CN108455533A - The method that calcium carbide waste slag produces potassium chlorate - Google Patents
The method that calcium carbide waste slag produces potassium chlorate Download PDFInfo
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- CN108455533A CN108455533A CN201810508948.6A CN201810508948A CN108455533A CN 108455533 A CN108455533 A CN 108455533A CN 201810508948 A CN201810508948 A CN 201810508948A CN 108455533 A CN108455533 A CN 108455533A
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- CN
- China
- Prior art keywords
- slag
- calcium carbide
- carbide
- waste slag
- potassium chlorate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/12—Chloric acid
- C01B11/14—Chlorates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of methods that calcium carbide waste slag produces potassium chlorate, include the following steps：(1) ferrosilicon particle and carbide slag will be obtained after calcium carbide waste slag washing；(2) carbide slag selected is poured into retort plus water mixes, then oxidation reaction is carried out by chlorine and oxygen into retort, (3) potassium chloride is added after the completion of oxidation and carries out metathesis reaction, (4) solution that double decomposition obtains is sent into crystallizing tank and carries out high temperature crystallization, (5) crystallization is dried, is then milled.The present invention is by adding washing step, calcium carbide waste slag is subjected to washing, sub-elect ferrosilicon particle and carbide slag, ferrosilicon particle and carbide slag can be recycled respectively, substantially increase the utilization rate and economic benefit of calcium carbide waste slag, calcium carbide waste slag pollution on the environment is decreased simultaneously, lime production potassium chlorate is replaced with it, avoids environmental pollution caused by lime storage and transport process.
Description
Technical field
The invention belongs to technical field of chemical raw material production, and in particular to a kind of method of calcium carbide waste slag production potassium chlorate.
Background technology
Carbide slag be calcium carbide hydrolysis obtain acetylene gas after with calcium hydroxide waste residue as main component.Main processing at present
The mode one of calcium carbide waste slag is to fill out sea, fill out ditch, some build the factory in strand or mountain area, all the time directly arrange carbide slag
Into seawall or mountain valley, fills out sea and fill out the regular stacking of ditch, several exhale does not make Anti-seeping technology.This method takes up a large area, seriously polluted.
Second is that being that auxiliary material produces cement with calcium carbide waste slag, it is configured to cement slurry with sandstone, clay slip, with calcined by rotary kiln cement.
As auxiliary material carry out production process in due in carbide slag impurity it is more, cause the product quality of output generally not high, while
Preferable economic benefit is not obtained.
Invention content
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, to provide a kind of calcium carbide waste slag life
The method for producing potassium chlorate.
The technical solution adopted in the present invention is：A kind of method of calcium carbide waste slag production potassium chlorate, includes the following steps：
(1) calcium carbide waste slag is sent into jigging machine and carries out washing, separated ferrosilicon particle and calcium carbide are obtained after washing by washing
Slag；
(2) it aoxidizes, the carbide slag selected is poured into retort, then plus water mixes slowly, the solid-liquid of carbide slag and water
Than 1:8-15, stirring duration 3-4 hours stand 1 hour after the completion of stirring, are then carried out into retort by chlorine and oxygen
Oxidation reaction, chlorine and the carbide slag proportioning of addition are 1-2:1, oxygen and the carbide slag proportioning of addition are 0.5-0.8:1；
(3) double decomposition is added potassium chloride and carries out metathesis reaction after the completion of oxidation, potassium chloride and the carbide slag of addition match
For 1.2-1.8:1；
(4) solution that double decomposition obtains is sent into crystallizing tank and carries out high temperature crystallization, crystallization temperature is 4-12 DEG C, crystallization
Time is 40-80 minutes, and a large amount of oxygen is generated in crystallization process, oxygen is passed through in the combustion chamber of drying box；
(5) crystallization is dried, drying temperature is 45-75 DEG C, and drying time is 5-8 hours；
(6) potassium chlorate after drying is milled, potassium chlorate powder is made, then carries out pack packaging.
Preferably, in step (2), start to stir after being passed through chlorine and oxygen, in retort, when mixing a length of 1-2
Hour, speed of agitator 20r/min.
Preferably, when carrying out metathesis reaction in step (3), 0.5-1 hours a length of, speed of agitator 25r/ when reaction
min。
The present invention carries out washing by adding washing step, by calcium carbide waste slag, sub-elects ferrosilicon particle and carbide slag, ferrosilicon
Particle and carbide slag can be recycled respectively, substantially increase the utilization rate and economic benefit of calcium carbide waste slag, while also be reduced
Calcium carbide waste slag pollution on the environment, replaces lime production potassium chlorate with it, avoids caused by lime storage and transport process
Environmental pollution.
Specific implementation mode
Below in conjunction with specific embodiment, invention is further described in detail.
