Passivating metal magnesium particles and passivating method thereof

A technology for passivating metals and metal magnesium, which is applied in the coating process of metal materials, devices for coating liquid on the surface, coatings, etc., to achieve smooth feeding, ensure transportation, and achieve good desulfurization effects

Active Publication Date: 2014-04-02
JIANGSU ZHENGDA FURNACE CHARGE
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a passivated metal magnesium particle and a passivation method thereof, the purpose of which is to increase the flame retardant time of the passivated metal magnesium particle, increase the ignition point, and increase its stability , to avoid a series of problems caused by uneven coating of metal magnesium particles

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

[0027] In the passivated metal magnesium particles and the passivation method thereof provided in this embodiment, the weight percentage composition of the metal magnesium particles is: Mg: 98.7%, S: 0.002%, Cu: 0.01%, P: 0.001%, H 2 O: 1.2%; the composite rare earth contains the following components by weight percentage: La: 35%, Y: 15%, Sc: 12%, Gd: 11%, Sm: 7%, Pr: 20%.

[0028] The passivation method of this metal magnesium particle is carried out as follows:

[0029] (1) preparation metal magnesium particle passivating agent, passivating agent is sodium tartrate dihydrate, sodium fluoride, phosphoric acid, potassium chromate, and passivating agent is respectively by weight: 5:2:2:1; Metal magnesium particle Put it into the passivation agent, passivation time: 22min, passivation temperature: 85°C, dry the passivated metal magnesium particles, drying time: 145°C, drying time: 20min, then naturally cool to room temperature;

[0030] (2) Coat the surface of metal magnesium ...

Embodiment 2

[0034] In the passivated metal magnesium particles and passivation method thereof provided in this embodiment, the weight percent composition of the metal magnesium particles is: Mg: 98.8%, S: 0%, Cu: 0%, P: 0%, H 2 O: 1.2%; the composite rare earth contains the following components by weight percentage: La: 35%, Y: 15%, Sc: 10%, Gd: 18%, Sm: 7%, Pr: 15%.

[0035] The passivation method of this metal magnesium particle is carried out as follows:

[0036] (1) preparation metal magnesium particle passivating agent, passivating agent is sodium tartrate dihydrate, sodium fluoride, phosphoric acid, potassium chromate, and passivating agent is respectively by weight: 4:2:1:3; Metal magnesium particle Put it into the passivation agent, passivation time: 35min, passivation temperature: 95°C, dry the passivated metal magnesium particles, drying time: 160°C, drying time: 40min, then naturally cool to room temperature;

[0037] (2) Coat the surface of metal magnesium particles cooled to ...

Embodiment 3

[0041] In the passivated metal magnesium particles and passivation method thereof provided in this embodiment, the weight percentage composition of the metal magnesium particles is: Mg: 98.9%, S: 0%, Cu: 0.01%, P: 0%, H 2 O: 1%; the composite rare earth contains the following components by weight percentage: La: 30%, Y: 15%, Sc: 10%, Gd: 20%, Sm: 6%, Pr: 19%.

[0042] The passivation method of this metal magnesium particle is carried out as follows:

[0043] (1) Preparation of metal magnesium grain passivating agent, passivating agent is sodium tartrate dihydrate, sodium fluoride, phosphoric acid, potassium chromate, metal magnesium grain is put into passivating agent, passivation time is: 30min, passivation temperature is : 90°C, dry the passivated metal magnesium particles, the drying time is: 150°C, the drying time is: 32min, and then naturally cool to room temperature;

[0044] (2) Coat the surface of the metal magnesium particles cooled to room temperature with a layer o...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses passivating metal magnesium particles and a passivating method thereof. The passivating metal magnesium particles comprise the following components in percentage by weight: less than or equal to 99% and greater than or equal to 92% of Mg, less than or equal to 0.002% of S, less than or equal to 0.01% of Cu, less than or equal to 0.001% of P and less than or equal to 1.2% and greater than or equal to 0.1% of H2O. The passivating method comprises the following steps: (I), preparing a metal magnesium particle passivator, placing metal magnesium particles in the passivator, and then naturally cooling to room temperature; (II), coating a coating on the surface of the magnesium particles: firstly, coating an organic silicon compound on the surface of the metal magnesium particles, coating magnesium oxide on the surface of the metal magnesium particles, then, coating compound rare earth on the on the surface of the metal magnesium particles, and finally coating graphite powder on the surface of the metal magnesium particles; and (III), sieving the metal magnesium particles cooled to room temperature. The metal magnesium particle passivating layer is uniform in coating, and the storage and use safety is ensured.

Description

technical field [0001] The invention relates to a passivation technology, in particular to a passivation metal magnesium particle and a passivation method thereof. Background technique [0002] Desulfurization of molten iron with magnesium metal desulfurizer has many advantages. At present, some domestic manufacturers such as Baosteel, Benxi Iron and Steel, Wuhan Iron and Steel and other iron and steel enterprises have also begun to adopt this process. The activity of metal magnesium is very high, so it must be passivated before it can be transported, stored and used safely; there are many ways to passivate the surface of metal magnesium, such as organic film protection method, electroplating method, chromate passivation film However, this is generally applicable to the surface treatment of magnesium ingots, not to the surface passivation treatment of magnesium particles used as desulfurization agents. At present, there are two methods for the surface treatment of magnesium...

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): C23C22/37C21C7/064B05D1/38
Inventor 黄正君黄泽铭瞿幼中徐玉林孙锦荣
Owner JIANGSU ZHENGDA FURNACE CHARGE
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