A kind of potassium silicon calcium slow-release compound fertilizer and preparation method thereof
A slow-release compound fertilizer and potassium-silicon technology, which is applied to potash fertilizers, calcium fertilizers, inorganic fertilizers, etc., can solve the problems of potassium and silicon elements being insoluble, unsatisfactory, and insufficient in instant performance, so as to improve the absorption rate and avoid Waste and alleviate the effect of insufficient potassium and silicon resources
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] Get 1g waste muscovite sample, utilize X-ray fluorescence spectrometry to carry out full elemental analysis to mica sample, measure wherein potassium and silicon composition content (potassium 6.24%, silicon 24.95%, silicon content determination is mainly for testing silicon stripping ratio), the mica Put it in a planetary ball mill, and mill it for 1 hour at a speed of 200rpm, 300rpm, 400rpm, 500rpm, and 600rpm respectively. After the ball milling, take 0.05g of the ball milling sample and add it to 100ml of deionized water or 2% citric acid solution. Keep shaking at 250rpm in the medium for 2h, measure the pH value of the deionized aqueous solution after water dissolution, centrifuge the obtained solution, test the content of potassium and silicon in the supernatant and calculate the corresponding dissolution rate.
[0029] Such as figure 1 Shown is the stripping rate diagram of potassium in deionized water and 2% citric acid solution in the sample obtained by ball mi...
Embodiment 2
[0032] A potassium silicon calcium slow-release compound fertilizer, the specific preparation method is as follows:
[0033] Mix waste mica powder and calcium chloride according to the molar ratio of potassium in mica to calcium in calcium chloride: 1:0.33, 1:0.4, 1:0.5, 1:0.66, 1:1, 1:2. (total mass is 1g) placed in a ball mill, mixed and ball milled at 600rpm for 1h, take 0.05g ball milled samples and add them to 100ml deionized water or 2% citric acid aqueous solution respectively, keep shaking at 250rpm in a water bath oscillator for 2h, measure water solubility After checking the pH value of the solution, the resulting solution is centrifuged, and the potassium and calcium content in the supernatant is tested and the dissolution rate of potassium element and the residual rate of calcium in the residue are calculated.
[0034] Such as Figure 4Shown is the dissolution rate figure of potassium element in deionized water and 2% citric acid in the sample obtained after the m...
Embodiment 3
[0039] A potassium silicon calcium slow-release compound fertilizer, the specific preparation method is as follows:
[0040] Mix waste mica powder and calcium chloride according to the molar ratio of potassium in mica to calcium in calcium chloride: 1:0.5, put raw materials (total mass 1g) in a ball mill, mix and ball mill at 600rpm for 1 hour, and take 0.05g After ball milling, add the sample to 100ml of deionized water, keep shaking at 250rpm in a water bath oscillator for 2h, filter the obtained solution, dry the obtained filtrate at 100°C for crystallization, and calcinate the filter residue at 1100°C for 2h. The filter residue was tested by XRD.
[0041] Such as Figure 7 Shown is the XRD spectrum of the supernatant liquid crystals after the sample is dissolved in water and the filter residue after calcination. Since the muscovite structure has been completely destroyed after ball milling, it is necessary to reflect the product by calcining and recrystallizing the filter...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More