Method for preparing magnesium borate whiskers from magnesite
A technology for magnesium borate crystal whiskers and magnesite, which is applied in the field of preparing magnesium borate crystal whiskers, can solve the problem of easily generating HCl volatile gas or by-products such as sulfate and nitrate, high synthesis temperature of magnesium borate crystal whiskers, and high whisker production. Uneven size and other problems, to achieve the effect of improving resource utilization and production economic benefits, low production cost, and uniform appearance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043]Take 4.22g of magnesite, use the electric resistance furnace to calcine it, raise the temperature to 700oC at a heating rate of 5oC / min and keep it for 1h, then cool down with the furnace. 6.18g of boric acid, 2.92g of sodium chloride, 3.73g of potassium chloride and 180g of deionized water were added to the calcined magnesite. Put agate balls in the slurry and perform high-speed ball milling with a ball mill at a speed of 500 rpm and a milling time of 10 hours. After ball milling, the slurry is placed in a drying oven for drying. Then place the dry slurry in a resistance furnace for calcination. The temperature regime is as follows: raise the temperature to 500°C at a heating rate of 5°C / min and hold for 1 hour, then continue to heat up to 800°C at a heating rate of 4°C / min and hold for 2 hours. Then the temperature was lowered to 600°C at a cooling rate of 4°C / min, and then cooled with the furnace. The cooled product is washed with deionized water and absolute ethano...
Embodiment 2
[0046] Take 4.22g of magnesite and calcinate it in a resistance furnace, raise the temperature to 650°C at a heating rate of 1°C / min and keep it for 2h, then cool down with the furnace. 3.09g of boric acid, 2.92g of sodium chloride and 18g of deionized water were added to the calcined magnesite. Put the agate balls in the slurry and perform high-speed ball milling with a ball mill at a speed of 800 revolutions / min and a milling time of 48 hours. After ball milling, the slurry is placed in a drying oven for drying. Then place the dry slurry in a resistance furnace for calcination. The temperature regime is as follows: raise the temperature to 650°C at a heating rate of 10°C / min and keep it for 5 hours, then continue to raise the temperature to 1150°C at a heating rate of 10°C / min and hold it for 1 hour , and then cooled down to 800°C / min at a rate of 1°C / min, and then cooled with the furnace. The cooled product is washed with deionized water and absolute ethanol, and dried to...
Embodiment 3
[0048] Take 4.22g of magnesite and calcinate it in a resistance furnace, raise the temperature to 950°C at a heating rate of 10°C / min and keep it for 4h, then cool down with the furnace. 15.5g of boric acid, 44.7g of potassium chloride and 270g of deionized water were added to the calcined magnesite. Put agate balls in the slurry and perform high-speed ball milling with a ball mill at a speed of 300 revolutions / min and a milling time of 1 h. After ball milling, the slurry is placed in a drying oven for drying. Then put the dry slurry in a resistance furnace for calcination. The temperature regime is as follows: raise the temperature to 450°C at a rate of 1°C / min and hold for 0.5h, then continue to heat up to 750°C at a rate of 1°C / min and hold 5h, then lower the temperature to 500°C / min at a rate of 10°C / min, and then cool with the furnace. The cooled product is washed with deionized water and absolute ethanol, and dried to obtain the magnesium borate whisker material.
PUM
| Property | Measurement | Unit |
|---|---|---|
| aspect ratio | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More