CN1958521A - Method for preparing activated selenium composite additive - Google Patents
Method for preparing activated selenium composite additive Download PDFInfo
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- CN1958521A CN1958521A CN 200610014395 CN200610014395A CN1958521A CN 1958521 A CN1958521 A CN 1958521A CN 200610014395 CN200610014395 CN 200610014395 CN 200610014395 A CN200610014395 A CN 200610014395A CN 1958521 A CN1958521 A CN 1958521A
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- Prior art keywords
- selenium
- composite additive
- activated
- coal gangue
- ammonia
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
This invention relates to a method for preparing activated selenium composite additive by using selenium-containing coal gangue. The method comprises: pulverizing selenium-containing coal gangue (500 g selenium/kg) twice, ball-milling to about 60 mesh, adding catalyst, activating at 80-100 deg.C in ammonia condition for above 4 h, piling for 2 days, spreading, air-drying until there is no ammonia odor, and packaging quantitatively. The obtained activated selenium composite additive has an activated selenium content of 20-30%, and is rich in other necessary trace elements such as vanadium, molybdenum and chrome. The activated selenium composite additive can be used in tealeaf, soybean, peanut, sunflower, tomato and garlic to increase selenium content by 1-3 times, and has an aftereffect period of 5 years.
Description
One, technical field
The present invention relates to a kind of utilization and contain the method that the selenium coal gangue prepares activated selenium composite additive.
Two, background technology
Domestic still do not have a similar techniques, directly applies the farmland after having the scholar that rich selenium bone coal is pulverized, and certain selenium effect that increases is arranged, but effect slowly, and it is not obvious to increase selenium then, because the selenium plant of 0 valence state can't absorb.Other increases the selenium technology for using repeatedly foliage-spray of Sodium Selenite, wastes time and energy, and the cost height influences the photosynthesis of farm crop.The present invention is subjected to the high selenium zone peasant and makes base fertilizer with smoked soil and coal ash, the high enlightenment of selenium content in the farm crop, the bestow favour material conditions in global unique selenium ore deposit of utilization, it is raw material that employing contains the selenium coal gangue, through explained hereafter activated selenium composite additives such as pulverizing, ball milling, activation, be rich in essential trace elements such as selenium, vanadium, molybdenum chromium, cost is low, effective, increase selenium 1-3 then doubly, the after effect period can reach 5 years.
Three, summary of the invention
The preparation method of a kind of activated selenium composite additive of the present invention is: will contain the coal gangue ball milling after secondary is pulverized about selenium 500mg/kg, reach about 60 orders, under heat 80-100 ℃ and ammonia alkali condition, add catalyst action more than 4 hours, continue to stack two days, spread out air-dry to the smell that does not have ammonia, quantitative package product.The product activation selenium of present technique preparation can reach 20-30%.
A kind of technology of preparing that activates the selenium additive of the present invention realizes by following steps:
1) ore dressing: choose the above coal gangue regional centralized of selenium content 500mg/kg and excavate removal of contamination;
2) pulverize:, stone coal powder is reached about 60 orders through twice continuous pulverizing;
3) activation: breeze enters the activation pond, sprays and mixing with 1: 10 ammoniacal liquor, transfers PH about 9 to add catalyzer, heats to 80-100 ℃, acts on 4 hours, continues to stack two days, spreads out air-dry to the smell that does not have ammonia;
4) detect: adopt 2, activation (water-soluble, plant can directly absorb) selenium should be not less than 100mg/kg in 3-diaminonaphthalene fluorescent method or the atomic absorption spectrometry test sample;
5) packing: adopt the quantitative package of double-deck specialized package thing, be finished product.
Four, embodiment
Take by weighing and contain selenium (554mg/kg) coal gangue 1kg, be crushed to 60 orders, transfer PH 9 with 1: 10 ammoniacal liquor, add catalyzer 80 ℃ of effects 2 hours, put 37 ℃ and spread natural air drying two days later out, the mensuration water soluble selenium is 177.28mg/kg, only is 16.61mg/kg and contrast the stone coal powder water soluble selenium without activatory, activation rate improves more than 10 times, reaches 32%.
Claims (1)
1, a kind of preparation method of activated selenium composite additive: will contain the coal gangue ball milling after secondary is pulverized about selenium 500mg/kg, reach about 60 orders, under heat 80-100 ℃ and ammonia alkali condition, add catalyst action more than 4 hours, continue to stack two days, spread out air-dry to the smell that does not have ammonia, quantitative package product.Technical characterictic: the product activation selenium of present technique preparation can reach 20-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014395 CN1958521A (en) | 2006-06-21 | 2006-06-21 | Method for preparing activated selenium composite additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014395 CN1958521A (en) | 2006-06-21 | 2006-06-21 | Method for preparing activated selenium composite additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1958521A true CN1958521A (en) | 2007-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610014395 Pending CN1958521A (en) | 2006-06-21 | 2006-06-21 | Method for preparing activated selenium composite additive |
Country Status (1)
| Country | Link |
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| CN (1) | CN1958521A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102511280A (en) * | 2011-12-19 | 2012-06-27 | 苏州硒谷科技有限公司 | Method of cultivating selenium-enriched garlic plant material |
| CN101830746B (en) * | 2009-03-09 | 2012-06-27 | 上海园康富硒生物科技有限公司 | Method for producing selenium-enriched organic fertilizer |
| CN101786925B (en) * | 2010-01-22 | 2012-07-04 | 西北农林科技大学 | Generation method of organic selenium and production method of selenium-rich agricultural product |
| CN106747680A (en) * | 2017-03-10 | 2017-05-31 | 湖北民族学院 | The preparation method of active element selenium and its selenium fertilizer in a kind of alkaline process active coal gangue |
-
2006
- 2006-06-21 CN CN 200610014395 patent/CN1958521A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830746B (en) * | 2009-03-09 | 2012-06-27 | 上海园康富硒生物科技有限公司 | Method for producing selenium-enriched organic fertilizer |
| CN101786925B (en) * | 2010-01-22 | 2012-07-04 | 西北农林科技大学 | Generation method of organic selenium and production method of selenium-rich agricultural product |
| CN102511280A (en) * | 2011-12-19 | 2012-06-27 | 苏州硒谷科技有限公司 | Method of cultivating selenium-enriched garlic plant material |
| CN106747680A (en) * | 2017-03-10 | 2017-05-31 | 湖北民族学院 | The preparation method of active element selenium and its selenium fertilizer in a kind of alkaline process active coal gangue |
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