Preparation method of high-strength high-titanium pellets
A high-strength, pelletizing technology, which is applied in the preparation of high-titanium pellets and the preparation of high-strength high-titanium furnace-protected pellets, can solve problems affecting the operation of blast furnaces, and achieve the benefits of consolidation, increased strength, and effective Good for fully oxidized effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0050] Example 1:
[0051] When TiO in high titanium pellets 2 When the content is 12%, vanadium-titanium magnetite concentrate and titanium medium ore are used for batching. Among them, the vanadium-titanium magnetite concentrate has a particle size of -0.074mm and the content reaches 80%, and the titanium medium ore particle size -0.074mm has a content of 85%. The specific surface area of the pre-treated mixture reaches 1650cm by wet grinding 2 / g. After the prepared green balls are dried at 450℃, at T=1380.5 (100×12%) -0 . 16 The sintering is carried out under the condition of 925℃, the sintering time is t=34.3ln(100×12%)-69.8=16min, and then the sintering is carried out under the condition of 1225℃, the sintering time is 70min. After sintering, strictly control the cooling rate. When cooling from the highest temperature to 1000°C, keep the cooling rate at 70°C / min, and when cooling from 1000°C to 200°C, cool at a rate of 60°C / min. The chemical composition and strength inde...
Example Embodiment
[0052] Example 2:
[0053] When TiO in high titanium pellets 2 When the content is 25%, vanadium-titanium magnetite concentrate, titanium concentrate, and ordinary magnetite concentrate are used for batching. The batching plan is shown in Table 2. Among them, vanadium-titanium magnetite concentrate particle size -0.074mm content reaches 80%, ordinary magnetite concentrate particle size -0.074mm content reaches 80%, titanium concentrate particle size -0.074mm content reaches 85%, and the specific surface area of the mixture is pretreated by wet grinding. Up to 1800cm 2 / g. After the prepared green balls are dried at 300℃, at T=1380.5 (100×25%) -0 . 16 The sintering is carried out under the condition of 825℃, and the sintering time is t=34.3ln(100×25%)-69.8=40min, and then the sintering is carried out under the condition of 1250℃, and the sintering time is 50min. After sintering, strictly control the cooling rate. When cooling from the highest temperature to 1000°C, keep the coo...
Example Embodiment
[0054] Example 3:
[0055] When TiO in high titanium pellets 2 When the content is 45%, titanium concentrate is used for batching, and the batching plan is shown in Table 2. Titanium concentrate particle size -0.074mm, the content reaches 85%, and the specific surface area of the mixed material reaches 1900cm through wet grinding. 2 / g. After the prepared green balls are dried at 200℃, at T=1380.5 (100×45%) -0 . 16 The sintering is carried out under the condition of 750℃, the sintering time is t=34.3ln(100×45%)-69.8=60min, and then the sintering is carried out under the condition of 1250℃, the sintering time is 40min. After sintering, strictly control the cooling rate. When cooling from the highest temperature to 1000°C, keep the cooling rate at 40°C / min. When cooling from 1000°C to 200°C, cool at a rate of 25°C / min. The chemical composition and strength indicators of the finished pellets are shown in Table 2. It can be seen that the residual FeO content in the pellets is 0.81...
PUM
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap