CN107583769A - A kind of method that flotation tailing normal temperature selects tungsten - Google Patents
A kind of method that flotation tailing normal temperature selects tungsten Download PDFInfo
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- CN107583769A CN107583769A CN201610524190.6A CN201610524190A CN107583769A CN 107583769 A CN107583769 A CN 107583769A CN 201610524190 A CN201610524190 A CN 201610524190A CN 107583769 A CN107583769 A CN 107583769A
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Abstract
The present invention relates to a kind of method that flotation tailing normal temperature selects tungsten, step are as follows：A. grinding-classification operation：, to carry out the flotation of gold after 0.074mm percentage compositions 60%, Gold Concentrate under Normal Pressure and flotation tailing will be obtained containing golden tungsten ore ore grinding to granularity；B. flotation tailing normal temperature selects tungsten operation：CaO, Na are added after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%2CO3Pulp PH value is set to reach 8, add modulus be 2.1 3.8 waterglass as inhibitor, oxidized paraffin wax soap powder as collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1500 2600g, oxidized paraffin wax soap powder is 300 600g, carries out one roughing, scans twice, selected obtains tungsten concentrate five times.With the advantages of simple to operate, energy consumption is small, production cost is low, solve the problems, such as that white tungsten normal temperature flotation separation is difficult, obtain the qualified products of white tungsten, improve economic benefit.
Description
Technical field
The present invention relates to a kind of method that flotation tailing normal temperature selects tungsten.
Background technology
It is known that China is the tungsten resource big country of the first in the world, being greatly decreased and being needed to tungsten resource with black tungsten resource
Ask and sharply increase, particularly in recent years tungsten metal price greatly improve and to improve comprehensive resource utilization rate strong request, greatly
The big dynamics that have stimulated the exploitation of scheelite stone.The utilization of the scheelite stone or even tailing low-grade, property is complicated all by
To attention.Scheelite floatability is preferable, but head grade is relatively low, and is usually in fine-grained disseminated grain, often preferably contains with floatability
Calcium gangue mineral symbiosis, add its and sort recovery difficult, particularly white tungsten normal temperature flotation have become problem in ore dressing it
One.
Scheelite Deposit is often accompanied by a variety of sulphide ores, general in ore dressing process first to float sulphide ore, rear fubai tungsten ore, due to white
Tungsten ore is often and the phosphate of various calcium and magnesiums, sulfate, carbonate, fluoride symbiosis, their floatability are similar, it is difficult to selects conjunction
Lattice white tungsten fine ore, lime being commonly used in the past and was sized mixing, adds waterglass, finally plus collecting agent carries out collecting, using heating when selected
Low-grade rough concentrate is added a large amount of waterglass by beneficiation process, is warming up to 60-90 DEG C and is boiled a period of time, stirs, is dehydrated, sizes mixing,
It is selected 4-8 times again, you can to obtain the higher concentrate of grade.Although the method can obtain qualified white tungsten fine ore, energy consumption is big, into
This height, complex operation.But existing energy consumption is small, cost low normal temp select tungsten to obtain tungsten concentrate grade is low, and white tungsten fine ore product is not
It is qualified.
The content of the invention
It is an object of the invention to provide a kind of method that flotation tailing normal temperature selects tungsten, have that simple to operate, energy consumption is small, raw
The advantages of cost is low is produced, solves the problems, such as that white tungsten normal temperature flotation separation is difficult, obtains the qualified products of white tungsten, improve economic effect
Benefit.
The purpose of the present invention is achieved through the following technical solutions：
A kind of method that flotation tailing normal temperature selects tungsten, step are as follows：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 2.1-3.8 waterglass as inhibitor, oxidized paraffin wax soap powder
As collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1500-2600g, and oxidized paraffin wax soap powder is 300-
600g, one roughing is carried out, scans twice, selected obtain tungsten concentrate five times.
Further, the modulus of described waterglass is 2.3.
Further, the waterglass of described addition is 1800g, and the oxidized paraffin wax soap powder of addition is 400g.
Beneficial effects of the present invention：
1st, method provided by the invention realizes white tungsten normal temperature flotation, while obtains the qualified products of white tungsten fine ore, energy
Consume that small, production cost is low, simple to operate, obtain qualified tungsten concentrate, economic benefit is added for enterprise.
2nd, method provided by the invention successfully realizes normal temperature and selects tungsten, and it is 43.01% to obtain grade, and the rate of recovery is
86.98% white tungsten fine ore, intractable resource of tailings is set to be fully used.
