CN106282536A - The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore - Google Patents
The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore Download PDFInfo
- Publication number
- CN106282536A CN106282536A CN201610790609.2A CN201610790609A CN106282536A CN 106282536 A CN106282536 A CN 106282536A CN 201610790609 A CN201610790609 A CN 201610790609A CN 106282536 A CN106282536 A CN 106282536A
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- CN
- China
- Prior art keywords
- nickel ore
- pelletizing
- lateritic nickel
- lateritic
- sections
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/005—Preliminary treatment of ores, e.g. by roasting or by the Krupp-Renn process
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to field of metallurgy, specially the method for enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore, by lateritic nickel ore raw material preroast 50min；Being finely ground into lateritic nickel ore powder, regulate moisture, pelletizing produces pelletizing.Drying, the lateritic nickel ore pelletizing after drying carries out five sections of roastings in tube furnace.Solve to a certain extent directly by the problem of intensity difference during lateritic nickel ore raw material production pellet.Can also solve during import lateritic nickel ore, have the freight charges of nearly 30% to be wasted on transport moisture simultaneously, cost of transportation can be greatly lowered.
Description
Technical field
The present invention relates to field of metallurgy, specially the method for enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore.
Background technology
Lateritic nickel ore moisture is high, at about 35-40%, when external import lateritic nickel ore, appreciable transport
Expense is wasted on roping moisture.Therefore can develop new laterite nickel ore pellets manufacture method, roasting lateritic nickel ore is become
Intensity is high and can meet the requirement of long-distance transportation, will have realistic meaning.
Summary of the invention
For above-mentioned technical problem, the present invention provides the manufacture method of a kind of laterite nickel ore pellets, uses we's legal system
The laterite nickel ore pellets made, it is possible to resolve during roasting lateritic nickel ore pellet, because intensity is too low to realize long distance transportation
Problem.Concrete technical scheme is:
The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore, comprises the steps:
(1) 650 DEG C～the temperature of 980 DEG C, by lateritic nickel ore raw material preroast 50min；
(2) lateritic nickel ore after preroast is finely ground in ball mill lateritic nickel ore powder, crosses 200 mesh sieve；
(3) lateritic nickel ore powder regulation moisture, pelletizing produces pelletizing, obtain moisture content be by weight percentage 30% red
Soil nickel ore pellet, the mean diameter of lateritic nickel ore pelletizing is 10mm-16mm；
(4) lateritic nickel ore pelletizing dries 20min in the temperature of 80 DEG C；
(5) the lateritic nickel ore pelletizing after drying carries out five sections of roastings in tube furnace, wherein one section of sintering temperature be 120～
140 DEG C, roasting time is 10min；Two-stage calcination temperature is 280～350 DEG C, and roasting time is 5min；Three sections of sintering temperatures are
600～800 DEG C, roasting time is 5min；Four sections of sintering temperatures are 1250 DEG C～1500 DEG C, and roasting time is 10min；Five sections all
Thermal bake-out temperature is 600～700 DEG C, and roasting time is the time gradient roasting piecemeal of 5min, obtains finished product lateritic nickel ore pelletizing
Ore deposit.
The method that the present invention provides uses and lateritic nickel ore raw material is carried out preroast in advance, then roasting material is milled down to one
Determine below fineness, can solve to a certain extent directly by the problem of intensity difference during lateritic nickel ore raw material production pellet.Simultaneously
Can also solve during import lateritic nickel ore, have the freight charges of nearly 30% to be wasted on transport moisture, cost of transportation can be greatly lowered.
Detailed description of the invention
For the ease of understanding the present invention, by detailed description of the invention, the present invention will be described more fully below.But
It is that the present invention can realize in many different forms, however it is not limited to embodiment described herein.On the contrary, provide this
The purpose of a little embodiments is to make the understanding to the disclosure more thorough comprehensively.
The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore, comprises the steps:
(1) 650 DEG C～the temperature of 980 DEG C, by lateritic nickel ore raw material preroast 50min；
(2) lateritic nickel ore after preroast is finely ground in ball mill lateritic nickel ore powder, crosses 200 mesh sieve；
(3) lateritic nickel ore powder regulation moisture, pelletizing produces pelletizing, obtain moisture content be by weight percentage 30% red
Soil nickel ore pellet, the mean diameter of lateritic nickel ore pelletizing is 10mm-16mm；
(4) lateritic nickel ore pelletizing dries 20min in the temperature of 80 DEG C；
(5) the lateritic nickel ore pelletizing after drying carries out five sections of roastings in tube furnace, wherein one section of sintering temperature be 120～
140 DEG C, roasting time is 10min；Two-stage calcination temperature is 280～350 DEG C, and roasting time is 5min；Three sections of sintering temperatures are
600～800 DEG C, roasting time is 5min；Four sections of sintering temperatures are 1250 DEG C～1500 DEG C, and roasting time is 10min；Five sections all
Thermal bake-out temperature is 600～700 DEG C, and roasting time is the time gradient roasting piecemeal of 5min, obtains finished product lateritic nickel ore pelletizing
Ore deposit.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (1)
1. the method for enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore, it is characterised in that comprise the steps:
(1) 650 DEG C～the temperature of 980 DEG C, by lateritic nickel ore raw material preroast 50min；
(2) lateritic nickel ore after preroast is finely ground in ball mill lateritic nickel ore powder, crosses 200 mesh sieve；
(3) lateritic nickel ore powder regulates moisture, and pelletizing produces pelletizing, and obtaining moisture content is the laterite nickel of 30% by weight percentage
Ore deposit pelletizing, the mean diameter of lateritic nickel ore pelletizing is 10mm 16mm；
(4) lateritic nickel ore pelletizing dries 20min in the temperature of 80 DEG C；
(5) the lateritic nickel ore pelletizing after drying carries out five sections of roastings in tube furnace, and wherein one section of sintering temperature is 120 ~ 140
DEG C, roasting time is 10min；Two-stage calcination temperature is 280 ~ 350 DEG C, and roasting time is 5min；Three sections of sintering temperatures are 600 ~
800 DEG C, roasting time is 5min；Four sections of sintering temperatures are 1250 DEG C ~ 1500 DEG C, and roasting time is 10min；Five sections of equal thermal bake-outs
Temperature is 600 ~ 700 DEG C, and roasting time is the time gradient roasting piecemeal of 5min, obtains finished product laterite nickel ore pellets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790609.2A CN106282536A (en) | 2016-08-31 | 2016-08-31 | The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790609.2A CN106282536A (en) | 2016-08-31 | 2016-08-31 | The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106282536A true CN106282536A (en) | 2017-01-04 |
Family
ID=57672397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610790609.2A Pending CN106282536A (en) | 2016-08-31 | 2016-08-31 | The method of enriching nickel by pre-reducing carbon-contained pellets of laterite nickel ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106282536A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007291A (en) * | 2006-01-12 | 2007-08-01 | 株式会社日立工业设备技术 | Safety cabinet system, clean bench system, safety cabinet and clean bench |
| CN102719661A (en) * | 2012-06-20 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Manufacturing method of laterite nickel ore pellets |
-
2016
- 2016-08-31 CN CN201610790609.2A patent/CN106282536A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007291A (en) * | 2006-01-12 | 2007-08-01 | 株式会社日立工业设备技术 | Safety cabinet system, clean bench system, safety cabinet and clean bench |
| CN102719661A (en) * | 2012-06-20 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Manufacturing method of laterite nickel ore pellets |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |