CN103182344B - 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 processing the plumbous zinc oxysulphied of high mud ore deposit.
Background technology
The general more complicated in plumbous zinc oxysulphied ore deposit, existing oxidation lead and zinc ores, vulcanizes lead and zinc ores in addition.Easy pulverizing, the argillization crossed of this type of ore, usually, wherein not only contains primary slime, and easily produce secondary slime in grinding process.Mud containing mud, especially high-load in ore is very large to influence of flotation, and the one, in flotation operation, the particle of different specific areas is different to the adhesion strength of bubble.Because thin mud has larger 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 affected flotation effect; The 2nd, from electrostatic principle analysis, thin sludge-polluted object mineral surfaces, due to the electric charge of small thin mud, gangue particle surface band electrically with quantity and object mineral surfaces with electric charge different, therefore there is thin mud covering phenomenon.Thin mud covers phenomenon and does not occur over just on coarse granule surface, also occur on bubble surface simultaneously, its result has not only changed coarse grained surface nature, makes originally with regard to considerably less coarse granule mineral floatability, to reduce, and has also reduced the fresh worksheet area of bubble simultaneously.
This type of ore is generally taked stage grinding stage grading technique.In production practices, find, stage grinding stage grading has improved crossing of mineral to a certain extent to be pulverized and argillization phenomenon, but also has following point: (1) primary grinding can not make the good valuable mineral of crystallization dissociate completely, so affect concentrate grade; (2) secondary grinding is not selective to grade, and fine fraction part argillization in secondary grinding process is more serious.
Therefore be necessary to develop a kind of better ore-dressing technique and process the plumbous zinc oxysulphied of high mud ore deposit.
Summary of the invention
The object of this invention is to provide a kind of ore dressing group technology of processing the plumbous zinc oxysulphied of high mud ore deposit, utilize this technique can maximally utilise lead, zinc resource.
For achieving the above object, the present invention is by the following technical solutions:
Process the ore dressing group technology in the plumbous zinc oxysulphied of high mud ore deposit, it is to utilize washup-classification-desliming-gravity treatment-flotation combination process to process the plumbous zinc mixing of high mud oxygen sulphur ore deposit; That is:
A. raw ore fragmentation is passed through to vibratory sieve washup afterwards;
B. in step a, the lower part of screen of vibratory sieve washup divides employing spiral classifier to carry out scalping, and the fine fraction part after scalping enters successively short cone cyclone and long cone cyclone is sloughed the primary slime in ore by two section of one closed circuit flow process; Described two section of one closed circuit flow process, returns to the flow process of short cone cyclone again by the sand setting of short cone cyclone and the combination desliming of long cone cyclone and long cone cyclone; The object that adopts two section of one closed circuit flow process is to improve desliming efficiency;
C. after the coarse fraction of spiral classifier in part and step b on the sieve of vibratory sieve washup in step a partly being merged, carry out primary grinding, primary grinding product is carried out to secondary grading, the coarse fraction of secondary grading partly carries out table concentration, and the fine fraction of secondary grading partly enters described long cone cyclone and sloughs the secondary slime that ore grinding process produces;
D. the concentrate that in step c, gravity treatment obtains is lead concentrate, and the chats that gravity treatment obtains re-starts primary grinding;
E. the mine tailing that in step c, gravity treatment obtains and the sand setting of the described short cone cyclone ore deposit of regrinding after merging, after carry out flotation, flotation divides three steps, first step flotation is vulcanized lead flotation, obtain concentrate of lead sulfide ore, second step is zinc sulphide flotation, obtains zinc sulfide concentrates, the 3rd step is the flotation of lead oxide zinc, obtains lead oxide zinc bulk concentrate; The sludge that in step b and step c, desliming obtains carries out separately mud flotation, obtains lead oxide zinc and vulcanized lead zinc bulk concentrate.
Ore dressing group technology as above, wherein, described high mud refers to that raw ore produces afterwards in fragmentation the granularity that accounts for mineral total amount 10-30wt% and is less than the primary slime of 74 μ m and produces and account for the secondary slime that mineral total amount 25-30wt% granularity is less than 38 μ m after ore grinding;
In described plumbous zinc oxysulphied 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 Pb, Zn content in lead-zinc thing accounts for the 10-50wt% of total Pb, Zn content.
Ore dressing group technology as above, 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.
Ore dressing group technology as above, wherein preferably, in step a, described fragmentation is raw ore to be crushed to granularity be less than 12mm.
Ore dressing group technology as above, wherein preferably, in 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 cone cyclone is 100 μ m, and the partition size of described long cone cyclone is 38 μ m.
Ore dressing group technology as above, wherein preferably, in step c, described primary grinding is that the granularity that mineral are milled to the ore that accounts for mineral total amount 50-80wt% is less than 74 μ m (-74 μ m 50-80wt%); The partition size of described secondary grading is 74 μ m.
Ore dressing group technology as above, wherein preferably, in step e, described ore grinding is again that the granularity that mineral are milled to the ore that accounts for mineral total amount 70-90wt% is less than 74 μ m.
Ore dressing group technology as above, wherein preferably, in step e, described vulcanized lead flotation institute with medicament is cupral, ammonium dibutyl dithiophosphate, sodium ethylxanthate or the weight ratio with 1: 1 is used in conjunction with by two kinds of medicaments wherein, the total consumption of medicament is 50-100g/t, and flotation time is 8-10 minute.
Ore dressing group technology as above, wherein preferably, in step e, before described zinc sulphide flotation, adopt copper sulphate for activation, copper sulphate consumption is 200-500g/t, then uses sodium n-butyl-xanthate collecting, sodium n-butyl-xanthate consumption is 50-100g/t, and flotation time is 8-10 minute.
Ore dressing group technology as above, wherein preferably, in step e, before the flotation of described lead oxide zinc, first with vulcanized sodium sulfuration, amount of sodium sulfide is 500-1000g/t, use again copper sulphate for activation, copper sulphate consumption is 200-500g/t, then uses the collecting of sodium n-butyl-xanthate+fatty amine, and sodium n-butyl-xanthate consumption is 50-100g/t, fatty amine consumption is 80-120g/t, and flotation time is 16-20 minute.
Ore dressing group technology as above, wherein preferably, in step e, before described mud flotation, first with vulcanized sodium sulfuration, amount of sodium sulfide is 200-300g/t; Use copper sulphate for activation, copper sulphate consumption is 100-200g/t again; Then use the collecting of sodium n-butyl-xanthate+fatty amine, sodium n-butyl-xanthate consumption is 20-30g/t, and 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 benefit.
Accompanying drawing explanation
Fig. 1 is the ore dressing group technology schematic flow sheet in the plumbous zinc oxysulphied of the high mud of processing provided by the invention ore deposit.
Fig. 2 is the schematic flow sheet of processing ore technology of the prior art.
The specific embodiment
Embodiment 1
In the present embodiment, select the plumbous zinc oxysulphied of the high mud of Huize, yunnan metallic ore, ore is to take valuable mineral galena, cerussite, zincblende and smithsonite as main ore.In lead oxide, zinc mineral, content of Pb&Zn accounts for respectively 25wt% and the 30wt% of the total content of Pb&Zn of mineral, except these valuable minerals that beneficial element forms, in ore, also have a large amount of gangue mineral dolomites, calcite, clay mineral and quartzy on a small quantity.In ore, lead content is 4.5wt%, zinc 4.8wt%.
Utilize the inventive method, the vibratory sieve washup that soon raw ore is first 4mm with sieve aperture, lower part of screen divides that to adopt partition size be that the spiral classifier of 250 μ m carries out scalping, and fine fraction part is that the short cone cyclone of 100 μ m and long cone cyclone that partition size is 38 μ m carry out two section of one closed circuit desliming through partition size; On sieve after vibratory sieve washup, part and the coarse fraction of spiral classifier partly merge and carry out primary grinding, grinding particle size is-74 μ m 80wt%, primary grinding product carries out secondary grading, secondary grading granularity is 74 μ m, the coarse fraction of secondary grading partly carries out table concentration, and the fine fraction of secondary grading is partly incorporated to the desliming of aforementioned long cone cyclone.Gravity concentrate is lead concentrate, gravity treatment chats returns to higher level and re-starts primary grinding, and the sand setting of gravity tailings and short cone cyclone merges through the laggard row 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 zinc sulphide flotation, copper sulphate consumption is 300g/t, then to use sodium n-butyl-xanthate collecting, sodium n-butyl-xanthate consumption be 80g/t, and flotation time is 8 minutes; Before the flotation of lead oxide zinc, first with vulcanized sodium activation, amount of sodium sulfide is 600g/t, then uses copper sulphate for activation, consumption is 300g/t, then uses sodium n-butyl-xanthate and fatty amine collecting, and the consumption of sodium n-butyl-xanthate is 80g/t, 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 separately mud flotation, with vulcanized sodium, vulcanize, consumption is 200g/t, use again copper sulphate for activation, consumption is 150g/t, then add 20g/t sodium n-butyl-xanthate and 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 technological process 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 process, mog is-74 μ m80wt%, and experimental result is also referring to table 1.
Table 1
Embodiment 2
The plumbous zinc oxysulphied of the high mud of Huize, yunnan metallic ore, ore is to take valuable mineral galena, cerussite, zincblende, marmatite and smithsonite as main ore.In lead oxide, zinc mineral, content of Pb&Zn accounts for respectively 28wt% and the 30wt% of the total content of Pb&Zn of mineral, except these valuable minerals that beneficial element forms, in ore, also have a large amount of gangue mineral dolomites, calcite, clay mineral and quartzy on a small quantity.In ore, lead content is 4.8wt%, zinc 5.3wt%.
Utilize the inventive method, the vibratory sieve washup that soon raw ore is first 4mm with sieve aperture, lower part of screen is divided and is adopted the spiral classifier of partition size 250 μ m to carry out scalping, and fine fraction part is that the short cone cyclone of 100 μ m and long cone cyclone that partition size is 38 μ m carry out two section of one closed circuit desliming through partition size; On sieve after vibratory sieve washup, part and the coarse fraction of spiral classifier partly merge and carry out primary grinding, grinding particle size is-74 μ m 80%, primary grinding product carries out secondary grading, secondary grading granularity is 74 μ m, the coarse fraction of secondary grading partly carries out table concentration, and the fine fraction of secondary grading partly enters the desliming of long cone cyclone.Gravity concentrate is lead concentrate, gravity treatment chats returns to higher level and re-starts primary grinding, and the sand setting of gravity tailings and short cone cyclone merges through the laggard row 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 zinc sulphide flotation, copper sulphate consumption is 500g/t, then to use sodium n-butyl-xanthate collecting, sodium n-butyl-xanthate consumption be 100g/t, and flotation time is 10 minutes; Before the flotation of lead oxide zinc, first with vulcanized sodium activation, amount of sodium sulfide is 800g/t, then uses copper sulphate for activation, consumption is 400g/t, then uses sodium n-butyl-xanthate and fatty amine collecting, and the consumption of sodium n-butyl-xanthate is 100g/t, 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 separately mud flotation, and, with vulcanized sodium sulfuration, consumption is 200g/t, then uses copper sulphate for activation, and consumption is 150g/t, then adds 20g/t sodium n-butyl-xanthate and 40g/t fatty amine carries out collecting, obtains mud flotation of lead zinc bulk concentrate.Whole technological process 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 process, mog is-74 μ m 80wt%, and experimental result is also referring to table 2.
Table 2
From table 1 and table 2, in embodiment 1 and embodiment 2, utilize technique 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 technique higher to lead, zinc recovery.Correspondingly, adopt traditional handicraft, the vulcanized lead obtaining, zinc concentrate quality are low, and in the lead oxide zinc bulk concentrate obtaining, lead+zinc grade is obviously low, and the rate of recovery is also low.
From the above analysis, utilize washup-classification-desliming-gravity treatment provided by the invention-flotation combination process to process the plumbous zinc oxysulphied of high mud ore deposit and there is obvious beneficial effect.
Claims (10)
1. an ore dressing group technology of processing the plumbous zinc oxysulphied of high mud ore deposit, is characterized in that, its step is as follows:
A. raw ore fragmentation is passed through to vibratory sieve washup afterwards;
B. in step a, the lower part of screen of vibratory sieve washup divides employing spiral classifier to carry out scalping, fine fraction part after scalping enters short cone cyclone and length cone cyclone successively, by short cone cyclone and the flow process that long cone cyclone combines desliming and long sand setting of boring cyclone returns to short cone cyclone again, sloughs the primary slime in ore;
C. after the coarse fraction of spiral classifier in part and step b on the sieve of vibratory sieve washup in step a partly being merged, carry out primary grinding, primary grinding product is carried out to secondary grading, the coarse fraction of secondary grading partly carries out table concentration, and the fine fraction of secondary grading partly enters described long cone cyclone and sloughs the secondary slime that ore grinding process produces;
D. the concentrate that in step c, gravity treatment obtains is lead concentrate, and the chats that gravity treatment obtains re-starts primary grinding;
E. the mine tailing that in step c, gravity treatment obtains and the sand setting of the described short cone cyclone ore deposit of regrinding after merging, after carry out flotation, flotation divides three steps, first step flotation is vulcanized lead flotation, obtain concentrate of lead sulfide ore, second step is zinc sulphide flotation, obtains zinc sulfide concentrates, the 3rd step is the flotation of lead oxide zinc, obtains lead oxide zinc bulk concentrate; The sludge that in step b and step c, desliming obtains carries out separately mud flotation, 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 afterwards in fragmentation the granularity that accounts for mineral total amount 10-30wt% and is less than the primary slime of 74 μ m and produces and account for the secondary slime that mineral total amount 25-30wt% granularity is less than 38 μ m after ore grinding;
In described plumbous zinc oxysulphied ore deposit, lead ore is lead oxide mineral and vulcanized lead mineral; Zinc ore is zinc oxide mineral and zinc sulfide mineral; And the Pb, Zn content in lead-zinc thing accounts for the 10-50wt% of total Pb, Zn 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 the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step a, described fragmentation is raw ore to be crushed to granularity be less than 12mm;
In 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 cone cyclone is 100 μ m, and the partition size of described long cone cyclone is 38 μ m.
5. according to the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step c, described primary grinding is that the granularity that mineral are milled to the ore that accounts for mineral total amount 50-70wt% is less than 74 μ m; The partition size of described secondary grading is 74 μ m.
6. according to the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step e, described ore grinding is again that the granularity that mineral are milled to the ore that accounts for mineral total amount 70-90wt% is less than 74 μ m.
7. according to the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step e, described vulcanized lead flotation institute with medicament is cupral, ammonium dibutyl dithiophosphate, sodium ethylxanthate or the weight ratio with 1:1 is used in conjunction with by two kinds of medicaments wherein, the total consumption of medicament is 50-100g/t, and flotation time is 8-10 minute.
8. according to the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step e, adopt copper sulphate for activation before described zinc sulphide flotation, copper sulphate consumption is 200-500g/t, then to use sodium n-butyl-xanthate collecting, sodium n-butyl-xanthate consumption be 50-100g/t, and flotation time is 8-10 minute.
9. according to the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step e, before the flotation of described lead oxide zinc, first with vulcanized sodium, vulcanize, amount of sodium sulfide is 500-1000g/t, use again copper sulphate for activation, copper sulphate consumption is 200-500g/t, then uses the collecting of sodium n-butyl-xanthate+fatty amine, and sodium n-butyl-xanthate consumption is 50-100g/t, fatty amine consumption is 80-120g/t, and flotation time is 16-20 minute.
10. according to the ore dressing group technology described in any one in claims 1 to 3, it is characterized in that,
In step e, before described mud flotation, first with vulcanized sodium sulfuration, amount of sodium sulfide is 200-300g/t; Use copper sulphate for activation, copper sulphate consumption is 100-200g/t again; Then use the collecting of sodium n-butyl-xanthate+fatty amine, sodium n-butyl-xanthate consumption is 20-30g/t, and fatty amine consumption is 40-50g/t, and flotation time is 4-6 minute.
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