CN102924130B - Production method for enhancing activated rate of selenium in selenium mineral powder - Google Patents
Production method for enhancing activated rate of selenium in selenium mineral powder Download PDFInfo
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- CN102924130B CN102924130B CN201210472793.8A CN201210472793A CN102924130B CN 102924130 B CN102924130 B CN 102924130B CN 201210472793 A CN201210472793 A CN 201210472793A CN 102924130 B CN102924130 B CN 102924130B
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- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 235
- 239000011669 selenium Substances 0.000 title claims abstract description 235
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 233
- 239000000843 powder Substances 0.000 title claims abstract description 85
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 82
- 239000011707 mineral Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000002708 enhancing effect Effects 0.000 title abstract 2
- 235000010755 mineral Nutrition 0.000 claims abstract description 81
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 239000003337 fertilizer Substances 0.000 claims abstract description 29
- 230000004913 activation Effects 0.000 claims abstract description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 58
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000000292 calcium oxide Substances 0.000 claims description 29
- 235000012255 calcium oxide Nutrition 0.000 claims description 29
- 239000012286 potassium permanganate Substances 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000007836 KH2PO4 Substances 0.000 claims 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims 1
- 235000019796 monopotassium phosphate Nutrition 0.000 claims 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims 1
- 229940091258 selenium supplement Drugs 0.000 abstract description 205
- 238000000034 method Methods 0.000 abstract description 15
- 125000003748 selenium group Chemical group *[Se]* 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 5
- BVTBRVFYZUCAKH-UHFFFAOYSA-L disodium selenite Chemical compound [Na+].[Na+].[O-][Se]([O-])=O BVTBRVFYZUCAKH-UHFFFAOYSA-L 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 229960001471 sodium selenite Drugs 0.000 abstract description 4
- 239000011781 sodium selenite Substances 0.000 abstract description 4
- 235000015921 sodium selenite Nutrition 0.000 abstract description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 229940065287 selenium compound Drugs 0.000 abstract 1
- 150000003343 selenium compounds Chemical class 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 235000011649 selenium Nutrition 0.000 description 202
- 230000008569 process Effects 0.000 description 8
- 239000011259 mixed solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 208000019926 Keshan disease Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000014106 fortified food Nutrition 0.000 description 1
- 230000036449 good health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 208000024877 white muscle disease Diseases 0.000 description 1
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- Fertilizers (AREA)
Abstract
The invention relates to a production method for enhancing the activated rate of selenium in selenium mineral powder. The method is characterized by comprising the following steps: a, pretreatment of selenium deposit, b, treatment of selenium mineral powder calcium lime, c, charging reaction, and d, stacking activation. The method has the benefits that abundant selenium deposit resource in Enshi is adopted for preparing, the production is environmentally friendly, pollution-free, safe and innoxious, the selenium deposit can replace sodium selenite to be applied to sodium increasing for crops, and can also serve as raw material for producing selenium compound fertilizer, the selenium deposit resource in Enshi is sufficiently utilized, and the method can be applied to vast areas which are short or low in selenium and areas where secondary selenium agricultural products are produced.
Description
Technical field
The present invention relates to a kind of production method that promotes selenium activation rate in selenium mineral powder.
Technical background
Selenium belongs to rare elements, only accounts for 1/10 of earth crustal mass
6, and in the earth's crust serious skewness, so there are more than 40 the low selenium in countries and regions and scarce selenium in the whole world.Selenium is the essential trace element of animal and human's body, and selenium content deficiency is easily brought out various diseases, will have a strong impact on the healthy of people, affects the development of livestock industry.China 72% county (city) belongs to low or scarce selenium area, from Heilungkiang, there is scarce selenium in various degree Inner Mongol, Gansu, Qinghai to areas such as Sichuan, people's Keshan disease, Kaschin-Beck disease once occurred, and causes the white muscle disease of livestock and poultry popular.In order to meet human body selenium intake, explore the method for good health and a long life, people are finding a safe and effective benefit selenium approach always.And use selenium fertilizer, by Crop, transform, inorganic selenium is become to organoselenium, from food chain realize human-body safety to mend selenium be an effective benefit selenium by way of.
