Method for broadening sintering temperature of lithium iron phosphate and preparation method for lithium iron phosphate
A lithium iron phosphate, sintering temperature technology, applied in chemical instruments and methods, phosphorus compounds, structural parts, etc., can solve the problems of process research, batch fluctuations of lithium iron phosphate materials, few, etc., to achieve complete crystal development , reduced dependence, the effect of reducing the cost of raw materials
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0047] After the raw materials are dried and pretreated, accurately weigh 60.00kg iron phosphate, 4.80kg iron red, 1.08kg ferrous oxalate, 19.50kg lithium carbonate, 13.80kg ammonium dihydrogen phosphate, 7.50kg sucrose and mix them into 120kg deionized Stir in the water stirring mill, control the speed at 100 rpm, spray dry the slurry after stirring for 4 hours, divide the powder into three parts on average, set three temperature sections of the pusher kiln and pass through the pusher kiln (kiln length 40 meters) for calcination, set the temperature of three temperature sections as follows:
[0048] A: 120°C, 200°C, 500°C, 580°C, 680°C, 680°C, 720°C, 720°C, 740°C, 740°C, 600°C, 400°C, 200°C, 50°C;
[0049] B: 120°C, 200°C, 500°C, 580°C, 700°C, 700°C, 740°C, 740°C, 760°C, 760°C, 600°C, 400°C, 200°C, 50°C;
[0050] C: 120°C, 200°C, 500°C, 580°C, 670°C, 670°C, 700°C, 700°C, 720°C, 720°C, 600°C, 400°C, 200°C, 50°C.
[0051] The pushing speed of the push plate is set to 1.2 m / h,...
Embodiment 2
[0055] After the raw materials are dried and pretreated, accurately weigh 2.00kg iron phosphate, 1.60kg iron red, 18.00kg ferrous oxalate, 5.00kg lithium carbonate, 13.80kg ammonium dihydrogen phosphate, 2.50kg sucrose and mix them into 45kg deionized Stir in the water stirring mill, the speed is controlled at 100 rpm, after stirring for 4 hours, the slurry is spray-dried, and calcined through a pusher kiln (the kiln is 40 meters long), and the temperature of each section is set at 120 ° C, 200 ° C ℃, 500°C, 580°C, 680°C, 680°C, 720°C, 720°C, 740°C, 740°C, 600°C, 400°C, 200°C, 50°C, the pushing speed of the push plate is set to 1.2 m / h, sintering After classification, lithium iron phosphate powder is obtained, with excellent performance and stable batches.
Embodiment 3
[0057] After the raw materials have been dried and pretreated, accurately weigh 2.00kg iron phosphate, 16.00kg iron red, 3.60kg ferrous oxalate, 8.75kg lithium carbonate, 25.3kg dihydrogen phosphate, 4.50kg sucrose and mix them into 80kg deionized Stir in the stirring mill of water, the speed is controlled at 100 rpm, after stirring for 4 hours, the slurry is spray-dried, and calcined through a pusher kiln (the kiln is 40 meters long), and the temperature of each section is set at 120°C, 200°C ℃, 500°C, 580°C, 680°C, 680°C, 720°C, 720°C, 740°C, 740°C, 600°C, 400°C, 200°C, 50°C, the pushing speed of the push plate is set to 1.2 m / h, sintering After classification, lithium ferrous phosphate powder is obtained, and the XRD spectrum of the powder is as follows figure 2 shown. from figure 2 It can be seen that the lithium iron phosphate material prepared from the mixed iron source conforms to the spinel result, and the crystal development is complete.
[0058] The scanning ele...
PUM
| Property | Measurement | Unit |
|---|---|---|
| retention rate | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More