CN100429000C - Finery extracting method from low lump pyrite - Google Patents
Finery extracting method from low lump pyrite Download PDFInfo
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- CN100429000C CN100429000C CNB2006100342752A CN200610034275A CN100429000C CN 100429000 C CN100429000 C CN 100429000C CN B2006100342752 A CNB2006100342752 A CN B2006100342752A CN 200610034275 A CN200610034275 A CN 200610034275A CN 100429000 C CN100429000 C CN 100429000C
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Abstract
The present invention relates to a method extracting concrete from low-grade troilite ores, which is characterized in that after the troilite ores are crashed and ground, the troilite ores are sieved into coarse-particle-grade ores and fine-particle-grade ores by sieve meshes from 0.6 to 1.2mm. The granularity of bed ores is from 8 to 14mm, and the ore feeding quantity is from 1 to 3.5 t/m<2>. The coarse-particle-grade ores are separated by an h jigging mode, tailings are discarded, and jigged concentrate is obtained. After the slime of the fine-particle-grade ores is separated, the weight concentration of supplied ore pulp is from 25% to 40, and the ore feeding quantity is from 0.5 to 2.0 t/h. The tailings are discarded by spiral-slide separation, and spiral concentrate is obtained. The method of the present invention can be used for obtaining the pyrite concentrate of which the sulfur-bearing grade is from 33% to 46%. The present invention has the advantages of low ore milling cost, low separating cost, short flowing procedure, reusable returned water, etc.
Description
Technical field
The present invention relates to a kind of beneficiation method, particularly a kind of beneficiation method of troilite.
Background technology
Sulphur iron ore is one of important source material of chemical industry, is mainly used in manufacturing sulfuric acid, and in addition, it also is widely used in departments such as rubber, papermaking, weaving, food, match, particularly in order to make various explosives and smoke agent etc.Sulphur iron ore generally includes pyrite, magnetic iron ore and three kinds of ores of marcasite, because yellow iron, magnetic iron ore stone and the floatability of galvanized iron ore own are fabulous, be easy to effective collecting agent xanthate generation surface reaction in the ordinary course of things with sulfide mineral, generate double xanthate and hydrophobic, and the gangue mineral in the ore does not react with xanthate, therefore the general method that adopts flotation in the mine ore dressing process of sulphur ore deposit is separated sulphur iron ore with gangue, produces the troilite refined ore.Because floatation is that the sulfide mineral monomer is separated with gangue, gained refined ore grade is about 46%.Floatation process must carry out under thinner granularity, and ore grain size needs to add beneficiation reagent less than 0.74mm.Therefore it is higher to reclaim the sulphur iron ore production cost with float glass process, and the waste water in ore dressing plant is not only difficult to be utilized, and could discharge after often needing to be handled, otherwise will to around pollute.
Summary of the invention
The purpose of this invention is to provide a kind of low cost of concentrate, short flow process, nonpolluting method from low grade pyrite stone, chosen.
The present invention is achieved through the following technical solutions:
Behind sulphur iron ore muck ore grinding, be divided into coarse fraction ore and fine fraction ore with the mesh screen of 0.6～1.2mm, be 8～14mm by bed stone granularity, mine-supplying quantity is 1～3.5t/m
2.h jigging sorts the coarse fraction ore, abandons mine tailing, obtains jig concentrate; After the fine fraction ore is told sludge, be 25～40% by giving the ore pulp weight concentration, mine-supplying quantity is 0.5～2.0t/h, slips through spiral shell to sort, and abandons mine tailing, obtains the spiral concentrate.
Pyrite density is 4.93～5.23g/cm
3, the density of pyrite rich intergrowth is 4.02g/cm, gangue density is 2.98g/cm
3, purpose mineral and gangue mineral exist tangible density variation, so can utilize its difference, under thicker granularity, in aqueous medium, with the method for gravity treatment yellow iron are separated with gangue mineral.
Adopt beneficiation method of the present invention, can obtain the sulfur-bearing grade and be 33～46% troilite concentrate, can satisfy the needs of sulfuric acid plant.The present invention compared with prior art has the following advantages and good effect:
1. the ore grinding expense is few.Can (realize separating of sulphur iron ore and gangue in the ore grain size≤3mm), compare, can save ore ore grinding expense in thicker grade with conventional method.
2. the expense that sorts is low.Sorting is carried out in aqueous medium, not only can save the beneficiation reagent expense, and can avoid medicament that environment is polluted.
3. flow process is short.Adopt one roughing can obtain the qualified concentrate containing and the higher rate of recovery.
4. backwater can be reused.Gravity treatment is than carrying out under the coarse fraction, and the backwater of gravity mill 80% can utilize again.
Description of drawings
Fig. 1 is a flow chart of the present invention.
The specific embodiment
To-5mm, is that the sieve of 0.6～1.2mm sieve with sieve aperture with ore reduction, ore grinding, and the coarse fraction ore on the sieve is sent into jig washer and sorted, and obtains jig concentrate, and its mine tailing abandons as barren rock.The classified case of fine fraction ore under the sieve enters spiral concentrator and sorts after telling sludge less than 0.043mm, obtains the spiral concentrate of two kinds of grades, and its mine tailing abandons as barren rock, the results are shown in Table 1.
Table 1
Embodiment 1,3,5 is respectively ribbon sample ore, compact shape sample ore, mixes sample ore, its granularity reaches-3mm behind the muck ore grinding, with sieve aperture is that the vibratory sieve of 0.6mm sieves, partition size is 0.5mm, ore enters jig washer and sorts on the sieve, sieve down the classified case of ore tell-sludge of 0.043mm after, enter spiral concentrator and sort.
Adopt that sawtooth pulsation jig, mine-supplying quantity are respectively 1.0,1.2,1.5t/m
2.h, bed stone granularity 8～9mm.
Adopt cubic parabola type Φ 900 type spiral concentrators, mine-supplying quantity is respectively 0.6,0.8,1.0t/h, and feed ore concentration is respectively 25,30,35%.
Embodiment 2,4 is respectively ribbon sample ore, compact shape sample ore, its granularity reaches-4mm behind the muck ore grinding, with sieve aperture is that the vibratory sieve of 1.2mm sieves, partition size is 1mm, ore enters jig washer and sorts on the sieve, sieve down the classified case of ore tell-sludge of 0.043mm after, enter spiral concentrator and sort.
Adopt that diaphragm jig, mine-supplying quantity are respectively 2.5,3.5t/m
2. hour, bed stone granularity 12～14mm.
Adopt GL Φ 600 type spiral concentrators, mine-supplying quantity is respectively 1.2,1.8t/h, and feed ore concentration is respectively 25,35%.
Claims (1)
1. a method of choosing concentrate from low grade pyrite stone is characterized in that behind the sulphur iron ore muck ore grinding, is divided into coarse fraction ore and fine fraction ore with the mesh screen of 0.6～1.2mm, is 8～14mm by bed stone granularity, and mine-supplying quantity is 1～3.5t/m
2.h jigging sorts the coarse fraction ore, abandons mine tailing, obtains jig concentrate; After the fine fraction ore is told sludge, be 25～40% by giving the ore pulp weight concentration, mine-supplying quantity is 0.5～2.0t/h, slips through spiral shell to sort, and abandons mine tailing, obtains the spiral concentrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100342752A CN100429000C (en) | 2006-03-14 | 2006-03-14 | Finery extracting method from low lump pyrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100342752A CN100429000C (en) | 2006-03-14 | 2006-03-14 | Finery extracting method from low lump pyrite |
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| Publication Number | Publication Date |
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| CN1817471A CN1817471A (en) | 2006-08-16 |
| CN100429000C true CN100429000C (en) | 2008-10-29 |
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| CNB2006100342752A Expired - Fee Related CN100429000C (en) | 2006-03-14 | 2006-03-14 | Finery extracting method from low lump pyrite |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101413057B (en) * | 2008-03-05 | 2011-03-30 | 中南大学 | Method for efficiently separating low-ore grade and complicated iron ore |
| CN101368734B (en) * | 2008-09-23 | 2010-10-13 | 贵州大学 | Desulfurizing recycle method for high sulfur medium-tail coal |
Citations (7)
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| CN1057213A (en) * | 1990-06-09 | 1991-12-25 | 冶金部马鞍山钢铁设计研究院 | Process for dressing iron from low-rank iron pyrites roasted slag |
| US5108584A (en) * | 1990-10-09 | 1992-04-28 | Raymond Brosseuk | Apparatus for extrating heavy metals from ore |
| US5203461A (en) * | 1991-10-04 | 1993-04-20 | R. A. Hanson Company, Inc. | Mineral jig apparatus |
| US5452805A (en) * | 1994-02-02 | 1995-09-26 | Carpco, Inc. | Spiral separator |
| CN1109385A (en) * | 1994-04-21 | 1995-10-04 | 北京矿冶研究总院 | Multi-section spiral chute |
| CN1296862A (en) * | 2000-12-16 | 2001-05-30 | 马鹏飞 | Washing separation process and equipment for combined multifunctional apparatus |
| CN1579639A (en) * | 2004-05-21 | 2005-02-16 | 谷正康 | Screen mesh-circular groove concentrating ore dressing method and equipment |
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2006
- 2006-03-14 CN CNB2006100342752A patent/CN100429000C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057213A (en) * | 1990-06-09 | 1991-12-25 | 冶金部马鞍山钢铁设计研究院 | Process for dressing iron from low-rank iron pyrites roasted slag |
| US5108584A (en) * | 1990-10-09 | 1992-04-28 | Raymond Brosseuk | Apparatus for extrating heavy metals from ore |
| US5203461A (en) * | 1991-10-04 | 1993-04-20 | R. A. Hanson Company, Inc. | Mineral jig apparatus |
| US5452805A (en) * | 1994-02-02 | 1995-09-26 | Carpco, Inc. | Spiral separator |
| CN1109385A (en) * | 1994-04-21 | 1995-10-04 | 北京矿冶研究总院 | Multi-section spiral chute |
| CN1296862A (en) * | 2000-12-16 | 2001-05-30 | 马鹏飞 | Washing separation process and equipment for combined multifunctional apparatus |
| CN1579639A (en) * | 2004-05-21 | 2005-02-16 | 谷正康 | Screen mesh-circular groove concentrating ore dressing method and equipment |
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| 非正弦跳汰曲线对自重介跳汰分选的影响. 李睿华，张强.北京科技大学学报，第17卷第4期. 1995 |
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