CN1035094A - Use production of calcium carbide from its residue - Google Patents
Use production of calcium carbide from its residue Download PDFInfo
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- CN1035094A CN1035094A CN88100821A CN88100821A CN1035094A CN 1035094 A CN1035094 A CN 1035094A CN 88100821 A CN88100821 A CN 88100821A CN 88100821 A CN88100821 A CN 88100821A CN 1035094 A CN1035094 A CN 1035094A
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- calcium carbide
- carbide
- dehydration
- calcium
- liquid phase
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Abstract
The present invention uses production of calcium carbide from its residue, belong to the Application in Chemical Engineering technical field, the technical problem that solves is to handle the chemical spent material calcium carbide slag, its major technique feature is through precipitation with the calcium carbide deslagging, dehydration, technological process such as burn till, obtain the particulate state calcium oxide, the content of its calcium oxide is more than 80%, by certain proportioning granular calcium oxide is mixed with carbonaceous material, in the input electric arc furnace, generate calcium carbide through liquid phase reaction, replace partly or whole lime production calcium carbide, reduced production cost with carbide slag, have remarkable economic efficiency and social benefit, be applicable to gas welding, and utilize acetylene to make Chemicals etc.
Description
The present invention uses production of calcium carbide from its residue, belongs to the Application in Chemical Engineering technical field.Learn the production process of calcium carbide from known technology, be to mix with carbonaceous material with lump lime (particle diameter is 20～60 millimeters), drop in high temperature (1700～2300 ℃) electric arc furnace, promptly generate calcium carbide through liquid phase reaction.
The present invention carries out on the basis of my this invention of " using production of calcium oxide of high activity from calcium carbide residue " once more, and its gordian technique is to reduce the impurity in the carbide slag, and to the control of balling-up and firing process.Through online information retrieval, also there is not similar techniques at present both at home and abroad.
The objective of the invention is to handle the chemical spent material calcium carbide slag, that is be utilization of waste material, because replace partly or whole lime manufacturing calcium carbide with carbide slag, reduced the production cost of calcium carbide widely, have remarkable economic efficiency and social benefit.Be applicable to gas welding and utilize acetylene to make Chemicals etc.
Processing method with production of calcium carbide from its residue has two kinds:
Method one: the carbide slag (water-content 50～95%) that acetylene gas factory is given off, earlier through precipitation with water content greater than 60% carbide slag, utilize the settled principle of deadweight, through settling tank or rubbing board, partial impurities is separated, if the water content of the carbide slag of discharging is less than 50%, then need add a certain amount of water stirs, again through the settling tank despumation, dewater through pressure filter or other means, make water content greater than 50% calcium carbide deslagging, the water content after dehydration is 15～35%, with artificial or machinery less than 200 kilograms per centimeter
2Pressure under, make particle diameter and be 10～80 millimeters spheroplast, the porous of packing into saggar, go into the cellar for storing things oven dry, if the moisture content of moulding is lower or saggar is shorter, also can be without oven dry, then can become directly into klining, the temperature of burning till is 500～1200 ℃, heated up 1 to 5 hour, constant temperature 1 to 5 hour was lowered the temperature 1 to 5 hour, calcination equipment is according to the size of bed drain purge, can be periodic kiln or continuous cellar for storing things, the calcium oxide content of the product after going out to store mixes granular calcium oxide by certain proportioning more than 80% with carbonaceous material, can drop in the electric arc furnace, generate calcium carbide through liquid phase reaction.
Method two: the technology before wherein dewatering and dewatering is same as method one, and the carbide slag (water-content is 15～35%) with after the dehydration mixes with carbonaceous material according to a certain ratio, with artificial or mechanical less than 200 kilograms per centimeter
2Pressure under, make particle diameter and be 10～80 millimeters spheroplast, through fully dropping in the electric arc furnace after the oven dry, generate calcium carbide through liquid phase reaction, operation for convenience, also can will throw stove after the spheroid pre-burning again, the pre-burning process is same as the part of burning till in the method one.
Advantage of the present invention or positively effect, not only solved the pollution problem of carbide slag with production of calcium carbide from its residue to environment, and problem such as occupation of land, and with carbide slag replace partly or all lime produce calcium carbide, reduce the production cost of calcium carbide widely, had advantages such as less investment, instant effect.
Description of drawings: production technique of the present invention is shown in skeleton diagram.Fig. 1 is through the precipitation despumation with moisture 70% calcium carbide deslagging, it is 15～35% that dehydration makes the water content of carbide slag, with artificial or mechanical balling-up, with granularity is that 10～80 millimeters the carbide slag porous saggar of packing into is put into kiln drying (under certain condition also not drying), under 500～1200 ℃, burn till, its calcium oxide content of product behind the kiln discharge is more than 80%, by a certain percentage the particulate state calcium oxide is mixed with carbonaceous material, in the input electric arc furnace, promptly generate calcium carbide through liquid phase reaction.
Fig. 2 is the another kind of craft block-diagram with production of calcium carbide from its residue, sees for details with the processing method of production of calcium carbide from its residue described.
