CN103831173B - A kind of improve the mine tailing middle rare earth rate of recovery and the process of fluorite grade - Google Patents
A kind of improve the mine tailing middle rare earth rate of recovery and the process of fluorite grade Download PDFInfo
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- CN103831173B CN103831173B CN201410097246.5A CN201410097246A CN103831173B CN 103831173 B CN103831173 B CN 103831173B CN 201410097246 A CN201410097246 A CN 201410097246A CN 103831173 B CN103831173 B CN 103831173B
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Abstract
The invention discloses and a kind of improve the mine tailing middle rare earth rate of recovery and the process of fluorite grade, comprise the following steps: 1) mine tailing raw material is roughly selected through one-level, multistage scan with multistage selected after obtain mix-froth and mixing mine tailing；2) by described mix-froth isolated total rare earth (TRE) enriched substance and total fluorite enriched substance；3) described total rare earth (TRE) enriched substance is roughly selected through one-level, multistage scan with multistage selected after obtain rare earth ore concentrate；4) described total fluorite enriched substance is roughly selected through one-level, multistage scan with multistage selected after obtain fluorite concentrate.By the process of the present invention, the rate of recovery of mine tailing middle rare earth and the grade of fluorite can be improved.
Description
Technical field
The present invention relates to metal ore dressing field, particularly relate to a kind of raising mine tailing middle rare earth rate of recovery and firefly
The process of stone grade.
Background technology
Baiyuneboite containing abundant iron, rare earth, niobium and fluorite etc., is the rare mineral resources in the world,
But owing to technique of preparing is not broken through, only recycled in producing at present about 70% iron and
The rare earth of about 10%, remaining is all drained in mine tailing, and the mine tailing amount stored up is very big, not only wastes
Mineral resources, and environment is brought impact.
" the baiyuneboite smelting process " write by Baogang in nineteen ninety-five summarizes the most next right
This mineral intergrowth carries out the achievement selecting smelting to study, particularly ore-dressing technique achievement in research, uses in terms of ore dressing
Weak magnetic strength magnetic flotation combined mineral dressing technology, iron concentrate grade is more than 60%, and the rate of recovery is more than 70%；
Rare earth ore concentrate grade also can reach more than 60%, but the rate of recovery is the highest, also has minority at present from raw ore
Produce rare earth ore concentrate factory, rare earth ore concentrate grade less than 50%, only about 45%, the rate of recovery is only
It is 40～50%.Present rare earth ore concentrate is mostly production from the mine tailing of this mineral intergrowth, is strong
The chats that magnetic separation iron is later, it may also be said to be the mine tailing after selecting iron, the only content of rare earth of strong magnetic chats
Higher, individually branch away for selecting the raw material of rare earth, smart through mineral processing production rare earth out with these raw materials
Ore deposit, grade only 50%, the rate of recovery the most only about 60%.If producing the grade rare earth ore concentrate more than 60%,
Then the rate of recovery is the lowest, therefore to factory's efficiency problem, does not the most produce dilute more than 60% of grade
Soil concentrate.
The ore dressing of fluorite have also been made long research work, and " baiyuneboite smelting process " describes
High intensity magnetic separation mine tailing carries out reclaiming the ore dressing small-scale test of fluorite, and result of the test is fluorite grade 85.14%, returns
Yield only has about 30%.Ore dressing plant in 1992 provides reclaims the small-sized of fluorite from strong magnetic rougher tailings
Test report, first selects grade 81.20% from mine tailing, the fluorite rough concentrate of the rate of recovery 50.18%, then
Being milled to-320 mesh and account for 95%, then be 95.82% through four selected acquisition fluorite concentrate grades, the rate of recovery is
The fluorite concentrate of 25.85%.
Summary of the invention
It is an object of the invention to provide and a kind of improve the mine tailing middle rare earth rate of recovery and the technique side of fluorite grade
Method, by the present invention can obtain rare earth ore concentrate grade containing rare earth oxide (rare earth oxides,
REO) more than 60%, its operation recovery reaches more than 90%, and grade is the fluorite of more than 97%
Concentrate.
Technical scheme is specific as follows:
A kind of improve the mine tailing middle rare earth rate of recovery and the process of fluorite grade, comprise the following steps:
1) mine tailing raw material is roughly selected through one-level, multistage scan with multistage selected after obtain mix-froth and mixed
Close mine tailing；Mine tailing raw material obtains rougher concentration and rougher tailings through roughly selecting, and carries out rougher tailings scanning point
Separate out mixing mine tailing, carry out rougher concentration selected isolating mix-froth；Multistage scan selected with multistage
In the middling recurrence upper level that obtains of every one-level；
2) by described mix-froth isolated total rare earth (TRE) enriched substance and total fluorite enriched substance；
3) described total rare earth (TRE) enriched substance is roughly selected through one-level, multistage scan with multistage selected after obtain rare earth
Concentrate；Described total rare earth (TRE) enriched substance obtains roughly selecting rare earth ore concentrate and roughly selecting rare-earth tailing through roughly selecting, and will roughly select
Rare-earth tailing is scanned, and will roughly select rare earth ore concentrate and carry out selected isolating rare earth ore concentrate；Multistage scan and
Multi-level oil chooses the middling recurrence upper level that every one-level obtains；
4) described total fluorite enriched substance is roughly selected through one-level, multistage scan with multistage selected after obtain fluorite
Concentrate；Described total fluorite enriched substance obtains roughly selecting fluorite concentrate and roughly selecting fluorite mine tailing through roughly selecting, and will roughly select
Fluorite mine tailing carries out scanning isolating true tailings, will roughly select fluorite concentrate carry out selected isolate fluorite essence
Ore deposit；Multistage scan the middling recurrence upper level choosing every one-level to obtain with multi-level oil.
Further: in step 1), pH is 10～11, temperature is 25 DEG C～30 DEG C, including one roughing,
Secondary is scanned selected with four times；In roughly selecting, every 250g mine tailing raw material adds Na2CO329～32ml,
Waterglass 18～21ml, collecting agent 49～52ml, obtain rougher concentration and rougher tailings；By rougher tailings
Entering after ore grinding and scan, the first order scans middle addition 9～12ml waterglass and 18～21ml collecting agents, the
Scan addition 9～12ml collecting agents for two grades；Carrying out selected by rougher concentration, the first order is selected to the fourth stage
13～16ml, 9～12ml, 9～12ml, 4～7ml waterglass it is separately added in selected.