The method of calcium carbide waste slag production potassium chlorate provided in this embodiment, includes the following steps：
(1) calcium carbide waste slag is sent into jigging machine and carries out washing by washing, and washing time is 3 hours, is needed in washing process
Clear water is added, separated ferrosilicon particle and carbide slag are obtained after washing；
(2) it aoxidizes, the carbide slag selected is poured into retort, then plus water mixes slowly, speed of agitator 10r/
Min, 12 DEG C of whipping temp is kept in whipping process, wherein 100 parts of carbide slag and 1000 parts of water is added, is mixed 4
1 hour is stood after hour, 150 parts of chlorine is then passed through into retort and 65 parts of oxygen carries out oxidation reaction, oxidation is anti-
Start continuous stirring during answering in retort, completes oxidation reaction after being stirred time 2 h, wherein speed of agitator is
20r/min；
(3) after the completion of oxidation, mixed liquor is filtered for double decomposition, and the waste residue filtered out is handled, and subdivision is added in filtrate
It solves in tank, then 160 parts of potassium chloride progress metathesis reaction is added into double decomposition tank, using stirring during metathesis reaction
Device carries out the rotation that rotating speed is 25r/min and stirs, and the reaction time is 1 hour；
(4) solution that double decomposition obtains is sent into and is heated to 10 DEG C in crystallizing tank and crystallizes, crystallization time is 40-80 points
Clock generates a large amount of oxygen in crystallization process, oxygen is passed through in the combustion chamber of drying box；
(5) crystallization is dried, drying temperature is 60 DEG C, and drying time is 6 hours；
(6) potassium chlorate after drying is milled, potassium chlorate powder is made, then carries out pack packaging.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement that are carried out based on technical solution provided by the present invention and inventive concept should all cover the protection model in the present invention
In enclosing.
Claims (3)
1. a kind of method of calcium carbide waste slag production potassium chlorate, it is characterised in that：Include the following steps：
(1) calcium carbide waste slag is sent into jigging machine and carries out washing, separated ferrosilicon particle and carbide slag are obtained after washing by washing；
(2) it aoxidizes, the carbide slag selected is poured into retort, then plus water mixes slowly, the solid-to-liquid ratio 1 of carbide slag and water:
8-15, stirring duration 3-4 hours stand 1 hour after the completion of stirring, are then aoxidized into retort by chlorine and oxygen
Reaction, chlorine and the carbide slag proportioning of addition are 1-2:1, oxygen and the carbide slag proportioning of addition are 0.5-0.8:1；
(3) double decomposition is added potassium chloride and carries out metathesis reaction after the completion of oxidation, potassium chloride and the carbide slag proportioning of addition are
1.2-1.8:1；
(4) solution that double decomposition obtains is sent into crystallizing tank and carries out high temperature crystallization, crystallization temperature is 4-12 DEG C, and crystallization time is
40-80 minutes, a large amount of oxygen was generated in crystallization process, oxygen is passed through in the combustion chamber of drying box；
(5) crystallization is dried, drying temperature is 45-75 DEG C, and drying time is 5-8 hours；
(6) potassium chlorate after drying is milled, potassium chlorate powder is made, then carries out pack packaging.
2. the method for calcium carbide waste slag production potassium chlorate according to claim 1, it is characterised in that：In step (2), it is being passed through
Start to stir after chlorine and oxygen, in retort, 1-2 hours a length of, speed of agitator 20r/min when mixing.
3. the method for calcium carbide waste slag production potassium chlorate according to claim 1, it is characterised in that：Step is answered in (3)
When decomposition reaction, 0.5-1 hours a length of, speed of agitator 25r/min when reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508948.6A CN108455533A (en) | 2018-05-24 | 2018-05-24 | The method that calcium carbide waste slag produces potassium chlorate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508948.6A CN108455533A (en) | 2018-05-24 | 2018-05-24 | The method that calcium carbide waste slag produces potassium chlorate |
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| CN201810508948.6A Pending CN108455533A (en) | 2018-05-24 | 2018-05-24 | The method that calcium carbide waste slag produces potassium chlorate |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086026A (en) * | 2010-04-30 | 2011-06-08 | 汪晋强 | Method for producing potassium chlorate and co-producing superfine calcium carbonate and ammonium chloride by utilizing carbide slag |
| CN106311719A (en) * | 2016-08-22 | 2017-01-11 | 四川龙蟒钛业股份有限公司 | Recycling method for carbide slag |
| CN106744692A (en) * | 2016-11-26 | 2017-05-31 | 毛竹青 | A kind of method that potassium chlorate is produced with calcium carbide waste slag |
-
2018
- 2018-05-24 CN CN201810508948.6A patent/CN108455533A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086026A (en) * | 2010-04-30 | 2011-06-08 | 汪晋强 | Method for producing potassium chlorate and co-producing superfine calcium carbonate and ammonium chloride by utilizing carbide slag |
| CN106311719A (en) * | 2016-08-22 | 2017-01-11 | 四川龙蟒钛业股份有限公司 | Recycling method for carbide slag |
| CN106744692A (en) * | 2016-11-26 | 2017-05-31 | 毛竹青 | A kind of method that potassium chlorate is produced with calcium carbide waste slag |
Non-Patent Citations (2)
| Title |
|---|
| 刘兰泉等: "《环境保护概论》", 31 January 2010, 华中科技大学出版社 * |
| 赵学军等: "电石渣资源化综合利用发展现状", 《中国氯碱》 * |
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Application publication date: 20180828 |
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| RJ01 | Rejection of invention patent application after publication |