CN102489386A - Method for separating fine cassiterite - Google Patents
Method for separating fine cassiterite Download PDFInfo
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- CN102489386A CN102489386A CN2011104179888A CN201110417988A CN102489386A CN 102489386 A CN102489386 A CN 102489386A CN 2011104179888 A CN2011104179888 A CN 2011104179888A CN 201110417988 A CN201110417988 A CN 201110417988A CN 102489386 A CN102489386 A CN 102489386A
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005188 flotation Methods 0.000 claims abstract description 114
- 239000012141 concentrate Substances 0.000 claims abstract description 108
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000005484 gravity Effects 0.000 claims abstract description 21
- 239000004576 sand Substances 0.000 claims abstract description 11
- 238000007885 magnetic separation Methods 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000004088 foaming agent Substances 0.000 claims description 15
- 239000010419 fine particle Substances 0.000 claims description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- 239000002516 radical scavenger Substances 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000012991 xanthate Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- 240000000203 Salix gracilistyla Species 0.000 claims description 4
- YVURAEQQLUQPFO-UHFFFAOYSA-N phosphoric acid;styrene Chemical group OP(O)(O)=O.C=CC1=CC=CC=C1 YVURAEQQLUQPFO-UHFFFAOYSA-N 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 24
- 239000002245 particle Substances 0.000 abstract 3
- 239000008396 flotation agent Substances 0.000 abstract 1
- 238000004537 pulping Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 28
- 238000007667 floating Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 229910001608 iron mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000021321 essential mineral Nutrition 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005456 ore beneficiation Methods 0.000 description 1
- 229910052611 pyroxene Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
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Abstract
一种微细粒锡石的选矿方法，其特征在于由以下步骤组成：原矿石磨矿，调浆，进行硫化矿浮选；浮选硫化矿尾矿进行磁选，磁选尾矿分级为+0.043mm和-0.043mm两个粒级；+0.043mm粒级进行螺旋溜槽重选，摇床重选，获得摇床锡石精矿；-0.043mm粒级进行旋流器脱泥，获得旋流器沉砂；旋流器沉砂调浆进行一次浮选粗选、一次浮选扫选和一次浮选精选，获得浮选粗精矿；浮选粗精矿进行离心选矿机重选，获得离心重选锡石精矿，摇床锡石精矿和离心重选锡石精矿合并为总锡石精矿。本发明采用螺旋溜槽进行粗选，大大提高了单位面积的处理能力，节省了占地面积，分选效率高；采用浮选粗选和重选精选相结合，浮选药剂耗量少、成本低，选矿富集比达到5～10，锡石回收率高。
A method for beneficiation of fine-grained cassiterite, which is characterized in that it consists of the following steps: raw ore grinding, slurry adjustment, and sulfide ore flotation; flotation sulfide ore tailings are subjected to magnetic separation, and the magnetic separation tailings are classified as +0.043 mm and -0.043mm two particle grades; +0.043mm particle size is subjected to spiral chute re-election and shaker re-election to obtain shaker cassiterite concentrate; -0.043mm particle size is deslimed by cyclone to obtain cyclone Sand settling; cyclone settling and pulping for a flotation roughing, a flotation sweep and a flotation concentration to obtain a flotation coarse concentrate; the flotation coarse concentrate is re-selected by a centrifugal concentrator to obtain a centrifugal Gravity-selected cassiterite concentrate, shaking table cassiterite concentrate and centrifugal gravity-selected cassiterite concentrate are combined into total cassiterite concentrate. The present invention uses a spiral chute for rough selection, which greatly improves the processing capacity per unit area, saves the occupied area, and has high sorting efficiency; adopts the combination of flotation rough selection and gravity selection, and the consumption of flotation agents is small and the cost is low. Low, the beneficiation enrichment ratio reaches 5-10, and the recovery rate of cassiterite is high.
Description
Technical field
The present invention relates to a kind of beneficiation method, particularly a kind of beneficiation method of micro fine particle.
