A kind of production method for preparing special fertilizer for ginger by-product of ammonium dihydrogen phosphate

Abstract

The invention relates to the field of chemical technology, in particular to a production method for preparing ammonium dihydrogen phosphate by-product ginger special fertilizer. By changing the temperature and other coefficients of preparing ammonium dihydrogen phosphate by wet-process phosphoric acid, the purity of ammonium dihydrogen phosphate product is improved , at the same time can produce compound fertilizer containing N, P, K compound state, this method can not only improve the purity of ammonium dihydrogen phosphate, the absorption rate of the special fertilizer for ginger produced is good, and the special fertilizer for ginger produced at the same time It can meet the nutritional needs of each period in the growth cycle of ginger, greatly increase the yield of ginger, and is a high-efficiency compound fertilizer.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a production method for preparing ammonium dihydrogen phosphate by-product ginger special fertilizer. Background technique [0002] Ginger, plant of Zingiberaceae Zingiberaceae, also known as "Zingiber officinale"; rhizome with yellow-green flowers and pungent fragrance. Fresh or dried rhizomes can be used as condiments. Ginger is processed as one of the medicinal materials of traditional Chinese medicine. Ginger has the effect of dispelling cold and sweating, so ginger tea can treat colds. It is also one of the commonly used condiments in daily cooking. Ginger, green onion and garlic are called "three major seasonings". [0003] The fertilizer used for planting ginger is generally nitrogen, phosphorus and potassium mixed fertilizer, such as the invention patent of CN10331928A, a kind of special fertilizer for ginger and its preparation method, which includes base f...

AI Technical Summary

Problems solved by technology

[0007] The unabsorbed mixed fertilizer is easy to cause soil compaction. At the same time, the release and loss of the mixed fertilizer is too fast, which will cause the crazy growth of ginger in the early stage. In the later stage, due to the crazy growth of ginger and the soaking of rainwater or the decomposition of fertilizer itself, the nutrients in the soil cannot be supplied to ginger. needs, causing the growth of ginger to slow down or stop

[0008] In the process of producing ammonium dihydrogen phosphate, the purity of ammonium dihydrogen phosphate is not high, and the filtrate also contains a large amount of unprecipitated carbonamide, H 2 PO 4 - 、HPO 4 2- 、PO 4 3- and other substances, the researchers of the present invention have studied the composition content of traditional ginger special fertilizer and the absorption situation of ginger from a large number of prior art documents and many years of exploration and research, and have effectively explored the production of phosphoric acid diphosphate from wet-process phosphoric acid. The special fertilizer for ginger is produced from the filtrate of ammonium hydrogen phosphate, which solves the problems of low purity of ammonium dihydrogen phosphate produced by wet process phosphoric acid and unusable active ingredients in the filtrate. At the same time, the special fertilizer has good absorption rate and controllable release effect. Domestic fertilizer production, no report

Images