CN104942301B - The technique that nickel hydroxide produces stainless steel nickel raw material - Google Patents
The technique that nickel hydroxide produces stainless steel nickel raw material Download PDFInfo
- Publication number
- CN104942301B CN104942301B CN201510345428.4A CN201510345428A CN104942301B CN 104942301 B CN104942301 B CN 104942301B CN 201510345428 A CN201510345428 A CN 201510345428A CN 104942301 B CN104942301 B CN 104942301B
- Authority
- CN
- China
- Prior art keywords
- nickel
- stainless steel
- raw material
- nickel hydroxide
- technique
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to field of metallurgy, and in particular to the technique that nickel hydroxide produces stainless steel nickel raw material.The technical problems to be solved by the invention are that the technique of existing production stainless steel nickel raw material is more numerous and diverse, and energy consumption is high and low into height.The scheme that the present invention solves above-mentioned technical problem is to provide the technique that a kind of nickel hydroxide produces stainless steel nickel raw material, comprises the following steps：To be uniformly distributed on the steel band of steel belt furnace by dry nickel hydroxide；It is passed through N2, intensification is then begun to warm up, continue to be passed through N while intensification2；When being warming up to 200 DEG C, start to being passed through H in steel belt furnace2With N2Mixed gas；Constant temperature reduction is maintained when being warming up to 500 DEG C；Constant temperature reduction obtains nickel powder after terminating；After nickel powder melts through intermediate frequency furnace, stainless steel smelting is directly used in.The nickel hydroxide that the present invention is provided produces the technique of stainless steel nickel raw material, and operating process is simple, and energy consumption is low, has expanded the supply channel of production stainless steel nickel raw material, reduces the production cost of stainless steel.
Description
Technical field
The invention belongs to field of metallurgy, and in particular to the technique that nickel hydroxide produces stainless steel nickel raw material.
Background technology
Nickel is the important alloying element for producing austenitic stainless steel, and consumption of the nickel in stainless steel industry accounts for total quantity consumed
80%, with the increase of China's stainless steel output, the demand to nickel also increases year by year, the nickeliferous original used by current smelting stainless steel
Material mainly has sheet nickel and dilval.
The ferronickel of domestic production accounts for 65% or so of nickel supply, China's ferronickel production it is main with import Indonesia or
Filipine lateritic nickel ore is raw material, is produced using electric furnace or blast furnace technology.Either blast furnace or eaf process, energy
There is a problem of that energy consumption is higher, the implementation of ore deposit order is prohibited especially with Indonesia, the raw material structure of smelting ferronickel is more complicated, leads
Cause production cost is high, and economic benefit is low.
Current stainless steel industry production capacity surplus, dog-eat-dog, profit margin is low, seeks the raw material and former material of low cost
Material Treatment technique for processing is the inevitable choice that enterprise enhances the competitiveness.
In sum, a kind of new technology for producing stainless steel nickel raw material of exploitation is needed badly.
The content of the invention
The technical problems to be solved by the invention are that the technique of existing production stainless steel nickel raw material is more numerous and diverse, high energy consumption,
It is low into height.
The scheme that the present invention solves above-mentioned technical problem is to provide the work that a kind of nickel hydroxide produces stainless steel nickel raw material
Skill, comprises the following steps：
1) will be uniformly distributed on the steel band of steel belt furnace by dried nickel hydroxide；
2) it is passed through N2Air in emptying steel belt furnace, then begins to warm up intensification, continues to be passed through N while intensification2；
3) when being warming up to 200 DEG C, start to being passed through H in steel belt furnace2With N2Mixed gas, and continue heat up；
4) when being warming up to 500 DEG C, it has been passed through in the steel belt furnace of mixed gas and has maintained constant temperature reduction, the constant temperature recovery time has been 90
~120min；
5) constant temperature reduction obtains nickel powder after terminating；After nickel powder melts through intermediate frequency furnace, stainless steel smelting is directly used in.
In technique of the above-mentioned nickel hydroxide production stainless steel with nickel raw material, step 1) in the nickel hydroxide, the quality of Ni
Percentage composition is 30~50%.
In technique of the above-mentioned nickel hydroxide production stainless steel with nickel raw material, step 1) nickel hydroxide surface water after the drying
Content ＜ 10%wt.
In technique of the above-mentioned nickel hydroxide production stainless steel with nickel raw material, step 3) and 4) described in mixed gas in, H2
Volumn concentration be 15~30%.
The nickel hydroxide that the present invention is provided produces the technique of stainless steel nickel raw material, and operating process is simple, and energy consumption is low, expands
The production stainless steel supply channel of nickel raw material, reduces the production cost of stainless steel.