The current both at home and abroad production method of selenium fertilizer, generally adopts Sodium Selenite to carry out after technical finesse foliage-spray as raw material or root is used.Utilize Sodium Selenite as the foliage fertilizer of selenium source, easily run off, spray inhomogeneously, easily crop part is damaged, environment is also caused to certain pollution effect simultaneously.And root is executed also very easily loss, cause the loss of selenium.
Bestow favour and be described as Chinese selenium all, according to geological prospecting measuring and calculating, only Enshi City selenium ore reserves reaches more than 50 hundred million tons, containing selenium grade, is 230-6300mg/kg.Containing selenium yeath and bone coal outcrop area, be 850 square kilometres, be divided into north and south two bands, 2,500,000,000 tons of total reservess, are per tonly up to 84 kilograms containing 500-5500 grams, selenium, the highest 178.8ppm of Selenium in Soil, average 19.11ppm.In state, other county also has abundant selenium ore resources.And domestic other most areas lacks selenium, there is no selenium ore resources source, even if some places are local containing selenium, in its rock, selenium content is also very low, can not reach the grade of exploitation selenium fertilizer, does not possess the condition of producing selenium fertilizer.Bestow favour and but have advantageous selenium ore resources advantage.
Yet the selenium content of bestowing favour in selenium ore deposit is also astable.The people such as Xiao Benjian mention containing selenium grade at 230-6300mg/kg two river fishing dyke selenium ore deposit grade of bestowing favour in < < bestows favour rich selenium resources of medicinal plant and exploitation countermeasure > >, it is inhomogeneous that this explanation selenium ore deposit selenium content in different carbonolytes distributes, for the relatively stable of selenium of controlling in selenium fertilizer should be taked relative technical measures.
In addition, the water soluble selenium in selenium ore deposit is lower.Bright people's (the mineral journal that waits in Korean, the 27th the 1st phase of volume of March in 2007) analysis to selenium form in carbonolyte in the fishing dyke of bestowing favour, no matter be yeath, or in siliceous shale, the variform of selenium distributes and sees, easily water soluble selenium absorbed by crops is relatively low, therefore for improving crop, to the absorption of selenium in selenium ore deposit, should take technical measures to impel the selenium of different shape in selenium ore deposit to be conducive to the easy absorbing state selenium of crop industralization, could realize release and the utilization of selenium.In general selenium mineral powder, there is water soluble selenium to account for full selenium 8--10%
From the above, these features in selenium ore deposit of bestowing favour cause fertile production of selenium to exist selenium content to be difficult to control, the not high disadvantage of product water soluble selenium, has become fertile gordian technique and the bottleneck problem of producing of selenium, for utilizing selenium ore resources produce selenium fertilizer and apply and brought very large impact.
Chinese invention patent, utilizes selenium ore deposit to produce selenium fertile (CN02128368.0) and mentions that the activating technology of the selenium in selenium ore deposit adopts single activator ammonia treatment to improve the content of water soluble selenium, and water soluble selenium can only reach 20%.
In Special Se-contg. mineral fertilizer (CN98100068.1) patent, add a selenium minerals not explanation be where to add a selenium minerals, the technical finesse measure of its selenium minerals is not described simultaneously yet.
Summary of the invention
The activating process deficiency that the object of the invention is water soluble selenium absorbed by crops in the method for existing selenium ore deposit production selenium fertilizer is carried out improved, a kind of active selenium mineral powder of highly water-soluble selenium is provided, aspect activation, has had larger improvement and water-soluble aspect to have larger lifting.
A kind of production method that promotes selenium activation rate in selenium mineral powder of the present invention, is characterized in that comprising following steps: a. selenium ore deposit pre-treatment: dry by crusher in crushing in selenium ore deposit, control moisture content 15% and total selenium 300mg/Kg;
B. selenium mineral powder unslaked lime is processed: by the unslaked lime adding in selenium mineral powder, then be ground into 80 object selenium mineral powders;
C. charging reaction: by KH
2pO
4, NH
4hCO
3, potassium permanganate, be dissolved in 60 ℃ of hot water, mix; Add again hydrogen peroxide, mix; Spray in selenium mineral powder;
D. windrow activation: the selenium mineral powder after reinforced is put into reaction tank, control temperature at 60 ℃-70 ℃; When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
A kind of production method that promotes selenium activation rate in selenium mineral powder of the present invention, it is characterized in that comprising following steps: the ore deposit pre-treatment of a. selenium: the selenium ore deposit of producing containing more than selenium 300mg/Kg of bestowing favour is just broken into 10mm size by jaw crusher, entering 70 ℃ of hotblast stove cartridge type bakers dries, moisture control, 15%, obtains the selenium mineral powder of total selenium 300mg/Kg;
B. unslaked lime selenium mineral powder unslaked lime processing: will add 10%(w/w in selenium mineral powder) mixes, then is broken into 80 object selenium mineral powders through raymond grinding powder;
C. charging reaction: add respectively fertilizer grade KH in thermostatic mixer dissolver
2pO
4, fertilizer grade NH
4hCO
3, potassium permanganate, the 4%(w/w that add-on is selenium mineral powder), 5%(w/w) and 2%(w/w); Be dissolved in selenium mineral powder amount 20%(w/w) 60 ℃ of hot water in, mix; After dissolving, add again the 1.5%(w/w of selenium mineral powder amount) hydrogen peroxide, mix; Spraying enters in selenium mineral powder, controls selenium mineral powder at moisture content 35%, and stirs;
D. windrow activation: the selenium mineral powder after reinforced is put into reaction tank, 60 ℃-70 ℃ of temperature of reaction, because unslaked lime will be emitted heat after absorbing water, will be according to the temperature timely turning cooling of situation of rising in reaction tank, control temperature at 60 ℃-70 ℃, the reaction times is 24 hours; When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
A kind of production method that promotes selenium activation rate in selenium mineral powder of the present invention, adopts unslaked lime to adjust pH value and under slight alkalinity environment, completes the release of selenium, simultaneously the selenium element Ca of insoluble state
2+replace, be conducive to the release of the selenium of chemical combination state, be conducive to transform to water soluble selenium; Fertilizer grade KH
2pO
4and NH
4hCO
3, mainly in Crop process, play collaborative, promoter action, simultaneously K
+play displacement and discharge selenium element.The selenium of the different shape in main promotion selenium mineral powder transforms to water soluble selenium direction; Potassium permanganate and hydrogen peroxide, mainly increase simple substance state selenium to oxide side to conversion, improves its water soluble selenium content.
The invention has the beneficial effects as follows and utilize the selenium ore resources preparation of bestowing favour abundant, produce environment friendly and pollution-free, safety non-toxic, can replace Sodium Selenite to be used for farm crop and increase selenium, also can be used as the raw material of producing selenium Chemical Mixed Fertilizer, to realize the selenium ore resources of bestowing favour to make full use of, for He Dixi district, numerous Que Xi district and the area that produces secondary selenium agricultural-food provide a kind of valency cheap and good-quality selenium source.
A kind of production method that promotes selenium activation rate in selenium mineral powder of the present invention, the selenium mineral powder of producing has that simple, the water-soluble lifting of production technique is large, activation rate advantages of higher, as a kind of selenium mineral powder of high motility rate, at selenium-enriched fertilizer, produce the raw material of providing convenience, in the production of selenium-enriched food and rich selenium industrialization, there is good prospect simultaneously.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated:
Example 1: proportionately the general height of ore deposit reason is not etc. in selenium ore deposit, generally by grade, just divide heap to deposit, by above (namely containing how many milligrams of pure seleniums in per kilogram selenium ore deposit) the selenium ore deposit of the reasonably combined one-tenth of its grade 300mg/Kg, selenium ore deposit is just broken into into 10mm size and is entered hotblast stove cartridge type baker by jaw crusher, about 70 ℃ oven dry of temperature control, detect moisture control and be advisable in 15% left and right, get 2 tons, selenium ore deposit and add 100Kg through jaw crusher, to be just broken into the unslaked lime of 10mm size.Selenium ore deposit through just broken and unslaked lime are broken into 80 object selenium mineral powders through raymond grinding powder.In thermostatic mixer dissolver, add respectively fertilizer grade KH
2pO
4amount is 20Kg, fertilizer grade NH
4hCO
3amount is that 20Kg, potassium permanganate amount are 20Kg, be dissolved in approximately 60 ℃ of hot water of 400Kg, mix, spray in selenium mineral powder, and control selenium mineral powder moisture content 35% left and right, and stir, enter reaction tank and process, 60 ℃-70 ℃ of temperature of reaction, because unslaked lime will be emitted heat after absorbing water, in reaction tank, will control temperature 60 C-70 ℃ according to the timely turning cooling of thermometer temperature rising situation speed, the whole reaction times is about 24 hours.When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
2, example 2: proportionately the general height of ore deposit reason is not etc. in selenium ore deposit, generally by grade, just divide heap to deposit, by above (namely containing how many milligrams of pure seleniums in per kilogram selenium ore deposit) the selenium ore deposit of the reasonably combined one-tenth of its grade 300mg/Kg, selenium ore deposit is just broken into 10mm size by jaw crusher, enter hotblast stove cartridge type baker, about 70 ℃ oven dry of temperature control, control moisture content and are advisable in 15% left and right, get 2 tons, selenium ore deposit and add 120Kg through jaw crusher, to be just broken into the unslaked lime of 10mm size.Selenium ore deposit through just broken and unslaked lime are broken into 80 object selenium mineral powders through raymond grinding powder.In thermostatic mixer dissolver, add respectively fertilizer grade KH
2pO
4amount is 40Kg, fertilizer grade NH
4hCO
3amount is that 40Kg, potassium permanganate amount are 30Kg, hydrogen peroxide 20Kg, and allow former three be dissolved in approximately 60 ℃ of hot water of 450Kg, dissolve the complete hydrogen peroxide that adds, mix and spray in selenium mineral powder, and control selenium mineral powder moisture content 35% left and right, and stir, entering reaction tank processes, 60 ℃-70 ℃ of temperature of reaction, because unslaked lime will be emitted heat after absorbing water, will be according to the timely turning cooling of thermometer temperature rising situation speed in reaction tank, control temperature 60 C-70 ℃, the whole reaction times is about 24 hours.When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
Example 3: proportionately the general height of ore deposit reason is not etc. in selenium ore deposit, generally by grade, just divide heap to deposit, by above (namely containing how many milligrams of pure seleniums in per kilogram selenium ore deposit) the selenium ore deposit of the reasonably combined one-tenth of its grade 300mg/Kg, selenium ore deposit is just broken into into 10mm size and is entered hotblast stove cartridge type baker by jaw crusher, about 70 ℃ oven dry of temperature control, control moisture content and be advisable in 15% left and right, get 2 tons, selenium ore deposit and add 140Kg through jaw crusher, to be just broken into the unslaked lime of 10mm size.Selenium ore deposit through just broken and unslaked lime are broken into 80 object selenium mineral powders through raymond grinding powder.In thermostatic mixer dissolver, add respectively fertilizer grade KH
2pO
4amount is 60Kg, fertilizer grade NH
4hCO
3amount is that 60Kg, potassium permanganate amount are 30Kg, hydrogen peroxide 20Kg, and allow former three be dissolved in approximately 60 ℃ of hot water of 450Kg, dissolve the complete hydrogen peroxide that adds, allow four to become mixed solution even spraying and enter in selenium mineral powder, and control selenium mineral powder moisture content 35% left and right, and stir, entering reaction tank processes, 60 ℃ of temperature of reaction--70 ℃, because unslaked lime will be emitted heat after absorbing water, will be according to the timely turning cooling of thermometer temperature rising situation speed in reaction tank, control temperature 60 C-70 ℃, the whole reaction times is about 24 hours.When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
