Method for preparing activated selenium composite additive
A composite additive and product technology, applied in the field of preparing activated selenium composite additive, can solve the problems of affecting crop photosynthesis, time-consuming and laborious, and high cost
Inactive Publication Date: 2007-05-09
彭祚全 +1
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Problems solved by technology
[0002] There is no similar technology in China. Some scholars crushed selenium-enriched stone coal and directly applied it to farmland, which has a certain effect of increasing selenium, but the effect is slow. The increase in selenium was not obvious at that time, because the selenium in the zero-valent state could not be absorbed and utilized by plants.
Other selenium-increasing technologies use sodium selenite to spray the leaves multiple times, which is time-consuming, labor-intensive, costly, and affects the photosynthesis of crops
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Embodiment Construction
[0010] Weigh 1 kg of selenium-containing (554 mg / kg) coal gangue, crush it to 60 mesh, adjust the pH to 9 with 1:10 ammonia water, add a catalyst to act at 80 ° C for 2 hours, place it at 37 ° C for two days, spread it out and dry it naturally, and measure the water-soluble selenium It was 177.28mg / kg, while the water-soluble selenium of non-activated stone coal powder was only 16.61mg / kg, and the activation rate was increased by more than 10 times, reaching 32%.
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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
1. Technical field [0001] The invention relates to a method for preparing an activated selenium composite additive by utilizing selenium-containing coal gangue. 2. Background technology [0002] There is no similar technology in China. Some scholars crushed selenium-enriched stone coal and directly applied it to farmland, which had a certain effect of increasing selenium, but the effect was slow. The increase in selenium was not obvious at that time, because the selenium in the zero-valent state could not be absorbed and utilized by plants. Other selenium-increasing technologies use sodium selenite to spray the leaves multiple times, which is time-consuming, labor-intensive, costly, and affects the photosynthesis of crops. Inspired by farmers in high-selenium areas who use smoky soil and coal ash as base fertilizer and high selenium content in crops, the invention takes advantage of Enshi's material conditions of the only selenium mine in the world, uses selenium-containing ...
Claims
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IPC IPC(8): C05D9/00
Inventor 彭祚全胥学良
Owner 彭祚全