CN101113505A - Method for smelting nickel iron by direct furnace-entering of thermal sintering ore - Google Patents
Method for smelting nickel iron by direct furnace-entering of thermal sintering ore Download PDFInfo
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- CN101113505A CN101113505A CNA2007100625510A CN200710062551A CN101113505A CN 101113505 A CN101113505 A CN 101113505A CN A2007100625510 A CNA2007100625510 A CN A2007100625510A CN 200710062551 A CN200710062551 A CN 200710062551A CN 101113505 A CN101113505 A CN 101113505A
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Abstract
The invention relates to a smelting method for a ferroalloy, in particular to the smelting method for a ferronickel by directly putting hot sintering mineral into a furnace. The method comprises the steps: hot breaking process of the hot sintering mineral, hot meshing process, the process of directly putting into furnace, wherein the hot breaking process is operated as that after nickel mineral is sintered on a sinter machine and not cooled, the hot sintering mineral is unloaded from a trolley into a crusher to be broken; the hot meshing process is operated as that the broken hot sintering mineral is directly mashed and separated, hot sintering mineral with qualified granularity is put into a mineral warehouse which has insulation measures to be conserved, while the mineral with unqualified granularity is sent back to be sintered; the process of directly putting into furnace is operated as that hot sintering mineral conserved in batch in the mineral warehouse is added into the hot mineral furnace for smelting. the method of the invention adopts the sinter machine to produce sintering mineral and after hot breaking and hot meshing processes, then the hot sintering mineral are added directly into the hot mineral furnace, which has the advantages of lower investment and larger output of the hot sintering machine and overcomes the disadvantages of large investment and low efficiency by using a rotary kiln for carrying hot mineral into furnace. The invention is the best technology for smelting ferronickel.
Description
Technical field:
The present invention relates to the ferroalloy smelting method, especially a kind of method of smelting nickel iron by direct furnace-entering of thermal sintering ore.
Background technology:
With mine heat furnace smelting nickel-iron two kinds of technologies are arranged generally, a kind of is that nickel minerals is behind sintering on the sinter machine, through cooling, broken, screening fed to boiler smelting, China all is this kind technology, this technology is that stove is gone in cold ore deposit, and cold ore deposit needs to begin heating up to fusing from normal temperature, needs to consume more electric energy; Another kind be nickel oxide ore with rotary kiln baking after, hot ore deposit directly adds in the hot stove in ore deposit and smelts, and can save a large amount of electric energy, its weak point is that the rotary kiln investment is huge, output is less, two kinds of technologies are each has something to recommend him, and shortcoming is also all arranged.
Summary of the invention:
The object of the invention is intended to overcome for going into big, the inefficient shortcoming of investment that stove uses rotary kiln to bring in hot ore deposit, can bring into play that the sinter machine investment is little, the method for the smelting nickel iron by direct furnace-entering of thermal sintering ore of the big advantage of output and provide a kind of.
Realize that the technical scheme that the foregoing invention purpose adopts is: a kind of method of smelting nickel iron by direct furnace-entering of thermal sintering ore, comprise that agglomerate heat is broken, the heat sieve, directly into furnaceman's preface, it is characterized in that:
A, heat are broken: nickel minerals is behind sintering on the sinter machine, and without cooling, heat sinter directly is discharged into from chassis and carries out fragmentation the crusher;
B, heat sieve: the heat sinter after the fragmentation directly sieves, and the heat sinter that granularity is qualified enters the ore storage bin of band insulation measure and preserves, and the underproof fine ore of granularity returns sintering;
C, go into stove:, will be kept at heat sinter in the ore storage bin in batches and add in the hot stove in ore deposit and smelt according to smelting requirement.
Compare existing mine heat furnace smelting nickel-iron method, advantage of the present invention is:
1. utilize the normal sintering machine to produce the nickel agglomerate, investment has only about 15% of rotary kiln, can save great amount of investment, and the very easy maximization of sinter machine, and production scale is unrestricted, and running cost is very low, the input-output ratio height.
2. smelt directly into stove without cooling behind the nickel minerals sintering, go into stove with cold ore deposit and compare, it is nearly 30% to reduce power consumption, can make smelting cost reduce remarkable benefit greatly.
