CN109504852A - A method of reducing the rolling segregation of end tailing - Google Patents
A method of reducing the rolling segregation of end tailing Download PDFInfo
- Publication number
- CN109504852A CN109504852A CN201811550751.5A CN201811550751A CN109504852A CN 109504852 A CN109504852 A CN 109504852A CN 201811550751 A CN201811550751 A CN 201811550751A CN 109504852 A CN109504852 A CN 109504852A
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- tailing
- heap
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- permanently
- segregation
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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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
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- 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 provides a kind of method of rolling segregation for reducing end tailing, comprising the following steps: 1) to material strip limit contracting 1m, after being adjusted to delay, tail portion material stack height is normal, and the material strip formed at this time is to retain material heap for the first time；2) accumulation Jing Guo multiple material strips, blending ore are retained towards first time and are pushed on the outside of material heap, are moved outside the tailing of end so that retaining, are formed new " permanently expecting wall ".The present invention reduces the mechanical chipping amount of end tailing, the angle of change material heap end tailing segregation reduces particle segregation during windrow, and then shortens and build heap time and raising end tailing quality by establishing " permanently expecting wall ".
Description
Technical field
The invention belongs to iron and steel metallurgical industry sintering technology fields, and in particular to one kind is reduced by forming " permanently expecting wall "
The method for holding the rolling segregation of tailing.
Background technique
The country is sintered comprehensive blending-field during material strip heap takes, it is contemplated that end end tailing is in granularity and component segregation
Large effect determines the chevron shaped Stock mode of terminal using change starting point to reduce end doses, but tailing amount is held not can be reduced；
The mixing windrow method that ingredient mine slot participates in next material heap is transported using end end tailing again, reduces end material as far as possible
The influence of ingredient fluctuation, but cost of investment is larger.
Summary of the invention
For the prior art there are one or more of problem, the present invention provides a kind of rolling segregation for reducing end tailing
Method, the described method comprises the following steps:
1) to material strip limit contracting 1m, after being adjusted to delay, tail portion material stack height is normal, and the material strip formed at this time is the
It is primary to retain material heap；
2) accumulation Jing Guo multiple material strips, blending ore is retained towards first time and is pushed on the outside of material heap, so that retaining end tailing
Outer shifting forms new " permanently expecting wall ".
Determine to carry out windrow by the way of terminal using change starting point during windrow, in beginning and end position according to different windrows
The number of plies has different delays, if staying material about 1200t for the first time, since tail portion material is delayed during windrow, and 240 layers of windrow
When, material heap tail portion is higher than the other positions of material strip, touches material hammer, and large arm is raised automatically, influences automatic stockpiling.The present inventor passes through more
Secondary experiment, and to material strip limit contracting 1m, (45s is adjusted to from 50s is started) after being adjusted to delay, tail portion material stack height is just
Often, staying material at this time is 499.2t, retains material heap as first time.During new material strip windrow, with the increase of the windrow number of plies,
Blending ore is retained towards first time and is pushed on the outside of material heap, is moved outside the tailing of end so that retaining, is formed new " permanently expecting wall ".Through excessive
The accumulation of a material strip, tail portion windrow process medial end portions, which are retained material and formd, does not increase not outer " permanently expecting wall " moved.It retains at this time
End tailing about 1814.4t, height 7.2m, hold tail angle of rest (repose) by α to increase to β.Due to " permanently expecting wall " during later windrow
In the presence of, change particle segregation angle, reduce to a certain extent tail portion material segregation.
Based on above technical scheme, pushing of the present invention through multiple windrow and feeding makes " the end tailing wall " of end tail gradually
Being extended to inclination angle is " permanently expecting wall " that maximum feeding harrows angle, since the blocking of " permanently expecting wall " can reduce the rolling of end tailing
Dynamic segregation realizes that traditional end tail segregation doses is reduced, reduces feeding time and the feeding expense of end tailing.
