May I ask, what fertilizers can be produced in large quantities using sulfuric acid?

Sulfuric acid can be used as a modifier in rice seedling beds; it is needed for creating acidic soil in such contexts, and it is also used in ammonia granulation processes, though I am not familiar with this and am just starting to work with it

Sulfuric acid seems to lack nutrients, but fertilizers are essential; sulfuric acid can be used to decompose phosphate rocks to produce wet phosphoric acid, which is the most important raw material for the phosphorus fertilizer and compound fertilizer industries

Sulfuric acid is one of the important products in the basic chemical industry. The types of fertilizers it can produce include: 1. Those used in the production of ammonium sulfate (commonly known as sulfuric ammonia or fertilizer powder) and superphosphate (commonly known as superphosphatic lime or ordinary phosphate), and the production of both of these fertilizers requires large amounts of sulfuric acid. 　　2NH3 + H2SO4 ==== (NH4)2SO4. To produce one ton of sulfuric acid, 760 kg of sulfuric acid is required (calculated as 100%). To produce one ton of superphosphate, 360 kg of sulfuric acid is needed. 2. Sulfur-based compound fertilizers: A new production process for sulfur-based compound fertilizers via conversion-nitration has been developed in China, using phosphate rock, sulfuric acid, potassium chloride, urea, and ammonia as raw materials. This process features readily available raw materials, low equipment investment, a simple process flow, low load on the drying system, low energy consumption, low product costs, and good economic benefits. The sulfur-based compound fertilizer produced using this process is synthesized chemically rather than through physical mixing, resulting in a good phase structure of the product and stable chemical composition. To produce one ton of sulfur-based compound fertilizer, 0.193 tons of phosphoric acid, 0.175 tons of sulfuric acid, 0.239 tons of potassium chloride, 0.133 tons of liquid ammonia, and 0.035 tons of urea are required; simultaneously, 0.27–0.29 tons of hydrochloric acid is produced as a by-product.

Sulfuric acid, potassium sulfate, etc. Additionally, sulfur is a medium-element required by plants

4# It isn’t stated that, in essence, sulfuric acid cannot be used as a fertilizer. Strictly speaking, sulfuric acid is one of the raw materials used in the production of fertilizers. Phosphorus-based fertilizers are nowadays almost always produced by first decomposing phosphate rocks with sulfuric acid to obtain phosphoric acid, and then using that to create the fertilizers. Its use in fertilizers is mainly for the production of phosphoric acid. Phosphoric acid is then used to produce other fertilizers, such as ammonium phosphate and calcium phosphates. As for other fertilizers, there are hardly any; phosphorus fertilizers are the main ones produced.

The drop in the price of phosphate fertilizers at the end of last year was caused by a decline in the price of sulfur, which triggered a major upheaval in the fertilizer industry

It can be used to make sulfur-based compound fertilizers, as well as potassium magnesium sulfate compound fertilizers.

**According to the standard \"Fertilizers and Soil Conditioners,\" sulfuric acid can be used as a soil conditioner in alkaline soils. The United States has precedents for its use. Calcium, magnesium, and sulfur are the three major medium-element nutrients required by crops. Chinese standards do not specify their levels, but some **do indicate them. In India, the price of each sulfur atom is 60% of the price of each nitrogen atom (this is data from many years ago; I’m not sure what the current figure is), and it is calculated accordingly. Therefore, from the perspective of providing sulfur, sulfuric acid can also be called a sulfur fertilizer. Sulfuric acid is also known as the mother of the chemical industry. The first nitrogen fertilizer produced in China was ammonium sulfate, at the Yongli Ammonia Plant (the predecessor of today’s Nanhua Company); therefore, the standard nitrogen fertilizer is ammonium sulfate. When sulfuric acid reacts with phosphate rock (calcium fluorophosphate), the simplest product is ordinary superphosphate (SSP); wet phosphoric acid can also be produced. When phosphoric acid reacts with liquid ammonia, monoammonium phosphate (MOP) and diammonium phosphate (DAP) can be manufactured ； Potassium sulfate can be produced from sulfuric acid and potassium chloride in a Mannheim reactor. In the production of compound fertilizers, sulfuric acid can be used to prepare binders for use in the granulation process.

It can mainly produce superphosphate, double superphosphate, monoammonium phosphate, diammonium phosphate, ammonium sulfate, potassium sulfate, and triple-composite fertilizers produced by the amino acid method.

This post was last edited by lij1887 on 2009-12-19 at 19:50. There are very few fertilizers produced directly from sulfuric acid; sulfuric anhydride is also produced as a by-product of environmental protection and recycling processes. Moreover, the amount of ammonium sulfate used is limited – only 1.5 million tons are produced nationwide each year, with 40% of that being exported. It is mainly used in the textile industry and as an extractant for rare earth elements. Sulfuric acid is primarily used in the production of phosphoric acid, which is then used to make phosphate fertilizers, compound fertilizers, or utilized directly in industry. A small amount of sulfuric acid is used in the production of potassium sulfate (a potassium fertilizer), as chloride ions are harmful to many crops; sulfate ions are used as a substitute for chloride ions.