Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of hydration synthesis method of magnesium hydroxide slurry with controllable dissolution rate

A technology of magnesium hydroxide and hydration, applied in the direction of magnesium hydroxide, etc., can solve the problems not involved in the regulation of the dissolution rate of magnesium hydroxide slurry, and achieve the effect of reducing agglomeration and increasing the dissolution rate

Active Publication Date: 2021-09-21
DALIAN MARITIME UNIVERSITY
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, relevant research mainly focuses on dispersibility, crystal shape, synthesis efficiency, etc., and does not involve the regulation of the dissolution rate of magnesium hydroxide slurry

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
  • A kind of hydration synthesis method of magnesium hydroxide slurry with controllable dissolution rate
  • A kind of hydration synthesis method of magnesium hydroxide slurry with controllable dissolution rate
  • A kind of hydration synthesis method of magnesium hydroxide slurry with controllable dissolution rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A hydration synthesis method of a solution-controlled hydroxide slurry material, the method comprising the steps of:

[0027] The 4000 g of magnesium oremeton was pulverized to 1250 mesh, 0 ° C calcined for 3 h, and obtained lightly magnesium oxide powder;

[0028] 20 g of the magnesium oxide powder held by the calcined temperature was added to 200 mL of the aqueous hydrant solution, and the mixture was stirred to obtain a magnesium hydroxide slurry;

[0029] The hydration agent solution is a concentration of 1% sodium acetate;

[0030] The homogenate stirring speed is 1300 rpm;

[0031] The hydration reaction time is 0.5 h;

[0032] The magnesium hydroxide was used to determine its dissolution rate, and the control group did not add a pesticide.

Embodiment 2

[0034] A hydration synthesis method of soluble controllable magnesium hydroxide slurry, and the difference from Example 1: The hydration agent solution is ammonium acetate.

Embodiment 3

[0036] A hydration synthesis method of soluble controlled magnesium hydroxide slurry, the difference from Example 1 is that the hydration agent solution is acetic acid.

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 hydration synthesis method of magnesium hydroxide slurry with controllable dissolution rate, belonging to the technical field of preparation of inorganic chemical materials. The method comprises the following steps: crushing magnesite and calcining at 600-900°C for 1-5 hours to obtain light-calcined magnesia powder; adding the light-calcined magnesia powder to the hydration agent solution while maintaining the calcining temperature, with a solid-to-liquid weight ratio of 1 : 5‑20, the anion in the hydration agent solution is: at least one of chloride ion, nitrate ion, sulfate ion, acetate ion and oxalate ion, the cation in the hydration agent solution is: hydrogen ion, At least one of sodium ions, magnesium ions, calcium ions, iron ions, ferrous ions, aluminum ions and ammonium ions, the concentration of the hydration agent solution is 0.5-5%, homogeneous stirring, the homogeneous stirring speed is 800 ‑2000rpm. The invention utilizes the organic combination of heat treatment, chemical treatment and mechanical activation to realize the regulation and control of the dissolution rate of the synthetic magnesium hydroxide slurry.

Description

Technical field [0001] The present invention relates to a solution of soluble controlled magnesium hydroxide slurry hydration synthesis, which belongs to the preparation of inorganic chemical materials. Background technique [0002] Magnesium hydroxide is called "third alkali", which is a green-safe environmental treatment agent, which shows good application prospects in the fields of acid waste gases and wastewater governance, especially the slurry-shaped magnesium hydroxide environmental demand is huge. [0003] The low solubility rate of magnesium hydroxide has its safety advantage, but it also has inefficient drawbacks. For example, in the radiophilic rock, the nitrogen phosphorus recovery process for the sources of magnesium hydroxide, OH - And MG 2+ The slow-release process can control the crystallization reaction in the surface of the magnesium hydroxide, thereby alleviating the fouling of the pipeline due to random crystallization of the bird manurestone; but the dissolut...

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 Patents(China)
IPC IPC(8): C01F5/14
CPCC01F5/14
Inventor 唐晓佳朱益民杜钟原刘淼柏苏北唐乾
Owner DALIAN MARITIME UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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