Realize best way of the present invention, now illustrate, the year discharging carbide slag quantity of slag as certain acetylene gas factory is 1.3 ten thousand tons, its water content is 70%, earlier with carbide slag after settling tank is got rid of partly impurity, dewater through pressure filter again, the water content of the carbide slag after the dehydration is 20～30%, coke is mixed with carbide slag according to a certain ratio, make the spheroid of 30 millimeters particle diameters more by hand, the waste heat that utilizes furnace of calcium carbide with its oven dry after, can drop in the furnace of calcium carbide, generate calcium carbide through liquid phase reaction.
Claims (5)
1. mix with carbonaceous material with lump lime (particle diameter is 20～60 millimeters), drop in high temperature (1700～2300 ℃) electric arc furnace, generate calcium carbide through liquid phase reaction, the present invention uses production of calcium carbide from its residue, its major technique feature is through precipitation with the calcium carbide deslagging, dehydration, balling-up, oven dry (or not drying), burn till, go out the cellar for storing things, mix carbon according to a certain ratio, throw stove, liquid phase reaction, generate calcium carbide, or with the calcium carbide deslagging through precipitation, dehydration, mix carbon according to a certain ratio, pre-burning (or not pre-burning), balling-up, oven dry, throw stove, liquid phase reaction, generate calcium carbide.
2. the precipitation described in claim 1, it is characterized in that with water content greater than 60% carbide slag, utilize the settled principle of deadweight, through settling tank or rubbing board, partial impurities is separated.
3. the dehydration described in claim 1 is characterized in that making water content greater than 50% calcium carbide deslagging, and the water content after dehydration is 15～35%.
4. burning till described in claim 1 is characterized in that the temperature of burning till is 500～1200 ℃, heats up 1 to 5 hour, and constant temperature 1 to 5 hour was lowered the temperature 1 to 5 hour.
5. the mixed carbon described in claim 1 is characterized in that mixing with carbonaceous material with carbide slag, less than 200 kilograms per centimeter
2Forming under the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88100821A CN1035094A (en) | 1988-02-08 | 1988-02-08 | Use production of calcium carbide from its residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88100821A CN1035094A (en) | 1988-02-08 | 1988-02-08 | Use production of calcium carbide from its residue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1035094A true CN1035094A (en) | 1989-08-30 |
Family
ID=4831517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88100821A Withdrawn CN1035094A (en) | 1988-02-08 | 1988-02-08 | Use production of calcium carbide from its residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035094A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366530C (en) * | 2006-06-08 | 2008-02-06 | 徐建明 | Method for refining calcium carbide directly by using iron dross, steel slag, or coal slag |
| CN101805003A (en) * | 2009-06-08 | 2010-08-18 | 王嘉兴 | Method for using carbide slag for material circulation system in carbide industry |
| CN102583377A (en) * | 2012-01-12 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for producing calcium carbide by using gypsum and industrial by-product gypsum |
| CN102653403A (en) * | 2012-05-17 | 2012-09-05 | 五冶集团成都节能工程技术服务有限公司 | Process method for preparing calcium carbide by recycling calcium carbide slag |
| CN102674717A (en) * | 2012-05-17 | 2012-09-19 | 五冶集团成都节能工程技术服务有限公司 | Acetylene sludge recycling system and application method thereof |
| CN102776047A (en) * | 2012-07-10 | 2012-11-14 | 中国科学院过程工程研究所 | Binder and method for molding calcium-base industrial powder based on binder |
| CN105948092A (en) * | 2016-05-09 | 2016-09-21 | 聂国印 | Recycling method of carbide slag in chlor-alkali industry |
| CN115716649A (en) * | 2022-11-25 | 2023-02-28 | 安徽华塑股份有限公司 | Method for producing calcium carbide by recycling calcium carbide slag |
-
1988
- 1988-02-08 CN CN88100821A patent/CN1035094A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100366530C (en) * | 2006-06-08 | 2008-02-06 | 徐建明 | Method for refining calcium carbide directly by using iron dross, steel slag, or coal slag |
| CN101805003A (en) * | 2009-06-08 | 2010-08-18 | 王嘉兴 | Method for using carbide slag for material circulation system in carbide industry |
| CN102583377A (en) * | 2012-01-12 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for producing calcium carbide by using gypsum and industrial by-product gypsum |
| CN102653403A (en) * | 2012-05-17 | 2012-09-05 | 五冶集团成都节能工程技术服务有限公司 | Process method for preparing calcium carbide by recycling calcium carbide slag |
| CN102674717A (en) * | 2012-05-17 | 2012-09-19 | 五冶集团成都节能工程技术服务有限公司 | Acetylene sludge recycling system and application method thereof |
| CN102776047A (en) * | 2012-07-10 | 2012-11-14 | 中国科学院过程工程研究所 | Binder and method for molding calcium-base industrial powder based on binder |
| CN102776047B (en) * | 2012-07-10 | 2014-07-02 | 中国科学院过程工程研究所 | Method for molding calcium-base industrial powder |
| CN105948092A (en) * | 2016-05-09 | 2016-09-21 | 聂国印 | Recycling method of carbide slag in chlor-alkali industry |
| CN115716649A (en) * | 2022-11-25 | 2023-02-28 | 安徽华塑股份有限公司 | Method for producing calcium carbide by recycling calcium carbide slag |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |