CN107433226A - A kind of method that acid sludge recycles - Google Patents
A kind of method that acid sludge recycles Download PDFInfo
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- CN107433226A CN107433226A CN201610360248.8A CN201610360248A CN107433226A CN 107433226 A CN107433226 A CN 107433226A CN 201610360248 A CN201610360248 A CN 201610360248A CN 107433226 A CN107433226 A CN 107433226A
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- acid sludge
- magnetic
- recycles
- ore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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Abstract
The present invention provides a kind of method that acid sludge recycles.This method is：By alkaline ore and acid sludge according to（3‑4）:Sorted after 1 ratio mixing.Described alkaline ore includes one or more kinds of combinations in magnetic iron ore, bloodstone, siderite, limonite, magnetic iron ore.Acid sludge is mixed into alkaline ore and sorted by the present invention, and on the one hand acid sludge is recycled, the rate of recovery of alkaline ore is on the other hand improved, kills two birds with one stone.
Description
Technical field：
The present invention relates to a kind of method that acid sludge recycles, belong to technical field of beneficiation.
Background technology：
In sulphuric acid process, the sulphur generation sulfuric acid in pyrite, iron and other elements are transferred in sulfate slag, in sulfate slag
Ferrous grade reaches more than 60%, but due to reaching more than 2% containing sulfur content in acid sludge, it is impossible to meet blast furnace process requirement, therefore,
It cannot be directly used to smelt iron.It is generally necessary to after carrying out desulfuration operations, the sulfur content in acid sludge is dropped to less than 0.45%, or will
Acid sludge is directly mixed in the relatively low iron ore concentrate of sulfur-bearing and is used.
When the ferrous grade in sulfate slag<When 60%, generally also need to put forward the sorting process of iron sulfur reduction.At traditional acid sludge
Reason method has：The methods of magnetic separation, gravity treatment, gravity treatment-magnetic separation joint, ore grinding-flotation.Magnetic separation is mainly used in improving ferromagnetism in acid sludge
Iron mineral, magnetic separation process flow is simple, and main process and condition are that acid sludge is adjusted into finite concentration, is 850- using magnetic field intensity
1500Oe magnetic separator is sorted, and obtains ferrous grade more than 60%, iron ore concentrate of the sulfur-bearing below 1%, rate of recovery 70%-85%,
The acid sludge that this method is mainly suitable for based on magnetic iron ore sorts.It is general using weight for the acid sludge based on bloodstone, magnetic iron ore
The united method of choosing-magnetic separation, main process are：Acid sludge selects bloodstone therein through gravity treatment, then magnetic iron ore, ore dressing are selected in magnetic separation
Equipment is mainly magnetic separator, shaking table or spiral chute, and this method can make the sulfate slag of Iron grade 42%.Yield more than 56% is obtained,
Iron content more than 55%, the iron ore concentrate of the rate of recovery more than 74%.
Ore grinding-flotation is mainly to obtain the recoverying and utilizing method of Iron grade more than 60%, and main process is：First by sulfuric acid
Slag carries out selective milling in grinding machine, ore milling concentration 20-80%, obtains the mesh 70%-95% of ore milling product fineness -200, qualified mill
Mineral products add waterglass in tank diameter to be disperseed, and then adds fatty acid collecting agent, iron ore concentrate is obtained through flotation.
Above method can recycle to acid sludge, but due to method inherently the defects of, the iron ore concentrate of acquisition
It can not meet smelting requirements, or the power consumption of method implementation process is higher, without economic feasibility.
The content of the invention
The purpose of the present invention is to provide a kind of method of acid sludge recycling for above-mentioned problem, and acid sludge is mixed into
Alkaline ore is sorted, and on the one hand acid sludge is recycled, and on the other hand improves the rate of recovery of alkaline ore, one action two
.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of method that acid sludge recycles, this method are：By alkaline ore and acid sludge according to（3-4）:1 ratio mixing is laggard
Row sorts.
The method that described acid sludge recycles, described alkaline ore include magnetic iron ore, bloodstone, siderite, brown iron
One or more kinds of combinations in ore deposit, magnetic iron ore.
The method that described acid sludge recycles, the described technological process sorted are：Concentrate-swim using concentrator
Roughing-swim and scan-swim selected-weak magnetic roughing-weak magnetic scan-concentrate-high frequency fine screen every slag-strong magnetic roughing-
Strong magnetic is scanned.
The method that described acid sludge recycles, the concentration of described concentrator use CN-25m center driving concentrators.
The method that described acid sludge recycles, described roughing of swimming, flotation are scanned using SKCF031 type flotation machines,
Dischargeable capacity 30m3。
The method that described acid sludge recycles, described flotation is selected to use SKCF033 type flotation machines, dischargeable capacity
6m3 。
The method that described acid sludge recycles, described weak magnetic roughing use the adverse current type permanent-magnet chamber type magnetic of φ 1500mm half
Select machine, magnetic field intensity 2000Oe.
The method that described acid sludge recycles, described weak magnetic are scanned using the adverse current type permanent-magnet chamber type magnetic of φ 1500mm half
Select machine, magnetic field intensity 3000Oe.
The method that described acid sludge recycles, described strong magnetic roughing use φ 1750mm pulsating high gradient magnetic separators,
Horizontal magnetic system, φ 2mm dielectric rods, magnetic field intensity 1.0T.
The method that described acid sludge recycles, described strong magnetic are scanned using φ 2500mm Slon pulsating high gradient magnetic
Select machine, vertical magnetic system, φ 2mm dielectric rods, magnetic field intensity 1.2T.
Beneficial effect：
Sorted 1. acid sludge is mixed into alkaline ore by the present invention, on the one hand acid sludge is recycled, on the other hand can be carried
The rate of recovery of high alkalinity ore.Specially the acid sludge of Iron grade 62% is mixed with the alkaline ore of Iron grade 46% and sorts to obtain iron
The iron ore concentrate of grade 57%, the rate of recovery 90.42%, and the alkaline ore of single Iron grade 46% sorts to obtain the iron of Iron grade 57%
The rate of recovery 88.06% of concentrate.Principle be the acid sludge of Iron grade 62% through sorting to obtain the iron ore concentrate of Iron grade 57% when, it is necessary to mixed
Enter low-grade ore, Iron grade is down to 57% by 62%, make when alkaline ore is single to be sorted into the poor value of mine tailing
Concentrate is entered, so as to improve the rate of recovery of alkaline ore.
Brief description of the drawings
Accompanying drawing 1 is process chart of the invention.
Embodiment
With reference to embodiment, the present invention is furture elucidated, it should be understood that following embodiments are only used for
The bright present invention rather than limitation the scope of the present invention.
A kind of method that acid sludge recycles, this method are：By alkaline ore and acid sludge according to（3-4）:1 ratio mixing
After sorted, preferably 3.6：1.
The method that described acid sludge recycles, described alkaline ore include magnetic iron ore, bloodstone, siderite, brown iron
One or more kinds of combinations in ore deposit, magnetic iron ore.
The method that described acid sludge recycles, the described technological process sorted are：Concentrate-swim using concentrator
Roughing-swim and scan-swim selected-weak magnetic roughing-weak magnetic scan-concentrate-high frequency fine screen every slag-strong magnetic roughing-
Strong magnetic is scanned.
The method that described acid sludge recycles, the concentration of described concentrator use CN-25m center driving concentrators.
The method that described acid sludge recycles, described roughing of swimming, flotation are scanned using SKCF031 type flotation machines,
Dischargeable capacity 30m3。
The method that described acid sludge recycles, described flotation is selected to use SKCF033 type flotation machines, dischargeable capacity
6m3 。
The method that described acid sludge recycles, described weak magnetic roughing use the adverse current type permanent-magnet chamber type magnetic of φ 1500mm half
Select machine, magnetic field intensity 2000Oe.
The method that described acid sludge recycles, described weak magnetic are scanned using the adverse current type permanent-magnet chamber type magnetic of φ 1500mm half
Select machine, magnetic field intensity 3000Oe.
The method that described acid sludge recycles, described strong magnetic roughing use φ 1750mm pulsating high gradient magnetic separators,
Horizontal magnetic system, φ 2mm dielectric rods, magnetic field intensity 1.0T.
The method that described acid sludge recycles, described strong magnetic are scanned using φ 2500mm Slon pulsating high gradient magnetic
Select machine, vertical magnetic system, φ 2mm dielectric rods, magnetic field intensity 1.2T.
Sort case：
The index of acid sludge：
Fe clusters：
Multielement analysis：
The independent sorting index of acid sludge：
The ore properties of alkaline ore：
Enriched fineness：Concentration 34%-38%, fineness<0.074 μm of content accounts for 62-70%.
Fe clusters are analyzed：
Multielement analysis：
According to alkaline ore：Acid sludge 6：After 1 mixing, the sorting index through the technological process：
Note：Weak magnetic rougher concentration is referred to as iron ore concentrate after merging with weak magnetic scavenger concentrate.
The calculating of acid sludge ratio of concentration：
Acid sludge concentrate yield * acid sludges synthesis concentrate Iron grade+35%* alkalescence mineral products rate=（Acid sludge yield+alkaline mineral products rate）* integrate
Essence.Ore deposit Iron grade：
Alkaline ore yield=（Acid sludge concentrate yield * acid sludges synthesis concentrate Iron grade-synthesis concentrate Iron grade * acid sludge yields）/
(comprehensive concentrate Iron grade -35%) * 100%.
Alkaline ore yield=(87.37%*67.95%-56.7%*87.37%)/(56.7%-35%) * 100%
=45.3%。
Ore removal ratio=（Acid sludge yield+alkaline ore yield）× loss
=（87.37%+45.3%）*0.95
=1.26。
Claims (10)
1. a kind of method that acid sludge recycles, it is characterized in that：This method is：By alkaline ore and acid sludge according to（3-4）:1
Sorted after ratio mixing.