Brief description of the drawings
Fig. 1 is the process chart of the present invention
Instantiation mode
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
Henan contains gold flotation tailing, and it is carried out multielement analysis the results are shown in Table 1, Fe clusters carry out analysis result see
Table 2, tungsten thing mutually carry out analysis result and are shown in Table 3：
Table 1：
| Element | Au(g/t) | Ag(g/t) | Cu(g/t) | Pb(g/t) | Zn(g/t) | Fe(g/t) | S(g/t) |
| Content (%) | 0.10 | 7.25 | 0.0057 | <0.005 | 0.0052 | 1.98 | 0.043 |
| Element | As | C | CaO | MgO | SiO2 | Al2O3 | WO3 |
| Content (%) | <0.005 | 0.62 | 1.79 | 0.68 | 88.67 | 5.00 | 0.23 |
Table 2：
| Element term | TFe | Fe/Fe3O4 | Fe/FeCO3 | Fe/Fe2O3 | Fe/FeS2 | Fe/FeSiO3 |
| Content (%) | 1.98 | 0.19 | 0.66 | 0.77 | 0.04 | 0.32 |
| Relative amount (%) | 100.00 | 9.60 | 33.33 | 38.89 | 2.02 | 16.16 |
Table 3：
| Element term | TWO3 | Scheelite | Wolframite | Wolfram ocher |
| Content (%) | 0.23 | 0.225 | 0.009 | 0.002 |
| Relative amount (%) | 100.00 | 95.22 | 3.91 | 0.87 |
According to ore technology mineralogical study, the embedding even relation of scheelite in ore is analyzed, through rich to sample
Detected after collection under mirror, scheelite monomer dissociation degree is higher, and more than 93% is accounted for the scheelite that free state is distributed.See have under mirror
(gangue having is in lean intergrowth shape for the gangue mineral adhesions such as quartz that a small amount of scheelite differs with granule size, feldspar, hornblend
State and scheelite adhesion).Dialogue tungsten particle size measurement is shown in Table 4.
Table 4：Scheelite particle size measurement
Embodiment 1
As shown in figure 1, the Henan for choosing the above contains gold flotation tailing, normal temperature is carried out in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 2.3 waterglass as inhibitor, oxidized paraffin wax soap powder conduct
Collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1800g, and oxidized paraffin wax soap powder is 400g, is carried out once thick
Select, scan twice, selected obtaining tungsten concentrate five times.
Embodiment 2
The Henan for choosing the above contains gold flotation tailing, carries out normal temperature in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 2.1 waterglass as inhibitor, oxidized paraffin wax soap powder conduct
Collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1500g, and oxidized paraffin wax soap powder is 300g, is carried out once thick
Select, scan twice, selected obtaining tungsten concentrate five times.
Embodiment 3
The Henan for choosing the above contains gold flotation tailing, carries out normal temperature in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 2.8 waterglass as inhibitor, oxidized paraffin wax soap powder conduct
Collecting agent, being calculated by raw ore per ton to ore deposit, the waterglass of addition is 2600, and oxidized paraffin wax soap powder is 500g, progress one roughing,
Scan twice, selected obtain tungsten concentrate five times.
Embodiment 4
The Henan for choosing the above contains gold flotation tailing, carries out normal temperature in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 2.5 waterglass as inhibitor, oxidized paraffin wax soap powder conduct
Collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1900g, and oxidized paraffin wax soap powder is 600g, is carried out once thick
Select, scan twice, selected obtaining tungsten concentrate five times.
Embodiment 5
The Henan for choosing the above contains gold flotation tailing, carries out normal temperature in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 3.6 waterglass as inhibitor, oxidized paraffin wax soap powder conduct
Collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1700g, and oxidized paraffin wax soap powder is 350g, is carried out once thick
Select, scan twice, selected obtaining tungsten concentrate five times.
Embodiment 6
The Henan for choosing the above contains gold flotation tailing, carries out normal temperature in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is reached 8, add modulus be 3.8 waterglass as inhibitor, oxidized paraffin wax soap powder conduct
Collecting agent, calculated by raw ore per ton to ore deposit, the waterglass of addition is 1800g, and oxidized paraffin wax soap powder is 600g, is carried out once thick
Select, scan twice, selected obtaining tungsten concentrate five times.
Verification experimental verification is carried out to embodiment 1-6, the grade of obtained tungsten concentrate is 41.08-43.01%, and the rate of recovery is
81.02-86.98%, the result of the test of wherein embodiment 1 are shown in Table 6,
Table 6：
| Product title | Yield (%) | WO3Grade (%) | WO3The rate of recovery (%) |
| Tungsten concentrate | 0.51 | 43.01 | 86.98 |
| Tungsten tailing | 99.49 | 0.033 | 13.02 |
| Raw ore | 100.00 | 0.25 | 100.00 |
Comparative example：
The Henan for choosing the above contains gold flotation tailing, carries out normal temperature in accordance with the following steps and selects tungsten：
A. grinding-classification operation：To be progress gold after -0.074mm percentage compositions 60% containing golden tungsten ore ore grinding to granularity
Flotation, obtain Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Add after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
Enter CaO, Na2CO3Pulp PH value is set to reach 8, oxidized paraffin wax soap powder carries out one roughing, scanned twice, five times as collecting agent
It is selected to obtain tungsten concentrate.
Table 5：
Result of the test shows：Tungsten concentrate grade is only 8.83%, cannot get qualified white tungsten fine ore product.
The technical principle of the present invention：The grade of scheelite is low in the flotation tailing of gold, complicated components, with the mineral such as gangue
Floatability is close, to realize the normal temperature flotation of scheelite, obtains qualified white tungsten fine ore, is added in the flow that normal temperature selects white tungsten
A kind of inhibitor, suppress the floating of gangue, so that white tungsten fine ore reaches sale standard.Calcium oxide (CaO), it is a kind of inorganization
Compound, popular name quick lime.Physical property is superficial white powder, has hygroscopicity, absorbing carbon dioxide and water easily from air
Point.Generation calcium hydroxide, reaction equation can be reacted with water:CaO+H2O==Ca (OH)2, can be used for adjusting the pH of ore pulp
Value.Sodium carbonate (Na2CO3, abbreviation SC), popular name soda ash, be at normal temperatures white powder or the crystal of particulate, it is soluble in water, compared with
Stably it is not easily decomposed at high temperature, and the aqueous solution is in strong basicity, can be used for adjusting the pH value of ore pulp.Waterglass is sodium metasilicate
Liquid condition, the soluble alkali metal silicate material being combined into by alkali metal oxide and silica, also known as flower bulb
Alkali.Its molecular formula is Na2OnSiO2, and the coefficient n in formula is referred to as modulus of water glass, is silica and alkali metal in waterglass
The molecular proportion (or mol ratio) of oxide.Modulus of water glass is the important parameter of waterglass, typically between 1.5-3.5, water glass
Glass modulus is the major parameter of Scheelite Flotation ore deposit, and the modulus chosen in method of the invention is 2.3.
Claims (3)
1. a kind of method that flotation tailing normal temperature selects tungsten, it is characterised in that step is as follows：
A. grinding-classification operation：It will be floated containing golden tungsten ore ore grinding to granularity for progress after -0.074mm percentage compositions 60% is golden
Choosing, obtains Gold Concentrate under Normal Pressure and flotation tailing；
B. flotation tailing normal temperature selects tungsten operation：Added after the obtained flotation tailings of step a are adjusted into mass percentage concentration 30%
CaO、Na2CO3Pulp PH value is reached 8, add the waterglass that modulus is 2.1-3.8 and make as inhibitor, oxidized paraffin wax soap powder
For collecting agent, being calculated by raw ore per ton to ore deposit, the waterglass of addition is 1500-2600g, and oxidized paraffin wax soap powder is 300-600g,
One roughing is carried out, scans twice, selected obtain tungsten concentrate five times.
2. the method that a kind of flotation tailing normal temperature as claimed in claim 1 selects tungsten, it is characterised in that：The mould of described waterglass
Number is 2.3.
3. the method that a kind of flotation tailing normal temperature as claimed in claim 1 selects tungsten, it is characterised in that：The water glass of described addition
Glass is 1800g, and the oxidized paraffin wax soap powder of addition is 400g.
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Cited By (2)
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| CN109092561A (en) * | 2018-08-10 | 2018-12-28 | 湖南柿竹园有色金属有限责任公司 | A kind of room temperature black and white tungsten separating technology |
| CN112452549A (en) * | 2020-10-22 | 2021-03-09 | 江西理工大学 | Beneficiation method for micro-fine particle tungsten ore |
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Application publication date: 20180116 |