Small-Scale Chinese Fertilizers Production: Workshop Formula, Ratios & Method
In short: Chinese new way to make granular fertilizers — Industrial Formula, Raw Materials & Process Control. This entry documents a formula & ratios taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 5661 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
New method of making granular fertilizerIn the past, granular fertilizers had low hardness and would cause sticking. After granulation, drying could reduce the water content and increase the strength, but this would require a lot of equipment and investment. In the past, methods of coating particles have been used to prevent particle adhesion and increase research on their slow-acting properties. However, coating methods for fertilizer particles that do not require drying have not been successful.The key to the method introduced in this article is to use coated undried fertilizer particles to remove free water to increase the hardness of the particles. That is to use inorganic powders and inorganic acids containing MgO and SiO2 to react quickly on the surface of the fertilizer particles. The resulting material coats the particles. When the coating rate exceeds 30% by weight, the hardness of the particles will be greatly improved even if it is no longer dried.This method does not require drying of fertilizers containing more than one fertilizer component or fertilizer particles obtained by subjecting fertilizer compositions to humidity control and granulation. Instead, they are coated with inorganic powders containing MgO and SiO2 or reaction products of such powders and inorganic acids to produce dry granular fertilizers with a coating rate of 30% by weight on the surface of the fertilizer particles.There are no certain restrictions on the above-mentioned fertilizers or fertilizer compositions containing more than one fertilizer ingredient. …
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