Further: step 2) described in after mix-froth reagent removal, obtain the first rareearth enriching material and first
Fluorite enriched substance；First fluorite enriched substance carries out washing concentrate, obtain the second rareearth enriching material and second
Fluorite enriched substance；When in described first rareearth enriching material, iron content is more than 3%, by described first rare earth
Enriched substance deferrization, obtains the 3rd rareearth enriching material；
Step 3) is roughly selected after rare-earth tailing is scanned and isolate the 3rd fluorite enriched substance；Second fluorite is rich
Collection thing and the 3rd fluorite enriched substance are as total fluorite enriched substance；When iron content in described first rareearth enriching material
During ＞ 3%, using the second rareearth enriching material and the 3rd rareearth enriching material as total rare earth (TRE) enriched substance；When first is dilute
In soil enriched substance during iron content≤3%, using the first rareearth enriching material and the 3rd rareearth enriching material as total rare earth (TRE)
Enriched substance.
Further: step 2) described in reagent removal include six times selected, front triple cleaning respectively adds 15ml water glass
Glass, rear triple cleaning respectively adds 10ml waterglass, and the every grade of dry weight that feeds time selected is 250 grams.
Further: step 3) includes that one roughing, secondary are scanned and triple cleaning, wherein, roughly selects
Temperature is 38～45 DEG C, scans and is 33～37 DEG C with selected temperature；In roughly selecting, add waterglass
10～13ml, lignin 2～5ml, collecting agent 16～19ml, foaming agent is No. 2 oil, and addition is 10ml
Needle tubing 3～4, obtain roughly selecting rare earth ore concentrate and roughly selecting rare-earth tailing；Rare-earth tailing will be roughly selected scan,
The first order scans middle addition 5～8ml waterglass and 13～16ml collecting agents, and addition 4～7ml is scanned in the second level
Waterglass and 18～20ml collecting agents；Rare earth ore concentrate will be roughly selected and carry out selected, the first order selected addition water glass
Glass 5～8ml, lignin 2～5ml and collecting agent 14～16ml；The second level is selected and the third level selected in all
Add waterglass 5～8ml, lignin 2～5ml and collecting agent 11～15ml.
Further: in step 4), pH is 11～12, temperature is room temperature, including one roughing, secondary
Scan selected with 5～8 times；In roughly selecting, add Na2CO34～6ml, waterglass 13～16ml, oleic acid
8～11ml, obtain roughly selecting fluorite concentrate and roughly selecting fluorite mine tailing；Fluorite mine tailing will be roughly selected scan, the
One-level scans middle addition 4～6ml waterglass and 10～12ml oleic acid, and addition 8～11ml oil is scanned in the second level
Acid；Fluorite concentrate will be roughly selected and carry out selected, the first order selected to the fourth stage selected in add 14～17ml water glass
Glass, adds 8 during selected to the 8th grade of level V is selected～10ml waterglass and 3～5ml oleic acid.
Further: when in total fluorite enriched substance, iron content is more than 3%, Surface field intensity be 0.2T～
Deferrization is carried out under conditions of 0.8T.
Further: described waterglass and Na2CO3Solute mass fraction be 5%；Described collecting agent and
The Solute mass fraction of described oleic acid is 2%.
Further: when in described fluorite concentrate iron content more than 1% time, Surface field intensity be 0.6T～
Carry out under conditions of 1.0T dropping iron.
Further: when in described fluorite concentrate, calcium oxide content is more than 1%, it to be divided through Solute mass
Number is the chlorohydric acid pickling of 5%, and solid-liquid volume ratio is 1:10, and temperature is 60～90 DEG C, and the time is 10 minutes
Above, the fluorite concentrate that grade is more than 97% is obtained.
Beneficial effects of the present invention:
1, with Bayan Obo mine tailing or therewith mineral composition similar containing rare earth, thorium, iron, fluorite and niobium
It is raw material in ore, uses flotation, magnetic separation to improve a recovering rare earth and processing of fluorspar ores technique, each
Individual separation operation all uses one roughing, multistage scans and multistage selected closed circuit tandem ore-dressing technique mode,
Each two kinds of product of separation operation output concentrate and tailings, does not has chats product, thus improves rare earth
The rate of recovery and fluorite grade.
2, the present invention is to be changed the traditional handicraft of recovering rare earth and fluorite from Bayan Obo mine tailing
Entering, each ore-dressing practice in this new technology have employed tandem closed circuit ore dressing mode, and its form is to pass through
Roughly select, scan and the selected closed circuit form returning upper level step by step, to obtain high-grade and high-recovery
Concentrate.
3, the present invention uses one-level to roughly select, multistage scans and multistage selected tandem closed circuit ore dressing mode, from
Grade is in the rare earths material (rareearth enriching material) of about 15%, it is thus achieved that rare earth ore concentrate grade contain
More than REO60%, operation recovery more than 90%, this Joint Index has exceeded grinds from this mineral intergrowth ore dressing
Study carefully all history indexs producing rare earth ore concentrate；Adjust progression and may also reach up higher grade and the rate of recovery,
And medicament used all tradition medicament.
4, utilize production technology of the present invention, produce the fluorite concentrate that grade is more than 97%: control firefly
Iron in stone raw material and content of rare earth are below 2%, the lowest more good；When the fluorite concentrate sub-elected reaches not
During to specification requirement, carry out pickling with watery hydrochloric acid；When in fluorite concentrate, iron content is more than 1%, it is also possible to
Strong magnetic fall iron, makes fluorite concentrate reach higher grade.
Accompanying drawing explanation
Fig. 1 is the flow chart of bulk flotation technique in the present invention；
Fig. 2 is selected reagent removal process chart in the present invention；
Fig. 3 is the separation process figure of mix-froth in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The Integral Thought of the present invention is: the first step is grouped by bulk flotation, is divided into and with rare earth, fluorite is
Main froth pulp and based on iron, the product from failing of niobium.By one roughing, repeatedly scan and repeatedly
Selected, the rate of recovery of mix-froth middle rare earth and fluorite is more than 95%, and mine tailing middle rare earth content is little
In 1%, Oil repellent is less than 1.5%.When mix-froth is carried out follow-up flotation, magnetic separation, use once
Roughly selecting, multistage scan and multistage selected ore dressing mode, the chats of every one-level returns upper level step by step, dilute
Soil concentrate sorting uses one-level to roughly select, scan for twice, triple cleaning, fluorite sorting use one roughing,
Secondary scans, five times to eight times selected, thus improve rare earth yield and fluorite grade.
Scan and can count with separation according to concentrate and tailings index request with selected progression
Calculating, it is different and change with technical indicator for scanning with selected progression, introduction countercurrent extraction theory (" rare earth "
(first volume) countercurrent extraction theory) should be in ore dressing:
In formula (1), n i.e. scans progression, and the m in formula (2) represents selected progression,Represent segregative line
Number, in formula, a, b are purification, a and b is calculated by following formula:
In formulaRepresent the easy ore dressing thing A and refractory minerals B purity (percentage) in concentrate；PA、
PBRepresent the easy ore dressing thing A and refractory minerals B purity (percentage) in mine tailing；fA、fBRepresent
Easy ore dressing thing A and the content of refractory minerals B in raw material.
In the embodiment of the present invention, agents useful for same is preferred: waterglass and Na2CO3Solute mass fraction equal
It is 5%；The Solute mass fraction of collecting agent (GE-28) is 2%；The Solute mass fraction of oleic acid is 2%；
The Solute mass fraction of lignin is 1%.Roughly selecting charging 200 grams, ball mill is 100g mill 10 every time
Minute.
Bulk flotation condition:
Roughly select: raw material 250g；Na2CO35% (W), 30ml；Waterglass 5% (W), 20ml；
Collecting agent (GE-28) 2% (W) 50ml；PH10～11；Temperature 25 DEG C～30 DEG C；
Scanning: roughly select rear mine tailing and carry out ore grinding, 100g grinds 10 minutes, and granularity reaches-200 mesh, and 96.8%.
Sweep: waterglass, 10ml；GE-28,20ml；
Two sweep: only add GE-28,10ml；
Selected: an essence, 15ml waterglass；It is not added with GE-28；
Two essences, three essences respectively add 10ml waterglass, are not added with GE-28；
Four finishing 5ml waterglass.
I.e. can reach balance through 20 times～30 closed-circuit tests, reach the result in embodiment, foam and
The productivity of mine tailing, grade and the rate of recovery.
Embodiment 1
In the present embodiment, the process improving the mine tailing middle rare earth rate of recovery and fluorite grade includes following step
Rapid:
1) bulk flotation
As it is shown in figure 1, be the flow chart of bulk flotation technique；In bulk flotation technique, pH is 10～11,
Temperature is 25 DEG C.Bulk flotation includes that one roughing, secondary are scanned selected with four times.
Being more than 7.00% by REO grade, fluorite grade is the Bayan Obo mine tailing 250g of more than 11.5%
Roughly select, add Na2CO330ml, waterglass 20ml, collecting agent 50ml, obtain rougher concentration and
Rougher tailings, it is selected that rougher concentration proceeds the first order.
Rougher tailings is carried out ore grinding, and granularity reaches-200 mesh and accounts for more than 96.8%.
Mine tailing after ore grinding is carried out the first order scan, add waterglass 10ml, collecting agent 20ml,
Scanning mine tailing to first order scavenger concentrate and the first order, first order scavenger concentrate returns and roughly selects next time.
The first order is scanned mine tailing carry out the second level and scan, add collecting agent 10ml, the second level must be arrived and scan
Concentrate and mixing mine tailing, second level scavenger concentrate returns ore grinding next time, and mixing mine tailing is discharged to Tailings Dam.
Rougher concentration is carried out the first order selected, add 15ml waterglass, obtain the selected concentrate of the first order
With first order cleaner tailings, first order cleaner tailings returns and roughly selects next time.
Selected for first order concentrate is carried out the second level selected, add 10ml waterglass, obtain second level essence
Concentrate selection and second level cleaner tailings, it is selected that second level cleaner tailings returns the first order.
Selected for second level concentrate is carried out the third level selected, add 10ml waterglass, obtain third level essence
Concentrate selection and third level cleaner tailings, it is selected that third level cleaner tailings returns to the second level.
Selected for third level concentrate is carried out the fourth stage selected, add 5ml waterglass, obtain mix-froth and
Fourth stage cleaner tailings, it is selected that fourth stage cleaner tailings returns the third level, and mix-froth proceeds to separate
Technique.
Through i.e. can reach balance through 20 closed-circuit tests, wherein, in the mix-froth obtained, mixing
The productivity of foam is 63.06%, and the grade of REO and fluorite is respectively 11.21%, 16.90%, to rare earth
The operation recovery of concentrate and fluorite concentrate is respectively 96.32%, 96.54%；In the mixing mine tailing obtained,
The productivity of mixing mine tailing is 36.94%, and the grade of REO and fluorite is respectively 0.73%, 1.02%, to dilute
The operation recovery of soil concentrate and fluorite concentrate is respectively 3.68%, 3.46%.
2) separation of mix-froth
As in figure 2 it is shown, be selected reagent removal process chart in the present invention.Mix-froth is carried out reagent removal,
Obtain the first rareearth enriching material and the first fluorite enriched substance.Reagent removal uses machinery reagent removal to tie mutually with washing reagent removal
The mode closed, i.e. the selected reagent removal of flotation, through six selected (or thick five essences) reagent removals of foam,
To ore pulp product, concentrate (precipitating after adding water, remove supernatant concentration) through washing and obtain the first rare earth richness
Collection thing, and another froth pulp, obtain the first fluorite enriched substance through washing reagent removal.Every grade adds not
With the waterglass of quantity, front triple cleaning respectively adds 15ml waterglass, and rear triple cleaning respectively adds 10ml water glass
Glass, the every grade of dry weight that feeds time selected is 250 grams.Wherein, the productivity of the first rareearth enriching material is 70.33%
(productivity to former total mine tailing is 44.3%), the grade of REO is 13.00%, and its operation recovery is
82%；The productivity of the first fluorite enriched substance be 29.67%(be 18.74% to the productivity of former total mine tailing), firefly
The grade of stone is 6.80%, and its operation recovery is 18%.
As it is shown on figure 3, be the separation process figure of mix-froth, carry out washing dense by the first fluorite enriched substance
Contracting (precipitates after adding water, remove supernatant concentration), obtains the second rareearth enriching material and the enrichment of the second fluorite
Thing, wherein, the productivity of the second rareearth enriching material be 43.8%(be 8.3% to the productivity of former total mine tailing),
The grade of REO is 14.9%, and its operation recovery is 90.6%；The productivity of the second fluorite enriched substance is
56.2%(is 10.4% to the productivity of former total mine tailing), the grade of fluorite is 1.13%, its operation recovery
It is 9.40%.
When iron content is more than 3% in the first rareearth enriching material, the first rareearth enriching material is carried out strong magnetic and takes off
Iron, Surface field intensity is below 1T, obtains the 3rd rareearth enriching material and iron enriched substance, iron enriched substance
Return mixing is roughly selected.Wherein, the productivity of the 3rd rareearth enriching material is the 52.4%(productivity to former total mine tailing
It is 33.1%), the grade of REO is 13.26%, and its operation recovery is 84%；The productivity of iron enriched substance
It is 11.2% for 17.9%(to the productivity of former total mine tailing), the grade of REO is 7.35%, and its operation is returned
Yield is 16.0%.
3) flotation of rareearth enriching material
Second rareearth enriching material and the 3rd rareearth enriching material are carried out flotation (when as total rare earth (TRE) enriched substance
In one rareearth enriching material during iron content≤3%, using the first rareearth enriching material and the 3rd rareearth enriching material as always
Rareearth enriching material), the flotation of rareearth enriching material includes that one roughing, secondary are scanned and triple cleaning.
Total rare earth (TRE) enriched substance being roughly selected, total rare earth (TRE) enriched substance is 41.4% to the productivity of former total mine tailing,
The grade of REO is 14.57%.Add waterglass 12ml, lignin 3ml, collecting agent 18ml, bubble
Agent is No. 2 oil, and addition is 10ml needle tubing 3～4, and controlling to roughly select temperature is 40 DEG C, is roughly selected
Rare earth ore concentrate and roughly select rare-earth tailing, roughly selecting rare earth ore concentrate, to proceed the first order selected.
To roughly select rare-earth tailing to carry out the first order and scan, controlling to scan temperature is 35 DEG C, adds waterglass
6ml, collecting agent 15ml, obtain the first order and scan rare earth ore concentrate and the first order scans rare-earth tailing, and first
Level is scanned rare earth ore concentrate return and is roughly selected.
The first order being scanned rare-earth tailing carry out the second level and scan, controlling to scan temperature is 35 DEG C, adds water
Glass 6ml, collecting agent 20ml, must arrive the second level and scan rare earth ore concentrate and the 3rd fluorite enriched substance, and second
Level is scanned the rare earth ore concentrate return first order and is scanned.The productivity of the 3rd fluorite enriched substance be 78.30%(to former always
The productivity of mine tailing is 32.42%), the grade of fluorite is 1.79%, and its operation recovery is 9.61%.
To roughly select rare earth ore concentrate and carry out selected, controlling selected temperature is 35 DEG C, and wherein, the first order is selected to be added
Enter waterglass 6ml, lignin 3ml and collecting agent 15ml；The second level is selected and the third level selected in all add
Enter waterglass 6ml, lignin 3ml and collecting agent 13ml；Every one-level selected all outputs rare earth ore concentrate and dilute
Soil mine tailing, rare-earth tailing all returns upper level flotation, and rare earth ore concentrate is as the raw material of next stage.
After 20 times reach balance, obtaining result of the test, the rare earth ore concentrate productivity finally given is 21.7%
(productivity to former total mine tailing is 8.98%), the grade of REO is 60.72%, and its operation recovery is
90.39%。
4) flotation of fluorite enriched substance
Second fluorite enriched substance and the 3rd fluorite enriched substance are carried out flotation, total firefly as total fluorite enriched substance
The amount of stone enriched substance needs more than 150g, controls the iron in total fluorite enriched substance and content of rare earth below 2%,
Flotation temperature is room temperature, and PH is 11～12.The flotation of fluorite enriched substance includes that one roughing, secondary are swept
Choosing is selected with 8 times.
When in total fluorite enriched substance, iron content is more than 3%, at the bar that Surface field intensity is 0.2T～0.8T
Deferrization is carried out under part.
Total fluorite enriched substance being roughly selected, total fluorite enriched substance is 42.82% to the productivity of former total mine tailing,
The grade of fluorite is 27.5%.Every 150g adds sodium carbonate 5ml, waterglass 15ml, oleic acid 10ml,
Obtaining roughly selecting fluorite concentrate and roughly select fluorite mine tailing, roughly selecting fluorite concentrate, to proceed the first order selected.
Fluorite mine tailing will be roughly selected carry out the first order and scan, add 5ml waterglass, 10ml oleic acid, obtain the
One-level scans fluorite concentrate and the first order scans fluorite mine tailing, and the first order is scanned fluorite concentrate return and roughly selected.
The first order is scanned fluorite mine tailing carry out the second level and scan, add 10ml oleic acid, obtain the second level
Scanning fluorite concentrate and true tailings, the second level is scanned the fluorite concentrate return first order and is scanned.True tailings
Productivity be 47%, detection content of fluoride ion be 4.95%, the grade of fluorite is 10.16%, and its operation is returned
Yield is 8.61%.
Fluorite concentrate will be roughly selected and carry out selected, wherein the first order selected to the fourth stage selected in add 15ml water
Glass, adds 10ml waterglass and 5ml oleic acid during selected to the 8th grade of level V is selected, and every one-level is selected
All output fluorite concentrate and fluorite mine tailings, fluorite mine tailing all returns upper level flotation, fluorite concentrate as under
The raw material of one-level.The productivity of the fluorite concentrate finally given is that the productivity of former total mine tailing is by 53%(
22.7%), detection content of fluoride ion is 46.55%, and the grade of fluorite is 95.58%, its operation recovery
It is 91.39%.
When in the fluorite concentrate finally given, when iron content is more than 1%, Surface field intensity be 0.6T～
Carry out under conditions of 1.0T dropping iron.
When in the fluorite concentrate finally given, calcium oxide content is more than 1%, by it through Solute mass fraction
Being the chlorohydric acid pickling of 5%, solid-liquid volume ratio is 1:10, temperature 60～90 DEG C, 10 minutes time, and amount is big
Time the proper extension time, finally give high-grade fluorite concentrate.The productivity of high-grade fluorite concentrate is
49.80%(is 21.6% to the productivity of former total mine tailing), detection content of fluoride ion is 47.35%, REO
It is respectively 0.61%, 97.22%, to rare earth ore concentrate and the operation recovery of fluorite concentrate with the grade of fluorite
It is respectively 2.40%, 86.82%.
Embodiment 2
In the present embodiment, the process improving the mine tailing middle rare earth rate of recovery and fluorite grade includes following step
Rapid:
1) bulk flotation
As it is shown in figure 1, for the flow chart of bulk flotation technique, in bulk flotation technique, pH be 10～
11, temperature is 30 DEG C.Bulk flotation includes that one roughing, secondary are scanned selected with four times.
Being more than 7.00% by REO grade, fluorite grade is the Bayan Obo mine tailing 250g of more than 11.5%
Roughly select, add Na while stirring2CO332ml, waterglass 18ml, collecting agent 52ml, obtain thick
Concentrate selection and rougher tailings, it is selected that rougher concentration proceeds the first order.
Rougher tailings is carried out ore grinding, and granularity reaches-200 mesh and accounts for more than 96.8%.
Mine tailing after ore grinding is carried out the first order scan, add waterglass 9ml, collecting agent 21ml, obtain
First order scavenger concentrate and the first order scan mine tailing, and first order scavenger concentrate returns and roughly selects next time.
The first order is scanned mine tailing carry out the second level and scan, add collecting agent 9ml, the second level must be arrived and scan
Concentrate and mixing mine tailing, second level scavenger concentrate returns ore grinding next time, and mixing mine tailing is discharged to Tailings Dam.
Rougher concentration is carried out the first order selected, add 13ml waterglass, obtain the selected concentrate of the first order
With first order cleaner tailings, first order cleaner tailings returns and roughly selects next time.
Selected for first order concentrate is carried out the second level selected, add 12ml waterglass, obtain second level essence
Concentrate selection and second level cleaner tailings, it is selected that second level cleaner tailings returns the first order.
Selected for second level concentrate is carried out the third level selected, add 12ml waterglass, obtain third level essence
Concentrate selection and third level cleaner tailings, it is selected that third level cleaner tailings returns to the second level.
