Production process and equipment of silicon-calcium-potassium fertilizer

Abstract

The invention discloses a production process of a silicon-calcium-potassium fertilizer. The process comprises the following steps: with water insoluble potassium ore and limestone or dolomite serving as raw materials, sequentially smashing, grinding, calcining by using a rotary kiln, cooling by using a cooling machine, smashing and grinding to obtain the silicon-calcium-potassium fertilizer, wherein in the step of calcining in the rotary kiln, the burning zone temperature is between 1150 DEG C and 1400 DEG C and the retention time of the raw materials in the kiln is between 20 minutes and 60 minutes. The invention also discloses equipment adopting the process. Compared with a process of sintering the silicon-calcium-potassium fertilizer in a grinding and block making tunnel kiln, the process disclosed by the invention has the advantages that a preheater system is adopted to preheat, a decomposing furnace is adopted to decompose, the rotary kiln is adopted to calcine and the cooling machine is adopted to cool, so that the production line heat loss and the production cost are greatly reduced, the environmental protection performance is greatly improved and the single line production capacity is increased; water adding and briquetting steps in the sintering process in the tunnel kiln are not required, so that the process is simplified; pulverized coal serves as a fuel, so that the fuel cost is reduced; the labour intensity is greatly reduced, the automation degree is high and the system parameters are measurable and controllable.

Description

technical field [0001] The invention relates to a production process and equipment for silicon calcium potassium fertilizer. Background technique [0002] The absorption of nitrogen, phosphorus and potassium by plants is carried out in proportion, and the three promote each other and cannot replace each other. According to the general principles of fertilization, nitrogen (N): phosphorus (P 2 O 5 ): Potassium (K 2 The reasonable ratio of O) is 1:0.5:0.5, while the current fertilization ratio in my country is 1:0.28:0.1, which leads to a long-term lack of potassium and phosphorus, resulting in a low utilization rate of fertilizers. In addition, my country lacks understanding of the important role of silicon fertilizer in fertilization, resulting in little or no application of silicon fertilizer. These problems restrict the development of agriculture in our country. [0003] The main reason for the shortage of potash fertilizers in my country is that there are very few wa...

AI Technical Summary

Problems solved by technology

According to the general principles of fertilization, nitrogen (N): phosphorus (P 2 o 5 ): Potassium (K 2 The reasonable ratio of O) is 1:0.5:0.5, while the current ratio of fertilization in my country is 1:0.28:0.1, long-term lack of potassium and phosphorus, resulting in low utilization rate of chemical fertilizers

In addition, my country lacks awareness of the important role of silicon fertilizer in fertilization, resulting in very little or no silicon fertilizer application

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