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Method for preparing silicon-potash fertilizer based on magnesium slag

A technology of silicon-potassium fertilizer and magnesium slag, which is applied in the direction of fertilization equipment, fertilizer mixture, application, etc., can solve the problems such as the large influence of the composition of magnesium slag, and achieve the effects of low raw material cost, simple processing technology, and energy saving

Active Publication Date: 2015-05-27
SHANXI UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing silicon-potassium fertilizer based on magnesium slag in view of the problems that the composition of magnesium slag has a great influence on the composition of magnesium slag and requires high-demand additives in the process of preparing fertilizer from existing magnesium slag.

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  • Method for preparing silicon-potash fertilizer based on magnesium slag
  • Method for preparing silicon-potash fertilizer based on magnesium slag

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Embodiment 1

[0022] The main components of potassium feldspar are: K 2 O 9.45%, SiO 2 62.06%, Al 2 o 3 21.45%, Fe 2 o 3 1.08%;

[0023] The main components of magnesium slag are: SiO 2 25.36%, CaO 59.54%, MgO 2.96%, Al 2 o 3 3.30%, Fe 2 o 3 3.93% etc.

[0024] Preparation method: mix 55% magnesium slag and 45% potassium feldspar powder, melt at 1350°C at high temperature, and keep for 60 minutes after the melting reaction; then take out the melt, water quench, dry, and pulverize to obtain silicon potassium fertilizer.

[0025] The silicon-potassium fertilizer produced by the method has an effective potassium content of 5 percent and an effective silicon content of 30 percent to 40 percent, which is higher than that of silicon-potassium fertilizers on the market. At the same time, it has the characteristics of non-toxic, odorless, non-corrosive, long-lasting fertilizer effect, and not easy to lose. The silicon-potassium fertilizer prepared by the method also contains nutrie...

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Abstract

The invention provides a method for preparing a silicon-potash fertilizer based on magnesium slag and relates to a method for preparing the silicon-potash fertilizer by utilizing magnesium slag. The method comprises the following steps: carrying out high-temperature mixed melting by taking Pidgeon process thermal state reducing magnesium slag as a basic raw material, utilizing Si, Ca, Mg and Fe in thermal state magnesium slag and other beneficial components needed by multiple crops, adding potassium feldspar enriched in K2O, SiO2 and other plant nutrients, thereby preparing the silicon-potash fertilizer which is enriched in multiple plant growth nutrients and has a sustained release function. The method disclosed by the invention has the advantages that the raw material cost is low, the processing technology is relatively simple, and large-scale industrial production is easily realized. Moreover, the method has the comprehensive advantages that the energy consumption is saved, the environment is protected, and high-efficiency resource utilization of the magnesium slag is realized.

Description

technical field [0001] The invention relates to comprehensive utilization of magnesium slag and preparation of silicon-potassium fertilizer, in particular to a method for preparing silicon-potassium fertilizer by utilizing magnesium slag. Background technique [0002] In the Pidgeon smelting process of metal magnesium, 6-10 tons of magnesium slag will be produced for every ton of magnesium produced. Magnesium slag is easy to pulverize, has a high content of fine powder, and is easy to suspend in the air; at the same time, it has strong hygroscopicity, It is easy to compact the soil and seriously damage the natural environment. At present, the recycling methods of magnesium slag mainly include: magnesia slag bricks, wall materials, cement ingredients and desulfurizers. Due to the high content of MgO in magnesia slag and its unstable composition, it is easy to cause the hardened body of magnesia slag bricks, wall materials and cement products to swell and crack, which limits ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 廖洪强姚星亮程芳琴李咏玲范远郭彦霞
Owner SHANXI UNIV
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