Selected for third level concentrate is carried out the fourth stage selected, add 4ml waterglass, obtain mix-froth and
Fourth stage cleaner tailings, it is selected that fourth stage cleaner tailings returns the third level, and mix-froth proceeds to separate
Technique.
Through i.e. can reach balance through 25 closed-circuit tests, wherein, in the mix-froth obtained, mixing
The productivity of foam is 63.06%, and the grade of REO and fluorite is respectively 11.21%, 16.90%, to rare earth
The operation recovery of concentrate and fluorite concentrate is respectively 96.32%, 96.54%；In the mixing mine tailing obtained,
The productivity of mixing mine tailing is 36.94%, and the grade of REO and fluorite is respectively 0.73%, 1.02%, to dilute
The operation recovery of soil concentrate and fluorite concentrate is respectively 3.68%, 3.46%.
2) separation of mix-froth
As in figure 2 it is shown, be selected reagent removal process chart in the present invention.Mix-froth is carried out reagent removal,
Obtain the first rareearth enriching material and the first fluorite enriched substance.Reagent removal uses machinery reagent removal to tie mutually with washing reagent removal
The mode closed, i.e. the selected reagent removal of flotation, through six selected (or thick five essences) reagent removals of foam,
To ore pulp product, concentrate (precipitating after adding water, remove supernatant concentration) through washing and obtain the first rare earth richness
Collection thing, and another froth pulp, obtain the first fluorite enriched substance through washing reagent removal.Every grade adds not
With the waterglass of quantity, front triple cleaning respectively adds 15ml waterglass, and rear triple cleaning respectively adds 10ml water glass
Glass, the every grade of dry weight that feeds time selected is 250 grams.Wherein, the productivity of the first rareearth enriching material is 70.33%
(productivity to former total mine tailing is 44.3%), the grade of REO is 13.00%, and its operation recovery is
82%；The productivity of the first fluorite enriched substance be 29.67%(be 18.74% to the productivity of former total mine tailing), firefly
The grade of stone is 6.80%, and its operation recovery is 18%.
As it is shown on figure 3, be the separation process figure of mix-froth.Carry out washing dense by the first fluorite enriched substance
Contracting (precipitates after adding water, remove supernatant concentration), obtains the second rareearth enriching material and the enrichment of the second fluorite
Thing, wherein, the productivity of the second rareearth enriching material be 43.8%(be 8.3% to the productivity of former total mine tailing),
The grade of REO is 14.9%, and its operation recovery is 90.6%；The productivity of the second fluorite enriched substance is
56.2%(is 10.4% to the productivity of former total mine tailing), the grade of fluorite is 1.13%, its operation recovery
It is 9.40%.
When iron content is more than 3% in the first rareearth enriching material, the first rareearth enriching material is carried out strong magnetic and takes off
Iron, Surface field intensity is below 1T, obtains the 3rd rareearth enriching material and iron enriched substance, iron enriched substance
Return mixing is roughly selected.Wherein, the productivity of the 3rd rareearth enriching material is the 52.4%(productivity to former total mine tailing
It is 33.1%), the grade of REO is 13.26%, and its operation recovery is 84%；The productivity of iron enriched substance
It is 11.2% for 17.9%(to the productivity of former total mine tailing), the grade of REO is 7.35%, and its operation is returned
Yield is 16.0%.
3) flotation of rareearth enriching material
Second rareearth enriching material and the 3rd rareearth enriching material are carried out flotation (when as total rare earth (TRE) enriched substance
In one rareearth enriching material during iron content≤3%, using the first rareearth enriching material and the 3rd rareearth enriching material as always
Rareearth enriching material), the flotation of rareearth enriching material includes that one roughing, secondary are scanned and triple cleaning.
Total rare earth (TRE) enriched substance being roughly selected, total rare earth (TRE) enriched substance is 41.4% to the productivity of former total mine tailing,
The grade of REO is 14.57%.Add waterglass 13ml, lignin 2ml, collecting agent 19ml, bubble
Agent is No. 2 oil, and addition is 10ml needle tubing 3～4, and controlling to roughly select temperature is 45 DEG C, is roughly selected
Rare earth ore concentrate and roughly select rare-earth tailing, roughly selecting rare earth ore concentrate, to proceed the first order selected.
To roughly select rare-earth tailing to carry out the first order and scan, controlling to scan temperature is 33 DEG C, adds waterglass
5ml, collecting agent 16ml, obtain the first order and scan rare earth ore concentrate and the first order scans rare-earth tailing, and first
Level is scanned rare earth ore concentrate return and is roughly selected.
The first order being scanned rare-earth tailing carry out the second level and scan, controlling to scan temperature is 33 DEG C, adds water
Glass 7ml, collecting agent 18ml, must arrive the second level and scan rare earth ore concentrate and the 3rd fluorite enriched substance, and second
Level is scanned the rare earth ore concentrate return first order and is scanned.The productivity of the 3rd fluorite enriched substance be 78.30%(to former always
The productivity of mine tailing is 32.42%), the grade of fluorite is 1.79%, and its operation recovery is 9.61%.
To roughly select rare earth ore concentrate and carry out selected, controlling selected temperature is 33 DEG C, and wherein, the first order is selected to be added
Enter waterglass 5ml, lignin 5ml and collecting agent 16ml；The second level is selected and the third level selected in all add
Enter waterglass 5ml, lignin 2ml and collecting agent 11ml；Every one-level selected all outputs rare earth ore concentrate and dilute
Soil mine tailing, rare-earth tailing all returns upper level flotation, and rare earth ore concentrate is as the raw material of next stage.
After 10 times reach balance, obtaining result of the test, the rare earth ore concentrate productivity finally given is 21.7%
(productivity to former total mine tailing is 8.98%), the grade of REO is 60.72%, and its operation recovery is
90.39%。
4) flotation of fluorite enriched substance
Second fluorite enriched substance and the 3rd fluorite enriched substance are carried out flotation, total firefly as total fluorite enriched substance
The amount of stone enriched substance needs more than 150g, controls the iron in total fluorite enriched substance and content of rare earth below 2%,
Flotation temperature is room temperature, and PH is 11～12.The flotation of fluorite enriched substance includes that one roughing, secondary are swept
Choosing is selected with 6 times.
When in total fluorite enriched substance, iron content is more than 3%, at the bar that Surface field intensity is 0.2T～0.8T
Deferrization is carried out under part.
Total fluorite enriched substance being roughly selected, total fluorite enriched substance is 42.82% to the productivity of former total mine tailing,
The grade of fluorite is 27.5%.Every 150g adds sodium carbonate 4ml, waterglass 16ml, oleic acid 8ml,
To roughly selecting fluorite concentrate and roughly select fluorite mine tailing, roughly selecting fluorite concentrate, to proceed the first order selected.
Fluorite mine tailing will be roughly selected carry out the first order and scan, add 6ml waterglass, 12ml oleic acid, obtain the
One-level scans fluorite concentrate and the first order scans fluorite mine tailing, and the first order is scanned fluorite concentrate return and roughly selected.