Background technology
Cassiterite is because the crisp specific physical character such as frangible of its property, and argillization or cross and pulverize very easily in muck, grinding process produces a large amount of secondary slimes.The fine cassiterite of disseminated grain size particularly, itself and sulphide ore or the fine and close symbiosis of iron mineral are perhaps wrapped up by gangue mineral.Dissociate if realize the effective monomer of cassiterite mineral, need the ore fine grinding so, can be produced secondary slime inevitably, so micro fine particle has the characteristics of difficult choosing.The tin about 80% of the annual loss of China at present is that the form with thin mud exists and is lost in the mine tailing.
The tin ore beneficiation method is mainly two kinds of gravity separation method and floatations.Because cassiterite is bigger with the density variation of gangue mineral than great, thereby gravity treatment is the main method that cassiterite reclaims always.Gravity treatment since low, the non-environmental-pollution of its processing cost, concentration ratio high, can obtain generally to be adopted than advantage such as the tin concentrate of high-grade.Using in the gravitational separation equipment is shaking table the most widely, and they are many unites use with gravitational separation equipments such as jigging machine and spiral chutes and carry out the sorting of cassiterite.Floatation is primarily aimed at particulate and recovery of micro fine particle.
For particulate and micro fine particle ore-dressing technique many all the time with single gravity treatment or flotation as core key technology.Production practices show, the single gravity table of micro fine particle sorts-the 0.043+0.010mm grain-level recovery is low, and are about about 13%, and for the cassiterite of-0.010mm grade, gravity treatment almost can't be reclaimed.Single flotation exists then that dosing is big, cost is high, environment is had certain pollution, the problem of deficiency in economic performance.
Chinese patent publication number CN101884951 discloses a kind of particulate and micro fine particle beneficiation combined method method: carry out the desulfurization flotation after particulate and micro-size fraction cassiterite are concentrated through deposition; The realization sulphide ore separates with oxide ore; Carry out the operation of flotation cassiterite then; Obtain cassiterite hair concentrate, magnetic separation again, desliming dehydration and gravity table operation finally obtain the tin concentrate.New method described in the literary composition is directly carried out the cassiterite flotation after the i.e. cassiterite desulfurization flotation, the cassiterite concentrate after the flotation carries out magnetic separation and cyclone desliming operation again.This just explains in giving the ore deposit and is existing a large amount of sludges and part iron mineral.And sludge and iron mineral are disturbing factors main in the cassiterite flotation, not only influence the stability of flotation effect, and the floating agent consumption of cassiterite can be very big, and production cost also can be very high.In addition, the cassiterite rough concentrate carries out the cyclone desliming, and the stability of desliming can directly receive the influence of cassiterite flotation effect, so stability also is difficult to guarantee.
Wu Wujin (thin mud cassiterite Research on Flotation, " Shanghai second Industry Univ's journal ", 2000 (2), 66-72) the thin mud cassiterite in Che He ore dressing plant is studied the classification overflow that this thin mud cassiterite is twice gravity tailings.Because flotation gives the clay content in the ore deposit bigger, so two kinds of technological processes having carried out desliming-floating tin and desulfurization-desliming-floating tin to this thin mud cassiterite relatively, a kind of flow process is reasonable more economically after thinking, concentrate quality is higher.This technology also is the single flotation flowsheet that adopts to the flotation of cassiterite, and is bigger to the dependence of floating agent.
He Mingfei etc. (particulate cassiterite flotation research, " Mineral Engineering ", 2008 (4), 29-31) propose method for floating and reclaimed particulate cassiterite.With BY-5 and sodium carbonate is gangue inhibitor, and BY-9 is a collecting agent, and P-86 is a supplementary catching agent; A flotation can obtain thin grade 8.56%; The tin rough concentrate of the rate of recovery 61.61%, tin rough concentrate is carrying out selectedly, and the tin concentrate grade reaches 53.58%; Operation recovery 81.35%, tin overall recovery 50.12%.This method is single method for floating, though can obtain the concentrate product than high-grade, exists the problem that the floating agent consumption is big, production cost is high equally.
In sum and since gravity treatment to micro fine particle to sort efficient low, so the direction of research has mainly concentrated on single flotation technology.Though part technology has been taked cassiterite anticipating before sorting, perhaps adopt the technological process of associating, the relatively poor problem of flotation cost height or reasonability is still unresolved.
Summary of the invention
The object of the present invention is to provide a kind of beneficiation method of micro fine particle, this method energy consumption is low, occupation area of equipment is little, sort the efficient height, the rate of recovery high.
Beneficiation method of the present invention is made up of following steps:
1. the tcrude ore ore grinding is accounted for 80～88% to-0.074mm; Add water size mixing to ore pulp be concentration 25～33%; By raw ore per ton, add 500～2000 gram copper sulphate successively, 100～200 gram butyl xanthates and No. 2 oil of 10～100 gram foaming agents; Carry out sulfide flotation, obtain flotation sulphide concentrate and flotation sulfide ore tailings;
2. be under the condition of 0.1T in the background magnetic field field intensity, magnetic separation flotation sulfide ore tailings obtains magnetic concentrate and magnetic tailing; Magnetic tailing is classified as+0.043mm and-two grades of 0.043mm;
3.+the 0.043mm grade carries out the spiral chute gravity treatment, obtains spiral chute rough concentrate and spiral chute mine tailing; The spiral chute rough concentrate carries out table concentration, obtains shaking table cassiterite concentrate and shaking table mine tailing;
4.-the 0.043mm grade carries out the cyclone desliming, obtains cyclone overflow and cyclone sand setting;
5. with the cyclone sand setting size mixing to pulp density be 25～33%; By raw ore per ton, add 500～2000 gram adjustment agent successively and size mixing, 500～1500 gram collecting agents and No. 2 oil of 20～100 gram foaming agents; Carry out roughing flotation one time, obtain roughing flotation concentrate and roughing flotation mine tailing;
6. roughing flotation mine tailing pulp density is 20～30%, and adding 500～1000 gram collecting agents, No. 2 oil of 10～40 gram foaming agents carry out a flotation to be scanned, and obtains scavenger concentrate and scans mine tailing, and scavenger concentrate is back to roughing flotation operation formation closed cycle;
7. roughing flotation concentrate pulp concentration is 10～30%, and it is selected to carry out primary blank, obtains flotation rough concentrate and flotation tailing, and flotation tailing is back to a roughing flotation operation and forms closed cycle;
8. selected rough concentrate carries out the centrifugal ore separator gravity treatment, obtains centrifugal reselection cassiterite concentrate and centrifugal reselection cassiterite chats.Shaking table cassiterite concentrate and centrifugal reselection cassiterite concentrate are merged into total cassiterite concentrate.
Said adjustment agent is sodium carbonate, waterglass or calgon.
Said collecting agent is styrene phosphoric acid, bigcatkin willow hydroximic acid ammonium or benzene first hydroximic acid.
Advantage of the present invention is: 1. before micro fine particle reclaims, carried out desulfurization flotation operation and magnetic concentration working, removed the sulphide ore and the iron mineral that influence the cassiterite concentrate quality, created good ore pulp environment for cassiterite sorts; 2.+0.043mm grade adopts spiral chute to roughly select, and has improved the disposal ability of unit are greatly, has saved floor space, the efficiency of separation is high; 3. right-0.043mm grade is done the cyclone desliming and is handled, and removes-the following sludge of 0.010mm, has reduced the interference of sludge to follow-up flotation; 4. adopt the cassiterite of roughing flotation and the selected recovery that combines of gravity treatment-0.043+0.010mm grade, the floating agent consumption is few, cost is low, and the beneficiation enrichment ratio reaches 5～10, and the cassiterite rate of recovery is high.
Description of drawings
Fig. 1: process chart of the present invention.
The specific embodiment
For a better understanding of the present invention, further illustrate content of the present invention, but content of the present invention not only is confined to embodiment below in conjunction with embodiment.
Embodiment 1
Select Chinese yunnan somewhere cassiterite raw ore for use, essential mineral consists of cassiterite, magnetic iron ore, marmatite, magnetic iron ore, hornblend, biotite, quartz, pyroxene and calcite etc.Raw ore tin grade is 0.98%.The tcrude ore ore grinding is accounted for 82% to-0.074mm, add water size mixing to ore pulp be 30% concentration, by raw ore per ton; Adding 1000 gram copper sulphate successively sizes mixing; 150 gram butyl xanthates and No. 2 oil of 80 gram foaming agents carry out sulfide flotation, obtain flotation sulphide concentrate and flotation sulfide ore tailings; Flotation sulphide concentrate stanniferous 0.35% wherein, the tin rate of recovery is 10.01%; The flotation sulfide ore tailings is to carry out magnetic separation under the condition of 0.1T in the background magnetic field field intensity, obtains magnetic concentrate and magnetic tailing, and wherein the magnetic concentrate stanniferous 0.25%, and the tin rate of recovery is 2.76%; Magnetic tailing is classified as+0.043mm and-two grades of 0.043mm; + 0.043mm grade is carried out the spiral chute gravity treatment, obtains spiral chute rough concentrate and spiral chute mine tailing; The spiral chute rough concentrate carries out table concentration, obtains shaking table cassiterite concentrate and shaking table mine tailing, and wherein shaking table cassiterite concentrate stanniferous 58.23%, the rate of recovery 23.79%;-0.043mm grade is carried out the hydrocyclone desliming, obtains cyclone overflow and cyclone sand setting; The cyclone sand setting size mixing to ore pulp be 26% concentration, by raw ore per ton, add 1000 gram waterglass successively, 1000 gram bigcatkin willow hydroximic acid ammoniums and 60 gram foaming agents No. 2 oil carry out roughing flotation one time, obtain roughing flotation concentrate and roughing flotation mine tailing; Roughing flotation mine tailing pulp density is 24%, and adding 600 gram bigcatkin willow hydroximic acid ammoniums, No. 2 oil of 40 gram foaming agents carry out a flotation to be scanned, and obtains scavenger concentrate and scans mine tailing, and scavenger concentrate is back to roughing flotation operation formation closed cycle; Roughing flotation concentrate pulp concentration is 15%, and it is selected to carry out primary blank, obtains flotation rough concentrate and flotation tailing, and wherein flotation rough concentrate tin grade is 6.20%, and flotation tailing is back to a roughing flotation operation and forms closed cycle; The flotation rough concentrate carries out the centrifugal ore separator gravity treatment, obtains centrifugal reselection cassiterite concentrate and centrifugal reselection cassiterite chats, centrifugal reselection cassiterite concentrate tin grade 49.08% wherein, and the rate of recovery is 40.11%, the operation concentration ratio is 7.92.Shaking table cassiterite concentrate and centrifugal reselection cassiterite concentrate are merged into total cassiterite concentrate, and the tin grade is 52.13%, and overall recovery reaches 58.83%.
Embodiment 2
Raw ore is identical with embodiment 1, and raw ore tin grade is 0.96%.The tcrude ore ore grinding is accounted for 85% to-0.074mm, add water size mixing to ore pulp be 30% concentration, by raw ore per ton; Adding 1500 gram copper sulphate successively sizes mixing; 150 gram butyl xanthates and No. 2 oil of 100 gram foaming agents carry out sulfide flotation, obtain flotation sulphide concentrate and flotation sulfide ore tailings; Flotation sulphide concentrate stanniferous 0.31% wherein, the tin rate of recovery is 8.38%; The flotation sulfide ore tailings is to carry out magnetic separation under the condition of 0.1T in the background magnetic field field intensity, obtains magnetic concentrate and magnetic tailing, and wherein the magnetic concentrate stanniferous 0.22%, and the tin rate of recovery is 2.06%; Magnetic tailing is classified as+0.043mm and-two grades of 0.043mm; + 0.043mm grade is carried out the spiral chute gravity treatment, obtains spiral chute rough concentrate and spiral chute mine tailing; The spiral chute rough concentrate carries out table concentration, obtains shaking table cassiterite concentrate and shaking table mine tailing, and wherein shaking table cassiterite concentrate stanniferous 57.03%, the rate of recovery 29.65%;-0.043mm grade product carries out the hydrocyclone desliming, obtains cyclone overflow and cyclone sand setting; The cyclone sand setting size mixing to ore pulp be 26% concentration, by raw ore per ton, add 1000 gram sodium carbonate successively, 1000 gram styrene phosphoric acid and 60 gram foaming agents No. 2 oil carry out roughing flotation one time, obtain roughing flotation concentrate and roughing flotation mine tailing; Roughing flotation mine tailing pulp density is 24%, and adding 600 gram styrene phosphoric acid, No. 2 oil of 40 gram foaming agents carry out a flotation to be scanned, and obtains scavenger concentrate and scans mine tailing, and scavenger concentrate is back to roughing flotation operation formation closed cycle; Roughing flotation concentrate pulp concentration is 12%, and it is selected to carry out primary blank, obtains flotation rough concentrate and flotation tailing, and wherein flotation rough concentrate tin grade is 5.80%, and flotation tailing is back to a roughing flotation operation and forms closed cycle; The flotation rough concentrate carries out the centrifugal ore separator gravity treatment, obtains centrifugal reselection cassiterite concentrate and centrifugal reselection cassiterite chats, centrifugal reselection cassiterite concentrate tin grade 48.08% wherein, and the rate of recovery is 35.00%, the operation concentration ratio is 8.29.Shaking table cassiterite concentrate and centrifugal reselection cassiterite concentrate are merged into total cassiterite concentrate, and the tin grade is 51.81%, and overall recovery reaches 64.65%.
Embodiment 3
Raw ore is identical with embodiment 1, and raw ore tin grade is 1.08%.The tcrude ore ore grinding is accounted for 86% to-0.074mm, add water size mixing to ore pulp be 29% concentration, by raw ore per ton; Adding 2000 gram copper sulphate successively sizes mixing; 200 gram butyl xanthates and No. 2 oil of 100 gram foaming agents carry out sulfide flotation, obtain flotation sulphide concentrate and flotation sulfide ore tailings; Flotation sulphide concentrate stanniferous 0.36% wherein, the tin rate of recovery is 9.99%; The flotation sulfide ore tailings is to carry out magnetic separation under the condition of 0.1T in the background magnetic field field intensity, obtains magnetic concentrate and magnetic tailing, and wherein the magnetic concentrate stanniferous 0.30%, and the tin rate of recovery is 2.22%; Magnetic tailing is classified as+0.043mm and-two grades of 0.043mm; + 0.043mm grade is carried out the spiral chute gravity treatment, obtains spiral chute rough concentrate and spiral chute mine tailing; The spiral chute rough concentrate carries out table concentration, obtains shaking table cassiterite concentrate and shaking table mine tailing, and wherein shaking table cassiterite concentrate stanniferous 55.20%, the rate of recovery 30.65%;-0.043mm grade is carried out the hydrocyclone desliming, obtains cyclone overflow and cyclone sand setting; The cyclone sand setting size mixing to ore pulp be 25% concentration, by raw ore per ton, add 500 gram calgons successively, 1000 gram benzene first hydroximic acids and 60 gram foaming agents No. 2 oil carry out roughing flotation one time, obtain roughing flotation concentrate and roughing flotation mine tailing; Roughing flotation mine tailing pulp density is 24%, and adding 600 gram benzene first hydroximic acids, No. 2 oil of 40 gram foaming agents carry out a flotation to be scanned, and obtains scavenger concentrate and scans mine tailing, and scavenger concentrate is back to roughing flotation operation formation closed cycle; Roughing flotation concentrate pulp concentration is 10%, and it is selected to carry out primary blank, obtains flotation rough concentrate and flotation tailing, and wherein flotation rough concentrate tin grade is 5.60%, and flotation tailing is back to a roughing flotation operation and forms closed cycle; The flotation rough concentrate carries out the centrifugal ore separator gravity treatment, obtains centrifugal reselection cassiterite concentrate and centrifugal reselection cassiterite chats, centrifugal reselection cassiterite concentrate tin grade 47.00% wherein, and the rate of recovery is 34.79%, the operation concentration ratio is 8.39.Shaking table cassiterite concentrate and centrifugal reselection cassiterite concentrate are merged into total cassiterite concentrate, and the tin grade is 50.51%, and overall recovery reaches 65.44%.
Claims (3)
1. the beneficiation method of a micro fine particle is characterized in that being made up of following steps:
1. the tcrude ore ore grinding is accounted for 80～88% to-0.074mm; Add water size mixing to ore pulp be concentration 25～33%; By raw ore per ton, add 500～2000 gram copper sulphate successively, 100～200 gram butyl xanthates and No. 2 oil of 10～100 gram foaming agents; Carry out sulfide flotation, obtain flotation sulphide concentrate and flotation sulfide ore tailings;
2. be under the condition of 0.1T in the background magnetic field field intensity, magnetic separation flotation sulfide ore tailings obtains magnetic concentrate and magnetic tailing; Magnetic tailing is classified as+0.043mm and-two grades of 0.043mm;
3.+the 0.043mm grade carries out the spiral chute gravity treatment, obtains spiral chute rough concentrate and spiral chute mine tailing; The spiral chute rough concentrate carries out table concentration, obtains shaking table cassiterite concentrate and shaking table mine tailing;
4.-the 0.043mm grade carries out the cyclone desliming, obtains cyclone overflow and cyclone sand setting;
5. with the cyclone sand setting size mixing to pulp density be 25～33%; By raw ore per ton, add 500～2000 gram adjustment agent successively and size mixing, 500～1500 gram collecting agents and No. 2 oil of 20～100 gram foaming agents; Carry out roughing flotation one time, obtain roughing flotation concentrate and roughing flotation mine tailing;
6. roughing flotation mine tailing pulp density is 20～30%, and adding 500～1000 gram collecting agents, No. 2 oil of 10～40 gram foaming agents carry out a flotation to be scanned, and obtains scavenger concentrate and scans mine tailing, and scavenger concentrate is back to roughing flotation operation formation closed cycle;
7. roughing flotation concentrate pulp concentration is 10～30%, and it is selected to carry out primary blank, obtains flotation rough concentrate and flotation tailing, and flotation tailing is back to a roughing flotation operation and forms closed cycle;
8. the flotation rough concentrate carries out the centrifugal ore separator gravity treatment, obtains centrifugal reselection cassiterite concentrate and centrifugal reselection cassiterite chats.Shaking table cassiterite concentrate and centrifugal reselection cassiterite concentrate are merged into total cassiterite concentrate.
2. the beneficiation method of micro fine particle according to claim 1 is characterized in that said adjustment agent is sodium carbonate, waterglass or calgon.
3. the beneficiation method of micro fine particle according to claim 1 is characterized in that said collecting agent is styrene phosphoric acid, bigcatkin willow hydroximic acid ammonium or benzene first hydroximic acid.
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| CN102847350A (en) * | 2012-09-05 | 2013-01-02 | 云南华联锌铟股份有限公司 | Efficient desliming process and combination equipment |
| CN102872970A (en) * | 2012-10-29 | 2013-01-16 | 云南华联锌铟股份有限公司 | Process for improving quality and reducing impurities of tin stone multi-metal sulfide ore tin ore concentrate and combined equipment |
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