CN1329303C - Process for preparing high purity gypsum by using waste industrial carbide slag slurry - Google Patents
Process for preparing high purity gypsum by using waste industrial carbide slag slurry Download PDFInfo
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- CN1329303C CN1329303C CNB2004100924345A CN200410092434A CN1329303C CN 1329303 C CN1329303 C CN 1329303C CN B2004100924345 A CNB2004100924345 A CN B2004100924345A CN 200410092434 A CN200410092434 A CN 200410092434A CN 1329303 C CN1329303 C CN 1329303C
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- carbide slag
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Abstract
The present invention relates to a method for producing plaster, particularly to a method for producing high-purity plaster by using waste acetylene sludge slurry and concretely to a technique for producing the high-purity plaster by using the waste acetylene sludge slurry. The present invention comprises a raw material pretreatment procedure, a flue gas desulfurization procedure, a vortex sorting procedure and a dewatering procedure. By a large number of experiments, the present invention skillfully solves the problems that various impurities exist in the acetylene sludge slurry and products after the desulfurization procedure, and a conventional method can not be utilized to carry out separation and purification to produce the plaster with higher purity by using the physical property of the plaster. The purity of the plaster produced by using the present invention can reach more than 90%. The present invention not only obtains the purposes that wastes are recovered and materials are put to good use but also increases the production quality and makes profits of the economic effect and the social effect. The application of the present invention generates positive influence on the environmental protection of China and on that the traditional industry is adjusted and modified to realize the sustainable development strategy.
Description
Technical field
The present invention relates to a kind of method of producing gypsum, refer in particular to and utilize the depleted carbide slag slurry to produce the method for high purity gypsum, be specially a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste.
Background technology
At present, the approach that calcium carbide factory's depleted carbide slag slurry can be recycled is a lot, because wherein contained Ca (OH)
2Concentration higher, so usually reclaimed the raw material be used as flue gas desulfurization, and contained CaSO in the sulfur-bearing slurries after the desulfurization by people
4Concentration higher, so people want to utilize the sulfur-bearing slurries after the desulfurization to produce gypsum always, to reach the purpose of making the best use of everything, yet, because the impurity in the product after carbide slag slurry and the desulfurization is various, the impurity that has almost is fatefulue to the gypsum Effect on Performance, and utilizes ordinary method to separate to purify and then gypsum that production purity is higher hardly may, so people are seeking a kind of good technical scheme and are solving this problem always, but effect and not obvious.
Summary of the invention
The present invention provides a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste in order to utilize the gypsum of depleted carbide slag slurry production of high purity in next life
Technical scheme of the present invention realizes in the following way: a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste, comprise the raw materials pretreatment process, flue gas desulfurization course, the eddy flow preferred process, dehydration, wherein, in the raw materials pretreatment process, choose the carbide slag slurry that solid content is 15%-18%, utilize ordinary method that the content of solid substance is concentrated into 20%-30% then, make the Ca (OH) in the solid substance simultaneously
2Concentration is positioned at the scope of 80%-85%; In flue gas desulfurization course, choose the sulfur-bearing slurries after the desulfurization that solid content is 20%-30%, utilize ordinary method to make the concentration of the gypsum in the solid substance be positioned at the scope of 90%-96%; In the eddy flow preferred process, utilize cyclone separator, be 2-2.9 with proportion, granularity is that the solid substance of 30 μ m-104 μ m is separated from the sulfur-bearing slurries; Utilize ordinary method to make isolated solid substance dehydration then, be finished product.Flue gas desulfurization course is a prior art.
The present invention is through a large amount of experiments; gypsum and other impurity other great mass of data of phase region on physicals have been obtained; on this basis; utilize the impurity in the product after the physical property of gypsum has solved carbide slag slurry and desulfurization dexterously various; can't utilize ordinary method to separate to purify and then the problem of the gypsum that production purity is higher; in the production process that the recycling and the flue gas desulfurization of carbide slag slurry is unified in gypsum; realized the innovation of production technique; utilize the purity of the gypsum of the method for the invention production can reach more than 90%; both reached Waste recovery; the purpose of making the best use of everything; improved quality product again; realized the double wins of economic benefits and social effect; application of the present invention will be to the environment protection of China and the adjustment and the transformation of traditional industry, and then realizes that the strategy of sustainable development produces the active influence effect.
Embodiment
Embodiment 1: a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste, comprise the raw materials pretreatment process, flue gas desulfurization course, the eddy flow preferred process, dehydration, wherein, in the raw materials pretreatment process, choose solid content and be 15% carbide slag slurry, utilize ordinary method that the content of solid substance is concentrated into 20% then, make the Ca (OH) in the solid substance simultaneously
2Concentration is 80%; In flue gas desulfurization course, choose solid content and be the sulfur-bearing slurries after 20% the desulfurization, utilizing ordinary method to make the concentration of the gypsum in the solid substance is 90%; In the eddy flow preferred process, utilize cyclone separator, be 2 with proportion, granularity is that the solid substance of 30um is separated from the sulfur-bearing slurries; Utilize ordinary method to make isolated solid substance dehydration then, be finished product.
Cyclone separator is an existing installation, and Wang Xuanliuqichang produces by sea, Weihai, Shandong.
Embodiment 2: a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste, comprise the raw materials pretreatment process, flue gas desulfurization course, the eddy flow preferred process, dehydration, wherein, in the raw materials pretreatment process, choose solid content and be 18% carbide slag slurry, utilize ordinary method that the content of solid substance is concentrated into 30% then, make the Ca (OH) in the round simultaneously
2Concentration is 85%; In flue gas desulfurization course, choose solid content and be the sulfur-bearing slurries after 30% the desulfurization, utilizing ordinary method to make the concentration of the gypsum in the solid substance is 96%; In the eddy flow preferred process, utilize cyclone separator, be 2.9 with proportion, granularity is that the solid substance of 104 μ m is separated from the sulfur-bearing slurries; Utilize ordinary method to make isolated solid substance dehydration then, be finished product.
Embodiment 3: a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste, comprise the raw materials pretreatment process, flue gas desulfurization course, the eddy flow preferred process, dehydration, wherein, in the raw materials pretreatment process, choose solid content and be 16.5% carbide slag slurry, utilize ordinary method that the content of solid substance is concentrated into 25% then, make the Ca (OH) in the solid substance simultaneously
2Concentration is 82%; In flue gas desulfurization course, choose solid content and be the sulfur-bearing slurries after 25% the desulfurization, utilizing ordinary method to make the concentration of the gypsum in the solid substance is 93%; In the eddy flow preferred process, utilize cyclone separator, be 2.4 with proportion, granularity is that the solid substance of 72 μ m is separated from the sulfur-bearing slurries; Utilize ordinary method to make isolated solid substance dehydration then, be finished product.
Claims (1)
1, a kind of processing method of utilizing the carbide slag slurry production high purity gypsum of industrial waste is characterized in that: comprise the raw materials pretreatment process, flue gas desulfurization course, eddy flow preferred process, dehydration; Wherein, in the raw materials pretreatment process, choose the carbide slag slurry that solid content is 15%-18%, utilize ordinary method that the content of solid substance is concentrated into 20%-30% then, make the Ca (OH) in the solid substance simultaneously
2Concentration is positioned at the scope of 80%-85%; In flue gas desulfurization course, choose the sulfur-bearing slurries after the desulfurization that solid content is 20%-30%, utilize ordinary method to make the concentration of the gypsum in the solid substance be positioned at the scope of 90%-96%; In the eddy flow preferred process, utilize cyclone separator, be 2-2.9 with proportion, granularity is that the solid substance of 30um-104um is separated from the sulfur-bearing slurries; Utilize ordinary method to make isolated solid substance dehydration then, be finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100924345A CN1329303C (en) | 2004-12-24 | 2004-12-24 | Process for preparing high purity gypsum by using waste industrial carbide slag slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100924345A CN1329303C (en) | 2004-12-24 | 2004-12-24 | Process for preparing high purity gypsum by using waste industrial carbide slag slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1654400A CN1654400A (en) | 2005-08-17 |
| CN1329303C true CN1329303C (en) | 2007-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100924345A Expired - Fee Related CN1329303C (en) | 2004-12-24 | 2004-12-24 | Process for preparing high purity gypsum by using waste industrial carbide slag slurry |
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Families Citing this family (4)
| 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 |
| CN101797466B (en) * | 2009-10-14 | 2012-05-23 | 中国科学院过程工程研究所 | Wet flue gas desulphurizing method utilizing carbide slag slurry and device thereof |
| CN102728209A (en) * | 2012-06-28 | 2012-10-17 | 中国科学院过程工程研究所 | Process for promoting oxidation and crystallization of calcium sulfite produced in carbide slag flue gas desulphurization |
| CN109368681A (en) * | 2018-11-22 | 2019-02-22 | 贵州大学 | A kind of technique that carbide slag prepares α high strength gypsum powder |
-
2004
- 2004-12-24 CN CNB2004100924345A patent/CN1329303C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 亚硫酸钙脱硫法在铅烧结烟气脱硫中的应用 童志权等，有色冶炼，第6期 2002 * |
| 从工业废渣制取化学建材石膏的研究 顾毓刚等，上海环境科学，第16卷第7期 1997 * |
| 从工业废渣制取化学建材石膏的研究 顾毓刚等，上海环境科学，第16卷第7期 1997;电石渣的处理及回收利用 张友坤等，聚氯乙烯，第1期 2004;亚硫酸钙脱硫法在铅烧结烟气脱硫中的应用 童志权等，有色冶炼，第6期 2002 * |
| 电石渣的处理及回收利用 张友坤等，聚氯乙烯，第1期 2004 * |
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| CN1654400A (en) | 2005-08-17 |
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Granted publication date: 20070801 Termination date: 20121224 |