The first order is scanned fluorite mine tailing carry out the second level and scan, add 8ml oleic acid, the second level must be arrived and sweep
Selecting fluorite concentrate and true tailings, the second level is scanned the fluorite concentrate return first order and is scanned.True tailings
Productivity is 47%, and detection content of fluoride ion is 4.95%, and the grade of fluorite is 10.16%, and its operation is reclaimed
Rate is 8.61%.
Fluorite concentrate will be roughly selected and carry out selected, wherein the first order selected to the fourth stage selected in add 14ml water
Glass, adds 8ml waterglass and 3ml oleic acid during selected to the 6th grade of level V is selected, and every one-level is selected all
Output fluorite concentrate and fluorite mine tailing, fluorite mine tailing all returns upper level flotation, and fluorite concentrate is as next
The raw material of level.The productivity of the fluorite concentrate finally given be 53%(be 22.7% to the productivity of former total mine tailing),
Detection content of fluoride ion is 46.55%, and the grade of fluorite is 95.58%, and its operation recovery is 91.39%.
When in the fluorite concentrate finally given, when iron content is more than 1%, Surface field intensity be 0.6T～
Carry out under conditions of 1.0T dropping iron.
When in the fluorite concentrate finally given, calcium oxide content is more than 1%, by it through Solute mass fraction
Being the chlorohydric acid pickling of 5%, solid-liquid volume ratio is 1:10, temperature 60～90 DEG C, 10 minutes time, and amount is big
Time the proper extension time, finally give high-grade fluorite concentrate.The productivity of high-grade fluorite concentrate is
49.80%(is 21.6% to the productivity of former total mine tailing), detection content of fluoride ion is 47.35%, REO
It is respectively 0.61%, 97.22%, to rare earth ore concentrate and the operation recovery of fluorite concentrate with the grade of fluorite
It is respectively 2.40%, 86.82%.
Embodiment 3
In the present embodiment, the process improving the mine tailing middle rare earth rate of recovery and fluorite grade includes following step
Rapid:
1) bulk flotation
As it is shown in figure 1, for the flow chart of bulk flotation technique, in bulk flotation technique, pH be 10～
11, temperature is 28 DEG C.Bulk flotation includes that one roughing, secondary are scanned selected with four times.
Being more than 7.00% by REO grade, fluorite grade is the Bayan Obo mine tailing 250g of more than 11.5%
Roughly select, add Na while stirring2CO329ml, waterglass 21ml, collecting agent 49ml, obtain thick
Concentrate selection and rougher tailings, it is selected that rougher concentration proceeds the first order.
Rougher tailings is carried out ore grinding, and granularity reaches-200 mesh and accounts for more than 96.8%.
Mine tailing after ore grinding is carried out the first order scan, add waterglass 12ml, collecting agent 18ml,
Scanning mine tailing to first order scavenger concentrate and the first order, first order scavenger concentrate returns and roughly selects next time.
The first order is scanned mine tailing carry out the second level and scan, add collecting agent 12ml, the second level must be arrived and scan
Concentrate and mixing mine tailing, second level scavenger concentrate returns ore grinding next time, and mixing mine tailing is discharged to Tailings Dam.
Rougher concentration is carried out the first order selected, add 16ml waterglass, obtain the selected concentrate of the first order
With first order cleaner tailings, first order cleaner tailings returns and roughly selects next time.
Selected for first order concentrate is carried out the second level selected, add 9ml waterglass, obtain the second level selected
Concentrate and second level cleaner tailings, it is selected that second level cleaner tailings returns the first order.
Selected for second level concentrate is carried out the third level selected, add 9ml waterglass, obtain the third level selected
Concentrate and third level cleaner tailings, it is selected that third level cleaner tailings returns to the second level.
Selected for third level concentrate is carried out the fourth stage selected, add 7ml waterglass, obtain mix-froth and
Fourth stage cleaner tailings, it is selected that fourth stage cleaner tailings returns the third level, and mix-froth proceeds to separate
Technique.
Balance is i.e. can reach through 30 closed-circuit tests, wherein, in the mix-froth obtained, mix-froth
Productivity be 63.06%, the grade of REO and fluorite is respectively 11.21%, 16.90%, to rare earth ore concentrate
It is respectively 96.32%, 96.54% with the operation recovery of fluorite concentrate；In the mixing mine tailing obtained, mixing
The productivity of mine tailing is 36.94%, and the grade of REO and fluorite is respectively 0.73%, 1.02%, to rare earth essence
The operation recovery of ore deposit and fluorite concentrate is respectively 3.68%, 3.46%.
2) separation of mix-froth
As in figure 2 it is shown, be selected reagent removal process chart in the present invention.Mix-froth is carried out reagent removal,
Obtain the first rareearth enriching material and the first fluorite enriched substance.Reagent removal uses machinery reagent removal to tie mutually with washing reagent removal
The mode closed, i.e. the selected reagent removal of flotation, through six selected (or thick five essences) reagent removals of foam,
To ore pulp product, concentrate (precipitating after adding water, remove supernatant concentration) through washing and obtain the first rare earth richness
Collection thing, and another froth pulp, obtain the first fluorite enriched substance through washing reagent removal.Every grade adds not
With the waterglass of quantity, front triple cleaning respectively adds 15ml waterglass, and rear triple cleaning respectively adds 10ml water glass
Glass, the every grade of dry weight that feeds time selected is 250 grams.Wherein, the productivity of the first rareearth enriching material is 70.33%
(productivity to former total mine tailing is 44.3%), the grade of REO is 13.00%, and its operation recovery is
82%；The productivity of the first fluorite enriched substance be 29.67%(be 18.74% to the productivity of former total mine tailing), firefly
The grade of stone is 6.80%, and its operation recovery is 18%.
As it is shown on figure 3, be the separation process figure of mix-froth.Carry out washing dense by the first fluorite enriched substance
Contracting (precipitates after adding water, remove supernatant concentration), obtains the second rareearth enriching material and the enrichment of the second fluorite
Thing, wherein, the productivity of the second rareearth enriching material be 43.8%(be 8.3% to the productivity of former total mine tailing),
The grade of REO is 14.9%, and its operation recovery is 90.6%；The productivity of the second fluorite enriched substance is
56.2%(is 10.4% to the productivity of former total mine tailing), the grade of fluorite is 1.13%, its operation recovery
It is 9.40%.
When iron content is more than 3% in the first rareearth enriching material, the first rareearth enriching material is carried out strong magnetic and takes off
Iron, Surface field intensity is below 1T, obtains the 3rd rareearth enriching material and iron enriched substance, iron enriched substance
Return mixing is roughly selected.Wherein, the productivity of the 3rd rareearth enriching material is the 52.4%(productivity to former total mine tailing
It is 33.1%), the grade of REO is 13.26%, and its operation recovery is 84%；The productivity of iron enriched substance
It is 11.2% for 17.9%(to the productivity of former total mine tailing), the grade of REO is 7.35%, and its operation is returned
Yield is 16.0%.
