CN101618363B - Process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores - Google Patents
Process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores Download PDFInfo
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- CN101618363B CN101618363B CN2009100234145A CN200910023414A CN101618363B CN 101618363 B CN101618363 B CN 101618363B CN 2009100234145 A CN2009100234145 A CN 2009100234145A CN 200910023414 A CN200910023414 A CN 200910023414A CN 101618363 B CN101618363 B CN 101618363B
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Abstract
The invention provides a process for discarding tailings in the mechanical beneficiation of absorption-state vanadium ores. The process comprises the following steps: crushing and grinding the absorption-state vanadium ores to negative 200 meshes; beneficiating on a spiral concentrator or a spiral chute; collecting fine-fraction minerals and light minerals as spiral concentrate; and carrying out floatation operation on heavy minerals and coarse-fraction minerals by using H2SO4 as the pH regulator to regulate the pH value to 4 to 6, using dodecyl amine-hydrochloride as the collector with the amount of 100 to 500g/t, and using isooctanol as the frother with the amount of 5 to 50g/t to carry out the flotation from section one to section ten, wherein, the floating foam part and the spiral concentrate are merged to constitute the main concentrate; and the part in the chute constitutes the main tailings to be discarded. The invention has the advantages that the process is direct and efficient, and the cost is low, the range of beneficiation is wide, the adaptability to ores with various properties is high, the tailings can be pre-discarded before chemical vanadium extraction so as to increase the content of V2O5 of the materials of the chemical vanadium extraction, and the production cost can be obviously reduced.
Description
Technical field
The present invention relates to a kind of mechanical beneficiation process for discarding tailings in advance, be specifically related to a kind of process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores.
Background technology
China's navajoite resource is very abundant, and wherein the absorption-state vanadium ores distribution is very extensive, and the characteristics of this class ore are that vanadium does not have independent mineral, are adsorbed in other the mineral.Because it is low that ore contains vanadium, before carrying out chemical vanadium extraction, be difficult to again carry out the mechanical beneficiation enrichment, thereby cause entering the ore V of chemical vanadium extraction operation
2O
5Content is low, gross weight is big, make the vanadium extraction cost high, recent years, a lot of scientific and technical personnel launched research to this, present mechanical beneficiation method mainly is the classification enrichment, also has the people to launch certain work at floatation process, but its limitation to ore is very big, therefore searching out suitable mechanical beneficiation method carries out enrichment to absorption-state vanadium ores, makes the ore V that enters chemical vanadium extraction operation
2O
5Content improves, and gross weight reduces, thereby makes chemical vanadium extraction cost, is an extremely important and urgent problem.
In the absorption-state vanadium ores, vanadium is dispersed in each mineral, wherein nature is modal is quartz, mica, clay mineral, carbonate mineral etc., most this class navajoite stone, the content of vanadium in quartz is low, and the content height in other mineral, and quartzy general content in ore is all higher, and therefore can effectively quartz be separated is a basis of mechanical enrichment.
Quartz is that hardness is big with other mineral facies than at first, therefore it may be in the coarse fraction enrichment in broken grinding process, but when occurring layer silicate mineral (as mica etc.) in the ore, these class mineral are inconsistent in the granularity of different cleavage surfaces in grinding process, therefore very big by the classification limitation of dealing with problems, but this part mineral dissociates more because of sheet, therefore in reuse adoption process, generally walk with light mineral, therefore adopt spiral concentrator or this kind equipment of spiral chute, can be well with the mineral of fine size in the ore grinding, light mineral and sheet mineral concentrate in the product.
In general navajoite stone, mineral are mainly nonmetallic mineral, and silicate mineral is occupied an leading position, when adopting flotation, their floatability difference is very little, and the most high mineral of vanadium that contain are clay mineral, they have a large amount of secondary slimes primary and that produce through ore grinding, make flotation effect not good, if but through spiral concentrator or spiral chute the sludge that disturbs is selected away in advance, then flotation effect can obviously improve.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, provide a kind of and throw tail efficient height, cost is low, the metal loss amount is few, concentrate grade is high, sort the process for discarding tailings in mechanical beneficiation of the wide absorption-state vanadium ores of ore scope, so that enter the material V of chemical vanadium extraction operation
2O
5Content significantly improves.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores, it is characterized in that technical process is: with wet type rod milling after the absorption-state vanadium ores fragmentation to-200 purpose ore pulps, on spiral concentrator or spiral chute, sort, fine fraction mineral and light mineral are collected the back as the spiral concentrate, heavy mineral and coarse fraction mineral enter flotation cell as the spiral mine tailing and carry out flotation operation, flotation H
2SO
4Make pH and adjust agent, pH transfers to 4-6, dodecylamine hydrochloride is as collecting agent, consumption is a 100-500g/t spiral mine tailing, isooctanol is as foaming agent, and consumption 5-50g/t spiral mine tailing is through one to ten section flotation, come-up foam segment and spiral concentrate merge as total concentrate, and part is the total mine tailing that will abandon in the flotation cell groove.