2. the method that acid sludge according to claim 1 recycles, it is characterized in that：Described alkaline ore includes magnet
One or more kinds of combinations in ore deposit, bloodstone, siderite, limonite, magnetic iron ore.
3. the method that acid sludge according to claim 1 or 2 recycles, it is characterized in that：The described technological process sorted
For：Concentrated using concentrator-roughing of swimming-swim scan-swim selected-weak magnetic roughing-weak magnetic scan-concentrate-it is high
Frequency dusting cover is scanned every slag-strong magnetic roughing-strong magnetic.
4. the method that acid sludge according to claim 3 recycles, it is characterized in that：Described concentrator concentration uses CN-
25m center driving concentrators.
5. the method that acid sludge according to claim 3 recycles, it is characterized in that：Described roughing of swimming, flotation are scanned
Using SKCF031 type flotation machines, dischargeable capacity 30m3。
6. the method that acid sludge according to claim 3 recycles, it is characterized in that：The selected use of described flotation
SKCF033 type flotation machines, dischargeable capacity 6m3 。
7. the method that acid sludge according to claim 3 recycles, it is characterized in that：Described weak magnetic roughing uses φ
The adverse current type permanent-magnet drum type magnetic separators of 1500mm half, magnetic field intensity 2000Oe.
8. the method that acid sludge according to claim 3 recycles, it is characterized in that：Described weak magnetic is scanned using φ
The adverse current type permanent-magnet drum type magnetic separators of 1500mm half, magnetic field intensity 3000Oe.
9. the method that acid sludge according to claim 3 recycles, it is characterized in that：Described strong magnetic roughing uses φ
1750mm pulsating high gradient magnetic separators, horizontal magnetic system, φ 2mm dielectric rods, magnetic field intensity 1.0T.
10. the method that acid sludge according to claim 3 recycles, it is characterized in that：Described strong magnetic is scanned using φ
2500mm Slon pulsating high gradient magnetic separators, vertical magnetic system, φ 2mm dielectric rods, magnetic field intensity 1.2T.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610360248.8A CN107433226A (en) | 2016-05-27 | 2016-05-27 | A kind of method that acid sludge recycles |
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| CN201610360248.8A CN107433226A (en) | 2016-05-27 | 2016-05-27 | A kind of method that acid sludge recycles |
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| CN201610360248.8A Pending CN107433226A (en) | 2016-05-27 | 2016-05-27 | A kind of method that acid sludge recycles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746118A (en) * | 2019-03-20 | 2019-05-14 | 中钢集团马鞍山矿山研究院有限公司 | A kind of method for separating of high-sulfate iron ore |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669662A (en) * | 2004-09-17 | 2005-09-21 | 武汉科技大学 | Method and equipment for sorting and purifying pyrite residue |
| CN102225374A (en) * | 2011-05-18 | 2011-10-26 | 大冶有色设计研究院有限公司 | Method for recovering iron from pyrite cinder |
| CN105032609A (en) * | 2015-07-22 | 2015-11-11 | 南京梅山冶金发展有限公司 | Iron ore iron-increasing and silicon-reduction process |
| US20160129454A1 (en) * | 2013-03-15 | 2016-05-12 | Fritz Enterprises, Inc. | System and method for recovery of valuable constituents from steel-making slag fines |
| CN105597941A (en) * | 2016-03-08 | 2016-05-25 | 山东理工大学 | Technological method for extracting iron fine powder from pyrite cinder |
-
2016
- 2016-05-27 CN CN201610360248.8A patent/CN107433226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669662A (en) * | 2004-09-17 | 2005-09-21 | 武汉科技大学 | Method and equipment for sorting and purifying pyrite residue |
| CN102225374A (en) * | 2011-05-18 | 2011-10-26 | 大冶有色设计研究院有限公司 | Method for recovering iron from pyrite cinder |
| US20160129454A1 (en) * | 2013-03-15 | 2016-05-12 | Fritz Enterprises, Inc. | System and method for recovery of valuable constituents from steel-making slag fines |
| CN105032609A (en) * | 2015-07-22 | 2015-11-11 | 南京梅山冶金发展有限公司 | Iron ore iron-increasing and silicon-reduction process |
| CN105597941A (en) * | 2016-03-08 | 2016-05-25 | 山东理工大学 | Technological method for extracting iron fine powder from pyrite cinder |
Non-Patent Citations (2)
| Title |
|---|
| 胡修林等: "酸渣磁铁矿的合理开发与利用", 《选煤技术》 * |
| 衣德强等: "梅山铁矿硫的浮选", 《宝钢技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746118A (en) * | 2019-03-20 | 2019-05-14 | 中钢集团马鞍山矿山研究院有限公司 | A kind of method for separating of high-sulfate iron ore |
| CN109746118B (en) * | 2019-03-20 | 2020-05-19 | 中钢集团马鞍山矿山研究院有限公司 | Method for sorting high-sulfate iron ore |
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