3) flotation of rareearth enriching material
Second rareearth enriching material and the 3rd rareearth enriching material are carried out flotation (when as total rare earth (TRE) enriched substance
In one rareearth enriching material during iron content≤3%, using the first rareearth enriching material and the 3rd rareearth enriching material as always
Rareearth enriching material), the flotation of rareearth enriching material includes that one roughing, secondary are scanned and triple cleaning.
Total rare earth (TRE) enriched substance being roughly selected, total rare earth (TRE) enriched substance is 41.4% to the productivity of former total mine tailing,
The grade of REO is 14.57%.Add waterglass 10ml, lignin 5ml, collecting agent 16ml, bubble
Agent is No. 2 oil, and addition is 10ml needle tubing 3～4, and controlling to roughly select temperature is 38 DEG C, is roughly selected
Rare earth ore concentrate and roughly select rare-earth tailing, roughly selecting rare earth ore concentrate, to proceed the first order selected.
To roughly select rare-earth tailing to carry out the first order and scan, controlling to scan temperature is 37 DEG C, adds waterglass
8ml, collecting agent 13ml, obtain the first order and scan rare earth ore concentrate and the first order scans rare-earth tailing, and first
Level is scanned rare earth ore concentrate return and is roughly selected.
The first order being scanned rare-earth tailing carry out the second level and scan, controlling to scan temperature is 37 DEG C, adds water
Glass 4ml, collecting agent 19ml, must arrive the second level and scan rare earth ore concentrate and the 3rd fluorite enriched substance, and second
Level is scanned the rare earth ore concentrate return first order and is scanned.The productivity of the 3rd fluorite enriched substance be 78.30%(to former always
The productivity of mine tailing is 32.42%), the grade of fluorite is 1.79%, and its operation recovery is 9.61%.
To roughly select rare earth ore concentrate and carry out selected, controlling selected temperature is 37 DEG C, and wherein, the first order is selected to be added
Enter waterglass 8ml, lignin 2ml and collecting agent 14ml；The second level is selected and the third level selected in all add
Enter waterglass 8ml, lignin 5ml and collecting agent 15ml；Every one-level selected all outputs rare earth ore concentrate and dilute
Soil mine tailing, rare-earth tailing all returns upper level flotation, and rare earth ore concentrate is as the raw material of next stage.
After 15 times reach balance, obtaining result of the test, the rare earth ore concentrate productivity finally given is 21.7%
(productivity to former total mine tailing is 8.98%), the grade of REO is 60.72%, and its operation recovery is
90.39%。
4) flotation of fluorite enriched substance
Second fluorite enriched substance and the 3rd fluorite enriched substance are carried out flotation, total firefly as total fluorite enriched substance
The amount of stone enriched substance needs more than 150g, controls the iron in total fluorite enriched substance and content of rare earth below 2%,
Flotation temperature is room temperature, and PH is 11～12.The flotation of fluorite enriched substance includes that one roughing, secondary are swept
Choosing is selected with 5 times.
When in total fluorite enriched substance, iron content is more than 3%, at the bar that Surface field intensity is 0.2T～0.8T
Deferrization is carried out under part.
Total fluorite enriched substance being roughly selected, total fluorite enriched substance is 42.82% to the productivity of former total mine tailing,
The grade of fluorite is 27.5%.Every 150g adds sodium carbonate 6ml, waterglass 13ml, oleic acid 11ml,
Obtaining roughly selecting fluorite concentrate and roughly select fluorite mine tailing, roughly selecting fluorite concentrate, to proceed the first order selected.
Fluorite mine tailing will be roughly selected carry out the first order and scan, add 4ml waterglass, 11ml oleic acid, obtain the
One-level scans fluorite concentrate and the first order scans fluorite mine tailing, and the first order is scanned fluorite concentrate return and roughly selected.
The first order is scanned fluorite mine tailing carry out the second level and scan, add 11ml oleic acid, obtain the second level
Scanning fluorite concentrate and true tailings, the second level is scanned the fluorite concentrate return first order and is scanned.True tailings
Productivity be 47%, detection content of fluoride ion be 4.95%, the grade of fluorite is 10.16%, and its operation is returned
Yield is 8.61%.
Fluorite concentrate will be roughly selected and carry out selected, wherein the first order selected to the fourth stage selected in add 17ml water
Glass, adds 9ml waterglass and 4ml oleic acid, every one-level selected all outputs fluorite concentrate during level V is selected
With fluorite mine tailing, fluorite mine tailing all returns upper level flotation, and fluorite concentrate is as the raw material of next stage.?
The productivity of the fluorite concentrate obtained eventually be 53%(be 22.7% to the productivity of former total mine tailing), detection fluorine from
Sub-content is 46.55%, and the grade of fluorite is 95.58%, and its operation recovery is 91.39%.
When in the fluorite concentrate finally given, when iron content is more than 1%, Surface field intensity be 0.6T～
Carry out under conditions of 1.0T dropping iron.
When in the fluorite concentrate finally given, calcium oxide content is more than 1%, by it through Solute mass fraction
Being the chlorohydric acid pickling of 5%, solid-liquid volume ratio is 1:10, temperature 60～90 DEG C, 10 minutes time, and amount is big
Time the proper extension time, finally give high-grade fluorite concentrate.The productivity of high-grade fluorite concentrate is
49.80%(is 21.6% to the productivity of former total mine tailing), detection content of fluoride ion is 47.35%, REO
It is respectively 0.61%, 97.22%, to rare earth ore concentrate and the operation recovery of fluorite concentrate with the grade of fluorite
It is respectively 2.40%, 86.82%.
Claims (9)
1. one kind is improved the mine tailing middle rare earth rate of recovery and the process of fluorite grade, it is characterised in that bag
Include following steps:
1) mine tailing raw material is roughly selected through one-level, multistage scan with multistage selected after obtain mix-froth and mixed
Close mine tailing；Mine tailing raw material obtains rougher concentration and rougher tailings through roughly selecting, and carries out rougher tailings scanning point
Separate out mixing mine tailing, carry out rougher concentration selected isolating mix-froth；Multistage scan selected with multistage
In the middling recurrence upper level that obtains of every one-level；
2) by described mix-froth isolated total rare earth (TRE) enriched substance and total fluorite enriched substance；Described mixing bubble
After foam reagent removal, obtain the first rareearth enriching material and the first fluorite enriched substance；First fluorite enriched substance is carried out
Washing concentrates, and obtains the second rareearth enriching material and the second fluorite enriched substance；When described first rareearth enriching material
When middle iron content is more than 3%, by described first rareearth enriching material deferrization, obtain the 3rd rareearth enriching material；
3) described total rare earth (TRE) enriched substance is roughly selected through one-level, multistage scan with multistage selected after obtain rare earth
Concentrate；Described total rare earth (TRE) enriched substance obtains roughly selecting rare earth ore concentrate and roughly selecting rare-earth tailing through roughly selecting, and will roughly select
Rare-earth tailing is scanned, and will roughly select rare earth ore concentrate and carry out selected isolating rare earth ore concentrate；Multistage scan and
Multi-level oil chooses the middling recurrence upper level that every one-level obtains；Roughly select after rare-earth tailing is scanned and isolate the 3rd
Fluorite enriched substance；Using the second fluorite enriched substance and the 3rd fluorite enriched substance as total fluorite enriched substance；Work as institute
When stating iron content ＞ 3% in the first rareearth enriching material, the second rareearth enriching material and the 3rd rareearth enriching material are made
For total rare earth (TRE) enriched substance；When iron content≤3% in the first rareearth enriching material, by the first rareearth enriching material and
3rd rareearth enriching material is as total rare earth (TRE) enriched substance；
4) described total fluorite enriched substance is roughly selected through one-level, multistage scan with multistage selected after obtain fluorite
Concentrate；Described total fluorite enriched substance obtains roughly selecting fluorite concentrate and roughly selecting fluorite mine tailing through roughly selecting, and will roughly select
Fluorite mine tailing carries out scanning isolating true tailings, will roughly select fluorite concentrate carry out selected isolate fluorite essence
Ore deposit；Multistage scan the middling recurrence upper level choosing every one-level to obtain with multi-level oil.
2. process as claimed in claim 1, it is characterised in that step 1) in pH be 10～
11, temperature is 25 DEG C～30 DEG C, scans selected with four times including one roughing, secondary；In roughly selecting, often
250g mine tailing raw material adds Na2CO329～32ml, waterglass 18～21ml, collecting agent 49～52ml,
Obtain rougher concentration and rougher tailings；Scanning entering after rougher tailings ore grinding, the first order scans middle addition
9～12ml waterglass and 18～21ml collecting agents, addition 9～12ml collecting agents are scanned in the second level；To roughly select
Concentrate carries out selected, the first order selected to the fourth stage selected in be separately added into 13～16ml, 9～12ml,
9～12ml, 4～7ml waterglass.
3. process as claimed in claim 1, it is characterised in that step 2) described in reagent removal bag
Include six times selected, front triple cleaning respectively adds 15ml waterglass, and rear triple cleaning respectively adds 10ml waterglass,
The every grade of dry weight that feeds time selected is 250 grams.
4. process as claimed in claim 1, it is characterised in that step 3) include once
Roughly select, secondary is scanned and triple cleaning, and wherein, roughly selecting temperature is 38～45 DEG C, scans equal with selected temperature
It it is 33～37 DEG C；In roughly selecting, addition waterglass 10～13ml, lignin 2～5ml, collecting agent 16～19ml,
Foaming agent is No. 2 oil, and addition is 10ml needle tubing 3～4, obtains roughly selecting rare earth ore concentrate and roughly selecting dilute
Soil mine tailing；Rare-earth tailing will be roughly selected scan, the first order scan middle addition 5～8ml waterglass and
13～16ml collecting agents, addition 4～7ml waterglass and 18～20ml collecting agents are scanned in the second level；To roughly select
Rare earth ore concentrate carries out selected, the first order selected addition waterglass 5～8ml, lignin 2～5ml and collecting agent
14～16ml；The second level is selected and the third level selected in all add waterglass 5～8ml, lignin 2～5ml and
Collecting agent 11～15ml.
5. the process as described in claim 2 or 4, it is characterised in that in total fluorite enriched substance
When iron content is more than 3%, under conditions of Surface field intensity is 0.2T～0.8T, carry out deferrization.
6. process as claimed in claim 5, it is characterised in that step 4) in pH be 11～
12, temperature is room temperature, scans selected with 5～8 times including one roughing, secondary；In roughly selecting, add Na2CO3
4～6ml, waterglass 13～16ml, oleic acid 8～11ml, obtain roughly selecting fluorite concentrate and roughly selecting fluorite mine tailing；
To roughly select fluorite mine tailing to scan, the first order scans middle addition 4～6ml waterglass and 10～12ml oleic acid,
Addition 8～11ml oleic acid are scanned in the second level；To roughly select fluorite concentrate and carry out selected, the first order is selected to the 4th
Level selected in add 14～17ml waterglass, add 8 during selected to the 8th grade of level V is selected～10ml waterglass and
3～5ml oleic acid.
7. process as claimed in claim 6, it is characterised in that described waterglass and Na2CO3
Solute mass fraction be 5%；The Solute mass fraction of described collecting agent and described oleic acid is 2%.
8. process as claimed in claim 1, it is characterised in that when in described fluorite concentrate, iron contains
When amount is more than 1%, carry out dropping iron under conditions of Surface field intensity is 0.6T～1.0T.
9. process as claimed in claim 1, it is characterised in that when aoxidizing in described fluorite concentrate
When calcium content is more than 1%, being the chlorohydric acid pickling of 5% by it through Solute mass fraction, solid-liquid volume ratio is
1:10, temperature is 60～90 DEG C, and the time is more than 10 minutes, obtains the fluorite essence that grade is more than 97%
Ore deposit.
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| CN106076605B (en) * | 2016-08-05 | 2018-05-15 | 中国地质科学院郑州矿产综合利用研究所 | Fluorite ore scavenging, selecting, desliming and sorting method |
| CN108480037B (en) * | 2018-04-19 | 2020-03-06 | 东北大学 | Beneficiation method for recovering iron, rare earth, fluorite and niobium from iron tailings of associated multi-metal minerals |
| CN108580023B (en) * | 2018-04-19 | 2020-03-10 | 东北大学 | Multi-component recycling and beneficiation method for iron tailings associated with rare earth minerals |
| CN108787159B (en) * | 2018-05-22 | 2020-09-25 | 北京矿冶科技集团有限公司 | Comprehensive recovery beneficiation method for low-grade uranium-bearing polymetallic ore |
| CN109482360B (en) * | 2018-11-20 | 2021-02-02 | 中国地质科学院矿产综合利用研究所 | Mineral processing technology of rare earth, fluorite and barite associated ore |
| CN110860369A (en) * | 2019-12-06 | 2020-03-06 | 四川江铜稀土有限责任公司 | Beneficiation method for recovering ultralow-grade rare earth and fluorite from rare earth tailings |
| CN111644270B (en) * | 2020-06-15 | 2023-01-31 | 广东省科学院资源利用与稀土开发研究所 | Beneficiation process for recovering fluorite from tailings |
| CN112604817A (en) * | 2020-11-27 | 2021-04-06 | 湖南柿竹园有色金属有限责任公司 | Recycling and ore dressing process for tailings containing high-silicon gangue and high-calcium associated fluorite |
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| CN103831173A (en) | 2014-06-04 |
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