Specific embodiment
Nickel hydroxide produces the stainless steel technique of nickel raw material, comprises the following steps：
1) will be uniformly distributed on the steel band of steel belt furnace by dried nickel hydroxide；
2) it is passed through N2Air in emptying steel belt furnace, then begins to warm up intensification, continues to be passed through N while intensification2；
3) when being warming up to 200 DEG C, start to being passed through H in steel belt furnace2With N2Mixed gas, and continue heat up；
4) when being warming up to 500 DEG C, it has been passed through in the steel belt furnace of mixed gas and has maintained constant temperature reduction, the constant temperature recovery time has been 90
~120min；
5) constant temperature reduction obtains nickel powder after terminating；After nickel powder melts through intermediate frequency furnace, stainless steel smelting is directly used in.
In technique of the above-mentioned nickel hydroxide production stainless steel with nickel raw material, step 1) in the nickel hydroxide, the quality of Ni
Percentage composition is 30~50%.
In technique of the above-mentioned nickel hydroxide production stainless steel with nickel raw material, step 1) nickel hydroxide surface water after the drying
Content ＜ 10%wt.
In technique of the above-mentioned nickel hydroxide production stainless steel with nickel raw material, step 3) and 4) described in mixed gas in, H2
Volumn concentration be 15~30%.
Wherein, due to H2Oxygen easily and in air explodes, in order to keep the safety in production so the upper limit of mixed gas
It is limited to 30%；There is the ratio of hydrogen to the reduction degree of nickel hydroxide, recovery time and hydrogen utilization ratio in mixed gas
Influence, it is 15% to consider selection lower limit.
H2Carried out at the temperature that reduction nickel hydroxide can be relatively low again, but reduction efficiency is low during low temperature, while hydrogen is sharp
It is also low with rate.The abundant reduction of nickel hydroxide can be ensured by explorative experiment, when temperature is 500 DEG C, but continue to rise high-temperature
Energy consumption can be increased.Therefore, H2The ceiling temperature for reducing nickel hydroxide is 500 DEG C.
The H in mixed gas are determined2Volume ratio and reduction temperature after, as long as ensure nickel hydroxide can be abundant
It is reduced.And the constant temperature recovery time is also relevant with the thickness of feed layer of steel band nickel hydroxide, thickness of feed layer cannot accomplish definitely
Uniformity, according to experimental result, obtains the control of constant temperature recovery time and is advisable in 90~120min.
The nickel hydroxide that the present invention is used is the intermediate products of hydrometallurgy, less in pyrometallurgical smelting directly to use.
Embodiment 1
1) by nickel hydroxide drying to surface water content ＜ 10%wt, then dried nickel hydroxide is uniformly distributed into
On the steel band of steel belt furnace.
2) it is passed through N2Air in emptying steel belt furnace, then begins to warm up intensification, continues to be passed through N while intensification2。
3) when being warming up to 200 DEG C, start to being passed through H in steel belt furnace2With N2Mixed gas, and continue heat up；H2Volume
Percentage composition is 20%.
4) when being warming up to 500 DEG C, it has been passed through in the steel belt furnace of mixed gas and has maintained constant temperature reduction, the constant temperature recovery time has been
100min。
5) constant temperature reduction obtains nickel powder after terminating；After nickel powder melts through intermediate frequency furnace, stainless steel smelting is directly used in.
The composition of nickel hydroxide used by the present embodiment is as shown in table 1.
The chemical composition (%wt) of the nickel hydroxide of table 1
Note：Chemical composition content analysis in table 1 in addition to the water of surface is carried out after being all raw material stoving, and this is in metallurgy
It is general in industry, removed after the water of surface, the part less than 100% is exactly the crystallization water and hydroxyl.
The nickel powder that the present embodiment is obtained, its composition is as shown in table 2.
The chemical composition (%wt) of the nickel powder of table 2
| Composition | Ni | Co | Fe | CaO | MgO | C | S | Impurity | ||
| Content | 81.05 | 2.42 | 0.29 | 2.10 | 0.21 | 3.64 | 0.04 | 0.87 | 4.802 | 4.578 |
The technique of the nickel hydroxide production stainless steel nickel raw material for providing of the invention, its process is simple, energy consumption is low, cost
It is low, the supply channel of production stainless steel nickel raw material has been expanded, reduce the production cost of stainless steel.
Claims (2)
1. the nickel hydroxide production stainless steel technique of nickel raw material, comprises the following steps：
1) will be uniformly distributed on the steel band of steel belt furnace by dried nickel hydroxide, the nickel hydroxide is hydrometallurgy
The weight/mass percentage composition of intermediate products, wherein Ni is 30~50%；
2) it is passed through N2Air in emptying steel belt furnace, then begins to warm up intensification, continues to be passed through N while intensification2；
3) when being warming up to 200 DEG C, start to being passed through H in steel belt furnace2With N2Mixed gas, and continue heat up；Described gaseous mixture
In body, H2Volumn concentration be 15~30%；
4) when being warming up to 500 DEG C, it has been passed through in the steel belt furnace of mixed gas and has maintained constant temperature reduction, the constant temperature recovery time is 90~
120min；In described mixed gas, H2Volumn concentration be 15~30%；
5) constant temperature reduction obtains nickel powder after terminating；After nickel powder melts through intermediate frequency furnace, stainless steel smelting is directly used in.
