CN107663650A - A kind of method that calcium sulfate crystal whiskers are prepared by shell - Google Patents
A kind of method that calcium sulfate crystal whiskers are prepared by shell Download PDFInfo
- Publication number
- CN107663650A CN107663650A CN201610616200.9A CN201610616200A CN107663650A CN 107663650 A CN107663650 A CN 107663650A CN 201610616200 A CN201610616200 A CN 201610616200A CN 107663650 A CN107663650 A CN 107663650A
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- China
- Prior art keywords
- calcium sulfate
- shell
- sulfate crystal
- crystal whiskers
- prepared
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Classifications
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/46—Sulfur-, selenium- or tellurium-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/62—Whiskers or needles
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The present invention relates to a kind of method that calcium sulfate crystal whiskers are prepared by shell, its step is 1) shell smashing, 30 mesh sieves are crossed, hydrochloric acid solution is added, stirring, reacts 1~2h, obtain reaction solution；2) reacting liquid filtering, filtrate is obtained；3) sulfuric acid and potassium chloride are added into filtrate, stirring, reacts 1~2h, stands 2~3h, filtering, the cleaning of filter cake purified water；4) calcium sulfate crystal whiskers are obtained after filtration cakes torrefaction.The present invention prepares the raw material shell wide material sources, cheap of calcium sulfate crystal whiskers, can effectively reduce the production cost of calcium sulfate crystal whiskers, expand the new application of shell resource；Preparation method of the present invention is easy, mild condition, and crystal promoter potassium chloride can promote the growth of calcium sulfate crystal whiskers, be easy to industrialized production.
Description
Technical field
The present invention relates to a kind of method for preparing calcium sulfate crystal whiskers, and in particular to a kind of to prepare calcium sulfate crystal whiskers by shell
Method, belong to chemical technology field.
Background technology
Calcium sulfate crystal whiskers are CaSO4Fibrous monocrystal, can be free of the crystallization water, containing half of crystallization water or two crystallizations water,
Wherein anhydrous and half water calcium sulfate crystal whiskers are the most commonly used.Calcium sulfate crystal whiskers have high intensity, high-modulus, high tenacity, high insulation
Property, abrasion performance, high temperature resistant, acid and alkali-resistance, anticorrosive, infrared reflectivity is good, be easy to surface treatment, easily with polymer it is compound,
Many excellent physicochemical properties such as nontoxic.
Shell, refer to molluscan shell.With a kind of special gland cell, it is soft that its secretion can form protection body
The calcified material of soft part.The calcium carbonate and a small amount of chitin element that the main component of shell is 95%.3 layers are generally can be divided into, outermost
Layer is the cuticula (shell skin) of dark brown, thin, transparent, prevents carbonic acid from corroding, the chitin secreted by overcoat film edge
Element is formed；Middle level is prismatic layer (shell), and thicker, the calcite for the prism-shaped secreted by overcoat film edge is formed, and outer layer is with
Layer can expand the area of shell, but not increase thickness；Internal layer is nacre (bottom), the blade secreted by outer embrane whole surface
Shape aragonite (aragonite) is built up, and has beautiful gloss, can be increased with body and be thickeied.
At present, do not retrieve using shell as raw material to prepare the correlation report of calcium sulfate crystal whiskers, the shellfish enriched using material
The excellent calcium sulfate crystal whiskers of shell processability have very important realistic meaning.
The content of the invention
The present invention provides a kind of new method for preparing calcium sulfate crystal whiskers, this method raw material shell abundance, can drop
Low production cost.
The technical solution adopted by the present invention is：
A kind of method that calcium sulfate crystal whiskers are prepared by shell, comprises the following steps：
1) shell smashes, and crosses 30 mesh sieves, adds hydrochloric acid solution, stirring, reacts 1~2h, obtain reaction solution；
2) reacting liquid filtering, filtrate is obtained；
3) sulfuric acid and potassium chloride are added into filtrate, stirring, reacts 1~2h, stands 2~3h, filtering, filter cake purified water are clear
Wash；
4) calcium sulfate crystal whiskers are obtained after filtration cakes torrefaction.
Preferably, a kind of method that calcium sulfate crystal whiskers are prepared by shell, the concentration of the step 1) hydrochloric acid is 1~2mol/
L。
Preferably, the mol ratio of a kind of method that calcium sulfate crystal whiskers are prepared by shell, the step 1) hydrochloric acid and shell is
1:2~2.2.
Preferably, the mol ratio of a kind of method that calcium sulfate crystal whiskers are prepared by shell, the step 3) sulfuric acid and shell is
1:1~1.1.
Preferably, a kind of method that calcium sulfate crystal whiskers are prepared by shell, the weight of the step 3) potassium chloride is shell weight
The 0.1~0.2% of amount.
Preferably, a kind of method that calcium sulfate crystal whiskers are prepared by shell, the step 4) drying temperature are 200~250 DEG C.
The beneficial effects of the present invention are:
1st, the raw material shell wide material sources of calcium sulfate crystal whiskers are prepared, it is cheap, it can effectively reduce the life of calcium sulfate crystal whiskers
Cost is produced, has expanded the new application of shell resource.
2nd, preparation method simplicity of the present invention, mild condition, be easy to industrialized production.
3rd, crystal promoter potassium chloride can promote the growth of calcium sulfate crystal whiskers.
