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

High-activity magnesite powder and manufacturing method thereof and method for reclaiming nickel cobalt from laterite nickel ores

A technology of magnesite powder and manufacturing method, which is applied in the direction of magnesium carbonate, process efficiency improvement, etc., can solve the problem of low chemical activity of light-burned magnesium powder, and achieve the effects of environmental protection, environmental friendliness and low price

Inactive Publication Date: 2013-01-16
广西银亿新材料有限公司
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the deficiencies in the prior art, the invention provides a kind of high-activity magnesite powder product and manufacturing method, also has the method for reclaiming nickel-cobalt from laterite nickel ore with this high-activity magnesite powder, the purpose of the invention is to improve existing Some light-burned magnesium powders have low chemical activity

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
  • High-activity magnesite powder and manufacturing method thereof and method for reclaiming nickel cobalt from laterite nickel ores
  • High-activity magnesite powder and manufacturing method thereof and method for reclaiming nickel cobalt from laterite nickel ores
  • High-activity magnesite powder and manufacturing method thereof and method for reclaiming nickel cobalt from laterite nickel ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0048] Embodiment 1~3, comparative example 1~3:

[0049] After the natural magnesite is ore-dressed, pulverized, and then all passed through 600 mesh (-23 μm), 800 mesh (-18 μm), and 400 mesh (-35 μm) sieve, it is respectively used as the test powder of embodiments 1 to 3, and then according to the table The test conditions of 1 were calcined under the condition of isolated air to obtain high-activity magnesite powder, and the iodine absorption value data in the table were measured, and the powders were slowly added into 1 liter of ingredients respectively under stirring, as shown in table 2. In the glass beaker of the solution, neutralize the nickel ions in the precipitation solution. The liquid in the glass beaker is kept at 60°C until the pH of the solution is stable at 8.0. The total weight of the consumed powder is obtained, and the obtained nickel hydroxide precipitate is Analyze the total nickel amount wherein, divide the total weight of the consumed powder by the total...

Embodiment 4～6

[0062] Take the filtrate after the initial nickel precipitation, its composition is shown in Table 6, and carry out the secondary nickel precipitation test.

[0063] Table 6 Filtrate composition data after nickel precipitation for the first time

[0064] Ni

[0065] The filtrate after the initial nickel precipitation is kept at 45°C, and while stirring continuously, slowly add the high-activity magnesite powder of the present invention, the pH value of the solution rises from about 8.0 to about PH8.8, and a small amount of hydrogen peroxide is added, The stable pH value is about PH8.8, and the stable time is about half an hour. After filtration, the filtrate and filter residue are shown in Table 7 and Table 8.

[0066] Table 7 secondary nickel precipitation filtrate composition data (g / L)

[0067] example

[0068] Table 8 secondary nickel precipitation slag composition data (%)

[0069] example

[0070] It can be seen from Table 7 that at this...

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 diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses high-activity magnesite powder and a manufacturing method thereof and a method for reclaiming nickel cobalt from laterite nickel ores. The high-activity magnesite powder is magnesite powder subjected to ore dressing, crushing, grading and calcination treatment, has the advantages of fine powder particles, narrow distribution, high chemical activity, low cost and environment friendliness, and can substitute lime, sodium hydroxide and the like for the laterite nickel ore wet smelting and precipitating nickel process, material cost can be greatly reduced, discharge of waste water and waste residues can be reduced, and accordingly environment protection is benefited.

Description

technical field [0001] The invention relates to high-activity magnesite powder, a manufacturing method thereof and a method for recovering nickel and cobalt from laterite nickel ore. Background technique [0002] In my country, the magnesite powder with a calcination temperature ≥ 1600°C is called dead-burned magnesite powder, also known as sintered magnesite, which is mainly used as magnesia refractory material; the magnesite powder with a calcination temperature below 1000°C is called lightly burned powder, which is mainly used Magnesia cement, and chemical industry as a raw material for extracting magnesium salts, steel plants, power plants for desulfurization, etc. [0003] The relationship between the chemical activity of light-calcined magnesium powder and its particle size (aggregate size) before calcination, as well as the calcination temperature and calcination time is extremely complicated. ~900°C, which can meet the needs of the current market, but its chemical ac...

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): C01F5/24C22B23/00C22B3/44C22B3/06
CPCY02P10/20
Inventor 李尚远曹国华和润秀李海燕
Owner 广西银亿新材料有限公司