Production method of high-concentration water-soluble nitrophosphate fertilizer
A production method, nitrophosphate fertilizer technology, applied in the direction of ammonium nitrate fertilizer, nitrate fertilizer, nitrogen fertilizer, etc., can solve the problems of ineffective utilization of re-production calcium sulfate, increased precipitation of magnesium, aluminum and iron, waste of resources, etc., to meet the needs of water and fertilizer integration , zero-emission resources, and low-cost effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0025] The quality indicator of the phosphate rock 1 of the present embodiment: P 2 o 5 31.2%, CaO 44.4%, F 2.8%, AI 13.2%, Fe 2 (Al 2 O) 3 A total of 2.5%, other impurities; the concentration of nitric acid 2 was 58%.
[0026]Nitric acid 2 and phosphate rock 1 are added to the acidolysis tank according to the stoichiometric ratio of 1.2:1 for acidolysis reaction 3, the acid insoluble matter 5 in the acidolysis solution is separated by precipitation separation 4, and then the acid insoluble matter 5 is completely separated The acid solution is sent to the frozen crystallization 6, and the frozen crystal calcium nitrate 8 is separated from the acid solution and filtered into the calcium nitrate filter 7 for solid-liquid separation. The resulting liquid is the mother liquor 9, and then the mother liquor 9 is sent to the mother liquor defluorination tank 11 In the process, the mother liquor is defluorinated by adding potassium nitrate 10, and the fluorosilicate ions in the m...
Embodiment 2
[0028] The quality index of the phosphate rock 1 of the present embodiment is different from that of embodiment one, and the quality index is: P 2 o 5 32.5%, CaO 47%, F2.9%, AI 6.0%, Fe 2 (Al 2 O) 3 Total 2.2%, other impurities; concentration of nitric acid 2 was 58%.
[0029] Nitric acid 2 and phosphate rock 1 are added to the acidolysis tank according to the stoichiometric ratio of 1.2:1 for acidolysis reaction 3, the acid insoluble matter 5 in the acidolysis solution is separated by precipitation separation 4, and then the acid insoluble matter 5 is completely separated The acid solution is sent to the frozen crystallization 6, and the frozen crystal calcium nitrate 8 is separated from the acid solution and filtered into the calcium nitrate filter 7 for solid-liquid separation. The resulting liquid is the mother liquor 9, and then the mother liquor 9 is sent to the mother liquor defluorination tank 11 In the process, the mother liquor is defluorinated by adding potassi...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com