added in bisulfite calcium solution, generates calcium sulfite solution, after being reacted with the sulfur dioxide of generation, crystallized, dry calcium bisulfite.Process flow of the invention is simple, coproduction multiple product, and production cost is low, has biggish application and popularization value.
Description
Technical field
Light silicon dioxide and its production technology are prepared using industrial residue the present invention relates to a kind of.
Background technique
Light silicon dioxide is the good reinforcing agent of rubber；Also serve as lubricant, insulating materials and plastic products, paper,
The filler material or white pigment of paint, textile etc..Currently, the conventional method of most common production calcium silicates is precipitating both at home and abroad
Method, the method need to consume a large amount of soda ash and sulfuric acid, higher cost.
Summary of the invention
Light silicon dioxide and its production technology are prepared using industrial residue the purpose of the present invention is to provide a kind of, the work
Skill reduces the cost of production calcium silicates.
A kind of utilization industrial residue of the invention prepares light silicon dioxide and its production technology, it is characterised in that will be quartzy
It is put into kiln and is reacted after husky, calcium sulfate and charcoal mixing, the calcium silicates solid and sulfur dioxide of generation are respectively through following step
Calcium silicates, calcium sulfite and calcium bisulfite are generated after rapid processing: (1) generating calcium silicates: the calcium silicates solid of generation is pressed 100
: 180~488 weight ratio is added water and is dissolved, and obtains calcium silicates liquid, after precipitating filtering, calcium silicates liquid and concentration
13~19: 1 volume ratio is pressed for 98% sulfuric acid, 1~4h is reacted at 70~100 DEG C, is washed after reaction, after washing
Material be beaten, finally dry out calcium silicates；(2) it produces calcium sulfite: soda ash is added to sulfurous acid by 1: 1 molar ratio
In hydrogen calcium solution, generate calcium sulfite solution, calcium sulfite is produced in a part of concentrated drying, a part of calcium sulfite solution with
The sulfur dioxide of generation press 1: 1 molar ratio, after being reacted at 20~50 DEG C, generate bisulfite calcium solution, then with it is pure
Alkali reacts reuse and produces calcium sulfite.(3) produce calcium bisulfite: it is molten that soda ash by 1: 1 molar ratio is added to calcium bisulfite
In liquid, 1: 1 molar ratio is pressed with the sulfur dioxide of generation, after being reacted at 20~50 DEG C, generates supersaturated bisulfite
Bisulfite calcium product is produced in calcium solution, crystallized, drying.
Theoretical basis of the invention is:
Compared with existing technology, the present invention has the advantages that first is that production calcium silicates simultaneously, coproduction calcium sulfite, Asia
The products such as calcium bisulfate, calcium sulfate can be recycled after reaction process, and this reduces production cost recycling；Second is that without useless
Object discharge；Three utilize all risk insurance temperature horse-shoe flame furnace continuous sulphuric acid production calcium method waterglass.
Specific embodiment
The present invention is implemented as follows: by raw material quartz sand, calcium sulfate and carbon (crushing) according to SiO2: Na2SO4: C
The mixing of=100: 81.4: 6.5 ratios, it is continuous to put into shape of a hoof all risk insurance temperature kiln, 1420 DEG C~1450 DEG C of reaction temperature, continuously go out
Material, material obtain 3.5M, 29Be ' waterglass liquid through water quenching, dissolution.Bottom water 2.5L, pre-add water are added in the reaction kettle of 5L
Glass 0.075L is heated up to 86 DEG C, within 100 minutes time, while being uniformly added into water glass solution 1.163L and sulfuric acid
0.072L is added after 0.011L is carried out after reaction and adjusts pH value to 4.5 after acid.Silicon is made in the washed drying of resulting material
Sour calcium 348.1g (BET 185m2/g), solution obtain 235.14g calcium sulfate by being concentrated and dried.
Wherein, during generating calcium silicates, the sulphur of recoverable is produced in the concentrated drying of cleaning solution after washing
Sour calcium.
It generates calcium sulfite: soda ash is added in bisulfite calcium solution by 1: 1 molar ratio, it is molten to generate calcium sulfite
Calcium sulfite is produced in liquid, a part of concentrated drying, and a part of calcium sulfite solution and generation ground sulfur dioxide press 1: 1 mole
Than after being reacted at 20~50 DEG C, generating bisulfite calcium solution, then react reuse production calcium sulfite with soda ash.
Production calcium bisulfite: soda ash is added in bisulfite calcium solution by 1: 1 molar ratio, the titanium dioxide with generation
Sulphur presses 1: 1 molar ratio, after being reacted at 20~50 DEG C, generates supersaturated bisulfite calcium solution, crystallized, dry system
Bisulfite calcium product out.
Process flow of the invention is simple, production cost is low, has biggish application and popularization value.
Claims (1)
1. a kind of prepare light silicon dioxide and its production technology using industrial residue, it is characterised in that by quartz sand, calcium sulfate
It is reacted with being put into kiln after charcoal mixing, the calcium silicates solid and sulfur dioxide of generation are raw after the following steps are handled respectively
At calcium silicates, calcium sulfite and calcium bisulfite:
(1) it generates calcium silicates: water is added by 100: 180~488 weight ratio in the calcium silicates solid of generation and is dissolved, is obtained
Calcium silicates liquid, after precipitating filtering, the sulfuric acid that calcium silicates liquid and concentration are 98% presses 13~19: 1 volume ratio, in 70~
1~4h is reacted at 100 DEG C, is washed after reaction, the material after washing is beaten, finally dry out calcium silicates；
(2) it produces calcium sulfite: soda ash is added in bisulfite calcium solution by 1: 1 molar ratio, generate calcium sulfite solution,
Calcium sulfite is produced in a part of concentrated drying, and the sulfur dioxide of a part of calcium sulfite solution and generation presses 1: 1 molar ratio,
After being reacted at 20~50 DEG C, bisulfite calcium solution is generated, then reacts reuse production calcium sulfite with soda ash.
(3) it produces calcium bisulfite: soda ash being added in bisulfite calcium solution by 1: 1 molar ratio, the titanium dioxide with generation
Sulphur presses 1: 1 molar ratio, after being reacted at 20~50 DEG C, generates supersaturated bisulfite calcium solution, crystallized, dry system
Bisulfite calcium product out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711152022.XA CN109809418A (en) | 2017-11-19 | 2017-11-19 | Light silicon dioxide and its production technology are prepared using industrial residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711152022.XA CN109809418A (en) | 2017-11-19 | 2017-11-19 | Light silicon dioxide and its production technology are prepared using industrial residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109809418A true CN109809418A (en) | 2019-05-28 |
Family
ID=66597822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711152022.XA Pending CN109809418A (en) | 2017-11-19 | 2017-11-19 | Light silicon dioxide and its production technology are prepared using industrial residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109809418A (en) |
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2017
- 2017-11-19 CN CN201711152022.XA patent/CN109809418A/en active Pending
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190528 |