In method provided by the invention, " permanently expecting wall " theoretical calculation that is formed by the pushing of multiple feeding and windrow according to
According to:
Original end tailing is similar to centrum, calculation formula are as follows:
Hold tailing total amount=π R2* 1/3=3.14 × 15.5 × 15.5 × 15.5 × 2 h* σ * × 1/3=7795 tons.
It retains material heap and is similar to cuboid in tail portion:
Material heap amount is retained for the first time are as follows: σ=26 × 3 × 3.2 a*b*h* × 2=499.2 tons
A in formula: material strip width, b: material strip length, h: remaining material strip height, σ: bulk density
Material heap is elapsed outward by 1 meter of distance:
Second of retention material strip material heap amount are as follows: 26.5 × 4 × 3.6 × 2=763.2 tons
And so on:
5th retention material strip material heap amount are as follows: 28 × 4.5 × 7.2 × 2=1814.4 tons
The present invention reduces the mechanical chipping amount of end tailing, changes the segregation of material heap end tailing by establishing " permanently expecting wall "
Angle (the segregation angle of tail portion material heap increases to β by α), reduce windrow during particle segregation, and then shorten build the heap time
With raising end tailing quality.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is heap reclaiming technology flow chart；
Fig. 2 is to become starting point to determine the chevron shaped windrow schematic diagram of terminal；
Fig. 3 is the schematic diagram that " permanently expecting wall " of the invention is formed；
Wherein label is expressed as in figure:
1- feeding machine cylinder；2- reclaimer claw；The end 3- material；The end 4- tailing；5- retention material heap in the prior art；6-
Material heap is retained for the first time；7- is by repeatedly pushing the material heap formed；8- loads machine operation material heap；9- secondary extrusion reserves material heap；
10- finally formed " permanently expecting wall "；The stocking angle of α-material heap in the prior art；The stocking angle of β-" permanently expecting wall " material heap afterwards；
γ-reclaimer claw angle.
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that
Like that, without departing from the spirit or scope of the present invention, described embodiment can be modified by various different modes.
Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figure 1, showing heap reclaiming technology flow chart, the operation mode taken using a pile two.
As shown in Fig. 2, showing the schematic diagram that the change starting point that the present invention uses determines terminal " chevron shaped " Stock mode.
As shown in figure 3, showing the forming process of " permanently expecting wall " of the invention.Wherein A is indicated in the prior art in Fig. 3
The effect picture for the retention material heap that the heap feeding mode taken using a pile two is obtained, wherein 1 represents feeding machine cylinder, 2 represents feeding
Machine claw, 3 represent end material, 4 represent end tailing；5 represent retention material heap in the prior art, 8 represent and load machine operation material heaps.
B indicates that the change starting point using method provided by the invention determines the effect picture of terminal " chevron shaped " Stock mode in Fig. 3, wherein 6 generations
Table retains material heap for the first time, and 9, which represent secondary extrusion, reserves material heap, wherein retaining material heap 6 for the first time is by contracting to the material strip limit
1m, after being adjusted to delay (50s by is adjusted to 45s), obtained first time retains material heap.C indicates to pass through in Fig. 3
Repeatedly push formed material heap effect picture, wherein 7 represent by repeatedly push formed material heap, 10 represent it is finally formed
" permanently expecting wall "；From the figure 3, it may be seen that after method provided by the invention progress windrow handles to obtain " permanently expecting wall ", existing skill
The stocking angle α of material heap is increased to the stocking angle β of " permanently expecting wall " material heap afterwards in art, to reduce the mechanical chipping of end tailing
Amount changes the angle (the segregation angle of tail portion material heap increases to β by α) of material heap end tailing segregation, reduces granularity during windrow
Segregation, and then shorten and build heap time and raising end tailing quality.
