CN104261439B - Prepare the method for opticglass saltpetre - Google Patents
Prepare the method for opticglass saltpetre Download PDFInfo
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- CN104261439B CN104261439B CN201410536978.XA CN201410536978A CN104261439B CN 104261439 B CN104261439 B CN 104261439B CN 201410536978 A CN201410536978 A CN 201410536978A CN 104261439 B CN104261439 B CN 104261439B
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- saltpetre
- opticglass
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
- C01D9/08—Preparation by double decomposition
- C01D9/10—Preparation by double decomposition with ammonium nitrate
Abstract
The present invention discloses a kind of method preparing opticglass saltpetre, taking Repone K and ammonium nitrate as raw material, comprises raw material configuration, the obtained KNO of crystallisation by cooling3Work in-process xln, KNO3Work in-process xln rinses, heat melts multiple knot, filter, finished product dehydration, dry, and it is in crystallisation by cooling process, adds crystallization reagent, and described crystallization reagent is potassium nitrate crystals and/or supersaturation saltpetre crystal seed mother liquor or saturated saltpetre crystal seed mother liquor. Adopt traditional double decomposition production technique, add crystallization reagent through crystallisation by cooling and obtain saltpetre work in-process xln, the saltpetre tied mode again and produce is melted again through heat, production technique is simple, the potassium nitrate product foreign matter content produced is low, ionic activity height, it is possible to reach the potassium nitrate product requirement of opticglass.
Description
Technical field:
The present invention relates to a kind of method preparing saltpetre, particularly relate to a kind of method preparing opticglass saltpetre.
Background technology:
Saltpetre is commonly called as nitre, and water white transparency rhomboidal crystal or rhomboidan or white powder, without smelly, nontoxic, having saline taste, refrigerant sense, water absorbability is little, prevented from caking, soluble in water, it is a kind of important inorganization industrial raw material, it is widely used in black powder, fireworks, food preservatives, medically makes diuretic(s), sudorific, and be used as to produce potassium salt of penicillin etc. In recent years along with science and technology development, opticglass Application Areas fast development, and saltpetre improves opticglass, and such as the touch-screen etc. of smart mobile phone panel, computer contact screen, watch case and various electronic product, the starting material that intensity is indispensable.
Current domestic opticglass saltpetre market is general for a long time or based on import saltpetre. This is generally undertaken by raw material of saltpetre ore directly purifying producing acquisition due to import potassium nitrate product, not only foreign matter content is low to adopt this method to prepare the potassium nitrate product that, and the activity of ion is also high, can meet and produce opticglass saltpetre requirement. And the relative comparison of the on the one hand similar saltpetre ore resource of China lacks, the mode taking saltpetre ore as raw material therefore can not be directly taked to carry out producing the potassium nitrate product of opticglass. And the product using current conventional raw material particularly to carry out synthesizing, as used, the saltpetre produced taking Repone K and ammonium nitrate as raw material, one is foreign matter content height, two is that ionic activity is low, it is difficult to meet opticglass, the requirement of particularly high-end opticglass saltpetre.
Therefore, how to utilize existing number of chemical raw material as carried out the product of the saltpetre of synthesizing optical glass taking Repone K and ammonium nitrate as raw material, to meet the market demand of the potassium nitrate product of growing opticglass production, it it is the reality need of current domestic opticglass Production of Potassium Nitrate.
Summary of the invention:
A kind of method preparing opticglass saltpetre of the present invention, taking Repone K and ammonium nitrate as raw material, adopt traditional double decomposition production technique, add crystallization reagent through crystallisation by cooling and obtain saltpetre work in-process xln, melt the saltpetre tied mode again and produce again through heat, production technique is simple, and the potassium nitrate product foreign matter content produced is low, ionic activity height, it is possible to reach the potassium nitrate product requirement of opticglass.
A kind of method preparing opticglass saltpetre of the present invention, taking Repone K and ammonium nitrate as raw material, comprises raw material configuration, the obtained KNO of crystallisation by cooling3Work in-process xln, KNO3Work in-process xln rinses, heat melts multiple knot, filter, finished product dehydration, dry, and it is in crystallisation by cooling process, adds crystallization reagent, and described crystallization reagent is potassium nitrate crystals and/or supersaturation saltpetre crystal seed mother liquor or saturated saltpetre crystal seed mother liquor.
