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Potassium-containing ore for fertilizer and preparation method and application thereof
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A technology for potassium ore and ore, applied in the field of potassium-containing ores for fertilizers, can solve the problems of plants with excessive sodium content, side effects of soil, alkalization, etc., and achieve the effects of improving dissolution purity, improving fertility, and preventing acidification.
Active Publication Date: 2014-11-05
李成哲
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[0006] The main purpose of the present invention is to solve the above-mentioned problem that the existing natural zeolite contains too much sodium, which causes side effects on plants and makes the soil alkalized, and provides a method for preparing potassium-containing ore for fertilizer. Replace it with potassium, improve the solubility purity in the soil, and inhibit the accumulation of sodium in potassium-containing ores such as mordenite or clinoptilolite, so as to avoid excessive sodium content in potassium-containing fertilizers and cause side effects on plants and excessive alkalization of the soil
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Embodiment 1
[0033] See figure 1 As shown, the preparation method of the potassium-containing zeolite for fertilizer of the present embodiment mainly includes steps:
[0034] (a) treating natural potassium-containing ores with ammonium salts;
[0035] (b) heating the ore processed in the above step (a);
[0036] (c) utilizing an aqueous solution of dissolved potassium chloride to process the ore after the above-mentioned step (b);
[0037] (d) heating the ore processed in the above step (c) to obtain potassium-containing ore for fertilizer.
[0038] More specifically, in the above method, at first, in order to remove the sodium ions contained in the natural ore (in this embodiment, natural zeolite-mordenite is selected; in addition, clinoptilolite can also be used to achieve the same technical effect), ammonium Salt treatment to replace the sodium ions with the more prone ammonium ions contained. In this process, the clinoptilolite (or mordenite) with a cation exchange capacity (CEC) o...
Embodiment 2
[0043] In the present embodiment, use natural potassium feldspar as raw material to prepare potassium-containing ore for fertilizer, and the specific operations are as follows:
[0044] Select the natural ore potassium feldspar with an ion exchange capacity (CEC) of about 25meq / 100g, crush it to pass through a 100-mesh sieve, and use NH 4 salt treatment;
[0045] Then, the above-mentioned treated ore is heated to about 600°C in the atmosphere, and the temperature is maintained for about 2 hours;
[0046] Then immerse about 500 g of the above-made ore in 1 L of 5% potassium chloride solution, and stir for about 1 hour at room temperature (15° C. to 35° C.);
[0047] Finally, the above treated ore is heated at about 400° C. to remove moisture to obtain the potassium feldspar for fertilizer in this embodiment, which can be directly used as a potassium fertilizer.
[0048] Potassium and sodium content in the potassium feldspar before and after processing in the present embodimen...
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Abstract
The invention provides a potassium-containing ore for a fertilizer and a preparation method and an application thereof. The preparation method of the potassium-containing ore for the fertilizer comprises the following steps of: (a) utilizing an ammonium salt to process the natural potassium-containing ore; (b) heating the ore after processing in the step (a); (c) utilizing a water solution in which potassium chloride is dissolved to process the ore after processing in the step (b); and (d) heating the ore after processing in the step (c) to get the potassium-containing ore for the fertilizer. The potassium-containing ore obtained by processing according to the method disclosed by the invention has higher potassium content and lower sodium content, and can be used for preparing the fertilizer, improve the dissolution purity in soil, inhibit sodium accumulation in the ore, further buffer the pH value of the soil and prevent the acidification of the soil.
Description
technical field [0001] The present invention relates to a potassium-containing ore for fertilizer and its preparation method and application, in particular to a preparation method of potassium-containing ore for fertilizer, the potassium-containing ore for fertilizer prepared according to the method, and the potassium-containing ore for fertilizer containing the potassium-containing ore for fertilizer. ore fertilizer. Background technique [0002] Potassium (K) is one of the three essential elements for plant growth. In traditional potassium-containing fertilizers, the supply source of potassium is usually plant ash from burning plants or natural minerals containing potassium, or chemically produced potassium chloride or potassium sulfate. Potassium natural bentonite, potassium zeolite diatomaceous earth. [0003] Among the above-mentioned substances, plant ash has poor fertilizer efficiency, and chemical fertilizers made by chemical methods will cause acidification of the...
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