Described H
2SO
4Molar concentration be 1-10mol/L.
Granularity is the 50-75% of total absorption-state vanadium ores quality for-200 purpose ore qualities in the ore pulp.
The present invention compared with prior art has the following advantages:
1. adopt the combined process flow of spiral concentrator or spiral chute and flotation, it is wide to sort the ore scope, strong to ore adaptability of different nature.
2. spiral concentrator or spiral chute floor space are little, and without power, production cost is very low, but good sorting result is arranged, and can fine solution ore directly enter flotation slurry to the interference that flotation brings, and have directly, advantage efficiently and cheaply.
3. adopt the combined process flow of spiral concentrator or spiral chute and flotation, can before entering chemical vanadium extraction, throw in advance tail, make the material V that enters chemical vanadium extraction operation
2O
5Content improves, and production cost significantly descends.
4. this flow process can be thrown the raw ore that the tail mass ratio is 30-60%, and loss rate of metal is 3-20%, but concentrate grade enrichment 40-100%.
Below by embodiment the present invention is described in further detail.
The specific embodiment
Embodiment 1
V in the raw ore
2O
5Content is 0.93% by mass percentage.The process for discarding tailings concrete steps are in advance:
1, fragmentation: absorption-state vanadium ores is crushed to-2mm.
2, ore grinding: general-2mm absorption-state vanadium ores adopts the wet type rod milling to-200 orders 65% fineness ore pulp.
3, spiral concentrator gravity treatment :-200 orders 65% fineness ore pulp is sorted at spiral concentrator, and through one roughing, chats selects once again, and as the spiral concentrate, this concentrate yield was 25.95%, V after light mineral and fine fraction mineral were collected
2O
5Mass content is 1.79%, the rate of recovery 50.14%, and heavy mineral and coarse fraction are collected rear as the spiral mine tailing.
4, flotation: the spiral mine tailing enters flotation cell as the flotation raw ore and carries out flotation operation, with the H of 5mol/L
2SO
4Make the pH adjusting agent, transfer pH to 4-6, dodecylamine hydrochloride is as collecting agent, and consumption is 500g/t flotation raw ore, and isooctanol is as foaming agent, and consumption is 50g/t flotation raw ore, and through ten sections flotation, the come-up foam is 27.08%, V as its concentrate to the productive rate of raw ore
2O
5Content 1.19%, the rate of recovery are 34.90%, and part is and always abandons mine tailing in the groove of flotation cell, and always abandoning mine tailing is 46.97% to the productive rate of raw ore, always abandons V in the mine tailing
2O
5Mass content be 0.30%, loss rate of metal is 14.96%.
Embodiment 2
V in the raw ore
2O
5Content is 0.96% by mass percentage.The process for discarding tailings concrete steps are in advance:
1, fragmentation: absorption-state vanadium ores is crushed to-2mm.
2, ore grinding: general-2mm absorption-state vanadium ores adopts the wet type rod milling to-200 orders 50% fineness ore pulp.
3, spiral chute gravity treatment :-200 orders 50% fineness ore pulp is sorted at spiral chute, and through one roughing, chats selects once again, and as the spiral concentrate, this concentrate yield was 39.64%, V after light mineral and fine fraction mineral were collected
2O
5Mass content is 1.69%, the rate of recovery 69.95%, and heavy mineral and coarse fraction are collected rear as the spiral mine tailing.
4, flotation: the spiral mine tailing enters flotation cell as the flotation raw ore and carries out flotation operation, with the H of 1mol/L
2SO
4Make the pH adjusting agent, transfer pH to 4-6, dodecylamine hydrochloride is as collecting agent, and consumption is 134g/t flotation raw ore, and isooctanol is as foaming agent, and consumption is 5g/t flotation raw ore, and through five sections flotation, the come-up foam is 8.45%, V as its concentrate to the productive rate of raw ore
2O
5Content 1.32%, the rate of recovery are 11.62%, and part is and always abandons mine tailing in the groove of flotation cell, and always abandoning mine tailing is 51.91% to the productive rate of raw ore, always abandons V in the mine tailing
2O
5Mass content be 0.34%, loss rate of metal is 18.43%.
Embodiment 3
V in the raw ore
2O
5Content is 1.85% by mass percentage.The process for discarding tailings concrete steps are in advance:
1, fragmentation: absorption-state vanadium ores is crushed to-2mm.
2, ore grinding: general-2mm absorption-state vanadium ores adopts the wet type rod milling to-200 orders 75% fineness ore pulp.
3, spiral concentrator gravity treatment :-200 orders 75% fineness ore pulp is sorted at spiral concentrator, and through one roughing, chats selects once again, and as the spiral concentrate, this concentrate yield was 49.90%, V after light mineral and fine fraction mineral were collected
2O
5Mass content is 3.01%, the rate of recovery 80.15%, and heavy mineral and coarse fraction are collected rear as the spiral mine tailing.
4, flotation: the spiral mine tailing enters flotation cell as the flotation raw ore and carries out flotation operation, with the H of 10mol/L
2SO
4Make the pH adjusting agent, transfer pH to 4-6, dodecylamine hydrochloride is as collecting agent, and consumption is 100g/t flotation raw ore, and isooctanol is as foaming agent, and consumption is 10g/t flotation raw ore, and through one section flotation, the come-up foam is 17.94%, V as its concentrate to the productive rate of raw ore
2O
5Content 1.59%, the rate of recovery are 15.22%, and part is and always abandons mine tailing in the groove of flotation cell, and always abandoning mine tailing is 32.16% to the productive rate of raw ore, always abandons V in the mine tailing
2O
5Mass content be 0.27%, loss rate of metal is 3.55%.
Claims (3)
1. the process for discarding tailings in mechanical beneficiation of an absorption-state vanadium ores, it is characterized in that technical process is: with wet type rod milling after the absorption-state vanadium ores fragmentation to-200 purpose ore pulps, on spiral concentrator or spiral chute, sort, fine fraction mineral and light mineral are collected the back as the spiral concentrate, heavy mineral and coarse fraction mineral enter flotation cell as the spiral mine tailing and carry out flotation operation, flotation H
2SO
4Make pH and adjust agent, pH transfers to 4-6, dodecylamine hydrochloride is as collecting agent, consumption is a 100-500g/t spiral mine tailing, isooctanol is as foaming agent, and consumption 5-50g/t spiral mine tailing is through one to ten section flotation, come-up foam segment and spiral concentrate merge as total concentrate, and part is the total mine tailing that will abandon in the flotation cell groove.
2. the process for discarding tailings in mechanical beneficiation of a kind of absorption-state vanadium ores according to claim 1 is characterized in that, described H
2SO
4Molar concentration be 1-10mol/L.
3. the process for discarding tailings in mechanical beneficiation of a kind of absorption-state vanadium ores according to claim 1 is characterized in that, granularity is the 50-75% of total absorption-state vanadium ores quality for-200 purpose navajoite stone quality in the ore pulp.
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| CN2009100234145A CN101618363B (en) | 2009-07-24 | 2009-07-24 | Process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores |
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| CN2009100234145A CN101618363B (en) | 2009-07-24 | 2009-07-24 | Process for discarding tailings in mechanical beneficiation of absorption-state vanadium ores |
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| CN101618363B true CN101618363B (en) | 2010-06-30 |
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| CN106000619B (en) * | 2016-05-20 | 2018-03-27 | 武汉科技大学 | A kind of method of the gravity treatment preenrichment vanadium from Rock coal containing alum |
| CN106391294A (en) * | 2016-09-29 | 2017-02-15 | 中国地质科学院矿产综合利用研究所 | Physical ore dressing method for siliceous clay vanadium ore |
| CN108126828B (en) * | 2017-12-18 | 2019-09-20 | 贵州省贵金属矿产资源综合利用工程技术研究中心有限公司 | A kind of Black Shale-type navajoite vanadium enrichment throws the beneficiation method of tail |
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Effective date of registration: 20210210 Address after: No.25 Xiying Road, Yanta District, Xi'an City, Shaanxi Province, 710054 Patentee after: XI'AN NORTHWEST INSTITUTE FOR NONFERROUS METAL RESEARCH Co.,Ltd. Address before: 710054 Shaanxi province Xi'an Xiying Road No. 25 Patentee before: NORTHWEST GEOLOGICAL INSTITUTE OF NONFERROUS METALS |