CN1246081C - Screen mesh-circular groove concentrating ore dressing method and equipment - Google Patents
Screen mesh-circular groove concentrating ore dressing method and equipment Download PDFInfo
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- CN1246081C CN1246081C CN 200410022614 CN200410022614A CN1246081C CN 1246081 C CN1246081 C CN 1246081C CN 200410022614 CN200410022614 CN 200410022614 CN 200410022614 A CN200410022614 A CN 200410022614A CN 1246081 C CN1246081 C CN 1246081C
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Abstract
The present invention relates to an enriching and ore dressing method of a circular groove of a mesh screen, and equipment of the method. The method of the present invention comprises the following steps: water is added into old tailings to form ore slurry which is divided into two particle grades of oversize products and undersize products by an inclined mesh screen, the undersize products are screened in a multi-section mode by the circular groove to obtain a groove tip product, and a groove tail is discarded. The inclined mesh screen is provided with a screen mesh and a screen frame, an ore feeding tube is positioned above a screen surface to feed ore in a spraying type, and the groove surface of the circular groove is used as the upper half part of a circular ball. The present invention has the characteristics of high screening efficiency, low energy consumption, large treating capacity, high classification precision, no power consumption in the screening process of the circular groove, good ore dressing effect and low operating cost; when the grade of selected tin is from 0.15 to 0.3%, the extraction yield can reach 60 to 80%; compared with the prior art, the production cost of the present invention is reduced by more than 50%. The present invention can also be used for recovery of metallic minerals, such as lead, zinc, tungsten, niobium, tantalum, gold, silver, etc.
Description
Technical field the invention belongs to a kind of at tailing, particularly tin tailing mesh screen circular groove beneficiating method.
Background technology tin is the important non-ferrous metal raw materials of many industries, the resource of tin is very limited in the world, owing to easily select the continuous disappearance of tin resource, the exploitation and the beneficiation cost of tin ore are more and more higher, sort and abandoned a large amount of tailings and go up century-old exploitation, since technology and historical reasons, in these tailings, contain a large amount of tin metal and be difficult to reclaim.Such as, the main tin place of production of China, Geju City, Yunnan, individual surplus the big or small tailing storehouse of Xing Chenging just has 20 in decades, by time at the bottom of nineteen eighty-three 12522 ten thousand tons of mine tailing reserves are just arranged, average tin grade 0.15%, 190,000 tons of tin metal.Add more than 20 year continue store up, the tin metal amount is calculated by present market price about 300,000 tons in these mine tailing storehouses, potential value is 24,000,000,000 yuans.Also there are certain tin tailing resource, the problem that also exists tailing to reclaim again in product tin states such as Brazil, Malaysia in ground such as Guangxi, Hunan.
Since the tailing of tin generally all exist fine size, monomer cassiterite few, with multiple metalliferous mineral, particularly with characteristics such as the fine and close symbiosis of the mineral of iron, tin grade are low, washability is poor, the valuable metal deironing of symbiosis and association is outside the independent mineral existence more, and other is the dispersity tax and is stored in the iron manganese mineral.Therefore, the development and utilization tailing exists great difficulty on present technique of preparing, and it depends on technology and economic overall balance.People have dropped into the research that great amount of manpower and financial resources are carried out recycling for a long time, and nineteen eighty-three cloud tailing ore dressing national science and technology research project is wherein just arranged, and four scientific research institutions, the whole nation have participated in tackling key problem.The scheme that tackling key problem proposes is that the classified back of full mine tailing adopts the super-magnum centrifuge of 2 meters of diameters to roughly select, belt chute and six layers of shaking table essence are scanned, sub-elect the concentrate (or rich chats) and the poor chats of high ferro of low iron again through magnetic separator, the recovery rate in ore-dressing of pilot scale is 56%.Because this formula investing is big, cost is high (mainly being full mine tailing power consume height), of poor benefits and reason such as have a big risk, and is not used after being expounded through peer review.Though after this have some new schemes to propose, even have production to go up the scheme that adopts, flow process is long, operation is many, and problem is many, index error.Flow process as certain mine tailing selecting and purchasing factory will once be divided the stone desliming earlier for entering the ore pulp that selects factory, then carries out bolting and ore grinding, every slag, and pump to weighing apparatus presses the pond to carry out hydraulic classiciation several times with cyclone just to go up shaking table and carry out multistage and sort multistage grinding then.Ore pulp is circulation back and forth in this long flow process, has consumed a large amount of power, particularly ore grinding, vibratory sieve and shaking table, makes beneficiation cost very high, and economic benefit is very poor, and recovery rate in ore-dressing just reaches 30-45%.
Summary of the invention the objective of the invention is to propose that a kind of energy consumption is low, operation is few, cost is low, reasonable flowsheet structure, mesh screen circular groove enrichment beneficiating method that beneficiating technology index is good, to overcome the deficiency of existing tin tailing recovery technology.
This mesh screen circular groove enrichment beneficiating method that the present invention proposes is characterized in that it contains to have the following steps:
(3) tailing is added water furnishing ore pulp, be divided into oversize and two grades of screenings with mesh screen;
(4) screenings with circular groove sort groove point product, the groove tail drop.
Used mesh screen is the inclined-plane mesh screen, and the mesh of screen cloth is the 40-80 order, and the compass screen surface inclination angle is the 5-80 degree, and the mineral-feeding pipe injecting type is given the ore deposit.
The hop count that circular groove sorts is the 1-4 section, and every section groove tail all abandons.
The selected pulp density of circular groove is 8-30%, sends into a high-order reserve pit earlier before being selected in, and is assigned to groove face through divider again.
The equipment that the present invention is used, the inclined-plane mesh screen, it has screen cloth and screen frame (unit), it is characterized in that screen cloth is installed on the screen frame (unit), screen cloth mesh 40-80 order, screen angle is the 5-80 degree, mineral-feeding pipe is positioned at the compass screen surface top and is communicated with pressure tank.Perhaps link to each other with husky pump.
The screen cloth mesh is good with 60 orders, and the inclination angle is good with the 40-50 degree.
Screen frame (unit) is fixing, that masonry is built into or folding.
The equipment that the present invention is used, circular groove, the groove face that it is characterized in that it are the first half of a ball.
The sphere of circular groove is a 1-5 rice with the circle diameter that bottom land passes through gained mutually, and the groove height is the 300-600 millimeter.
Ore dressing process of the present invention is: tailing is dashed with hydraulic giant, go up screening by gravity flow or pump to the inclined-plane sieve, oversize mostly is the extremely low foreign material of grade, allows its gravity flow enter tailings reservoir for piling.Screenings falls into a pond, sends into the reserve pit of a high position after sizing mixing, and the pond is assigned to the next stage mine distributor thus again, is assigned to each circular groove equably by mine distributor and sorts, and the product of circular groove gained is called the groove point.Discarded object is called the groove tail, sends into tailings reservoir for piling.The groove point is selected through two sections, the inferior concentrate of tin grade 3-6%, when selected grade greater than 0.13% the time, the casting yield of tin can reach 60-80%.Existing beneficiation cost is ten thousand yuan of per ton concentrate stanniferous 1.3-2.5, and price can reach ten thousand yuan of 5-6.Cost is than the on average low 40-60% of prior art.
The characteristics of beneficiation method of the present invention are that screening efficiency height, energy consumption are low, treating capacity is big, the effectiveness of classification height, the characteristics that meet the tin tailing, circular groove sort does not need power, and gravity flow can realize evenly sorting by ore pulp, good separation effect, operating cost is low, and this is the key point why the present invention can realize large-scale production, also is creative place of the present invention.
The used inclined-plane sieve structure of the present invention is simple, make easily, the cooperation of angle and screen cloth mesh is reasonable, screening efficiency height, treating capacity are big, are difficult for blocking, and produce smooth and easy, the not special manufacturing requirement of circular groove, only use concrete for making, generally the workman all can build by laying bricks or stones, its low energy consumption even do not have the operating type of energy consumption, constituted combined effect of the present invention with the inclined-plane sieve, be particularly suitable for technology of the present invention and use.
The present invention also can be used for the recovery of metalliferous minerals such as lead, zinc, tungsten, niobium, tantalum and gold and silver except being used to reclaim the tin tailing.
Appended drawings 1 is an inclined-plane of the present invention sieve front view.
Accompanying drawing 2 is inclined-plane of the present invention sieve left views.
Accompanying drawing 3 is circular groove front views of the present invention (normal cross-section).
Accompanying drawing 4 is vertical views of circular groove of the present invention.
Accompanying drawing 5 is principle flow charts of ore-dressing technique of the present invention.
Among the accompanying drawing 1-4, the label of each parts is as follows:
1-mesh screen mineral-feeding pipe; 2-screen cloth; 3-screen frame (unit); 4-circular groove bottom surface; 5-circular groove body; 6-circular groove mineral-feeding pipe.
The average stanniferous 0.216% in tailing storehouse, stannary, Geju City, specific embodiment Yunnan, 0.03 millimeter of particle mean size, last century eight, the nineties, methods such as domestic many R﹠D institutions adopted once that gravity treatment, gravity treatment-wadding are floating, weight-magnetic and flotation were carried out many laboratories or pilot-plant test, when concentrate grade reaches 2-2.28%, the rate of recovery only is 50-65%, and the technology more complicated, and beneficiation cost is high and can't adopt.Calendar year 2001 adopts technology of the present invention and equipment to set up one in selecting and purchasing factory and reclaims.Tailing adopts the hydraulic giant exploitation to add and delivers to the inclined-plane sieve after water is sized mixing, be divided into two-stage, screen cloth (2) is 60 meshes, inclination angle 45 degree, and screen frame (unit) (3) is welded into some wastes of iron and steel, several piece screen cloth lapping is fixed on the screen frame (unit), the position of mesh screen mineral-feeding pipe (1) as shown in drawings, mineral-feeding pipe is in the face of some apertures of screen cloth one sidetracking, pipe one end blocks, allow ore pulp be the radial compass screen surface that is given to, oversize and screenings are all flowed down by deadweight enter sedimentation basin separately respectively or broadcast ditch.After screenings was adjusted concentration, the reserve pit of pump to a high position was distributed into by this reserve pit and somely strand enters several mine distributors, sorted on the circular groove body (5) surplus being assigned to 200 by mine distributor again.Circular groove is the batch (-type) operation, and ore pulp is fed by circular groove mineral-feeding pipe (6) from the groove top, and the groove point is formed at heavy mineral is enriched in groove in the process of flowing from top to bottom top, and light mineral then rushes at groove bottom (5) and is the groove tail.Behind the enrichment certain hour, stop in turn to the ore deposit, the groove nose part heavy mineral on intercepting top, the groove tail discharges water and pours the mine tailing ditch and drain, after concentrating, the groove point of getting sizes mixing, sometimes carry out carrying out again behind the suitable ore grinding circular groove enrichment of secondary or three times, the part that intercepts for the first time groove point topmost can be semi-finished product, remaining part carries out the flowing current separation second time, until proceeding to for the third time, finishing three sections sorts, three sections groove point topmost portion products that obtain are merged the inferior concentrate that promptly obtains stanniferous 3-6%, the inferior concentrate of this moment reaches 60-80% to the casting yield of giving the ore deposit, normal conditions are 75-77%, and the selecting and purchasing cost is ten thousand yuan of per ton concentrate stanniferous 1.3-2.5, are the equal of about 50% of existing six layers of shaking table and belt chute treatment process.This time concentrate adopts the method for existing shaking table, suitable ore grinding to be processed into the tin concentrate of stanniferous 40%, and production cost is raised to ten thousand yuan of concentrate stanniferous 3-3.5 per ton.Inferior concentrate also can be used the selected qualified concentrate containing that gets of circular groove, and cost is lower.
In this example, the circular groove cell body is a 2-3.2 rice with the circle diameter that groove bottom is passed through formation mutually, and the groove height is the 470-520 millimeter, every 7-8 hour intercepting groove point once.
To the tailing storehouse of another similar performance in mining area, Geju City, in the selecting and purchasing factory of foundation, adopt 660 circular grooves, long 75 meters, high 2 a meters inclined-plane sieve, flowage structure is the same, and selected grade is 0.2%, inferior concentrate grade 4-5%, casting yield reaches 75-81%, and beneficiation cost is lower than goes up example.
At present, the applicant has set up five tailing selecting and purchasing factories with the present invention in mining area, Geju City, and benefit is obvious, obtains the parties concerned certainly, and just matters and certain tin industry company of expansion enforcement the technology of the present invention sign an agreement, and develop tailing jointly.
Claims (4)
1, a kind of mesh screen circular groove enrichment beneficiating method is characterized in that it contains to have the following steps:
(1) mine tailing is added water furnishing ore pulp, be divided into oversize and two grades of screenings with mesh screen;
(2) screenings circular groove, promptly the first half of ball sort groove point product, the groove tail drop.
2, beneficiating method according to claim 1 is characterized in that used mesh screen is the inclined-plane mesh screen, and the mesh of screen cloth is the 40-80 order, and the compass screen surface inclination angle is the 5-80 degree, and the mineral-feeding pipe injecting type is given the ore deposit.
3, beneficiating method according to claim 1 is characterized in that the hop count that circular groove sorts is the 1-4 section, and every section groove tail all abandons.
4, beneficiating method according to claim 1, the selected pulp density that it is characterized in that circular groove is 8-30%, sends into a high-order reserve pit earlier before being selected in, and is assigned to groove face through divider again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022614 CN1246081C (en) | 2004-05-21 | 2004-05-21 | Screen mesh-circular groove concentrating ore dressing method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022614 CN1246081C (en) | 2004-05-21 | 2004-05-21 | Screen mesh-circular groove concentrating ore dressing method and equipment |
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| CN1579639A CN1579639A (en) | 2005-02-16 |
| CN1246081C true CN1246081C (en) | 2006-03-22 |
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| CN 200410022614 Expired - Fee Related CN1246081C (en) | 2004-05-21 | 2004-05-21 | Screen mesh-circular groove concentrating ore dressing method and equipment |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100429000C (en) * | 2006-03-14 | 2008-10-29 | 广州有色金属研究院 | Finery extracting method from low lump pyrite |
| CN104941781B (en) * | 2015-06-30 | 2017-10-24 | 广西华锡集团股份有限公司车河选矿厂 | The dressing method of polymetallic ore |
| CN108709833A (en) * | 2018-05-17 | 2018-10-26 | 北京城建勘测设计研究院有限责任公司 | A kind of grading analysis device and method for in-situ test |
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Granted publication date: 20060322 Termination date: 20140521 |