It is applied to mix material strip using method of the invention, effect is shown: after using the method for the present invention, blending ore SiO2 ±
0.2 average qualification rate is 79.36%, relatively 76.76% improves 2.6% before, it is more obvious that index promotes effect, and reduces dress
Carrier aircraft feeding time 2.5h.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of method for the rolling segregation for reducing end tailing, which is characterized in that the described method comprises the following steps:
1) to material strip limit contracting 1m, after being adjusted to delay, tail portion material stack height is normal, and the material strip formed at this time is for the first time
Retain material heap；
2) accumulation Jing Guo multiple material strips, blending ore are retained towards first time and are pushed on the outside of material heap, are moved outside the tailing of end so that retaining,
Form new " permanently expecting wall ".
2. the method according to claim 1, wherein it is the 50s adjustment that will start that described pair of delay, which is adjusted,
For 45s.
3. method according to claim 1 or 2, which is characterized in that " permanently the expecting wall " refers to during the windrow of tail portion
It retains material and does not increase not outer shifting in end.
4. according to the method described in claim 3, it is characterized in that, the windrow is to determine to carry out by the way of terminal using change starting point
Windrow.
5. method according to claim 1 or 2, which is characterized in that the end tail angle of rest (repose) of the retention material heap eventually formed increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550751.5A CN109504852B (en) | 2018-12-18 | 2018-12-18 | Method for reducing rolling segregation of end tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550751.5A CN109504852B (en) | 2018-12-18 | 2018-12-18 | Method for reducing rolling segregation of end tailings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109504852A true CN109504852A (en) | 2019-03-22 |
| CN109504852B CN109504852B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811550751.5A Active CN109504852B (en) | 2018-12-18 | 2018-12-18 | Method for reducing rolling segregation of end tailings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302087A (en) * | 2020-03-04 | 2020-06-19 | 首钢京唐钢铁联合有限责任公司 | Uniformly-mixing and stacking method |
| CN111645205A (en) * | 2020-05-10 | 2020-09-11 | 首钢集团有限公司 | Cutting method for material head of blending ore material pile |
| US11772901B2 (en) | 2020-09-11 | 2023-10-03 | Superior Industries, Inc. | Conveyor stockpile desegregation systems, methods and apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371323A (en) * | 2001-06-18 | 2002-12-26 | Nkk Corp | Method and apparatus for manufacturing sintered ore having improved permeability |
| CN102826391A (en) * | 2012-09-24 | 2012-12-19 | 中冶南方工程技术有限公司 | Material piling system for uniformly mixed material piles in iron and steel plant |
| CN103057981A (en) * | 2012-12-14 | 2013-04-24 | 天津钢铁集团有限公司 | Contractive material stacking device and material stacking method |
-
2018
- 2018-12-18 CN CN201811550751.5A patent/CN109504852B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371323A (en) * | 2001-06-18 | 2002-12-26 | Nkk Corp | Method and apparatus for manufacturing sintered ore having improved permeability |
| CN102826391A (en) * | 2012-09-24 | 2012-12-19 | 中冶南方工程技术有限公司 | Material piling system for uniformly mixed material piles in iron and steel plant |
| CN103057981A (en) * | 2012-12-14 | 2013-04-24 | 天津钢铁集团有限公司 | Contractive material stacking device and material stacking method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302087A (en) * | 2020-03-04 | 2020-06-19 | 首钢京唐钢铁联合有限责任公司 | Uniformly-mixing and stacking method |
| CN111645205A (en) * | 2020-05-10 | 2020-09-11 | 首钢集团有限公司 | Cutting method for material head of blending ore material pile |
| CN111645205B (en) * | 2020-05-10 | 2021-10-26 | 首钢集团有限公司 | Cutting method for material head of blending ore material pile |
| US11772901B2 (en) | 2020-09-11 | 2023-10-03 | Superior Industries, Inc. | Conveyor stockpile desegregation systems, methods and apparatus |
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| Publication number | Publication date |
|---|---|
| CN109504852B (en) | 2020-06-02 |
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