CN1242078C - Process for innocuous treatment and recovering alumina of aluminium phosphide fumigated slag - Google Patents
Process for innocuous treatment and recovering alumina of aluminium phosphide fumigated slag Download PDFInfo
- Publication number
- CN1242078C CN1242078C CNB2004100203163A CN200410020316A CN1242078C CN 1242078 C CN1242078 C CN 1242078C CN B2004100203163 A CNB2004100203163 A CN B2004100203163A CN 200410020316 A CN200410020316 A CN 200410020316A CN 1242078 C CN1242078 C CN 1242078C
- Authority
- CN
- China
- Prior art keywords
- slag
- fumigated
- gas
- harm
- aluminum phosphide
- Prior art date
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention discloses a method of processing and recovering aluminum oxide from slag fumigated by aluminum phosphide without harm, which belongs to a technology of processing and re-utilizing slag fumigated by aluminum phosphide without harm. The method is characterized in that the technological process comprises the steps as follows: powder slag fumigated by aluminum phosphide is mixed and stirred with excessive water in a container; PH3 gas is collected; when PH3 gas is not released from the reaction, heating and stirring are stopped; a reacting solution is filtered, the filtrate is used repeatedly, and a press cake is dried, crushed and calcined to obtain aluminum oxide. The present invention has the advantages that the consumption of raw materials and energy are low in the whole process of treating slag without harm, and at the time of removing the toxicity of the slag, secondary pollution is not produced. Therefore, the present invention thoroughly solves the problem of the pollution of the slag fumigated by the aluminum phosphide. At the time of realizing no harm of the slag, the aluminum oxide of high economic value is obtained by recycling.
Description
Technical field
The present invention relates to a kind of harmless treatment of aluminum phosphide fumigation residue and reclaim method of alumina, belong to harmless treatment of aluminum phosphide fumigation residue and reutilization technology.
Background technology
In traditional phosphine fumigation insecticidal technology, the circular tablet that compacting under high pressure forms after mixing with sustained release additives such as aluminium phosphide pulvis and paraffin, Magnesium Stearate, ammonium carbamates is a raw material, phosphine gas takes place carry out fumigant insect killing.Poisonous residue after stifling is because difficult treatment adopts underground method of burying to handle usually.
Two patented technologies of " CN:00200474.7 " that the applicant obtained and " CN:00200473.9 ", effectively solved the pulvis problem of aluminum phosphide fumigation raw material, and then for the harmless treatment of aluminum phosphide fumigation residue and reclaim aluminum oxide and created favourable condition.
Summary of the invention
The object of the present invention is to provide a kind of harmless treatment of aluminum phosphide fumigation residue and reclaim method of alumina, this procedure is simple, good economy performance, has not only realized the innoxious of residue, has also realized the utilization again of resource simultaneously.
The present invention is the harmless treatment of a kind of aluminum phosphide fumigation residue of being realized by following technical proposals and reclaims method of alumina.Its technical characterictic comprises following technological process: in container aluminum phosphide fumigation powder residue is mixed with water, be heated to 30 ℃～70 ℃ then, carry out mechanical stirring or feed N
2Or CO
2Gas stirring is collected PH
3Gas; Question response no longer discharges PH
3Behind the gas, stop heating and stirring; Filtering reacting solution, filtrate cycle use, and filter cake is through 80 ℃～120 ℃ common dryings or vacuum-drying 2～12h, pulverizing, and then obtain aluminum oxide through 400 ℃～1300 ℃ roasting 1～5h.
The invention has the advantages that whole residue innocent treatment procedure, raw material and energy consumption are all lower; Removing the toxic while of residue, non-secondary pollution produces, therefore the pollution problem that has solved the aluminum phosphide fumigation residue up hill and dale; When the residue realization was innoxious, renewable resources had obtained having the aluminum oxide of higher economic worth.
Embodiment
The following stated embodiment describes the present invention in detail.In these embodiments, unless otherwise indicated beyond, all per-cents are all by weight.
