CN102716805A - Flotation method for high-content slip manganese rock type low-grade nickel ores - Google Patents
Flotation method for high-content slip manganese rock type low-grade nickel ores Download PDFInfo
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Abstract
The invention discloses a flotation method for high-content slip manganese rock type low-grade nickel ores. The flotation method includes that raw ores are ground after being crushed, the fineness of 84-86% of ground products reaches -200 meshes, and the concentration of pulp ranges from 30% to 33%; the pulp is stirred while flotation combined reagent is added into the pulp; the flotation combined reagent comprises carboxymethyl cellulose salt, hexametaphosphate, a flotation regulator, a collector, an activator and a foaming agent; the pulp added with the combined reagent is fed into a flotation machine to be in closed cycle flotation, and flotation foams carrying the nickel ores are separated; and enriched nickel concentrations are obtained after combined reagents are added into the flotation foams to be in flotation by multiple times. Service effect show that by the aid of secondary flotation, tertiary scavenging and primary concentration technological flows, raw nickel ores with the grade ranging from 0.40% to 0.60% is in flotation by the flotation combined reagents to obtain the nickel concentrates with the grade ranging from 5.0% to 6.0%, nickel recovery rate ranges from 75% to 80%, accordingly, the high-content slip manganese rock type low-grade nickel ores are efficiently recovered in a flotation manner, the enrichment ratio of the concentrates is higher than 10, the technological processes are simple, and the flotation recovery rate is high.
Description
Technical field
The invention belongs to low-grade nickel sulfide ore flotation technology field, relate to the sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating.
Background technology
Nickel resources comprises nickel sulfide ore, lateritic nickel ore and nickel ore and pelagite.Be main mainly in the world at present with the exploitation nickel sulfide ore.Because the minimizing day by day of high-grade nickel minerals, low-grade nickel sulfide ore is also paid attention to by various countries.
The country of a large amount of processing low-grade nickel sulfide ores mainly contains Russia and Australia in the world.The most advanced nickel ore dressing of recognized techniques index is Australian Man Teken ore dressing plant in the world at present, and the mineral processing index raw ore is selected in grade 0.70%, the rate of recovery about 72%.These also a large amount of processing low-grade nickel minerals of gram nickel company of Muscovite such Lille, raw ore nickel grade about 0.55% is through sorting the nickel ore concentrate that obtains nickel grade 5.0%, nickel recovery 63%～68%.In China Jinchuan company, the annual low ore grade nickel ore of handling 5,000,000 tons.This ore essential mineral is pentlandite, violarite, pyrite and magnetic iron ore chalcopyrite; Gangue mineral is serpentine and chlorite, and ore is prone to choosing, the raw ore nickel grade 0.60～0.80% of its production; Concentrate nickel grade 5.0%～6.0%, nickel recovery 68%～75%.
The general difficult choosing of low grade nickel ore, complex process, flotation recovery rate is lower; Especially the sliding magnesium lithotype of high-load low grade nickel ore, the talcum in the ore, gangue mineral floatabilities such as serpentine are good, concentrate nickel grade 3.5%～4.5%, nickel recovery 68%～75% has a strong impact on the floatation indicators and the metal recovery rate of nickel.
The mountain range nickel minerals that simmers tea belongs to large-scale low-grade nickel sulfide mineral deposit, and ore bodies is stored in the main ultrabasic rock body.Main metalliferous mineral has magnetic iron ore, pyrite, magnetic iron ore, pentlandite etc. in the ore.Nonmetallic mineral is mainly talcum, serpentine, magnesite, the tremolite, chlorite, quartz etc.Ore type is divided into four kinds of sliding magnesium lithotypes, snake lithotype, magnesite lithotype, tremolite type.Wherein sliding magnesium lithotype accounts for 49.64% of ore total amount, belongs to the low-grade nickel sulfide ore of the sliding magnesium lithotype of high-load.Gangue mineral talcum, serpentine and carbonate mineral magnesite equal size main in the ore are high; These mineral were easy to pulverizing and argillization in grinding process; These are crossed and pulverize and the talcs mineral nature floatability of argillization is good, in floatation process, have a strong impact on production target.
Summary of the invention
The problem that the present invention solves is to provide the sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating, through adding combination medicament, adopts rational flotation process to reach the high-recovery of the low-grade nickel sulfide ore flotation of the sliding magnesium lithotype of realization high-load.
The present invention realizes through following technical scheme:
The sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating may further comprise the steps:
Tcrude ore through after the fragmentation, is got into grind grading then and adds water and process ore pulp, add combination medicament when ore pulp gets into agitator;
Described composite restrainer comprises carboxymethyl cellulose salt and hexametaphosphate, and floatation regulator, collecting agent, activator and foaming agent;
The ore pulp that adds composite restrainer is sent to and carries out the closed cycle flotation in the flotation device, and the foam that carries nickel minerals that floatingly selects is separated;
The foam that floatingly selects adds the refined ore that composite restrainer carries out obtaining after the repeatedly flotation nickel minerals enrichment again;
Each amounts of components is in the combination medicament of tcrude ore per ton: carboxymethyl cellulose salt 600～800g/t, hexametaphosphate 460～800g/t, flotation collector 240～400g/t, activator 180～320g/t, foaming agent 100～150g/t.
The mog of described ore is controlled to be :-200 orders 84～86%.
The mass concentration of described ore pulp is 30～33%, and the pH behind the adding combination medicament is 8.5～9.0.
Also comprise sodium carbonate in the described combination medicament, the consumption of tcrude ore per ton is: 300～400g/t.
Described carboxymethyl cellulose salt is a sodium carboxymethylcellulose, and hexametaphosphate is a calgon.
Described flotation collector is the amyl group xanthate, and activator is a copper sulphate, and foaming agent is a methyl isobutyl carbinol.
In the described combination medicament, be mixed with the aqueous solution after at first carboxymethyl cellulose salt and hexametaphosphate mix and join in the ore pulp, add activator after the stirring then, add floatation regulator, collecting agent and activator after the stirring again.
The composite restrainer that is used for raw ore per ton comprises following component:
Sodium carboxymethylcellulose 700～800g, calgon 460～800g, amyl group xanthate 240～400g, sodium carbonate 300～400g, sulfuric acid amine 300～400g, copper sulphate 180～320g, methyl isobutyl carbinol 100～150g.
Described method for floating comprises to be roughly selected, scans and selected three processes that constantly circulate, and may further comprise the steps:
1) with after the fragmentation of tcrude ore process, get into grinding-classification operation, the ore milling product fineness reaches-200 orders 84～86%, and the mass concentration of processing ore pulp is 30～33%; Add combination medicament when this ore pulp gets into agitator, each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 200～300g/t, calgon 100～250g/t, amyl group xanthate 100～180g/t, copper sulphate 50～150g/t, methyl isobutyl carbinol 50～80g/t, sodium carbonate 100～180g/t, sulfuric acid amine 100～180g/t;
The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, and the foam that carries nickel minerals that floatingly selects is separated; The combination medicament that residue mine tailing part adds the same amount except that sodium carbonate and sulfuric acid amine again is sent to secondary and roughly selects and carry out secondary in the flotation device and roughly select, with the foam separation that carries nickel minerals that floatingly selects;
Merge and roughly select the foam that carries nickel minerals that separates to obtain for twice and carry out selected nickel ore concentrate, and secondary is roughly selected remainder and scanned;
2) secondary being roughly selected the remainder mine tailing scans; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50～100g/t, hexametaphosphate 30～50g/t, amyl group xanthate 50～100g/t, copper sulphate 30～50g/t, methyl isobutyl carbinol 10～20g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; The remainder mine tailing is sent into the secondary scavenging flotation machine, secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge and scan the foam that carries nickel minerals that separates to obtain for twice and send into secondary and roughly select, and secondary is scanned the remainder mine tailing and got into three times and scan or discard as mine tailing;
3) the foam merging that carries nickel minerals that will roughly select gained is carried out selected; Be sent to behind the adding combination medicament and carry out primary cleaning in the precision sorting flotation machine, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50～100g/t, hexametaphosphate 30～50g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; Remainder is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates and to select to such an extent that carry the foam of nickel minerals again;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and turn back to secondary and roughly select.
Compared with prior art, the present invention has following beneficial technical effects:
The combination medicament that is used for the flotation of the sliding magnesium lithotype of high-load low grade nickel ore provided by the invention; To the sliding magnesium lithotype gangue mineral that disturbs the nickel minerals flotation in the low grade nickel ore floatation process; Select carboxymethyl cellulose salt and hexametaphosphate as the floating key component of choosing that suppresses to disturb mineral; Cooperate floatation regulator, collecting agent, activator and foaming agent again, after being mixed with working solution, can suppress of the interference of easy-floating gangue mineral such as talcum, serpentine and carbonate the nickel minerals flotation.This combination medicament has played crucial effect to the separating flotation nickel minerals in floatation process.
Adopt secondary to roughly select three times and scan the flotation process of primary cleaning; In raw ore nickel grade 0.40～0.60%, use this flotation combination medicament working solution and carry out having obtained nickel ore concentrate grade 5.0～6.0% after the flotation, nickel recovery 75～80%; Thereby realized efficient floatation recovery to the sliding magnesium lithotype of high-load low grade nickel ore; The concentrate concentration ratio is greater than 10, and technology is simple, and the rate of recovery is high.
Description of drawings
Fig. 1 is the flow chart of method for floating of the present invention.
The specific embodiment
Below in conjunction with concrete embodiment the present invention is done further detailed description, said is to explanation of the present invention rather than qualification.
The sliding magnesium lithotype of high-load provided by the invention low grade nickel ore method for floating; The characteristics that its technology is outstanding are to adopt secondary to roughly select three times and scan the flotation process of primary cleaning; Use rational flotation combination medicament; Promptly make up inhibitor, add floatation regulator, collecting agent, activator and foaming agent again, after being mixed with working solution, can realize the floatation recovery of the sliding magnesium lithotype of high-load low grade nickel ore as auxiliary as the sliding magnesium lithotype gangue mineral that disturbs the nickel minerals flotation with carboxymethyl cellulose salt and hexametaphosphate; Technology is simple, and the rate of recovery is high.
Concrete methylcellulose salt and hexametaphosphate preferred its alkali metal salt, especially sodium salt and sylvite.Be respectively in mass fraction for its control, alkali metal content in the methylcellulose salt≤20%, total phosphorus hydrochloric acid is (with P in the hexametaphosphate
2O
5Meter) content＞68%.
Combination with sodium carboxymethylcellulose and calgon specifies its requirement below:
Sodium carboxymethylcellulose (being called for short CMC): shear pressure:>=550mpa.s, weightlessness: alkali metal content≤15.0%: replacement degree≤18.0%: 0.75.
Calgon performance requirement: molecular formula: (NaPO
3) 6, white mealy crystal meets the GB1624-79 standard; Total phosphorus hydrochloric acid is (with P
2O
5Meter) content＞68%, PH=5.8～7.3, average degree of polymerization=10～16.
Floatation regulator, collecting agent, activator, foaming agent all can be used as nickel minerals flotation floating agent commonly used;
Concrete described floatation process method comprises roughly selects, scans and selected three processes that constantly circulate; And select sodium carboxymethylcellulose and calgon inhibitor for use as gangue mineral; Sodium carbonate is as the adjustment agent, and the amyl group xanthate is that activator, methyl isobutyl carbinol (MIBC) describe for foaming agent is used as specific embodiment as flotation collector, the copper sulphate of nickel minerals.
When carrying out mineral floating; At first need sodium carboxymethylcellulose and calgon be mixed with the aqueous solution, add in proportion in the ore pulp (mass concentration is 30-33%) and stir after 5 minutes, add sodium carbonate more in proportion successively; Sulfuric acid amine; Copper sulphate stirred after 5 minutes, added the amyl group xanthate again, and the MIBC stirring gets into flotation device and carries out flotation after 3～5 minutes.
Perhaps in proportion each component all is dissolved in the water, is mixed with working solution, join then and carry out flotation after ore pulp fully stirs.
Concrete to use amount, each component is to use and is respectively (can adjust according to actual conditions):
The sodium carboxymethylcellulose consumption is 700～800 gram/ton ore deposits;
The calgon consumption is 460～800 gram/ton ore deposits;
Amyl group xanthate consumption is 240～400 gram/ton ore deposits;
Sodium carbonate amount is 300～400 gram/ton ore deposits;
The copper sulphate consumption is 180～320 gram/ton ore deposits;
The MIBC consumption is 100～150 gram/ton ore deposits;
Sulfuric acid amine consumption is 300～400 gram/ton ore deposits.
Flotation embodiment below in conjunction with concrete describes.
Embodiment 1
Referring to Fig. 1, the sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating comprises and roughly selects, scans and selected three processes that constantly circulate, and specifically may further comprise the steps:
1) with behind the tcrude ore process crushing and screening, get into grinding-classification operation then, the ore milling product fineness reaches-200 orders 85%, pulp density 30%; Adding combination medicament when stirring ore pulp roughly selects; Each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 200g/t, calgon 100g/t, amyl group xanthate 100g/t, copper sulphate 50g/t, methyl isobutyl carbinol 50g/t; The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, roughly selects 13 minutes, and the foam that carries nickel minerals that floatingly selects is separated;
Add composite restrainer sodium carboxymethylcellulose 150g/t, calgon 100g/t, amyl group xanthate 50g/t, copper sulphate 30g/t, methyl isobutyl carbinol 40g/t again in the remainder mine tailing slurry; In flotation device, carry out secondary and roughly select, roughly selected 12 minutes, the foam that carries nickel minerals that floatingly selects is separated;
Merge roughly select for twice the foam rough concentrate that carries nickel minerals that separates to obtain carry out selectedly, and secondary is roughly selected remainder and is scanned;
2) secondary being roughly selected remainder adds water and processes ore pulp and scan; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 100g/t, hexametaphosphate 50g/t, amyl group xanthate 20g/t, copper sulphate 15g/t, methyl isobutyl carbinol 10g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; Remainder adds identical composite restrainer and is sent to and carries out secondary in the flotation device and scan, and secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge scan for twice carry out secondary behind the foam that carries nickel minerals that separates to obtain and roughly select, and secondary scans remainder and carries out three times of identical operation and scan, mine tailing discards;
3) the rough concentrate foam that carries nickel minerals that will roughly select gained carries out selected; Be sent to behind the adding composite restrainer and carry out primary cleaning in the flotation device, each amounts of components of the composite restrainer of ore pulp per ton is: sodium carboxymethylcellulose 30g/t, hexametaphosphate 15g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; The identical composite restrainer of remainder adding is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates;
Merge institute and separates the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder entering secondary and roughly select.
