CN106676259A - Ore blending method for blending ferrodolomite into low-magnetism crude iron ore - Google Patents
Ore blending method for blending ferrodolomite into low-magnetism crude iron ore Download PDFInfo
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- CN106676259A CN106676259A CN201611227513.1A CN201611227513A CN106676259A CN 106676259 A CN106676259 A CN 106676259A CN 201611227513 A CN201611227513 A CN 201611227513A CN 106676259 A CN106676259 A CN 106676259A
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- Prior art keywords
- ore
- iron
- output
- ankerite
- cao
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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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
Abstract
The invention discloses an ore blending method for blending ferrodolomite into low-magnetism crude iron ore. The method specifically comprises the following steps: acquiring data of an iron ore resource to be mined as a plan; setting the level and calcium oxide content target of iron output from the iron ore; building ore blending models of iron ore and ferrodolomite; and outputting the ore blending quantity of ferrodolomite. The method has the advantages that ferrodolomite is reasonably blended into the low-magnetism crude iron core according to the ore-dressing study and the practice result; the reasonable ore blending quantity and the output ore quality are calculated; the ferrodolomite in an own mine can be recovered. Therefore, the resource utilization level can be improved; the production cost of ore mining, ore dressing and sintering can be synchronously decreased; the reasonable ferrodolomite blending quantity and the output ore quality can be calculated, so that the resource utilization efficiency can be improved, and the ore mining cost can be decreased; the service life of a mine can be prolonged, and the waste stone output can be reduced; the ore dressing and sintering processes are stable; the ore dressing ratio can be reduced during ore dressing, and the lime consumption in sintering can be decreased, thus reducing the cost of ore dressing and sintering systems.
Description
Technical field
The invention belongs to dig up mine and mineral engineering technology field, and in particular to a kind of ankerite allocates weak magnetism raw ore into
In ore-proportioning method.
Background technology
The primary raw material base of Orebody in Jingtieshan Kuang Shijiu steel our department iron and steel production, to the north of great river be boundary, be divided into Betula ditch and black
Two mining areas of ditch, 5,000,000 tons/year of Betula ditch mining area production capacity, 4,500,000 tons/year of Hei Gou mining areas production capacity, the iron ore of production is sent to mountain
Lower ore dressing plant is processed, 53% or so lump ore（15~150mm）Grade 60% is produced by magnetizing roast-low intensity magnetic separation-reverse flotation left
Right inferior fine magnetite concentrate；47% or so fine ore（0~15mm）The high intensity magnetic mineral of grade 46% or so is produced by high intensity magnetic separation；By weak magnetic
Concentrate and high intensity magnetic mineral mixed dehydration form the comprehensive concentrate of Iron grade 53% or so and are sent to SINTERING PRODUCTION.
The Ore for containing high ankerite proportioning using the black ditch of last process Orebody in Jingtieshan ore deposit is liked in ore dressing, because ankerite
When output increases, one side block fracture slope is relatively high, and ore dressing is readily produced tissue；On the other hand, ankerite passes through high intensity magnetic separation
Or magnetizing roast-low intensity magnetic separation, concentrate CaO content is raised after ore dressing, while metal recovery rate is improved, choosing is than declining；Such height
When calcium iron ore concentrate enters sintering for agglumeration, sintering can reduce lime consumption, and the grade of sintering deposit will rise, for reduction ore dressing
There is very much realistic meaning with the production cost of sintering.
Practice have shown that increase ankerite in raw ore in right amount is beneficial, and Orebody in Jingtieshan with ore dressing, SINTERING PRODUCTION is compared
Ore deposit does not formulate ankerite ore-proportioning method, if according to quality control standards in 2015 of wine steel, wine steel adopts Single Iron product
Position control raw ore output, simply adopts richness and abandons lean guarantor's output Iron grade, 2016, will cause border ferrum product of the ankerite with ore deposit
Position is 30%, and more than 80% ankerite is drained as country rock, while causing the wasting of resources, causes the black ditch rate of extraction to reduce,
Mine life shortens, and to the follow-up developments in mine serial impact is brought, and resource utilization is relatively low.
The content of the invention
It is an object of the invention to provide a kind of ankerite allocates the ore-proportioning method in weak magnetism raw ore into, it is existing to solve
Raw ore Iron grade is not enough in technology, can use iron ore deposit resource shortage, and CaO content is low in raw ore, and resource utilization is low, mining,
Ore dressing, the production cost for sintering are higher.
To reach above-mentioned purpose, the technical scheme is that：A kind of ankerite allocates matching somebody with somebody in weak magnetism raw ore into
Ore deposit method, it is characterised in that：Specifically include following steps：
（1）The iron ore deposit data acquisition of plan exploitation, by existing productive prospecting data and the stope of plan exploitation
The distributed areas and grade of each horizontal iron ore and ankerite are determined；When strip mining transformation, with reference to resource distribution feelings
Condition, to the sample of blasting boreholes assay is carried out, and draws a circle to approve detail location, quantity and Iron grade and the CaO content of ankerite；
（2）Formulate the Iron grade and calcium oxide content target of iron ore output；
（3）Set up iron ore and ankerite with ore deposit model；
（4）Output ankerite matches somebody with somebody ore deposit quantity；
Described is with ore deposit model：
Object function（1）
With in ore deposit modular form：
y：Ankerite matches somebody with somebody ore deposit quantity（Ton）；
TFeOre deposit：Iron ore blast hole sample detection Iron grade（%）；
TFeMark：Iron mine plan exports Iron grade target（%）；
a：Iron ore plan exports quantity（Ton）；
TFeank：Ankerite blast hole sample detection Iron grade（%）；
The formula of the output iron mine Iron grade and output iron mine CaO is as follows：
Object function（2）
Object function（3）
In formula：
CaOOutput：Output iron mine CaO content（%）；
CaOOre deposit：Iron ore blast hole sample detection CaO content（%）；
a：Iron ore plan exports quantity（Ton）；
CaOank：Ankerite blast hole sample detection CaO content（%）；
y：Ankerite ore deposit quantity
TFeOutput：Output iron mine Iron grade（%）；
CaOOutput≤ 6% constraints（4）
TFeOOutput+ δ（CaOOutput- CaOOre deposit）≥ TFeMarkConstraints（5）
δ：The CaO content conversion of output Ore is the coefficient of Iron grade, according to test or production it was determined that span 0.4
~1.0, work as CaOOutput ≤ CaOOre depositWhen, value is 0；
CaOOre deposit：CaO content statistical data shows that it is located at 1.0~1.6% in iron ore.
Preferably, described ankerite matches somebody with somebody ore deposit quantity according to object function（1）, object function（2）, object function（3）
And constraints（4）, constraints（5）The quantity of ankerite is allocated in calculate weak magnetism raw ore into, if constraints
It is unsatisfactory for, readjusts iron ore output quantity, carries out object function（1）, object function（2）And object function（3）Calculating.
It is an advantage of the current invention that：According to beneficiation research and practice result, ankerite is rationally allocated weak magnetism into former
In ore deposit, rational ore matching quantity and output mineral nitrogen amount are calculated, reclaim the ankerite in own mine, CaO content is included into output
Ore quality control, takes into full account the metallurgical value of CaO in ankerite, improve level of resource utilization, it is synchronous reduce mining,
Ore dressing and the production cost of sintering；Ankerite can be calculated rationally allocates quantity and output ore quality into, improves resource
Utilization ratio, reduces mining cost；Extend mine life, reduce barren rock output；Ankerite is matched somebody with somebody using the method
After ore deposit, ore dressing, sintering process are stable, and ore dressing reduces choosing ratio, and sintering reduces lime consumption, reduces ore dressing and sintering system
Cost.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
A kind of ankerite allocates the ore-proportioning method in weak magnetism raw ore into, specifically includes following steps：
（1）The iron ore deposit data acquisition of plan exploitation, by existing productive prospecting data and the stope of plan exploitation
The distributed areas and grade of each horizontal iron ore and ankerite are determined；When strip mining transformation, with reference to resource distribution feelings
Condition, to the sample of blasting boreholes assay is carried out, and draws a circle to approve detail location, quantity and Iron grade and the CaO content of ankerite；
（2）Formulate the Iron grade and calcium oxide content target of iron ore output；
（3）Set up iron ore and ankerite with ore deposit model；
（4）Output ankerite matches somebody with somebody ore deposit quantity；
Described is with ore deposit model：
Object function（1）
With in ore deposit modular form：
y：Ankerite matches somebody with somebody ore deposit quantity（Ton）；
TFeOre deposit：Iron ore blast hole sample detection Iron grade（%）；
TFeMark：Iron mine plan exports Iron grade target（%）；
a：Iron ore plan exports quantity（Ton）；
TFeank：Ankerite blast hole sample detection Iron grade（%）；
The formula of the output iron mine Iron grade and output iron mine CaO is as follows：
Object function（2）
Object function（3）
In formula：
CaOOutput：Output iron mine CaO content（%）；
CaOOre deposit：Iron ore blast hole sample detection CaO content（%）；
a：Iron ore plan exports quantity（Ton）；
CaOank：Ankerite blast hole sample detection CaO content（%）；
y：Ankerite ore deposit quantity
TFeOutput：Output iron mine Iron grade（%）；
CaOOutput≤ 6% constraints（4）
TFeOOutput+ δ（CaOOutput- CaOOre deposit）≥ TFeMarkConstraints（5）
δ：The CaO content conversion of output Ore is the coefficient of Iron grade, according to test or production it was determined that span 0.4
~1.0, work as CaOOutput ≤ CaOOre depositWhen, value is 0；
CaOOre deposit：CaO content statistical data shows that it is located at 1.0~1.6% in iron ore.
Ankerite is with ore deposit quantity according to object function（1）, object function（2）, object function（3）And constraints（4）、
Constraints（5）Allocate the quantity of ankerite in calculate weak magnetism raw ore into, if constraints is unsatisfactory for, readjust
Iron ore exports quantity, carries out object function（1）, object function（2）And object function（3）Calculating.
By object function（1）The theoretical ore proportioning quantity of ankerite can be just calculated, using object function（2）, target
Function（3）The quality of output Ore can be further calculated, according to constraints（4）, constraints（5）, judge output Ore matter
Whether amount is up to standard, is such as unsatisfactory for quality standard, adjusts iron ore of the iron mine with mineral resources head and with ore deposit quantity, recalculates.
In the model of the present invention, by production schedule index, stope resource distribution, object function（1）Just can calculate
The theoretical ore proportioning quantity of ankerite.By calculating the quantity for allocating ankerite into, using object function（2）, object function（3）Meter
The quality of output Ore is calculated, according to constraints（4）, constraints（5）, judge whether output ore quality is up to standard.
The present invention is for other Ore class chalybeate white clouds containing alkaline matter CaO, MgO class in all weak magnetism raw ores
The recovery of stone resource is suitable for, by the rational ore matching quantity for calculating ankerite so that such resource is utilized effectively, both
The production cost in mine is reduced, mine life is extended again, reduce barren rock output, protect environment.
Orebody in Jingtieshan Hei Gou operation area is put into practice to the method within 2016, and averagely monthly to reclaim 0.6 ten thousand tons, whole year can more
7.2 ten thousand tons of the ankerite of Iron grade more than 28% is reclaimed, Iron grade is reclaimed（25~28）4.0 ten thousand tons of % ankerites；Adding up to can
Replace 110,000 tons of the periphery ore deposit of buying；300,000 tons of overall output of ore and waste is reduced, year, total wound imitated more than 10,500,000 yuan.Ankerite is in choosing
By high intensity magnetic separation or magnetizing roast-low intensity magnetic separation, concentrate CaO content is raised ore deposit after ore dressing, and Iron grade maintains an equal level or is declined slightly；
Compared with ankerite is not selected in, CaO content increases 0.1~1.0 percentage point in wine steel beneficiation concentrate；Such high calcium Haematite
When ore deposit enters sintering for agglumeration, sintering can reduce lime consumption, and concentrate Iron grade has declined can be by the metallurgical of sintering deposit
Can improvement and the flux amount allocated into of reduction and be compensated；Add less after Calx, the grade of sintering deposit will rise, and this is that ferrum is white
The reason for marble can be allocated in weak magnetism raw ore.
To the quick-fried heap sampling of ankerite ore deposit, carry out ore dressing shaft furnace and throw cage oven test research.Data are shown in Table 1.
The ankerite shaft furnace of table 1 throws cage oven test data
From the data of table 1：Ankerite washability after mineral processing production shaft furnace magnetizing roast is fabulous, Iron grade after Ore roasting
Although less than test when mineral processing production weak magnetic system to ore deposit（Closed circuit roasting dry separation is thrown after giving up）6.66 percentage points, but it is selected
Than there was only 1.87 times, concentrate quality is good, high containing CaO, calculates grade of sinter higher than 2 hundred, the concentrate that weak magnetic system is produced to ore deposit
Branch.Compared with the Orebody in Jingtieshan periphery ore deposit calcining magnetic separation data of purchase in 2016, its quality, choosing ratio are dominant；Concentrate after its roasting
Silicon low calcium is high, is shown to be high-quality Ore, and the black ditch ankerite reclaimed with ore deposit can replace periphery ore deposit.
Above-described is only the preferred embodiments of the present invention, and technical scheme is not limited thereto, it should be pointed out that
To those skilled in the art, under technology provided by the present invention enlightenment, as the common knowledge of this area, also
Other equivalent modifications and improvement can be made, protection scope of the present invention is also should be regarded as.
Claims (2)
1. a kind of ankerite allocates the ore-proportioning method in weak magnetism raw ore into, it is characterised in that：Specifically include following steps：
Plan exploitation iron ore deposit data acquisition, by existing productive prospecting data and plan exploitation stope in each
The distributed areas and grade of horizontal iron ore and ankerite are determined；It is right with reference to resource distribution situation when strip mining transformation
The sample of blasting boreholes carries out assay, draws a circle to approve detail location, quantity and Iron grade and the CaO content of ankerite；
Formulate the Iron grade and calcium oxide content target of iron ore output；
Set up iron ore and ankerite with ore deposit model；
Output ankerite matches somebody with somebody ore deposit quantity；
Described is with ore deposit model：
Object function（1）
With in ore deposit modular form：
y：Ankerite matches somebody with somebody ore deposit quantity（Ton）；
TFeOre deposit：Iron ore blast hole sample detection Iron grade（%）；
TFeMark：Iron mine plan exports Iron grade target（%）；
a：Iron ore plan exports quantity（Ton）；
TFeank：Ankerite blast hole sample detection Iron grade（%）；
The formula of the output iron mine Iron grade and output iron mine CaO is as follows：
Object function（2）
Object function（3）
In formula：
CaOOutput：Output iron mine CaO content（%）；
CaOOre deposit：Iron ore blast hole sample detection CaO content（%）；
a：Iron ore plan exports quantity（Ton）；
CaOank：Ankerite blast hole sample detection CaO content（%）；
y：Ankerite ore deposit quantity
TFeOutput：Output iron mine Iron grade（%）；
CaOOutput≤ 6% constraints（4）
TFeOOutput+ δ（CaOOutput- CaOOre deposit）≥ TFeMarkConstraints（5）
δ：The CaO content conversion of output Ore is the coefficient of Iron grade, according to test or production it was determined that span 0.4
~1.0, work as CaOOutput ≤ CaOOre depositWhen, value is 0；
CaOOre deposit：CaO content statistical data shows that it is located at 1.0~1.6% in iron ore.
2. a kind of ankerite as claimed in claim 1 allocates the ore-proportioning method in weak magnetism raw ore into, it is characterised in that：Institute
The ankerite stated is with ore deposit quantity according to object function（1）, object function（2）, object function（3）And constraints（4）, constraint
Condition（5）Allocate the quantity of ankerite in calculate weak magnetism raw ore into, if constraints is unsatisfactory for, readjust iron mine
Stone exports quantity, carries out object function（1）, object function（2）And object function（3）Calculating.
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| CN201611227513.1A CN106676259A (en) | 2016-12-27 | 2016-12-27 | Ore blending method for blending ferrodolomite into low-magnetism crude iron ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115941505A (en) * | 2022-12-06 | 2023-04-07 | 天瑞集团信息科技有限公司 | Mine intelligent ore blending method and system based on big data and geographical position information |
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| CN115941505B (en) * | 2022-12-06 | 2023-08-01 | 天瑞集团信息科技有限公司 | Mine intelligent ore matching method and system based on big data and geographic position information |
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Application publication date: 20170517 |