Pellet and preparation method thereof
A technology for pelletizing and returning ore, applied in the field of blast furnace charge, can solve problems such as increased fuel consumption, fluctuations in sintering production process, and reduced sinter strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0052] According to another typical embodiment of the present invention, a method for preparing pellets is provided, the method comprising:
[0053] S1. Obtain blast furnace return;
[0054] Specifically, to obtain blast furnace rebates, including:
[0055] The rough blast furnace return ore is finely ground by a wet separation and grinding process to obtain the blast furnace return ore. In terms of weight, the blast furnace return ore with a particle size of -200 mesh accounts for more than 80% of the blast furnace return ore, and the moisture content of the blast furnace return ore is less than 10%.
[0056] S2. Mix the blast furnace return ore, pellet concentrate powder, alkalinity regulator and binder to obtain a mixture; wherein, the weight of the blast furnace return ore is 3%-12% of the weight of the entire pellet ore ; The pellet concentrate powder includes magnetite and hematite; the alkalinity regulator is used to control the alkalinity of the pellets to be 1.1 ± 0...
Embodiment 1
[0069] The first step: Finely grind the blast furnace return ore. First, the blast furnace return ore is finely ground to -200 mesh particle size of 83% and moisture content of about 9.5% by ball mill wet separation grinding process.
[0070] The second step: batching: batching magnetite concentrate, hematite concentrate, finely ground blast furnace return ore, slaked lime, and binder according to the quality requirements of the pellets. In parts by weight, there are 3 parts of finely ground blast furnace return ore, 90 parts of magnetite, 4 parts of hematite, 2.10 parts of slaked lime, and 0.9 part of calcium-based bentonite.
[0071] Step 3: Mixing: Fully mix various pellet powders and binders.
[0072] Step 4: Pelletizing: On the disc pelletizing machine, add suitable water to pelletize, and control it at 8.5±0.5%.
[0073] Step 5: Screening of green balls: Use double-layer roller sieves to screen out qualified green balls with a particle size of 8mm-16mm.
[0074] Step 6...
Embodiment 2
[0077] The first step: Finely grind the blast furnace return ore. First, the blast furnace return ore is finely ground to -200 mesh particle size of 85% and moisture content of about 9.8% by ball mill wet separation grinding process.
[0078] The second step: batching: batching magnetite concentrate, hematite concentrate, finely ground blast furnace return ore, slaked lime, and binder according to the quality requirements of the pellets. In parts by weight, there are 4 parts of finely ground blast furnace return ore, 86 parts of magnetite, 7 parts of hematite, 2.05 parts of slaked lime, and 0.95 parts of calcium-based bentonite.
[0079] Step 3: Mixing: Fully mix various pellet powders and binders.
[0080] Step 4: Pelletizing: On the disc pelletizing machine, add suitable water to pelletize, and control it at 8.5±0.5%.
[0081] Step 5: Screening of green balls: Use double-layer roller sieves to screen out qualified green balls with a particle size of 8mm-16mm.
[0082] Step...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com