Embodiment
The invention will be further described in conjunction with specific embodiments.
Embodiment 1
1) 1kg shells are smashed, crosses 30 mesh sieves, added 2mol/L hydrochloric acid solution 9.5L, stirring, react 2h, obtained anti-
Answer liquid；
2) reacting liquid filtering, filtrate is obtained；
3) 98wt% sulfuric acid 950g and potassium chloride 1g is added into filtrate, stirring, reacts 2h, stands 3h, filtering, filter cake are pure
Change water cleaning；
4) 200 DEG C of dryings of filter cake, obtain calcium sulfate crystal whiskers.
Embodiment 2
1) 1kg shells are smashed, crosses 30 mesh sieves, added 1mol/L hydrochloric acid solution 20L, stirring, react 1.5h, obtained anti-
Answer liquid；
2) reacting liquid filtering, filtrate is obtained；
3) 60wt% sulfuric acid 1550g and potassium chloride 1.5g is added into filtrate, stirring, reacts 1h, stands 3h, filtering, filter
Cake purified water is cleaned；
4) 220 DEG C of dryings of filter cake, obtain calcium sulfate crystal whiskers.
Embodiment 3
1) 1kg shells are smashed, crosses 30 mesh sieves, added 1mol/L hydrochloric acid solution 20.9L, stirring, react 1h, obtained anti-
Answer liquid；
2) reacting liquid filtering, filtrate is obtained；
3) 60wt% sulfuric acid 1700g and potassium chloride 2g is added into filtrate, stirring, reacts 1h, stands 2h, filtering, filter cake
Purified water is cleaned；
4) 250 DEG C of dryings of filter cake, obtain calcium sulfate crystal whiskers.
Embodiment 4
1) 1kg shells are smashed, crosses 30 mesh sieves, added 1.4mol/L hydrochloric acid solution 14L, stirring, react 2h, obtained anti-
Answer liquid；
2) reacting liquid filtering, filtrate is obtained；
3) 40wt% sulfuric acid 2330g and potassium chloride 2g is added into filtrate, stirring, reacts 2h, stands 2h, filtering, filter cake
Purified water is cleaned；
4) 220 DEG C of dryings of filter cake, obtain calcium sulfate crystal whiskers.
Claims (6)
- A kind of 1. method that calcium sulfate crystal whiskers are prepared by shell, it is characterised in that comprise the following steps：1) shell smashes, and crosses 30 mesh sieves, adds hydrochloric acid solution, stirring, reacts 1~2h, obtain reaction solution；2) reacting liquid filtering, filtrate is obtained；3) sulfuric acid and potassium chloride are added into filtrate, stirring, reacts 1~2h, stands 2~3h, filtering, the cleaning of filter cake purified water；4) calcium sulfate crystal whiskers are obtained after filtration cakes torrefaction.
- 2. a kind of method that calcium sulfate crystal whiskers are prepared by shell according to claim 1, it is characterised in that step 1) is described The concentration of hydrochloric acid is 1~2mol/L.
- 3. a kind of method that calcium sulfate crystal whiskers are prepared by shell according to claim 1, it is characterised in that step 1) is described The mol ratio of hydrochloric acid and shell is 1:2~2.2.
- 4. a kind of method that calcium sulfate crystal whiskers are prepared by shell according to claim 1, it is characterised in that step 3) is described The mol ratio of sulfuric acid and shell is 1:1~1.1.
- 5. a kind of method that calcium sulfate crystal whiskers are prepared by shell according to claim 1, it is characterised in that step 3) is described The weight of potassium chloride is the 0.1~0.2% of shell weight.
- 6. a kind of method that calcium sulfate crystal whiskers are prepared by shell according to claim 1, it is characterised in that step 4) is described Drying temperature is 200~250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616200.9A CN107663650A (en) | 2016-07-30 | 2016-07-30 | A kind of method that calcium sulfate crystal whiskers are prepared by shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616200.9A CN107663650A (en) | 2016-07-30 | 2016-07-30 | A kind of method that calcium sulfate crystal whiskers are prepared by shell |
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| Publication Number | Publication Date |
|---|---|
| CN107663650A true CN107663650A (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610616200.9A Pending CN107663650A (en) | 2016-07-30 | 2016-07-30 | A kind of method that calcium sulfate crystal whiskers are prepared by shell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837592A (en) * | 2019-03-07 | 2019-06-04 | 山东虎力机械有限公司 | A kind of joint disposal of industrial wastes utilizes method |
| CN111270312A (en) * | 2020-02-12 | 2020-06-12 | 烟台大学 | Method for preparing gypsum whisker from titanium gypsum |
-
2016
- 2016-07-30 CN CN201610616200.9A patent/CN107663650A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837592A (en) * | 2019-03-07 | 2019-06-04 | 山东虎力机械有限公司 | A kind of joint disposal of industrial wastes utilizes method |
| CN109837592B (en) * | 2019-03-07 | 2019-09-27 | 广西阿米巴科技有限公司 | A kind of joint disposal of industrial wastes utilizes method |
| CN111270312A (en) * | 2020-02-12 | 2020-06-12 | 烟台大学 | Method for preparing gypsum whisker from titanium gypsum |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180206 |
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| WD01 | Invention patent application deemed withdrawn after publication |