CN101531339A - Method for improving recovered iodine quality in phosphorite - Google Patents
Method for improving recovered iodine quality in phosphorite Download PDFInfo
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- CN101531339A CN101531339A CN200910102519A CN200910102519A CN101531339A CN 101531339 A CN101531339 A CN 101531339A CN 200910102519 A CN200910102519 A CN 200910102519A CN 200910102519 A CN200910102519 A CN 200910102519A CN 101531339 A CN101531339 A CN 101531339A
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Abstract
This invention discloses a method for improving recovered iodine quality in phosphorite, including following steps: pumping an absorbing liquid into an iodine analysis groove, cooling to 25 to 40 degrees centigrade; starting a stirrer, wherein the rotating speed of the stirrer is 35 to 40 rps/min, adding medicine (oxidizer) from the bottom part and the top part, the total flow rate being 50 to 80 ml/min, keeping the rotating speed of the stirrer and adding until the flow rate is constant; when the medicine needed to be added reaches 2/3 of the medicine total quantity or the temperature of the absorbing temperature is 35 to 40 degrees centigrade; reducing the rotating speed of the stirrer to 25 to 30 rps/min until there is no the medicine; stopping stirring, growing the grain for 1 to 2 days; then filtering, cleaning and packaging in vacuum. The iodine obtained by this invention has remarkable metal luster, low mpurity and low content of moisture content and is in the shape of grain.
Description
Technical field
The present invention relates to chemical field, relate in particular to and improve the method that reclaims iodine quality in the phosphorus ore.
Background technology
Iodine is the basic raw material of making inorganic or organic iodide, is again the requisite nutritive element of human body and plant, is widely used in medicine, agricultural, dyestuff, controls gold, synthetic rubber, national defence and sophisticated technology field.Iodine often is present in the multiple Mineral resources with the form of associated minerals, fails to obtain preferably to utilize because grade is low, and world's iodine industry at present mainly relies on carries iodine from seawater.Elemental iodine is atropurpureus, glossiness solid, has the characteristic of metalloid, easily distillation, and product mostly is particulate state.And the iodine that extracts from phosphorus ore is difficult to crystallization, because impurity is more in the phosphorus ore, fluorine especially has a strong impact on the quality of iodine, has limited iodine utilization in the product in the middle of medicine, food, chemical industry.The production method of the iodine that from phosphorus ore, extracts at present be Biodine after iodine content reaches certain requirement, in solution, add medicament (oxygenant), the iodine oxidation is come out, allow the iodine spontaneous nucleation grow up then, refilter separation.Powdered, the no metalluster of iodine product, impurity is many, moisture content is big, iodine product of poor quality, of low grade.
Summary of the invention
The method of iodine quality is provided in the raising phosphorus ore that a kind of iodine that obtains that the objective of the invention is to overcome above-mentioned shortcoming and provide has tangible metalluster, becomes particulate state, impurity is low, moisture content is little.
A kind of method that reclaims iodine quality in the phosphorus ore that improves of the present invention comprises the steps:
(1) absorption liquid is pumped into analyses the iodine groove, be cooled to 25～40 ℃;
(2) start agitator, agitator speed is 35～40rps/min, begins to add medicament (oxygenant), is divided into bottom and 2 addings in top, and total flux is 50～80ml/min, keeps agitator speed and adds constant flow;
When (3) 2/3 or the absorption liquid temperature that reaches the medicament total amount when the pharmaceutical quantities that adds as required surpassed 35～40 ℃, reductions agitator speed was 25～30rps/min, adds up to medicament to finish, and stops stirring, growing the grain 1～2 day;
(4) vacuum filtration then, cleaning, packing.
Above-mentioned a kind of method that reclaims iodine quality in the phosphorus ore that improves, wherein: absorption liquid iodine content 〉=50g/l.
The present invention compares with prior art, as can be known from the above technical solutions, cool off, change stirring intensity, change medicament adding method by lowering the temperature, prolong integrated approachs such as rearing crystal time, employing vacuum filtration, the iodine product of producing has tangible metalluster, one-tenth particulate state, impurity is low, water content is few.Thereby improve quality product, improve product specification.
Below, further specify beneficial effect of the present invention by embodiment.
Embodiment
Embodiment 1
A kind of method that reclaims iodine quality in the phosphorus ore that improves comprises: amount of iodine is analysed in the iodine groove for the 58.91g/l absorption liquid pumps into, be cooled to 40 ℃; Start agitator, rotating speed is 38rps/min; Begin to add medicament (oxygenant), be divided into bottom and 2 addings in top, total flux is 80ml/min, keeps agitator speed and adds constant flow; When the medicament add-on reach total amount 2/3 the time, the reduction agitator speed is 28rps/min, adds up to medicament to finish, and stops to stir, growing the grain began to carry out vacuum filtration, cleaning, packing after 1 day in analysing the iodine groove.
Embodiment 2
A kind of 7 methods that reclaim iodine quality that improve in the phosphorus ore comprise: with amount of iodine is that the absorption liquid of 62.0g/l pumps into and analyses in the iodine groove, is cooled to 25 ℃; Start agitator, rotating speed is 35rps/min; Begin to add medicament (oxygenant), be divided into bottom and 2 addings in top, total flux is 60ml/min, keeps agitator speed and adds constant flow; When the absorption liquid temperature surpassed 40 ℃, the reduction agitator speed was 25rps/min, added up to medicament to finish, and stopped to stir, and growing the grain began to carry out operations such as vacuum filtration, cleaning, packing after 2 days in analysing the iodine groove.
Embodiment 3
A kind of method that reclaims iodine quality that improves in the phosphorus ore comprises: with amount of iodine is that the absorption liquid of 50.0g/l pumps into and analyses in the iodine groove, is cooled to 40 ℃; Start agitator, rotating speed is 40rps/min; Begin to add medicament (oxygenant), be divided into bottom and 2 addings in top, total flux is 50ml/min, keeps agitator speed and adds constant flow; When the absorption liquid temperature surpassed 35 ℃, the reduction agitator speed was 30rps/min, added up to medicament to finish, and stopped to stir, and growing the grain began to carry out operations such as vacuum filtration, cleaning, packing after 2 days in analysing the iodine groove.
The test-results table of three embodiment
| Content (%) | Iodine (I) | Fluorine (F) | Sulfuric acid (SO 4 2-) | Non-volatile matter | Chlorine and bromine (Cl+Br) | The crystallization time spent | Remarks |
| Embodiment 1 | 87.44 | 0.0001 | 0.0014 | 0.039 | 0.0006 | 72h | It is few to have metalluster, shaping particles, moisture. |
| Example example 2 | 89.07 | 0.0003 | 0.0056 | 0.047 | 0.0039 | 76h | Has tangible metalluster, big, the water of particle |
| Divide less. | |||||||
| Example example 3 | 88.35 | 0.0005 | 0.0047 | 0.045 | 0.0045 | 79h | Have tangible metalluster, particle is big, moisture is less. |
By last table data as seen, operate with the controlling index parameter according to present method and can obtain crystallization effect preferably, quality product is greatly improved, and fluorine drops to several ppm by original hundreds of ppm, and other index all is higher than the requirement of country to iodine.Have tangible metalluster in appearance, particulate state is better, moisture content is few, quality is significantly improved.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (2)
1, a kind of method that reclaims iodine quality in the phosphorus ore that improves comprises the steps:
(1) absorption liquid is pumped into analyses the iodine groove, be cooled to 25～40 ℃;
(2) start agitator, agitator speed is 35～40rps/min, begins to add medicament (oxygenant), is divided into bottom and 2 addings in top, and total flux is 50～80ml/min, keeps agitator speed and adds constant flow;
When (3) 2/3 or the absorption liquid temperature that reaches the medicament total amount when the pharmaceutical quantities that adds as required surpassed 35～40 ℃, reductions agitator speed was 25～30rps/min, adds up to medicament to finish, and stops stirring, growing the grain 1～2 day;
(4) vacuum filtration then, cleaning, packing.
2, a kind of method that reclaims iodine quality in the phosphorus ore that improves as claimed in claim 1 is characterized in that: absorption liquid iodine content 〉=50g/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102519A CN101531339A (en) | 2009-04-16 | 2009-04-16 | Method for improving recovered iodine quality in phosphorite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102519A CN101531339A (en) | 2009-04-16 | 2009-04-16 | Method for improving recovered iodine quality in phosphorite |
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| CN101531339A true CN101531339A (en) | 2009-09-16 |
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| CN200910102519A Pending CN101531339A (en) | 2009-04-16 | 2009-04-16 | Method for improving recovered iodine quality in phosphorite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502504A (en) * | 2011-10-26 | 2012-06-20 | 瓮福（集团）有限责任公司 | Method for preparing iodized salt from iodine-contained absorption solution |
| CN103435008A (en) * | 2013-08-16 | 2013-12-11 | 甘肃瓮福化工有限责任公司 | Iodine recovering process for improving iodine recovery rate |
| CN103435009A (en) * | 2013-08-16 | 2013-12-11 | 甘肃瓮福化工有限责任公司 | Method for extracting high-quality iodine from low-concentration absorption liquid |
-
2009
- 2009-04-16 CN CN200910102519A patent/CN101531339A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502504A (en) * | 2011-10-26 | 2012-06-20 | 瓮福（集团）有限责任公司 | Method for preparing iodized salt from iodine-contained absorption solution |
| CN102502504B (en) * | 2011-10-26 | 2013-08-07 | 瓮福（集团）有限责任公司 | Method for preparing iodized salt from iodine-contained absorption solution |
| CN103435008A (en) * | 2013-08-16 | 2013-12-11 | 甘肃瓮福化工有限责任公司 | Iodine recovering process for improving iodine recovery rate |
| CN103435009A (en) * | 2013-08-16 | 2013-12-11 | 甘肃瓮福化工有限责任公司 | Method for extracting high-quality iodine from low-concentration absorption liquid |
| CN103435009B (en) * | 2013-08-16 | 2015-09-16 | 甘肃瓮福化工有限责任公司 | A kind of method extracting high-quality iodine from low-concentration absorption liquid |
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Open date: 20090916 |