Embodiment 1
With stifling residue of 100g and 500g water thorough mixing, be heated to 30 ℃, with the flow CO of 1.50L/min
2Gas stirs mixing solutions, does not have PH until solution
3Gas release is come out; Filtering reacting solution, filter cake be in 120 ℃ of dry 2h, and to get the BET specific surface area through 500 ℃, 3h roasting be 280.0m
2.g
-1Aluminum oxide.
Embodiment 2
With stifling residue of 100g and 500g water thorough mixing, be heated to 50 ℃, with the flow CO of 1.50L/min
2Gas stirs mixing solutions, does not have PH until solution
3Gas release is come out; Filtering reacting solution, filter cake be in 80 ℃ of vacuum-drying 2h, and get aluminum oxide through 500 ℃, 5h roasting, and the tem analysis sample is the acicular structure of diameter 1～2nm, length 30～40nm.
Embodiment 3
With stifling residue of 100g and 300g water thorough mixing, be heated to 70 ℃, with the flow N of 1.70L/min
2Gas stirs mixing solutions, does not have PH until solution
3Gas release is come out; Filtering reacting solution, filter cake be in 100 ℃ of dry 12h, and get aluminum oxide through 1000 ℃, 3h roasting, and the tem analysis sample is the acicular structure of diameter 2～4nm, length 40～60nm.
Embodiment 4
With stifling residue of 100g and 500g water thorough mixing, be heated to 50 ℃, with the flow CO of 1.50L/min
2Gas stirs mixing solutions, does not have PH until solution
3Gas release is come out; Filtering reacting solution, filter cake be in 80 ℃ of dry 4h, and to get the BET specific surface area through 1200 ℃, 3h roasting be 60.0m
2.g
-1Aluminum oxide.
Embodiment 5
With stifling residue of 100g and 1500g water thorough mixing, be heated to 50 ℃, with the flow CO of 1.50L/min
2Gas stirs mixing solutions, does not have PH until solution
3Gas release is come out; Filtering reacting solution, filter cake be in 120 ℃ of dry 4h, and get aluminum oxide through 1300 ℃, 1h roasting, and the tem analysis sample is the sheet structure of diameter 50～60nm.
Claims (1)
1. the harmless treatment of an aluminum phosphide fumigation residue and reclaim method of alumina, its feature of this method comprises following technological process: in container aluminum phosphide fumigation powder residue is mixed with water, be heated to 30 ℃～70 ℃ then, carry out mechanical stirring or feed N
2Or CO
2Gas stirring is collected PH
3Gas; Question response no longer discharges PH
3Behind the gas, stop heating and stirring; Filtering reacting solution, filtrate cycle use, and filter cake is through 80 ℃～120 ℃ common dryings or vacuum-drying 2～12h, pulverizing, and then obtain aluminum oxide through 400 ℃～1300 ℃ roasting 1～5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100203163A CN1242078C (en) | 2004-08-16 | 2004-08-16 | Process for innocuous treatment and recovering alumina of aluminium phosphide fumigated slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100203163A CN1242078C (en) | 2004-08-16 | 2004-08-16 | Process for innocuous treatment and recovering alumina of aluminium phosphide fumigated slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598014A CN1598014A (en) | 2005-03-23 |
| CN1242078C true CN1242078C (en) | 2006-02-15 |
Family
ID=34663196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100203163A Expired - Fee Related CN1242078C (en) | 2004-08-16 | 2004-08-16 | Process for innocuous treatment and recovering alumina of aluminium phosphide fumigated slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1242078C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428836B (en) * | 2008-12-17 | 2011-02-02 | 天津大学 | Process and apparatus for producing active aluminum oxide with discontinuous fluidized bed aluminium phosphide hydrolysis |
| CN105642661B (en) * | 2016-03-24 | 2018-09-28 | 浙江工商大学 | A kind of secure processing device and technique of aluminum phosphide fumigation residue |
-
2004
- 2004-08-16 CN CNB2004100203163A patent/CN1242078C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1598014A (en) | 2005-03-23 |
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