Method for preparing complex-state mineral element organic liquid fertilizer

Abstract

The invention discloses a method for preparing complex-state mineral element organic liquid fertilizer. The method specifically comprises the steps of 1, evenly mixing well prepared mineral element activation concentrated solution with organic acid concentrated solution according to the mass ratio of 1:1-80, and adding the mixture in water, wherein the volume ratio of the mixed solution to water is 1-50%; 2, adding a complexing agent and conducting stirring with a stirrer, wherein temperature is controlled to be 30-80 DEG C, and time is controlled to be 5-30 min, so that mineral elements can be in a stable complex state; 3, adding an acid-base regulator and water to enable the pH value of the mixed solution to be 5.0-8.0 and specific gravity to be 1.05-1.85, so that the complex-state mineral element organic liquid fertilizer is obtained. The liquid fertilizer contains various nutrient substances good for plants, the suspension effect is stable, nutrients can be provided for crops, and soil can be improved.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a method for preparing organic liquid fertilizers with complex mineral elements. Background technique [0002] According to the study of "Neoproterozoic Microbiological Fossils of Weng'an Phosphate Mine in Guizhou" by Yuan Xunlai and others in "Journal of Geology", it was found in the Neoproterozoic Doushantuo period phosphorites about 600 million years ago in Weng'an County, Guizhou Province. A specially preserved fossil biota - "Weng'an biota". From the overall appearance, the fossil biota mainly includes benthic multicellular algae, cyanobacteria and bacterial fossils, and more than 50 genera and species have been described. They and their living environment organically formed a complete Neoproterozoic Doushantuo stage shallow sea ecosystem. Due to the special phosphate preservation, it contains other unique organic calcium, magnesium, and various trace elements...

AI Technical Summary

Problems solved by technology

However, the thermal processing route of phosphate is facing the challenge of wet-process phosphoric acid production of phosphate due to other high energy consumption, high cost, low resource utilization rate, and serious environmental pollution.

To sum up, if these problems in domestic phosphate rock processing are not solved smoothly, on the one hand, it will lead to the rapid depletion of limited domestic phosphate rock resources and affect the sustainable development of the phosphorus chemical industry; on the other hand, , a large number of medium and low-grade phosphate rock resources have not been fully utilized, and the resource utilization rate is low, resulting in a great waste of non-renewable phosphorus resources

[0004] Chinese patent ZL200910219339, a water-soluble organic liquid fertilizer, Chinese patent ZL201010104125, an organic liquid biological fertilizer and its preparation method, containing amino acid water-soluble fertilizer, humic acid-containing water-soluble fertilizer, water-soluble fertilizer containing plant regulator, these commonly used There are deficiencies and defects in organic fertilizers themselves; some fertilizers have single nutrient content, and some fertilizers contain medium and trace elements but have low effectiveness. Therefore, it is necessary to innovate and develop a highly efficient use of phosphate rock resources, which not only contains complex / chelated mineral elements, Fertilizers that also contain water-soluble organic carbon, that is, supplement soil and crop mineral elements, and provide organic carbon nutrition