Example 4: proportionately the general height of ore deposit reason is not etc. in selenium ore deposit, generally by grade, just divide heap to deposit, by above (namely containing how many milligrams of pure seleniums in per kilogram selenium ore deposit) the selenium ore deposit of the reasonably combined one-tenth of its grade 300mg/Kg, selenium ore deposit is just broken into into 10mm size and is entered hotblast stove cartridge type baker by jaw crusher, about 70 ℃ oven dry of temperature control, control moisture content and be advisable in 15% left and right, get 2 tons, selenium ore deposit and add 160Kg through jaw crusher, to be just broken into the unslaked lime of 10mm size.Selenium ore deposit through just broken and unslaked lime are broken into 80 object selenium mineral powders through raymond grinding powder.In thermostatic mixer dissolver, add respectively fertilizer grade KH
2pO
4amount is 70Kg, fertilizer grade NH
4hCO
3amount is that 80Kg, potassium permanganate amount are 40Kg, hydrogen peroxide 30Kg, and allow former three be dissolved in approximately 60 ℃ of hot water of 500Kg, dissolve the complete hydrogen peroxide that adds, allow four to become mixed solution even spraying and enter in selenium mineral powder, and control selenium mineral powder moisture content 35% left and right, and stir, entering reaction tank processes, 60 ℃ of temperature of reaction--70 ℃, because unslaked lime will be emitted heat after absorbing water, will be according to the temperature timely turning cooling of situation speed of rising in reaction tank, control temperature 60 C-70 ℃, the whole reaction times is about 24 hours.When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
Example 5: proportionately the general height of ore deposit reason is not etc. in selenium ore deposit, generally by grade, just divide heap to deposit, by above (namely containing how many milligrams of pure seleniums in per kilogram selenium ore deposit) the selenium ore deposit of the reasonably combined one-tenth of its grade 300mg/Kg, selenium ore deposit is just broken into into 10mm size and is entered hotblast stove cartridge type baker by jaw crusher, about 70 ℃ oven dry of temperature control, control moisture content and be advisable in 15% left and right, get 2 tons, selenium ore deposit and add 180Kg through jaw crusher, to be just broken into the unslaked lime of 10mm size.Selenium ore deposit through just broken and unslaked lime are broken into 80 object selenium mineral powders through raymond grinding powder.In thermostatic mixer dissolver, add respectively fertilizer grade KH
2pO
4amount is 70Kg, fertilizer grade NH
4hCO
3amount is that 100Kg, potassium permanganate amount are 40Kg, hydrogen peroxide 30Kg, and allow former three be dissolved in approximately 60 ℃ of hot water of 500Kg, and dissolve the complete hydrogen peroxide that adds, mixed solution even spraying is entered in selenium mineral powder, and controls selenium mineral powder moisture content 35% left and right.And stir, enter reaction tank and process, 60 ℃ of temperature of reaction--70 ℃, because unslaked lime will be emitted heat after absorbing water, in reaction tank, will control temperature 60 C-70 ℃ according to the temperature timely turning of the situation speed cooling of rising, the whole reaction times is about 24 hours.When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
Example 6: proportionately the general height of ore deposit reason is not etc. in selenium ore deposit, generally by grade, just divide heap to deposit, by above (namely containing how many milligrams of pure seleniums in per kilogram selenium ore deposit) the selenium ore deposit of the reasonably combined one-tenth of its grade 300mg/Kg, selenium ore deposit is just broken into into 10mm size and is entered hotblast stove cartridge type baker by jaw crusher, about 70 ℃ oven dry of temperature control, with thermometer, detect moisture control and be advisable in 15% left and right, get 2 tons, selenium ore deposit and add 200Kg through jaw crusher, to be just broken into the unslaked lime of 10mm size.Selenium ore deposit through just broken and unslaked lime are broken into 80 object selenium mineral powders through raymond grinding powder.In thermostatic mixer dissolver, add respectively fertilizer grade KH
2pO
4amount is 80Kg, fertilizer grade NH
4hCO
3amount is that 100Kg, potassium permanganate amount are 40Kg, hydrogen peroxide 30Kg, and allow former three be dissolved in approximately 60 ℃ of hot water of 550Kg, and dissolve the complete hydrogen peroxide that adds, mixed solution even spraying is entered in selenium mineral powder, and controls selenium mineral powder moisture content 35% left and right.And stir, enter reaction tank and process, 60 ℃ of temperature of reaction--70 ℃, because unslaked lime will be emitted heat after absorbing water, in reaction tank, will control temperature 60 C-70 ℃ according to the temperature timely turning of the situation speed cooling of rising, the whole reaction times is about 24 hours.When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.The active selenium mineral powder drying of above gained moisture is less than 20%, measures its water soluble selenium content, and data are listed in table 1
Full selenium, water soluble selenium content in table 1 selenium mineral powder and active selenium mineral powder
Claims (2)
1. promote a production method for selenium activation rate in selenium mineral powder, it is characterized in that comprising following steps: a. selenium ore deposit pre-treatment: dry by crusher in crushing in selenium ore deposit, control moisture content 15% and total selenium 300mg/Kg;
B. selenium mineral powder unslaked lime is processed: in selenium mineral powder, add unslaked lime, then be ground into 80 object selenium mineral powders;
C. charging reaction: by KH
2pO, NH
4hCO
3, potassium permanganate, be dissolved in 60 ℃ of hot water, mix; Add again hydrogen peroxide, mix; Spray in selenium mineral powder;
D. windrow activation: the selenium mineral powder after reinforced is put into reaction tank, control temperature at 60 ℃-70 ℃; When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
2. according to a kind of production method that promotes selenium activation rate in selenium mineral powder claimed in claim 1, it is characterized in that comprising following steps: the ore deposit pre-treatment of a. selenium: the selenium ore deposit of producing containing more than selenium 300mg/Kg of bestowing favour is just broken into 10mm size by jaw crusher, entering 70 ℃ of hotblast stove cartridge type bakers dries, moisture control, 15%, obtains the selenium mineral powder of total selenium 300mg/Kg;
B. unslaked lime selenium mineral powder unslaked lime processing: will add 10%(w/w in selenium mineral powder) mixes, then is broken into 80 object selenium mineral powders through raymond grinding powder;
C. charging reaction: add respectively fertilizer grade KH2PO4, fertilizer grade NH in thermostatic mixer dissolver
4hCO
3, potassium permanganate, the 4%(w/w that add-on is selenium mineral powder), 5%(w/w) and 2%(w/w); Be dissolved in selenium mineral powder amount 20%(w/w) 60 ℃ of hot water in, mix; After dissolving, add again the 1.5%(w/w of selenium mineral powder amount) hydrogen peroxide, mix; Spraying enters in selenium mineral powder, controls selenium mineral powder at moisture content 35%, and stirs;
D. windrow activation: the selenium mineral powder after reinforced is put into reaction tank, 60 ℃-70 ℃ of temperature of reaction, because unslaked lime will be emitted heat after absorbing water, will be according to the temperature timely turning cooling of situation of rising in reaction tank, control temperature at 60 ℃-70 ℃, the reaction times is 24 hours; When temperature starts to decline, whole reaction is end, obtains active selenium mineral powder.
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| CN105085046A (en) * | 2015-08-18 | 2015-11-25 | 恩施众惠富硒农业科技发展有限公司 | Selenium mineral organic fertilizer and preparation method thereof |
| CN106905000A (en) * | 2017-02-23 | 2017-06-30 | 中国地质大学（武汉） | The dry-forming method of high-efficient selenium-rich soil nutrient hardening agent and its application |
| CN108249976A (en) * | 2018-01-11 | 2018-07-06 | 华中农业大学 | A kind of method using selenium ore deposit production high-concentration water-soluble foliar fertilizer containing selenium |
| CN108276207A (en) * | 2018-01-30 | 2018-07-13 | 余嘉晔 | High-quality selenium-enriched tea leaf and its production method |
| CN110367028A (en) * | 2019-08-20 | 2019-10-25 | 广西大学 | A method of improvement many years Mango Fruit Garden acid soil produces selenium-rich mango |
| CN110432106A (en) * | 2019-08-28 | 2019-11-12 | 广西壮族自治区农业科学院 | A kind of cultural method for the activator and selenium-rich chive that Selenium in Soil activates |
| CN110419404A (en) * | 2019-08-28 | 2019-11-08 | 广西壮族自治区农业科学院 | A kind of activator of vegetable growing special-purpose soil selenium activation |
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| CN1475468A (en) * | 2002-08-14 | 2004-02-18 | 恩施市八龙化肥有限责任公司 | Production of selenium fertilizer using selenium ore |
| CN100390270C (en) * | 2006-07-21 | 2008-05-28 | 江南大学 | Prepn process of selenium-rich edible fungus with activated selenium ore as selenium source |
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