A kind of method preparing opticglass saltpetre of the present invention, heat described in it melts again in knot process and adds purification reagent, and described purification reagent is preferably solution of potassium carbonate.
A kind of method preparing opticglass saltpetre of the present invention, through raw material configuration, after saltpetre reaction soln is made in heating, is controlling Cl in reaction soln��And NH4 +Mass concentration be respectively 16-22%, 7-12%, and cool to adding crystallization reagent when 0-35 DEG C.
A kind of method preparing opticglass saltpetre of the present invention, it is to KNO that described heat of solution is tied again3Work in-process xln, after rinsing, carries out adding purification reagent when concentration that heating for dissolving is supersaturated solution and controls solution is 45-58Be.
The present invention prepares the method for opticglass saltpetre, taking Repone K and ammonium nitrate as raw material, adopt traditional double decomposition producing and manufacturing technique, again through crystallisation by cooling after raw material makes potassium nitrate solution after reacting by heating, add crystallization reagent when crystallisation by cooling and obtain saltpetre work in-process xln, and then saltpetre work in-process xln carried out heat melt multiple knot, melt again in knot process and add purification reagent again carrying out heat, the potassium nitrate product purity height purified is produced through above-mentioned two-step process step, impurity and impurity ion content are few, and production technique is simple, the potassium nitrate product foreign matter content produced is low, ionic activity height, reach the potassium nitrate product requirement of opticglass. this overcome existing traditional taking Repone K and ammonium nitrate and water as raw material, adopt preparing potassium nitrate by means of double decomposition product foreign matter content height, the shortcoming that ionic activity is low, thus prepare the high-quality potassium nitrate product that can be used for opticglass, can the production cost of much slower opticglass saltpetre.
Embodiment: the present invention is described in further detail below in conjunction with specific embodiment.
KCl and NH in the embodiment of the present invention4NO3Starting material are commercial industrial product;
Cl in file of the present invention��And NH4 +Control numerical value represent in the solution " concentration ", in solid crystal represent " massfraction ".
Embodiment 1:
The present embodiment can by existing production craft step carry out also can by following processing step, specific as follows:
(1) raw material configuration: by raw material Repone K and ammonium nitrate and water or process recycled water by a certain percentage namely existing production technique proportioning configure, heating, at the temperature of 80-110 DEG C, saltpetre reaction soln is made in reaction, Cl in control reaction soln��And NH4 +Concentration is respectively 16-22%, 7-12%, obtains mother liquor;
(2) crystallisation by cooling: above-mentioned mother liquor is cooled to 0-35 DEG C, makes KNO3Crystallization, adds crystallization reagent potassium nitrate crystals or supersaturation saltpetre crystal seed mother liquor, obtains KNO when starting to be formed and have crystallization3Work in-process xln, cooling fluid is filtered, and filtered liquid reclaims;
(3) KNO3Crystal rinses: by KNO3On work in-process xln clear water or this post, the water of the low concentration that wheel is discharged after rinsing work in-process rinses, control KNO3The KNO that work in-process xln obtains after rinsing3In crystal, in muriate Cl��For 1-4%, in ammonium salt NH4 +For 1.5-5%, rinse solution is recovered into hold-up vessel;
(4) heat melts multiple knot: to (3) step KNO3The KNO that work in-process xln obtains after rinsing3In crystal, adding water, heating makes it fully to be dissolved as supersaturated solution, and control strength of solution is 45-58Be, and then adds purification reagent solution of potassium carbonate, removes impurity further, obtains the saltpetre supersaturated solution after removal of impurities;
(5) filtering: by the saltpetre supersaturated solution after the removal of impurities in (4) step, after removing the foreign material such as mud slag after filtration, pump enters in cooling crystallizer, be cooled to��30 DEG C after filtration obtain finished product KNO3, through rinsing control KNO3In muriate Cl in crystal��It is 0.01%, in ammonium salt NH4 +For being 0.05%, obtain finished product KNO3;
(6) finished product dehydration, oven dry: by finished product KNO3After carrying out processed to water content��3%, drying process is KNO to product water content��0.1%3Product.
