Method for producing potassium sulphate and co-producing calcium, magnesium, phosphorus and silicon composite fertilizer by potassium feldspar
A technology of potassium feldspar and potassium sulfate, which is applied in sulfate/bisulfate preparation, application, and fertilization devices, etc., can solve the problems of high labor intensity, high firing temperature, low production efficiency, etc. The effect of lowering the temperature and reducing the firing cost
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Embodiment 1
[0025] Embodiment one: utilize potassium feldspar to produce potassium sulfate and co-produce calcium, magnesium, phosphorus, the method for silicon compound fertilizer comprises the steps:
[0026] 1. Raw material preparation: Prepare the following raw materials according to the weight ratio:
[0027] Potassium feldspar 50, gypsum 18, apatite 20, zinc slag 2, dolomite: 20, total 110;
[0028] 2. Crush and mix into raw meal: firstly crush potassium feldspar, dolomite, apatite and gypsum separately to remove iron, then mix and grind together to 180-200 mesh to form raw meal for use;
[0029] 3. Homogenization: pass the raw meal prepared from the ingredients in step 1 through a 180-mesh sieve to remove iron and then send it to the homogenization storehouse. It is qualified when the deviation of the calcium carbonate titer value is less than 0.2%.
[0030] 4. Firing: Put the raw material with uniform and stable composition after homogenization into the kiln for calcination. If y...
Embodiment 2
[0034] The method for utilizing potassium feldspar to produce potassium fertilizer and co-produce calcium, magnesium, phosphorus and silicon compound fertilizer comprises the following steps:
[0035] 1. Raw material preparation: prepare the following raw materials according to weight ratio: 55 potassium feldspar, 15 gypsum, 18 apatite, 2 zinc slag, 22 dolomite, total 112;
[0036] 2. Crush and mix into raw meal: firstly crush potassium feldspar, dolomite, apatite and gypsum separately to remove iron, then mix and grind together to 180-200 mesh to form raw meal for use;
[0037] 3. Homogenization: pass the raw meal prepared from the ingredients in step 1 through a 180-mesh sieve to remove iron and then send it to the homogenization storehouse. It is qualified when the deviation of the calcium carbonate titer value is less than 0.2%.
[0038] 4. Firing: Put the raw material with uniform and stable composition after homogenization into the kiln for calcination. If the mechanical...
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