Unlock instant, AI-driven research and patent intelligence for your innovation.

Production process of magnesium carbonate

A production process, magnesium carbonate technology, applied in the direction of magnesium carbonate, pathogenic microbial wastewater treatment, special treatment targets, etc., can solve the problems of excessive heavy metal ions, short reaction time, etc., achieve less heavy metal ions, narrow particle size distribution, The effect of high purity

Pending Publication Date: 2021-05-11
绵阳远达电子材料有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product obtained by this process has high purity and short reaction time, but the heavy metal ions contained in the product exceed the standard

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of production technology of magnesium carbonate, comprises the following steps:

[0023] Step 1, adding magnesium chloride to water, preparing a magnesium chloride solution, purifying the magnesium chloride solution, adding the purified magnesium chloride solution to the reactor, then adding a crystal form control agent, ultrasonication; obtaining a mixed material; the mass ratio of the magnesium chloride to water 1:5; ultrasonic frequency is 35KHz;

[0024] The method for purifying the magnesium chloride solution is as follows: adjust the pH of the magnesium chloride solution to 4 with hydrochloric acid with a concentration of 0.5 mol / L; then add barium chloride and polyvinylpyrrolidone to the magnesium chloride solution, pressurize and sonicate for 60 minutes; filter, The filtrate is the magnesium chloride solution after purification; the molar concentration of the barium chloride is 0.8% larger than the molar concentration of the sulfate ion in the magnesium c...

Embodiment 2

[0032] A kind of production technology of magnesium carbonate, comprises the following steps:

[0033] Step 1, adding magnesium chloride to water, preparing a magnesium chloride solution, purifying the magnesium chloride solution, adding the purified magnesium chloride solution to the reactor, then adding a crystal form control agent, ultrasonication; obtaining a mixed material; the mass ratio of the magnesium chloride to water The ratio is 1:6; the ultrasonic frequency is 35KHz;

[0034] The method for purifying the magnesium chloride solution is as follows: adjust the pH of the magnesium chloride solution to 4 with hydrochloric acid having a concentration of 1 mol / L; then add barium chloride and polyvinylpyrrolidone to the magnesium chloride solution, pressurize and ultrasonicate for 60 minutes; filter, and the filtrate That is, the purified magnesium chloride solution; the molar concentration of the barium chloride is 0.8% larger than the molar concentration of sulfate ions...

Embodiment 3

[0042] A kind of production technology of magnesium carbonate, comprises the following steps:

[0043] Step 1, adding magnesium chloride to water, preparing a magnesium chloride solution, purifying the magnesium chloride solution, adding the purified magnesium chloride solution to the reactor, then adding a crystal form control agent, ultrasonication; obtaining a mixed material; the mass ratio of the magnesium chloride to water 1:5; ultrasonic frequency is 40KHz;

[0044] The method for purifying the magnesium chloride solution is as follows: the pH of the magnesium chloride solution is adjusted to 4 by using hydrochloric acid with a concentration of 1.5 mol / L; then barium chloride and polyvinylpyrrolidone are added to the magnesium chloride solution, pressurized and ultrasonicated for 45 minutes; filtered, The filtrate is the magnesium chloride solution after purification; the molar concentration of the barium chloride is 0.8% larger than the molar concentration of the sulfat...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a production process of magnesium carbonate. The production process comprises the following steps: adding a purified magnesium chloride solution into a reactor, adding a crystal form control agent, and carrying out ultrasonic treatment so as to obtain a mixed material; introducing an atomized ethanol substance into the mixed material of the reactor through carrier gas; injecting a sodium carbonate solution into an injection pump, then adding the sodium carbonate solution into the mixed material in a stirring state at a speed of 150-500 mL / h, continuously carrying out stirring after the sodium carbonate solution is completely added, and then successively carrying out aging, filtering and washing to obtain magnesium carbonate; adding the magnesium carbonate into a ball milling tank, adding stainless steel grinding balls, introducing liquid nitrogen into the ball milling tank, completely immersing the magnesium carbonate and the stainless steel grinding balls in the liquid nitrogen, and carrying out ball milling so as to obtain magnesium carbonate. The production process of magnesium carbonate can prepare the magnesium carbonate with high purity, extremely few heavy metal ions and narrow particle size distribution.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic materials, and in particular relates to a production process of magnesium carbonate. Background technique [0002] Magnesium carbonate is a white odorless powder, which has two common forms: amorphous powder and monoclinic crystal. It has the characteristics of non-combustibility and light texture, and can be used for heat insulation and high temperature resistant fireproof and thermal insulation materials. Asbestos-grade magnesium carbonate is an excellent insulating material, used in shipbuilding and boiler manufacturing, and can also be used in the manufacture of high-grade glass products, magnesium salts, pigments, paints, fireproof coatings, printing inks, ceramics, cosmetics, toothpaste and other daily chemicals and pharmaceutical products, etc. Food-grade magnesium carbonate can be used as a flour additive, and can also be used as a desiccant, color-protecting agent, carrier, anti-c...

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
IPC IPC(8): C01F5/24
CPCC01F5/24C02F2303/04C02F2103/003C01P2006/80C01P2004/61
Inventor 蔚永福汤明松张鹏
Owner 绵阳远达电子材料有限公司