Method for co-production of chemical synthetic fertilizer by industrial calcium products

A chemical synthesis and industrial technology, applied in chemical instruments and methods, calcium/strontium/barium compounds, inorganic chemistry, etc., can solve problems such as secondary pollution, and achieve the goal of accelerating enterprise transformation, improving product structure, and reducing solid waste emissions. Effect

Active Publication Date: 2017-03-22
CHONGQING HUAQIANG ECOLOGICAL FERTILIZER IND CO LTD
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the purpose of the present invention is to utilize the raw material slurry method ammonium phosphate production line to produce industrial calcium products and co-produce chemically synthesized fertilizers. And the secondary pollution problem brought to the environment makes full use of calcium resources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for co-production of chemical synthetic fertilizer by industrial calcium products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 Shown, prepare technical grade calcium sulfate and binary chemical synthetic fertilizer according to the following methods:

[0031] 1. Analysis of main components of phosphate rock:

[0032] composition content composition content P 2 o 5

29％ Fe 2 o 3

1.07％ MgO 2.5％ CaO 50％ al 2 o 3

2.3％ acid insoluble matter 6.13％ h 2 o

5％ F -

4.67％

[0033] 2. Mix 1 ton of mineral powder into 1.54 tons of slurry.

[0034] 3. Add 1.54 tons of ore pulp obtained in step 2 and 2628.8 kilograms of nitric acid solution and 3 kilograms of urea with a concentration of 50% in the acidolysis tank in the raw material slurry method production line. The reaction time was 1.5 hours, and the reaction temperature was 60°C.

[0035] 4. After the reaction is completed, filter. The filter residue is sent to the compound fertilizer workshop, and the filtrate is sent to the defluorination tank in the raw ...

Embodiment 2

[0044] Prepare industrial-grade calcium carbonate and chemically synthesized compound fertilizers as follows:

[0045] 1. Analysis of main components of phosphate rock:

[0046] composition content composition content P 2 o 5

27.83％ Fe 2 o 3

0.86％ MgO 2.6％ CaO 48.92％ al 2 o 3

2.27％ acid insoluble matter 6.27％ h 2 o

5％ F -

3.98％

[0047] 2. Mix 1 ton of mineral powder into 1.515 tons of slurry.

[0048] 3. Add 1.515 tons of ore pulp of step 2 gained and concentration of 48% nitric acid solution 2625 kg and 4 kg of urea respectively to the acidolysis tank in the raw material slurry method production line. The reaction time was 2 hours, and the reaction temperature was 58°C.

[0049] 4. After the reaction is completed, filter. The filter residue is sent to the compound fertilizer workshop, and the filtrate is sent to the defluorination tank in the raw material slurry production line.

[0050] 5. A...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for co-production of a chemical synthetic fertilizer by industrial calcium products, and belongs to the field of production of agricultural fertilizers. The method comprises the following steps: preparing phosphorite powder into ore pulp by using a raw material slurry method, reacting the ore pulp with nitric acid, and filtering; feeding filter residues to a compound fertilizer workshop to produce a nitrohumic acid compound fertilizer; adding sodium nitrate in the filtrate to remove fluoride; centrifugally dehydrating; drying the filter residues to prepare sodium fluosilicate; adding ammonium sulfate, potassium sulphate or potassium carbonate in the filtrate to deposit calcium; then filtering; preparing the industrial calcium products from the filter residues; and neutralizing, concentrating, guniting, drying, cooling, enveloping, metering and packing the filtrate to obtain the chemical synthetic fertilizer.

Description

technical field [0001] The invention relates to a method for producing chemically synthesized fertilizers and industrial calcium products using a slurry method ammonium phosphate production line, which belongs to the field of agricultural fertilizer production, and specifically relates to a method for decomposing phosphate rock with a certain concentration of nitric acid solution on a material method production line Slurry, then SO 4 2- or CO 3 2- Water-soluble compounds containing the above ions make Ca 2+ Precipitation is formed, washed and purified, and then dried to obtain calcium products such as industrial grade calcium sulfate and calcium carbonate; the clear liquid is used to prepare chemically synthesized fertilizers. Background technique [0002] The slurry method ammonium phosphate production process usually uses sulfuric acid to decompose phosphate rock, and the slurry is neutralized, concentrated, sprayed, granulated, and dried to realize the production of m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46C01F11/18C05B11/06C01B33/10
CPCC01B33/103C01F11/181C01F11/46C01P2006/80C05B11/06
Inventor 谢光强刘成斌蔡昆罗志夏云赵启敏张睿梁玻
Owner CHONGQING HUAQIANG ECOLOGICAL FERTILIZER IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap