Nickel-containing steel production process
A production process and technology for nickel steel, applied in the field of nickel-containing steel production process, can solve the problems of limited cost reduction and lack of good optimization, and achieve the effect of saving a lot of raw materials, optimizing production process, and improving production efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0027] Taking the preparation of nickel-containing steel with a nickel content of 0.2% as an example, the production process of this nickel-containing steel includes the following steps:
[0028] (1) Preparation of molten iron
[0029] Obtain 4 tons of molten iron at a temperature of 1470°C in a blast furnace;
[0030] (2) Transfer molten iron
[0031] Add the molten iron obtained in step (1) into the electric furnace with a ladle;
[0032] (3) Add laterite nickel ore
[0033] Adding nickel content to the electric furnace described in step (2) is 2% lateritic nickel ore 400kg, making it fully contact with molten iron;
[0034] (4) Smelting
[0035] The molten iron and laterite nickel ore in step (3) were heated to 1550°C and kept at 1550°C for 10 minutes.
[0036] In the above-mentioned embodiment:
[0037] In the step (1), the mass percent content of the components of the obtained molten iron is: 2.7% Si, 4.1% C, and the balance is Fe;
[0038] In the step (3), the par...
Embodiment 2
[0043] Taking the preparation of nickel-containing steel with a nickel content of 0.2% as an example, the production process steps of this nickel-containing steel are the same as in Example 1, except that in the step (3), the added laterite nickel ore is pre-reduced nickel-containing minerals; the steps of carrying out pre-reduction treatment on lateritic nickel ore are:
[0044] (3.1) After pulverizing the laterite nickel ore and mixing it with a reducing agent, the particle size of the prepared mixture is 20mm-150mm;
[0045] (3.2) Roast the obtained mixture at 650°C for 3h;
[0046] Wherein, the reducing agent is carbon powder, and the mass of carbon contained in the reducing agent is 5% of the mass of nickel in the nickel-containing mineral.
[0047] In the above examples, through the pre-reduction treatment of the lateritic nickel ore, the nickel oxide contained in it is partially reduced, and some chemical bonds are in different degrees of activation, so that after cont...
Embodiment 3
[0050] Taking the nickel-containing steel with a nickel content of 0.2% as an example, the production process steps of this nickel-containing steel are the same as in Example 1, except that:
[0051] In step (1), obtain 4 tons of molten iron at a temperature of 1400°C in a blast furnace;
[0052]In step (4), the laterite nickel ore and molten iron in step (3) are heated to 1400° C. and kept at 1400° C. for 8 minutes.
[0053] In the above-mentioned embodiment:
[0054] In the step (1), the mass percent content of the components of the obtained molten iron is: 2.0% Si, 3.6% C, and the balance is Fe;
[0055] In the step (3), the particle size of the laterite nickel ore is 40 mm to 60 mm;
[0056] In the step (4), the heating rate of the mixture of nickel-containing mineral and molten iron is 10°C / min.
[0057] The nickel content in the nickel-containing steel obtained by the above nickel-containing steel production process is 0.186%, and the nickel yield is 93%.
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
particle diameter | 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