Molten manganese-containing steel production method, holding furnace, and molten manganese-containing steel production equipment using holding furnace
US-2020340085-A1 · Oct 29, 2020 · US
Method for smelting oxide ore
US2020056262A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020056262-A1 |
| Application number | US-201816609599-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 11, 2018 |
| Priority date | May 24, 2017 |
| Publication date | Feb 20, 2020 |
| Grant date | — |
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Abstract
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In a method for producing a metal or alloy by forming pellets from an oxide ore, a method for smelting an oxide ore, wherein a high-quality metal can be produced. Provided is a method for smelting an oxide ore to produce a metal or alloy by heating for reducing a mixture containing an oxide ore and a carbonaceous reducing agent, wherein the carbonaceous reducing agent is composed of particles (reducing agent particles), the number of reducing agent particles which are contained in the carbonaceous reducing agent and have a maximum particle length of 25 μm or less is 2% or more and 25% or less of the total number of reducing agent particles contained in the carbonaceous reducing agent, and the average maximum particle length of reducing agent particles having a maximum particle length greater than 25 μm is 30 μm or more and 80 μm or less.
First claim
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1 . A method for smelting a nickel oxide ore of obtaining a ferronickel that is a reduced product and a slag by mixing a nickel oxide ore and a carbonaceous reducing agent, and by performing heating for a reduction treatment with respect to a mixture that is obtained, wherein the carbonaceous reducing agent is composed of particles (reducing agent particles), a ratio of a number of reducing agent particles which are contained in the carbonaceous reducing agent and have a maximum particle length of 25 μm or less is 2% or more and 25% or less of a total number of reducing agent particles contained in the carbonaceous reducing agent, and an average maximum particle length of reducing agent particles having a maximum particle length of greater than 25 μm that is obtained by Expression (1) described below is 30 μm or more and 80 μm or less. Average Maximum Particle Length=Sum of Maximum Particle Length of 300 Reducing Agent Particles/300 Expression (1) 2 . The method for smelting a nickel oxide ore according to claim 1 , wherein a reduction temperature in the reduction treatment is 1200° C. or more and 1450° C. or less. 3 - 4 . (canceled)
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- What does patent US2020056262A1 cover?
- In a method for producing a metal or alloy by forming pellets from an oxide ore, a method for smelting an oxide ore, wherein a high-quality metal can be produced. Provided is a method for smelting an oxide ore to produce a metal or alloy by heating for reducing a mixture containing an oxide ore and a carbonaceous reducing agent, wherein the carbonaceous reducing agent is composed of particles (…
- Who is the assignee on this patent?
- Sumitomo Metal Mining Co
- What technology area does this patent fall under?
- Primary CPC classification C22C33/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Feb 20 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).