CN105032638A - Desliming method used in fine cassiterite beneficiation - Google Patents
Desliming method used in fine cassiterite beneficiation Download PDFInfo
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- CN105032638A CN105032638A CN201510371043.5A CN201510371043A CN105032638A CN 105032638 A CN105032638 A CN 105032638A CN 201510371043 A CN201510371043 A CN 201510371043A CN 105032638 A CN105032638 A CN 105032638A
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- flotation
- desliming
- ore pulp
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- hydrocyclone
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Abstract
The invention discloses a desliming method used in fine cassiterite beneficiation, and relates to the technical field of beneficiation. The method includes the steps that a hydrocyclone is adopted for performing first-stage grading and desliming on ore pulp; settling sand generated after first-stage grading is conveyed into a stirring drum used before flotation, and overflow generated after first-stage grading is conveyed into a thick slime bucket to be subjected to second-stage grading and desliming; and settling sand generated after second-stage grading is conveyed into the stirring drum, and overflow generated after second-stage grading is discarded as tailings. Compared with the prior art, due to the fact that the hydrocyclone is adopted for performing first-stage grading and desliming on the ore pulp before flotation, and the thick slime bucket is adopted for performing second-stage grading and desliming on the ore pulp, the particle size of the ore pulp reaches an ideal value needed by flotation, good conditions are provided for flotation, and the flotation effect is improved; due to the fact that the slime content of the ore pulp to be subjected to flotation is reduced, the flotation operation recovery rate can be increased by 5%; and due to the fact that the content of particle-grade minerals is reduced, the consumption of agents needed by flotation can be reduced by about15%.
Description
Technical field
The present invention relates to technical field of beneficiation, the Desliming method in especially a kind of Fine cassiterite ore dressing.
Background technology
Flotation is method conventional in ore dressing, because it adopts the principle of sorting, has higher requirement for feed preparation unit size.Sulfide flotation upper limit size is generally 0.2 ~ 0.25mm, and non-sulfide ore flotation upper limit size is 0.25 ~ 0.3mm, and the nonmetallic ore equigranular upper limit can be increased to about 0.5mm; But when feed preparation unit size is less than 0.01mm, the effect of flotation is poor.Due to fine fraction ore particle and sludge, to have quality little, the features such as specific area is large, and sizing mixing and in floatation process, causing fine particles flotation to slow, poor selectivity, the rate of recovery reduces, and floatation indicators obviously worsens.For alleviating and prevent adverse effect and the strengthening fine particles flotation of sludge, before flotation, often desliming process is carried out to ore pulp.
Che He ore dressing plant is to process cassiterite, because cassiterite is crisp, cassiterite sorts easy mistake in process at flow cycles and pulverizes, in mining and each flow process of ore dressing or operation, the pulverizing sludge excessively of easy generation particulate and micro-size fraction, what directly affects preparation equipment sorts efficiency, reduces cassiterite recovery rate in ore-dressing and resource utilization.Therefore, in order to reclaim the Fine cassiterite of 10 microns to 37 microns, be provided with Fine cassiterite flotation at flow process end, find in production practices, because the ore pulp clay content entering flotation is excessive, cause Fine cassiterite flotation effect poor, therefore, before flotation, be provided with desliming classifying equipoment and hydrocyclone, reduce the clay content in ore pulp, improve flotation effect, technological process as shown in Figure 1; Existing floating tin feed preparation unit size measurement result is in table 1.
The partition size of hydrocyclone and overfall, desilting mouth diameter are relevant, can reach the object regulating partition size, but this control method still seldom arrive comparatively ideal feed preparation unit size aborning by regulating the size of wherein some diameters.
Summary of the invention
Technical problem to be solved by this invention is to provide the Desliming method in a kind of Fine cassiterite ore dressing, and adopt hydrocyclone to carry out graded desliming to the ore pulp before flotation at present to solve, ore pulp does not reach the problem of the desired particle size needed for flotation.
In order to solve the problem, the technical solution used in the present invention is: the Desliming method in Fine cassiterite ore dressing, comprise and adopt hydrocyclone to carry out one section of graded desliming to ore pulp, agitator before the sand setting feeding flotation of one section of classification, the overflow of one section of classification is sent into dense bucket and is carried out two sections of graded deslimings, the sand setting of two sections of classifications sends into described agitator, and tail is lost in the overflow of two sections of classifications.
In Desliming method technical scheme in above-mentioned Fine cassiterite ore dressing, technical scheme can also be more specifically: the internal diameter of described hydrocyclone is 250mm.
Further, described dense bucket is the square dense bucket of 1500 × 1500mm.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, the present invention adopts hydrocyclone to carry out one section of graded desliming to the ore pulp before flotation, dense bucket carries out two sections of graded deslimings, utilize the different of hydrocyclone and dense bucket grading power, pulp granularity is regulated, particularly to the removal of fine particles mineral, when ensureing that coarse particles mineral loss reduces, reduce the content of fine particles mineral as far as possible, make ore pulp reach desired particle size needed for flotation, for flotation provides good condition, improve flotation effect.
2, the ore pulp clay content owing to entering flotation reduces, and the operation recovery of flotation can improve 5 percentage points; Decrease fine particles mineral content, needed for flotation, reagent consumption amount can reduce about 15%.
Accompanying drawing explanation
Fig. 1 is former process chart.
Fig. 2 is the process chart of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
Desliming method in a kind of Fine cassiterite ore dressing, comprise and adopt hydrocyclone to carry out one section of graded desliming to the ore pulp after desulfurization, the sand setting of one section of classification is discharged through the spigot of hydrocyclone, send into the agitator before flotation, the overflow of one section of classification is flowed out through the overfall of hydrocyclone, sends into dense bucket and carries out two sections of graded deslimings, and the sand setting of two sections of classifications is discharged through the sand removing hole of dense bucket, send into the agitator before flotation, the overflow of two sections of classifications loses tail through the overflow channel of dense bucket.
Che He ore dressing plant is improved former mineral processing circuit, and be provided with ∮ 250 cyclone and the square dense bucket composite ratings facility of 1500 × 1500mm at Fu Xiqian, its technological process as shown in Figure 2; After this facility normally runs one month, measure floating tin feed preparation unit size, measurement result is in table 2;
Contrasted visible after composite ratings by table 1, table 2 ,-0.037mm grade productive rate is reduced to 7.8% by 15.47%, and tin distributive law 11.59% is reduced to 3.95%, and the clay content entering floating tin reduces greatly; The operation recovery of floating tin is increased to 88.17%, BY-9 consumption by 83.78% and is reduced to 0.17kg/t by 0.20kg/t simultaneously, while flotation efficiency improves, reduces floating agent consumption.
The present invention also can be used for before the higher gravity treatment of feed preparation unit size requirement.
Claims (3)
1. the Desliming method in a Fine cassiterite ore dressing, comprise and adopt hydrocyclone to carry out one section of graded desliming to ore pulp, agitator before the sand setting feeding flotation of one section of classification, it is characterized in that: the overflow of one section of classification is sent into dense bucket and carried out two sections of graded deslimings, the sand setting of two sections of classifications sends into described agitator, and tail is lost in the overflow of two sections of classifications.
2. the Desliming method in Fine cassiterite ore dressing according to claim 1, is characterized in that: the internal diameter of described hydrocyclone is 250mm.
3. the Desliming method in Fine cassiterite ore dressing according to claim 1 and 2, is characterized in that: described dense bucket is the square dense bucket of 1500 × 1500mm.
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| CN201510371043.5A CN105032638A (en) | 2015-06-30 | 2015-06-30 | Desliming method used in fine cassiterite beneficiation |
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| CN201510371043.5A CN105032638A (en) | 2015-06-30 | 2015-06-30 | Desliming method used in fine cassiterite beneficiation |
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| CN105032638A true CN105032638A (en) | 2015-11-11 |
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| CN201510371043.5A Pending CN105032638A (en) | 2015-06-30 | 2015-06-30 | Desliming method used in fine cassiterite beneficiation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513165A (en) * | 2016-12-29 | 2017-03-22 | 云南锡业股份有限公司卡房分公司 | Floatation and impurity removal method before tin backwashing and reselection operation of tin copper associated sulphide ore |
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| CN103381388A (en) * | 2013-07-19 | 2013-11-06 | 广西华锡集团股份有限公司再生资源分公司 | Tin reclaiming method for fine-grain and low-grade secondary mineral tailings |
| CN103433122A (en) * | 2013-09-12 | 2013-12-11 | 广西华锡集团股份有限公司车河选矿厂 | Quality-separating, grading and sorting process for tin middlings |
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2015
- 2015-06-30 CN CN201510371043.5A patent/CN105032638A/en active Pending
Patent Citations (4)
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| US5794791A (en) * | 1987-11-30 | 1998-08-18 | Genesis Research Corporation | Coal cleaning process |
| CN101462731A (en) * | 2009-01-15 | 2009-06-24 | 十堰飞远汽车零部件有限公司 | Recovery and reuse method for used sodium silicate sand |
| CN103381388A (en) * | 2013-07-19 | 2013-11-06 | 广西华锡集团股份有限公司再生资源分公司 | Tin reclaiming method for fine-grain and low-grade secondary mineral tailings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513165A (en) * | 2016-12-29 | 2017-03-22 | 云南锡业股份有限公司卡房分公司 | Floatation and impurity removal method before tin backwashing and reselection operation of tin copper associated sulphide ore |
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Application publication date: 20151111 |