2. the technique that nickel hydroxide according to claim 1 produces stainless steel nickel raw material, it is characterised in that：Step 1) institute
State the wt % of content ＜ 10 of nickel hydroxide surface water after drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345428.4A CN104942301B (en) | 2015-06-19 | 2015-06-19 | The technique that nickel hydroxide produces stainless steel nickel raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345428.4A CN104942301B (en) | 2015-06-19 | 2015-06-19 | The technique that nickel hydroxide produces stainless steel nickel raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104942301A CN104942301A (en) | 2015-09-30 |
| CN104942301B true CN104942301B (en) | 2017-07-04 |
Family
ID=54157657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510345428.4A Active CN104942301B (en) | 2015-06-19 | 2015-06-19 | The technique that nickel hydroxide produces stainless steel nickel raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104942301B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623961A (en) * | 2016-11-28 | 2017-05-10 | 荆门市格林美新材料有限公司 | Preparation method of nickel powder with small FSSS |
| CN106670489A (en) * | 2016-11-28 | 2017-05-17 | 荆门市格林美新材料有限公司 | Preparing method for spherical high-purity nickel powder |
| CN113265509B (en) * | 2021-05-14 | 2022-08-30 | 山西太钢不锈钢股份有限公司 | Production method for smelting nickel-based stainless steel by using nickel hydroxide as raw material in electric furnace |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59198703A (en) * | 1983-04-25 | 1984-11-10 | Hitachi Metals Ltd | Manufacture of magnetic metal powder |
| JP4385457B2 (en) * | 1999-11-19 | 2009-12-16 | 堺化学工業株式会社 | Method for producing fine spherical metal nickel fine powder |
| US7604679B2 (en) * | 2005-11-04 | 2009-10-20 | Sumitomo Metal Mining Co., Ltd. | Fine nickel powder and process for producing the same |
| CN101837463B (en) * | 2009-03-20 | 2014-09-24 | 中国科学院过程工程研究所 | Method preparing superfine metallic nickel powder with high frequency plasma |
| CN102909383B (en) * | 2011-08-03 | 2015-08-05 | 深圳市格林美高新技术股份有限公司 | The preparation method of extra-fine nickel powder or cobalt powder |
-
2015
- 2015-06-19 CN CN201510345428.4A patent/CN104942301B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104942301A (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104942301B (en) | The technique that nickel hydroxide produces stainless steel nickel raw material | |
| CN102304599A (en) | Method and device for producing direct reduced iron by using gas-based reduction shaft furnace | |
| MY157630A (en) | Method for producing ferroalloy containing nickel | |
| CN110804695A (en) | Method for purifying zinc sulfate solution by using pressurized zinc powder | |
| CN101392320B (en) | Method for treating nickel-containing laterite by microwave reducing roasting-goethite precipitation conversion method | |
| CN114250358A (en) | Super-thick material layer sintering process | |
| SE538994C2 (en) | Process for controlling the rate of reduction in the preparation of a ferro alloy | |
| Song et al. | Thermodynamic of selective reduction of laterite ore by reducing gases | |
| CN104308143A (en) | Production method of ternary copper powder | |
| CN102534195A (en) | Gold extraction process method for refractory gold ore | |
| CN105460926B (en) | A kind of native graphite is without boat purifying process | |
| CN104099478B (en) | A kind of method reclaiming and prepare chromium metal | |
| CN106086468B (en) | A kind of method and system extracting nickel oxide using ferronickel powder | |
| CN103421924A (en) | Fluidization laterite ore reducing method | |
| WO2012031379A1 (en) | Method for extracting gold through low-temperature roasting | |
| CN103509934A (en) | Method for producing austenitic stainless steel by using nickel and chromium ores | |
| PH12017500061B1 (en) | Method for producing pellet and method for smelting nickel oxide ore | |
| CN105463187B (en) | The oxygen-enriched air roasting technique of lateritic nickel ore | |
| CN205843347U (en) | Gasification revolving bed | |
| CN107354259A (en) | A kind of coal-based direct reduction shaft furnace and the method smelted using the shaft furnace | |
| CN104032126B (en) | A kind of technique of moving bed roasting Low Grade Molybdenum Concentrates | |
| CN103602771B (en) | Local slope type reduction ironmaking furnace and process | |
| CN107857267A (en) | A kind of method that vacuum low-pressure prepares calcium carbide | |
| CN114292974A (en) | Method for reducing blast furnace fuel ratio under tamping coke smelting condition | |
| CN204584281U (en) | A kind of poking device increasing cobalt oxalate response area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |