CN107716121A - Application of the hydroxypropyl starch ether in Scheelite Flotation - Google Patents
Application of the hydroxypropyl starch ether in Scheelite Flotation Download PDFInfo
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- CN107716121A CN107716121A CN201710902066.3A CN201710902066A CN107716121A CN 107716121 A CN107716121 A CN 107716121A CN 201710902066 A CN201710902066 A CN 201710902066A CN 107716121 A CN107716121 A CN 107716121A
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- scheelite
- flotation
- white tungsten
- ore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/025—Precious metal ores
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to technique of preparing, more particularly to a kind of application of hydroxypropyl starch ether in Scheelite Flotation.The present invention can suppress Scheelite Flotation using depressing agent hydroxypropyl starch ether, significantly improve the gangue minerals such as fluorite, calcite aluminium silicate mineral and scheelite mineral floatability difference, realize that gangue mineral separates with the reverse flotation of scheelite, solve the problems, such as that scheelite separates difficulty with gangue minerals such as calcite, fluorite, aluminium silicate minerals.The depressing agent that the present invention uses is advantageous to the raising of Scheelite Concentrate grade and the rate of recovery, shortens flotation flowsheet, reduces production cost, and it is horizontal to improve comprehensive utilization of resources.
Description
Technical field
The present invention relates to technique of preparing, more particularly to a kind of application of hydroxypropyl starch ether in Scheelite Flotation.
Background technology
China's scheelite reserves are big, but most grades are low, more than 80% grade≤0.4%, and mineral composition is answered
It is miscellaneous, disseminated grain size is thinner, mainly with the association altogether such as non-ferrous metal and noble metal, and some gangue minerals and scheelite floatability are non-
Very close to causing the most of scheelites in China to there are problems that sorting, difficulty is big, concentrate is of poor quality, the rate of recovery is low etc..Scheelite master
Beneficiation method is wanted to have gravity treatment and flotation.The thicker scheelite of gravity separation method processing disseminated grain size, floatation sort the white tungsten of fine-grained disseminated grain
Ore deposit.Scheelite Flotation flow generally includes roughing section and selected section, and roughing section is mainly selected section of progress preenrichment.According to selected
Scheelite Flotation can be divided into normal temperature concentration technique and heating concentration technique by the difference of phase method.At present floatation commercial Application into
It is ripe, production target is more satisfactory, but still suffer from some problems and shortcomings：
Selected section of (1) two kind of method for floating is general all need 5 times it is selected more than, i.e. technological process is tediously long, complex operation, production
Cost is high, metal recovery rate loss is big.
(2) white tungsten dressing process substantially suppresses gangue mineral and Scheelite Flotation mineral at present, and the arteries and veins such as calcite, fluorite
Stone ore thing floatability and scheelite mineral are very close, and are easy in grinding process to produce crushing, and surface-active is very high, it is difficult to
It is effectively suppressed, therefore, the methods of generally requiring by adding a large amount of waterglass or heating realizes effective suppression of gangue mineral
System, causes that reagent cost is high, energy consumption is big, complex operation, is unfavorable for the subsequent treatment of concentrate and tailings, environmental protection pressure is big.
(3) gangue species is various in scheelite, and ore properties are complicated, and single inhibitor is difficult to realize to a variety of gangue minerals
Effective suppression, composite restrainer exist again regime of agent complexity, FLOTATION SEPARATION effect is influenceed, so as to cause concentrate quality relative
It is poor, the rate of recovery is relatively low.
Therefore, Scheelite Flotation new technology efficiently, economic, environmentally friendly, new medicament research are still scheelite technique of preparing neck
One important research content in domain.
So-called starch ether, just refer to that-the OH in starch molecular structure reacts amylogenic substituent ether with active material,
Mainly include hydroxyalkyl starch ether, carboxyalkyl starch ether, alkyl starches ether, unsaturated alkyl starch ether and cationic starch etc.,
Ethers starch product viscosity stability is good, is widely used in the fields such as papermaking, water process, weaving, medicine, detergent, but white
Tungsten floating agent field yet there are no its application report.
The content of the invention
It is an object of the invention to provide a kind of application of hydroxypropyl starch ether in Scheelite Flotation.For solution containing side at present
The complicated difficult of the gangue minerals such as stone, fluorite, quartz selects that Scheelite Flotation concentrate is of poor quality, effective rate of recovery is relatively low, technological process
Complicated, the problems such as flotation cost is high, the present invention can suppress Scheelite Flotation using depressing agent hydroxypropyl starch ether, significantly
Gangue mineral and the scheelite mineral floatability differences such as fluorite, calcite aluminium silicate mineral are improved, realizes gangue mineral and white tungsten
The reverse flotation separation of ore deposit, solves the problems, such as that scheelite separates difficulty with gangue minerals such as calcite, fluorite, aluminium silicate minerals.Should
Inhibitor can also be used for during the gangue mineral FLOTATION SEPARATION such as wolframite and calcite, fluorite, quartz and aluminium silicate mineral
The suppression of wolframite thing.
Technical scheme：
Hydroxypropyl starch ether is applied in Scheelite Flotation, can suppress Scheelite Flotation, make fluorite, calcite, manosil AS
Salt mine separates with scheelite reverse flotation.
A kind of method for floating of scheelite, comprises the following steps：
1. by white tungsten crushing raw ore, fine grinding, classification, mog is that -0.15mm accounts for 60%~80%, and ore milling product uses
Sieve aperture 0.15mm sieve is classified, and oversize is returned and regrinded, and undersize enters sorting operation；
2. the undersize of step 1. gained is subjected to white tungsten preenrichment using shaking table, spiral chute, centrifugal ore separator；Weight
The light product of choosing gained directly abandons as mine tailing, and weight product is white tungsten rough concentrate, into follow-up white selected section of tungsten；
3. by step, 2. gained scheelite rough concentrate is finely ground to after -0.074mm accounts for 60%~85%, and it is selected to carry out white tungsten,
Tungsten is selected in vain carries out floatation desulphurization first；White tungsten floatation desulphurization is returned using one roughing primary cleaning once purging selection, chats order
The technological process returned, desulfurization flotation are carried out under the conditions of ore pulp nature pH；Using xanthate, black powder as collecting agent, roughing collecting agent is used
Measure 10g/t~80g/t, action time 1min~3min, desulfurization scan collector dosage halve i.e. 5g/t~40g/t, effect when
Between 1min~3min；Using No. 2 oil as foaming agent, roughing dosage 10g/t~40g/t, action time 1min；Gained froth pulp is
Sulphide ore rough concentrate is separately individually handled, and bottom land product carries out white tungsten reverse flotation enrichment；
4. by step, 3. the desulfurization flotation tailing of gained carries out white tungsten reverse flotation and is enriched with, and white tungsten reverse flotation enrichment is using once
The roughing technological process that selected once purging selection, chats order return twice；White tungsten roughing adjusts ore pulp with sodium carbonate or sodium hydroxide
PH to 7~12, effect 1min~3min, then add inhibitor hydroxypropyl starch ether 40g/t~200g/t, action time successively
3min~5min, enuatrol or 731,733 white tungsten flotation collector 200g/t~800g/t, action time 1min~3min；Sweep
Choosing addition inhibitor hydroxypropyl starch ether 20g/t~100g/t, action time 1min~3min；Selected 1, selected 2 add respectively
Collecting agent 60g/t~200g/t, 20g/t~60g/t, action time 1min~3min；Finally reinflated to scrape bubble, froth pulp is
Mine tailing, bottom land product are white tungsten fine ore.
Beneficial effects of the present invention：
(1) it is strong to the inhibitor ability of scheelite mineral, be advantageous to the raising of Scheelite Concentrate grade and the rate of recovery, shorten floating
Flow is selected, reduces production cost, it is horizontal to improve comprehensive utilization of resources.
Minal Study of flotation result shows, when hydroxypropyl starch ether concentration reaches more than 80mg/L in ore pulp, in vain
The Floatation Rate of tungsten ore has been reduced to less than 10%, and fluorite Floatation Rate is between 75%~95%.It can thus be assumed that hydroxyl
Propyl group starch ether is smaller to fluorite inhibition, but has good rejection ability to scheelite.
White tungsten, the experiment of fluorite artificial mixed ore FLOTATION SEPARATION show, work as WO3During to ore deposit grade 3.10%, to ore deposit through once
FLOTATION SEPARATION, WO can be obtained3Grade and the rate of recovery are respectively 27.59%, 85.40% white tungsten fine ore；Work as WO3Give ore deposit grade
When 10.08%, one time FLOTATION SEPARATION can obtain WO3Grade and the rate of recovery are respectively 42.32%, 88.60% white tungsten fine ore；With
The increase to ore deposit grade, concentrate grade and the rate of recovery significantly improve；Illustrate that hydroxypropyl starch ether has well to scheelite
Selective depression ability, it is effective inhibitor that scheelite separates with fluorite.
(2) contrasted with other inhibitor, there is stable performance, be easy to make and addition, friendly environment, wide material sources, valency
The advantages that lattice are cheap, positive effect.The hydroxypropul starch ether inhibitor prepare primary raw material starch source in corn, rice,
The agricultural product such as sweet potato, belong to regenerated resources, inexhaustible and wide material sources, cheap, it is easy using residue
It is small in degraded, environmental pollution.
Brief description of the drawings
Fig. 1 is the flow chart of embodiment 5 in the present invention.
Embodiment
With reference to embodiment, the present invention is further illustrated, but is not limited to the limitation of embodiment.
Naturally dry after the fluorite of mine hand picking, scheelite minal are cleaned with distilled water, then with ceramic ball milling
Machine is levigate, and sieve takes Study of flotation of -74+38 μm of the conventional grade baking oven low temperature drying for embodiment.
Embodiment 1:
Float test is hung groove type floatation cell using the types of XFG II and carried out, and adds 2g minals toward flotation cell first, adds
35ml distilled water, size mixing 1min, to 7 and stirs 2min with HCl regulations pH values of pulp, then sequentially adds a certain amount of hydroxypropyl and form sediment
Powder ether inhibitor stirring 3min, enuatrol 60mg/L stirring 3min, then scrape bubble 4min again.After float test terminates, to foam
Product is filtered, dried, weighed, and chemically examines and calculate the rate of recovery.
Embodiment result of the test is as shown in table 1.
Suppression behavioral experiment result 1 (pH=7) of the hydroxypropyl starch ether dosage of table 1 to mineral
Embodiment 2:
Float test is hung groove type floatation cell using the types of XFG II and carried out, and adds 2g minals toward flotation cell first, adds
35ml distilled water, size mixing 1min, to 9 and stirs 2min with NaOH regulations pH values of pulp, then sequentially adds a certain amount of hydroxypropyl and form sediment
Powder ether inhibitor stirring 3min, enuatrol 60mg/L stirring 3min, then scrape bubble 4min again.After float test terminates, to foam
Product is filtered, dried, weighed, and chemically examines and calculate the rate of recovery.
Embodiment result of the test is as shown in table 2.
Suppression behavioral experiment result 2 (pH=9) of the hydroxypropyl starch ether of table 2 to mineral
Embodiment 3:
Float test is hung groove type floatation cell using the types of XFG II and carried out, and adds 2g minals toward flotation cell first, adds
35ml distilled water, size mixing 1min, to 12 and stirs 2min with HCl regulations pH values of pulp, then sequentially adds a certain amount of hydroxypropyl
Starch ether inhibitor stirring 3min, enuatrol 60mg/L stirring 3min, then scrape bubble 4min again.After float test terminates, to bubble
Foam product is filtered, dried, weighed, and chemically examines and calculate the rate of recovery.
Embodiment result of the test is as shown in table 3.
Suppression behavioral experiment result 3 (pH=12) of the hydroxypropyl starch ether of table 3 to mineral
Embodiment 4：
Float test is hung groove type floatation cell using the types of XFG II and carried out, first toward flotation cell adds 2g fluorites, white tungsten manually mixes
Ore deposit is closed, adds 35ml distilled water, size mixing 1min, to 9 and stirs 2min with NaOH regulations pH values of pulp, then sequentially adds hydroxypropyl
Base starch ether inhibitor 80mg/l stirrings 3min, enuatrol 60mg/L stirring 3min, then scrape bubble 4min, artificial mixed ore warp again
FLOTATION SEPARATION.After float test terminates, froth pulp is filtered, dried, weighed, chemically examines and calculate the rate of recovery.
Embodiment the results are shown in Table 4.
The scheelite of table 4 and fluorite artificial mixed ore reverse flotation separation test result
Embodiment 5：
Float test is carried out using the type sheet trough floatation machines of XFG II, and test specimen is -2mm raw ores, uses sample 1kg every time.
Raw ore is derived from Ganzhou mine, and raw ore multielement analysis and ore mineral relative amount are respectively such as table 5, table 6
It is shown.The ore deposit essential element is tungsten, lead, zinc, copper, sulphur, belongs to low grade white tungsten association polymetallic ore, main gangue mineral is firefly
Stone, quartz, silicate and aluminium silicate mineral.The scheelite is roughly ground to -0.15mm, corase grind product first and feeds shaking table progress
Tungsten copper lead zinc sulphur preconcentration, mine tailing caused by tabling directly abandons, and gained gravity treatment rough concentrate is thin through two sections of ball millings again
It is milled to -0.074mm and accounts for 60%；Secondary grinding product first through floatation desulphurization, desulfurization flotation using one thick one it is single-minded sweep, chats follows
Sequence returns；Desulfurization mine tailing carries out white tungsten flotation operation, white tungsten flotation swept using the thick essence two for suppressing white tungsten and floating gangue mineral,
The reverse floatation process flow that chats order returns, regime of agent and flotation flowsheet are as shown in Figure 1.Small-sized closed-circuit test obtains
WO3The white tungsten fine ore of grade 45.23%, the rate of recovery 75.26%, white tungsten fine ore multielement are shown in Table 7.
The raw ore multielement analysis (%) of table 5
| Element | WO3 | Cu | Pb | Zn | S | Fe | MgO | CaO | CaF2 | SiO2 | Al2O3 |
| Content | 0.21 | 0.050 | 0.27 | 0.33 | 1.90 | 3.80 | 6.50 | 13.09 | 11.55 | 32.80 | 8.35 |
The ore mineral relative amount (%) of table 6
| Mineral name | Scheelite | Fluorite | Magnetic iron ore | Zincblende | Galena | Chalcopyrite | Cassiterite | Bismuthine |
| Content | 0.27 | 15 | 3.0 | 0.5 | 0.25 | It is micro- | It is micro- | It is micro- |
| Mineral name | Quartz | The tremolite | Talcum | Phlogopite | Muscovite | Biotite | Garnet | Feldspar |
| Content | 30 | 13 | 10 | 10 | 6.0 | 5 | 5 | 1.0 |
| Mineral name | Wolframite | Calcite | Mispickel | Pyrite | Native bismuth | Sericite | ||
| Content | It is micro- | It is micro- | It is micro- | It is micro- | It is micro- | It is micro- |
White tungsten essence multielement analysis (%) obtained by 7 small-sized closed-circuit test of table
Claims (2)
1. hydroxypropyl starch ether is applied in Scheelite Flotation, it is characterized in that：Scheelite Flotation can be suppressed, make fluorite, calcite,
Manosil AS salt mine separates with scheelite reverse flotation.
2. a kind of method for floating of scheelite, it is characterized in that, comprise the following steps：
1. by white tungsten crushing raw ore, fine grinding, classification, mog is that -0.15mm accounts for 60%~80%, and ore milling product uses sieve aperture
0.15mm sieve is classified, and oversize is returned and regrinded, and undersize enters sorting operation；
2. the undersize of step 1. gained is subjected to white tungsten preenrichment using shaking table, spiral chute, centrifugal ore separator；Gravity treatment institute
Obtain light product directly to abandon as mine tailing, weight product is white tungsten rough concentrate, into follow-up white selected section of tungsten；
3. by step, 2. gained scheelite rough concentrate is finely ground to after -0.074mm accounts for 60%~85%, and it is selected to carry out white tungsten, white tungsten
It is selected to carry out floatation desulphurization first；White tungsten floatation desulphurization is returned using one roughing primary cleaning once purging selection, chats order
Technological process, desulfurization flotation are carried out under the conditions of ore pulp nature pH；Using xanthate, black powder as collecting agent, roughing collector dosage
10g/t~80g/t, action time 1min~3min, desulfurization scan collector dosage and halve i.e. 5g/t~40g/t, action time
1min~3min；Using No. 2 oil as foaming agent, roughing dosage 10g/t~40g/t, action time 1min；Gained froth pulp is sulphur
Change ore deposit rough concentrate separately individually to handle, bottom land product carries out white tungsten reverse flotation enrichment；
4. by step, 3. the desulfurization flotation tailing of gained carries out white tungsten reverse flotation and is enriched with, and white tungsten reverse flotation enrichment uses one roughing
The technological process that selected once purging selection, chats order return twice；White tungsten roughing adjusts pH values of pulp to 7 with sodium carbonate or sodium hydroxide
~12,1min~3min is acted on, then adds inhibitor hydroxypropyl starch ether 40g/t~200g/t, action time 3min successively
~5min, enuatrol or 731,733 white tungsten flotation collector 200g/t~800g/t, action time 1min~3min；Scan and add
Inhibiting hydroxypropyl starch ether 20g/t~100g/t, action time 1min~3min；Selected 1, selected 2 add collecting respectively
Agent 60g/t~200g/t, 20g/t~60g/t, action time 1min~3min；Finally reinflated to scrape bubble, froth pulp is tail
Ore deposit, bottom land product are white tungsten fine ore.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570081B (en) * | 2020-04-28 | 2021-02-26 | 长沙矿山研究院有限责任公司 | Method for utilizing high-calcite type low-grade scheelite fluorite paragenic ore |
| CN115625045A (en) * | 2022-10-19 | 2023-01-20 | 赣州有色冶金研究所有限公司 | Sorting method of vein dip-dyeing type black-white tungsten paragenetic ore |
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| CN106861891A (en) * | 2017-01-21 | 2017-06-20 | 宁化行洛坑钨矿有限公司 | A kind of method for separating of low-grade black and white tungsten ore |
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| CN115625045A (en) * | 2022-10-19 | 2023-01-20 | 赣州有色冶金研究所有限公司 | Sorting method of vein dip-dyeing type black-white tungsten paragenetic ore |
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