3. heat sinter is gone into stove, has improved temperature in the stove, is very beneficial for electrode baking, and electrode baking speed is accelerated greatly, can effectively solve the low electrode baking difficult problem that causes of furnace temperature.
Embodiment:
Below in conjunction with embodiment in detail the present invention is described in detail.
Embodiment 1:
Nickel minerals is after finishing sintering on the sinter machine, hot ore deposit is without cooling, from chassis, directly be discharged to and carry out fragmentation the crusher, sieve in hot ore deposit after the fragmentation, fine ore less than 2mm returns sintering, enters greater than the heat sinter of 2mm in the ore storage bin of band insulation measure, will be kept at heat sinter in the ore storage bin in batches and add in the hot stove in ore deposit and smelt, power consumption 600KWH in ore deposit per ton goes into stove economize on electricity 200KWH/ ton than cold sinter.
Embodiment 2:
Nickel minerals is after finishing sintering on the sinter machine, hot ore deposit is without cooling, from chassis, directly be discharged to and carry out fragmentation the crusher, hot ore deposit after the fragmentation is without screening, heat sinter all enters in the ore storage bin of band insulation measure, to be kept in the hot stove in heat sinter adding ore deposit in the ore storage bin in batches and smelt, power consumption 620KWH in ore deposit per ton goes into stove economize on electricity 180KWH/ ton than cold sinter.
In the aforesaid method of the present invention, the used sinter machine of sintering circuit is the normal sintering machine of sintering iron ore.
In the aforesaid method, the heat sinter after the fragmentation also can be without screening, and the ore storage bin that all enters band insulation measure is preserved.
Claims (1)
1. the method for a smelting nickel iron by direct furnace-entering of thermal sintering ore, comprise that agglomerate heat is broken, the heat sieve, directly into furnaceman's preface, it is characterized in that:
A, heat are broken: nickel minerals is behind sintering on the sinter machine, and without cooling, heat sinter directly is discharged into from chassis and carries out fragmentation the crusher;
B, heat sieve: the heat sinter after the fragmentation directly sieves, and the heat sinter that granularity is qualified enters the ore storage bin of band insulation measure and preserves, and the underproof fine ore of granularity returns sintering;
C, go into stove:, will be kept at heat sinter in the ore storage bin in batches and add in the hot stove in ore deposit and smelt according to smelting requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100625510A CN101113505A (en) | 2007-08-08 | 2007-08-08 | Method for smelting nickel iron by direct furnace-entering of thermal sintering ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100625510A CN101113505A (en) | 2007-08-08 | 2007-08-08 | Method for smelting nickel iron by direct furnace-entering of thermal sintering ore |
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| Publication Number | Publication Date |
|---|---|
| CN101113505A true CN101113505A (en) | 2008-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100625510A Pending CN101113505A (en) | 2007-08-08 | 2007-08-08 | Method for smelting nickel iron by direct furnace-entering of thermal sintering ore |
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| CN (1) | CN101113505A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105452495A (en) * | 2013-09-13 | 2016-03-30 | 杰富意钢铁株式会社 | Method for producing sintered mineral |
| CN106337114A (en) * | 2016-09-12 | 2017-01-18 | 鞍钢股份有限公司 | Using method of super-thick material layer sintered ore adopting pre-sintering |
| CN112626301A (en) * | 2020-11-30 | 2021-04-09 | 商都中建金马冶金化工有限公司 | Preparation process of nickel-iron alloy |
-
2007
- 2007-08-08 CN CNA2007100625510A patent/CN101113505A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105452495A (en) * | 2013-09-13 | 2016-03-30 | 杰富意钢铁株式会社 | Method for producing sintered mineral |
| CN106337114A (en) * | 2016-09-12 | 2017-01-18 | 鞍钢股份有限公司 | Using method of super-thick material layer sintered ore adopting pre-sintering |
| CN106337114B (en) * | 2016-09-12 | 2018-05-29 | 鞍钢股份有限公司 | A kind of super thick bed of material sinter application method using pre-sintering |
| CN112626301A (en) * | 2020-11-30 | 2021-04-09 | 商都中建金马冶金化工有限公司 | Preparation process of nickel-iron alloy |
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