CN103182344A - Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore - Google Patents
Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore Download PDFInfo
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Abstract
The invention relates to an ore dressing combination process for processing a high-slime lead-zinc oxide and sulfide mixed ore. The ore dressing combination process comprises the steps as follows: crushing a raw ore and washing by a vibration sieve; carrying out primary classification on parts under the sieve and desliming fine particle fractions after primary classification through a two-stage one-closed-circuit process; combining parts over the sieve with rough particle fractions after primary classification, carrying out primary grinding, carrying out secondary classification on ground products, carrying out table-shaking gravity separation on rough particle fractions after secondary classification, and enabling fine particle fractions after secondary classification to enter a long conical cyclone for desliming; obtaining concentrate, namely lead concentrate by gravity separation, carrying out primary grinding on middlings obtained by gravity separation, combining tailings obtained by gravity separation with settled sand obtained by desliming in a short conical cyclone, carrying out ore grinding, and carrying out floatation separation to obtain lead sulfide concentrate, zinc sulfide concentrate and lead-zinc oxide bulk concentrate in sequence; and carrying out floatation separation on slime to obtain lead-zinc oxide and sulfide bulk concentrate. The ore dressing combination process is stable in operation, has very good technical indexes, and can bring very good economic benefits to enterprises.
Description
Technical field
The present invention relates to a kind of ore dressing group technology of handling the plumbous zinc oxygen of high mud sulphur mixing ore deposit.
Background technology
The general more complicated in plumbous zinc oxygen sulphur mixing ore deposit, existing lead oxide, zinc ore also have vulcanized lead, zinc ore.Easy pulverizing, the argillization crossed of this type of ore usually, wherein not only contains primary slime, and be easy to generate secondary slime in grinding process.Contain mud in the ore, especially the mud of high-load is very big to the flotation influence, and the one, in flotation operation, the particle of different specific areas is to the adhesion strength difference of bubble.Because thin mud has bigger specific area, in floatation process, be non-selectivity absorption, preferentially float with bubble incorporation, make coarse granule material pharmaceutical quantities not enough and be difficult to float.Fines partly cover large particle surface simultaneously, have changed the character of particle surface, have also influenced flotation effect; The 2nd, from the electrostatic principle analysis, thin dirt is dyed the purpose mineral surfaces and since the electric charge of small thin mud, gangue particle surface band electrically with quantity and purpose mineral surfaces with electric charge different, therefore thin mud covering phenomenon takes place.Thin mud covers phenomenon and does not occur over just on the coarse granule surface, also occur on the bubble surface simultaneously, its result has not only changed coarse grained surface nature, makes originally to reduce with regard to considerably less coarse granule mineral floatability, has also reduced the fresh worksheet area of bubble simultaneously.
This type of ore is generally taked stage grinding stage grading technology.Find that in production practices the stage grinding stage grading has improved crossing of mineral to a certain extent to be pulverized and the argillization phenomenon, but also has following point: (1) primary grinding can not make the good valuable mineral of crystallization dissociate fully, so influence concentrate grade; (2) secondary grinding is not selective to grade, and fine fraction part argillization in the secondary grinding process is more serious.
Therefore be necessary to develop a kind of better ore-dressing technique and handle the plumbous zinc oxygen of high mud sulphur mixing ore deposit.
Summary of the invention
The purpose of this invention is to provide a kind of ore dressing group technology of handling the plumbous zinc oxygen of high mud sulphur mixing ore deposit, utilize this technology can maximally utilise lead, zinc resource.
For achieving the above object, the present invention is by the following technical solutions:
A kind of ore dressing group technology of handling the plumbous zinc oxygen of high mud sulphur mixing ore deposit, it is to utilize washup-classification-desliming-gravity treatment-flotation combination process to handle the plumbous zinc mixing of high mud oxygen sulphur ore deposit; That is:
A. the vibratory sieve washup will be passed through after the raw ore fragmentation;
B. the lower part of screen of vibratory sieve washup divide to adopt spiral classifier to carry out scalping among the step a, and the fine fraction part after the scalping enters short awl cyclone and long awl cyclone successively and sloughs primary slime in the ore by two section one closed circuit flow process; Described two section one closed circuit flow process namely returned short flow process of boring cyclone again by short awl cyclone and long sand setting of boring cyclone combination desliming and long awl cyclone; The purpose that adopts two section one closed circuit flow process is to improve desliming efficient;
C. carry out primary grinding after the coarse fraction of spiral classifier among the sieve top of vibratory sieve washup among the step a and the step b partly being merged, the primary grinding product is carried out the secondary classification, the coarse fraction of secondary classification partly carries out table concentration, and the fine fraction of secondary classification partly enters described long awl cyclone and sloughs the secondary slime that the ore grinding process produces;
D. the concentrate that gravity treatment obtains among the step c is lead concentrate, and the chats that gravity treatment obtains carries out primary grinding again;
E. the ore deposit of regrinding after the sand setting of the mine tailing that gravity treatment obtains among the step c and described short awl cyclone merges, after carry out flotation, flotation divided for three steps, first step flotation is the vulcanized lead flotation, obtain concentrate of lead sulfide ore, second step was the zinc sulphide flotation, obtained zinc sulfide concentrates, the 3rd step was the flotation of lead oxide zinc, obtained the lead oxide zinc bulk concentrate; The sludge that desliming obtains among step b and the step c carries out the mud flotation separately, obtains lead oxide zinc and vulcanized lead zinc bulk concentrate.
Aforesaid ore dressing group technology, wherein, described high mud refers to that raw ore produces less than the primary slime of 74 μ m and behind ore grinding and accounts for mineral total amount 25-30wt% granularity less than the secondary slime of 38 μ m producing the granularity account for mineral total amount 10-30wt% after the fragmentation;
In the described plumbous zinc oxygen sulphur mixing ore deposit, lead ore is lead oxide mineral and/or vulcanized lead mineral; Zinc ore is zinc oxide mineral and/or zinc sulfide mineral; And the plumbous zinc content in the lead-zinc thing accounts for the 10-50wt% of total plumbous zinc content.
Aforesaid ore dressing group technology, wherein preferably, described lead oxide mineral are cerussite, and described vulcanized lead mineral are galena, and described zinc oxide mineral are smithsonite, and described zinc sulfide mineral is zincblende and/or marmatite.
Aforesaid ore dressing group technology, wherein preferably, among the step a, described fragmentation is that raw ore is crushed to granularity less than 12mm.
Aforesaid ore dressing group technology, wherein preferably, among the step b, the sieve aperture of the screen cloth of described vibratory sieve washup is 4mm; The partition size of described scalping is 250 μ m; The partition size of described short awl cyclone is 100 μ m, and the partition size of described long awl cyclone is 38 μ m.
Aforesaid ore dressing group technology, wherein preferably, among the step c, described primary grinding is that mineral are milled to the granularity of the ore that accounts for mineral total amount 50-80wt% less than 74 μ m (μ m 50-80wt% namely-74); The partition size of described secondary classification is 74 μ m.
Aforesaid ore dressing group technology, wherein preferably, among the step e, described ore grinding again is that mineral are milled to the granularity of the ore that accounts for mineral total amount 70-90wt% less than 74 μ m.
Aforesaid ore dressing group technology, wherein preferably, among the step e, to be cupral, ammonium dibutyl dithiophosphate, sodium ethylxanthate or two kinds of medicaments that will be wherein be used with 1: 1 weight ratio described vulcanized lead flotation institute with medicament, the total consumption of medicament is 50-100g/t, and flotation time is 8-10 minute.
Aforesaid ore dressing group technology, wherein preferably, among the step e, adopt copper sulphate for activation before the described zinc sulphide flotation, the copper sulphate consumption is 200-500g/t, uses the sodium n-butyl-xanthate collecting again, the sodium n-butyl-xanthate consumption is 50-100g/t, and flotation time is 8-10 minute.
Aforesaid ore dressing group technology, wherein preferably, among the step e, earlier with the vulcanized sodium sulfuration, amount of sodium sulfide is 500-1000g/t before the flotation of described lead oxide zinc, use copper sulphate for activation again, the copper sulphate consumption is 200-500g/t, uses sodium n-butyl-xanthate+fatty amine collecting then, and the sodium n-butyl-xanthate consumption is 50-100g/t, the fatty amine consumption is 80-120g/t, and flotation time is 16-20 minute.
