CN102492333A - Environment-friendly chalk and preparation method thereof - Google Patents
Environment-friendly chalk and preparation method thereof Download PDFInfo
- Publication number
- CN102492333A CN102492333A CN2011103812182A CN201110381218A CN102492333A CN 102492333 A CN102492333 A CN 102492333A CN 2011103812182 A CN2011103812182 A CN 2011103812182A CN 201110381218 A CN201110381218 A CN 201110381218A CN 102492333 A CN102492333 A CN 102492333A
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- CN
- China
- Prior art keywords
- starch
- gypsum
- extrusion molding
- chalk
- preparation
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- 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.)
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Abstract
The invention discloses environment-friendly chalk, which is prepared by carrying out uniform mixing, extrusion molding and drying on starch or fiber powder and gypsum powder. During preparation, the starch or fiber powder and the gypsum powder are mixed uniformly and then added with a proper amount of water, and extrusion molding and drying are carried out to obtain products. According to the invention, the starch or the fiber powder are used as main raw materials, and the gypsum is used as a coagulant, so that the advantages that the products have less dust, wastes are recycled, renewable resources are utilized and the like are achieved.
Description
Technical field
The present invention relates to a kind of chalk.
Background technology
Existing chalk dust is big, during use, influences the healthy of teachers and students, and people attempt to adopt the whole bag of tricks for a long time, but produce little effect.
Summary of the invention
Non-dusting environmental protection chalk and preparation method thereof when the object of the present invention is to provide a kind of use.
Technical solution of the present invention is:
A kind of environmental protection chalk is characterized in that: by starch or fiber dust and terra alba through mix, extrusion molding, oven dry process.
Said terra alba is for adopting medical gypsum.
Add suitable quantity of water after starch or fiber dust and terra alba mixed, extrusion molding, oven dry, product.
The present invention is a main raw material with starch or fiber dust, and gypsum is as peptizer; Product has advantage:
1) dust is few.The major ingredient of tradition chalk is exactly a gypsum, and the dust of generation is many, is prone to fly upward, and teachers and students suck more chalk dust; After using starch or fiber dust instead and being major ingredient, the dust of generation is less, is difficult for flying upward, and reduces health affected greatly.
2) refuse reclamation.The grain of starch low-quality capable of using or the leftovers in dining room, the tangerine bar of fiber dust army provisions capable of using.
3) utilized renewable resources.Grain and tangerine bar thereof all are reproducible resources, have reduced the Gypsum Mine resource consumption widely.
Below in conjunction with embodiment the present invention is described further.
Embodiment
A kind of environmental protection chalk, by starch or fiber dust and terra alba through mix, extrusion molding, oven dry process.
Said terra alba is for adopting medical gypsum.
During preparation, add suitable quantity of water after starch or fiber dust and terra alba mixed, extrusion molding, oven dry, product.
Claims (3)
1. environmental protection chalk is characterized in that: by starch or fiber dust and terra alba through mix, extrusion molding, oven dry process.
2. environmental protection chalk according to claim 1 is characterized in that: said terra alba is for adopting medical gypsum.
3. the preparation method of an environmental protection chalk is characterized in that: add suitable quantity of water after starch or fiber dust and terra alba are mixed, extrusion molding, oven dry, product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103812182A CN102492333A (en) | 2011-11-26 | 2011-11-26 | Environment-friendly chalk and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103812182A CN102492333A (en) | 2011-11-26 | 2011-11-26 | Environment-friendly chalk and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102492333A true CN102492333A (en) | 2012-06-13 |
Family
ID=46184197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103812182A Pending CN102492333A (en) | 2011-11-26 | 2011-11-26 | Environment-friendly chalk and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102492333A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109021714A (en) * | 2018-05-09 | 2018-12-18 | 董英杰 | A kind of dust-free chalk and preparation method thereof |
| CN116855133A (en) * | 2023-05-17 | 2023-10-10 | 广州美术学院 | Pure natural soybean crayon and preparation method thereof |
-
2011
- 2011-11-26 CN CN2011103812182A patent/CN102492333A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109021714A (en) * | 2018-05-09 | 2018-12-18 | 董英杰 | A kind of dust-free chalk and preparation method thereof |
| CN116855133A (en) * | 2023-05-17 | 2023-10-10 | 广州美术学院 | Pure natural soybean crayon and preparation method thereof |
| CN116855133B (en) * | 2023-05-17 | 2024-04-16 | 广州美术学院 | Pure natural soybean crayon and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120613 |