Embodiment 2:
Carrying out with the production method of embodiment 1 and processing parameter, difference is stated as follows, and it is saturated saltpetre crystal seed mother liquor that (2) step adds crystallization reagent, and it is add the saturated solution that purification agent is salt of wormwood that (4) heat melts multiple knot.
Claims (2)
1. prepare a method for opticglass saltpetre, taking Repone K and ammonium nitrate as raw material, comprise raw material configuration, the obtained KNO of crystallisation by cooling3Work in-process xln, KNO3Work in-process xln rinses, hot melting is tied again, filter, finished product dewaters, oven dry, it is characterized in that in crystallisation by cooling process, adding crystallization reagent, described crystallization reagent is potassium nitrate crystals and/or supersaturation saltpetre crystal seed mother liquor or saturated saltpetre crystal seed mother liquor;
Described through raw material configuration, after saltpetre reaction soln is made in heating, Cl in control reaction soln��And NH4 +Mass concentration be respectively 16-22%, 7-12%, and cool to adding crystallization reagent when 0-35 DEG C;
Described heat melts again in knot process and adds purification reagent, and described purification reagent is solution of potassium carbonate.
2., according to a kind of method preparing opticglass saltpetre according to claim 1, it is characterized in that described heat of solution is tied again is to KNO3Work in-process xln, after rinsing, carries out adding purification reagent when concentration that heating for dissolving is supersaturated solution and controls solution is 45-58Be.
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| CN201410536978.XA CN104261439B (en) | 2014-10-13 | 2014-10-13 | Prepare the method for opticglass saltpetre |
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| CN201410536978.XA CN104261439B (en) | 2014-10-13 | 2014-10-13 | Prepare the method for opticglass saltpetre |
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| CN104261439A CN104261439A (en) | 2015-01-07 |
| CN104261439B true CN104261439B (en) | 2016-06-01 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105060317B (en) * | 2015-07-30 | 2016-08-24 | 湖南丹化农资有限公司 | A kind of method being produced high-quality potassium nitrate with ammonium nitrate double decomposition circulation process by potassium chloride |
| CN107117634A (en) * | 2017-05-28 | 2017-09-01 | 赵家春 | A kind of Production of Potassium Nitrate method |
| CN107162022A (en) * | 2017-05-28 | 2017-09-15 | 赵家春 | Production of Potassium Nitrate method |
| CN108423693A (en) * | 2017-05-28 | 2018-08-21 | 江西金利达钾业有限责任公司 | The high yield preparation method of potassium nitrate |
| CN107089672B (en) * | 2017-05-28 | 2019-06-04 | 赵家春 | A kind of optical glass Production of Potassium Nitrate method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659431A (en) * | 2009-09-03 | 2010-03-03 | 赵家春 | Method for preparing potassium nitrate by means of double decomposition |
| CN101973564A (en) * | 2010-11-01 | 2011-02-16 | 赵家春 | Potassium nitrate for fireworks and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659431A (en) * | 2009-09-03 | 2010-03-03 | 赵家春 | Method for preparing potassium nitrate by means of double decomposition |
| CN101973564A (en) * | 2010-11-01 | 2011-02-16 | 赵家春 | Potassium nitrate for fireworks and preparation method thereof |
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Application publication date: 20150107 Assignee: Tengda Jiangxi Industrial Co., Ltd. Assignor: Zhao Jiachun|Zhao Chen Contract record no.: 2016360000008 Denomination of invention: Method for preparing KNO3 (potassium nitrate) for optical glass Granted publication date: 20160601 License type: Exclusive License Record date: 20160712 |
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Effective date of registration: 20160811 Address after: 336000 Yichun economic and Technological Development Zone, Jiangxi Patentee after: Tengda Jiangxi Industrial Co., Ltd. Address before: 336000 Yichun Economic Development Zone, Jiangxi, Yichun Patentee before: Zhao Jiachun Patentee before: Zhao Chen |
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Effective date of registration: 20220408 Address after: 336000 Yichun economic and Technological Development Zone, Jiangxi Patentee after: Golden potassium Technology Co.,Ltd. Address before: 336000 Yichun economic and Technological Development Zone, Jiangxi Province Patentee before: Tengda Jiangxi Industrial Co.,Ltd. |