Aforesaid ore dressing group technology, wherein preferably, among the step e, earlier with the vulcanized sodium sulfuration, amount of sodium sulfide is 200-300g/t before the described mud flotation; Use copper sulphate for activation again, the copper sulphate consumption is 100-200g/t; Use sodium n-butyl-xanthate+fatty amine collecting then, the sodium n-butyl-xanthate consumption is 20-30g/t, and the fatty amine consumption is 40-50g/t, and flotation time is 4-6 minute.
Beneficial effect of the present invention is: utilize this technological operation stable, obtain higher technical indicator, can be enterprise and bring good economic benefits.
Description of drawings
Fig. 1 is the ore dressing group technology schematic flow sheet in the plumbous zinc oxygen of the high mud of processing provided by the invention sulphur mixing ore deposit.
Fig. 2 is the schematic flow sheet of processing ore technology of the prior art.
The specific embodiment
Embodiment 1
Select the plumbous zinc oxygen of the high mud of Yunnan Huize sulphur hybrid metal ore deposit in the present embodiment for use, ore is the ore based on valuable mineral galena, cerussite, zincblende and smithsonite.Plumbous in lead oxide, the zinc mineral, zinc content accounts for 25wt% and the 30wt% of the total lead of mineral, zinc content respectively, except these valuable minerals that beneficial element constitutes, also have a large amount of gangue mineral dolomites, calcite, clay mineral and a small amount of quartzy in the ore.Lead content is 4.5wt% in the ore, zinc 4.8wt%.
Utilize the inventive method, being about to raw ore is the vibratory sieve washup of 4mm with sieve aperture earlier, it is that the spiral classifier of 250 μ m carries out scalping that partition size divide to be adopted in the lower part of screen, and the fine fraction part is that the short awl cyclone of 100 μ m and long awl cyclone that partition size is 38 μ m carry out two section one closed circuit desliming through partition size; Sieve top after the vibratory sieve washup and the coarse fraction of spiral classifier partly merge and carry out primary grinding, grinding particle size is-74 μ m 80wt%, the primary grinding product carries out the secondary classification, the secondary partition size is 74 μ m, the coarse fraction of secondary classification partly carries out table concentration, and the fine fraction of secondary classification is partly incorporated the desliming of aforementioned long awl cyclone into.Gravity concentrate is lead concentrate, the gravity treatment chats returns the higher level and carries out primary grinding again, and the sand setting of gravity tailings and short awl cyclone merges through the laggard capable flotation of ore grinding again, and vulcanized lead flotation institute with medicament is cupral, the total consumption of medicament is 80g/t, and flotation time is 8 minutes; Adopt copper sulphate for activation before the zinc sulphide flotation, the copper sulphate consumption is 300g/t, uses the sodium n-butyl-xanthate collecting again, and the sodium n-butyl-xanthate consumption is 80g/t, and flotation time is 8 minutes; Earlier with the vulcanized sodium activation, amount of sodium sulfide is 600g/t, uses copper sulphate for activation again before the flotation of lead oxide zinc, consumption is 300g/t, uses sodium n-butyl-xanthate and fatty amine collecting then, and the consumption of sodium n-butyl-xanthate is 80g/t, the fatty amine consumption is 100g/t, and flotation time is 16 minutes.Sort successively and obtain concentrate of lead sulfide ore, zinc sulfide concentrates, lead oxide zinc bulk concentrate.The mud that desliming obtains also carries out the mud flotation separately, namely vulcanize with vulcanized sodium, consumption is 200g/t, use copper sulphate for activation again, consumption is 150g/t, add the 20g/t sodium n-butyl-xanthate then and the 40g/t fatty amine carries out collecting, obtain lead oxide zinc and vulcanized lead zinc bulk concentrate (calling mud flotation of lead zinc bulk concentrate in the following text).Whole process flow is referring to Fig. 1, and experimental result is referring to table 1.
As a comparison, adopt traditional handicraft as shown in Figure 2 to handle, mog is-74 μ m80wt%, and experimental result is also referring to table 1.
Table 1
Embodiment 2
The plumbous zinc oxygen of the high mud of Yunnan Huize sulphur hybrid metal ore deposit, ore is the ore based on valuable mineral galena, cerussite, zincblende, marmatite and smithsonite.Plumbous in lead oxide, the zinc mineral, zinc content accounts for 28wt% and the 30wt% of the total lead of mineral, zinc content respectively, except these valuable minerals that beneficial element constitutes, also have a large amount of gangue mineral dolomites, calcite, clay mineral and a small amount of quartzy in the ore.Lead content is 4.8wt% in the ore, zinc 5.3wt%.
Utilize the inventive method, being about to raw ore is the vibratory sieve washup of 4mm with sieve aperture earlier, the lower part of screen divide to adopt the spiral classifier of partition size 250 μ m to carry out scalping, and the fine fraction part is that the short awl cyclone of 100 μ m and long awl cyclone that partition size is 38 μ m carry out two section one closed circuit desliming through partition size; Sieve top after the vibratory sieve washup and the coarse fraction of spiral classifier partly merge and carry out primary grinding, grinding particle size is-74 μ m 80%, the primary grinding product carries out the secondary classification, the secondary partition size is 74 μ m, the coarse fraction of secondary classification partly carries out table concentration, and the fine fraction of secondary classification partly enters the desliming of long awl cyclone.Gravity concentrate is lead concentrate, the gravity treatment chats returns the higher level and carries out primary grinding again, and the sand setting of gravity tailings and short awl cyclone merges through the laggard capable flotation of ore grinding again, and vulcanized lead flotation institute with medicament is cupral, the total consumption of medicament is 100g/t, and flotation time is 8 minutes; Adopt copper sulphate for activation before the zinc sulphide flotation, the copper sulphate consumption is 500g/t, uses the sodium n-butyl-xanthate collecting again, and the sodium n-butyl-xanthate consumption is 100g/t, and flotation time is 10 minutes; Earlier with the vulcanized sodium activation, amount of sodium sulfide is 800g/t, uses copper sulphate for activation again before the flotation of lead oxide zinc, consumption is 400g/t, uses sodium n-butyl-xanthate and fatty amine collecting then, and the consumption of sodium n-butyl-xanthate is 100g/t, the fatty amine consumption is 120g/t, and flotation time is 20 minutes.Sort successively and obtain concentrate of lead sulfide ore, zinc sulfide concentrates, lead oxide zinc bulk concentrate.The mud that desliming obtains also carries out the mud flotation separately, and namely with vulcanized sodium sulfuration, consumption is 200g/t, uses copper sulphate for activation again, and consumption is 150g/t, adds the 20g/t sodium n-butyl-xanthate then and the 40g/t fatty amine carries out collecting, obtains mud flotation of lead zinc bulk concentrate.Whole process flow is referring to Fig. 1, and experimental result is referring to table 2.
As a comparison, adopt traditional handicraft as shown in Figure 2 to handle, mog is-74 μ m 80wt%, and experimental result is also referring to table 2.
Table 2
From table 1 and table 2 as can be known, in embodiment 1 and embodiment 2, utilize technology provided by the invention can obtain high-quality vulcanized lead, zinc sulfide concentrates and meet lead oxide zinc bulk concentrate and the inferior lead and zinc bulk concentrate (mud flotation of lead zinc bulk concentrate) of smelting requirements, the resulting lead concentrate of gravity treatment is high-quality concentrate.Adopt this technology higher to lead, zinc recovery.Correspondingly, adopt traditional handicraft, the vulcanized lead that obtains, zinc concentrate quality are low, and lead in the lead oxide zinc bulk concentrate that obtains+zinc grade is obviously low, and the rate of recovery is also low.
From the above analysis, utilize washup-classification provided by the invention-desliming-gravity treatment-flotation combination process to handle the plumbous zinc oxygen of high mud sulphur mixing ore deposit and have tangible beneficial effect.
Claims (10)
1. ore dressing group technology of handling the plumbous zinc oxygen of high mud sulphur mixing ore deposit is characterized in that its step is as follows:
A. the vibratory sieve washup will be passed through after the raw ore fragmentation;
B. the lower part of screen of vibratory sieve washup divides the employing spiral classifier to carry out scalping among the step a, fine fraction after scalping part enters short awl cyclone and long awl cyclone successively, and the flow process that the sand setting by short awl cyclone and the combination desliming of long awl cyclone and long awl cyclone returns short awl cyclone is again sloughed the primary slime in the ore;
C. carry out primary grinding after the coarse fraction of spiral classifier among the sieve top of vibratory sieve washup among the step a and the step b partly being merged, the primary grinding product is carried out the secondary classification, the coarse fraction of secondary classification partly carries out table concentration, and the fine fraction of secondary classification partly enters described long awl cyclone and sloughs the secondary slime that the ore grinding process produces;
D. the concentrate that gravity treatment obtains among the step c is lead concentrate, and the chats that gravity treatment obtains carries out primary grinding again;
E. the ore deposit of regrinding after the sand setting of the mine tailing that gravity treatment obtains among the step c and described short awl cyclone merges, after carry out flotation, flotation divided for three steps, first step flotation is the vulcanized lead flotation, obtain concentrate of lead sulfide ore, second step was the zinc sulphide flotation, obtained zinc sulfide concentrates, the 3rd step was the flotation of lead oxide zinc, obtained the lead oxide zinc bulk concentrate; The sludge that desliming obtains among step b and the step c carries out the mud flotation separately, obtains lead oxide zinc and vulcanized lead zinc bulk concentrate.
2. ore dressing group technology according to claim 1, it is characterized in that described high mud refers to that raw ore produces less than the primary slime of 74 μ m and behind ore grinding and accounts for mineral total amount 25-30wt% granularity less than the secondary slime of 38 μ m producing the granularity account for mineral total amount 10-30wt% after the fragmentation;
In the described plumbous zinc oxygen sulphur mixing ore deposit, lead ore is lead oxide mineral and/or vulcanized lead mineral; Zinc ore is zinc oxide mineral and/or zinc sulfide mineral; And the plumbous zinc content in the lead-zinc thing accounts for the 10-50wt% of total plumbous zinc content.
3. ore dressing group technology according to claim 2 is characterized in that, described lead oxide mineral are cerussite, and described vulcanized lead mineral are galena, and described zinc oxide mineral are smithsonite, and described zinc sulfide mineral is zincblende and/or marmatite.
4. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step a, described fragmentation is that raw ore is crushed to granularity less than 12mm;
Among the step b, the sieve aperture of the screen cloth of described vibratory sieve washup is 4mm; The partition size of described scalping is 250 μ m; The partition size of described short awl cyclone is 100 μ m, and the partition size of described long awl cyclone is 38 μ m.
5. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step c, described primary grinding is that mineral are milled to the granularity of the ore that accounts for mineral total amount 50-70wt% less than 74 μ m; The partition size of described secondary classification is 74 μ m.
6. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step e, described ore grinding again is that mineral are milled to the granularity of the ore that accounts for mineral total amount 70-90wt% less than 74 μ m.
7. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step e, to be cupral, ammonium dibutyl dithiophosphate, sodium ethylxanthate or two kinds of medicaments that will be wherein be used with 1: 1 weight ratio described vulcanized lead flotation institute with medicament, the total consumption of medicament is 50-100g/t, and flotation time is 8-10 minute.
8. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step e, adopt copper sulphate for activation before the described zinc sulphide flotation, the copper sulphate consumption is 200-500g/t, uses the sodium n-butyl-xanthate collecting again, and the sodium n-butyl-xanthate consumption is 50-100g/t, and flotation time is 8-10 minute.
9. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step e, vulcanize with vulcanized sodium earlier before the flotation of described lead oxide zinc, amount of sodium sulfide is 500-1000g/t, use copper sulphate for activation again, the copper sulphate consumption is 200-500g/t, uses sodium n-butyl-xanthate+fatty amine collecting then, and the sodium n-butyl-xanthate consumption is 50-100g/t, the fatty amine consumption is 80-120g/t, and flotation time is 16-20 minute.
10. according to any described ore dressing group technology in the claim 1 to 3, it is characterized in that,
Among the step e, earlier with the vulcanized sodium sulfuration, amount of sodium sulfide is 200-300g/t before the described mud flotation; Use copper sulphate for activation again, the copper sulphate consumption is 100-200g/t; Use sodium n-butyl-xanthate+fatty amine collecting then, the sodium n-butyl-xanthate consumption is 20-30g/t, and the fatty amine consumption is 40-50g/t, and flotation time is 4-6 minute.
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| CN112916197A (en) * | 2021-01-28 | 2021-06-08 | 内蒙古金陶股份有限公司 | Pretreatment method before ore processing |
| CN112958271A (en) * | 2021-02-25 | 2021-06-15 | 广东省科学院资源综合利用研究所 | Separation flotation method for dolomite-barite type lead-zinc ore |
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