Embodiment 2
The sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating comprises and roughly selects, scans and selected three processes that constantly circulate, and specifically may further comprise the steps:
1) with behind the tcrude ore process crushing and screening, get into grinding-classification operation then, the ore milling product fineness reaches-200 orders 86%, pulp density 32%; Adding combination medicament when stirring ore pulp roughly selects; Each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 600g/t, calgon 500g/t, sodium carbonate 350g/t; Amyl group xanthate 300g/t, copper sulphate 100g/t, methyl isobutyl carbinol 80g/t; The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, roughly selects 13 minutes, and the foam that carries nickel minerals that floatingly selects is separated;
Add composite restrainer sodium carboxymethylcellulose 80g/t, calgon 60g/t, amyl group xanthate 50g/t, copper sulphate 30g/t, methyl isobutyl carbinol 40g/t again in the remainder mine tailing slurry; In flotation device, carry out secondary and roughly select, roughly selected 12 minutes, the foam that carries nickel minerals that floatingly selects is separated;
Merge roughly select for twice the rough concentrate foam that carries nickel minerals that separates to obtain carry out selectedly, and secondary is roughly selected remainder and is scanned;
2) secondary being roughly selected remainder adds water and processes ore pulp and scan; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 60g/t, hexametaphosphate 50g/t, amyl group xanthate 20g/t, copper sulphate 15g/t, methyl isobutyl carbinol 10g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; Remainder adds identical composite restrainer and is sent to and carries out secondary in the flotation device and scan, and secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge scan for twice carry out secondary behind the foam that carries nickel minerals that separates to obtain and roughly select, and secondary scans remainder and carries out three times of identical operation and scan, mine tailing discards;
Secondary is roughly selected remainder to be added water and processes ore pulp and scan; Be sent to behind the adding composite restrainer and carry out once purging selection in the flotation device, each amounts of components of the composite restrainer of ore pulp per ton is: sodium carboxymethylcellulose 50g/t, hexametaphosphate 30g/t, amyl group xanthate 10g/t, copper sulphate 50g/t, methyl isobutyl carbinol 10g/t;
3) the rough concentrate foam that carries nickel minerals that will roughly select gained carries out selected, adds to be sent to behind the composite restrainer to carry out primary cleaning in the flotation device, and each amounts of components of the composite restrainer in ore deposit per ton is: sodium carboxymethylcellulose 40g/t, hexametaphosphate 25g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; The identical composite restrainer of remainder adding is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and return secondary and roughly select.
Embodiment 3
The sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating comprises and roughly selects, scans and selected three processes that constantly circulate, and specifically may further comprise the steps:
1) with behind the tcrude ore process crushing and screening, get into grinding-classification operation then, the ore milling product fineness reaches-200 orders 84%, pulp density 31%; Adding combination medicament when stirring ore pulp roughly selects; Each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 400g/t, calgon 300g/t, sodium carbonate 260g/t; Amyl group xanthate 310g/t, copper sulphate 150g/t, methyl isobutyl carbinol 80g/t; The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, roughly selects 13 minutes, and the foam that carries nickel minerals that floatingly selects is separated;
Add combination medicament sodium carboxymethylcellulose 200g/t, calgon 150g/t, amyl group xanthate 50g/t, copper sulphate 30g/t, methyl isobutyl carbinol 40g/t again in the remainder mine tailing slurry; In flotation device, carry out secondary and roughly select, roughly selected 12 minutes, the foam that carries nickel minerals that floatingly selects is separated;
Merge roughly select for twice the rough concentrate foam that carries nickel minerals that separates to obtain carry out selectedly, and secondary is roughly selected remainder and is scanned;
2) secondary being roughly selected remainder adds water and processes ore pulp and scan; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 100g/t, hexametaphosphate 100g/t, amyl group xanthate 20g/t, copper sulphate 20g/t, methyl isobutyl carbinol 10g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; Remainder adds identical composite restrainer and is sent to and carries out secondary in the flotation device and scan, and secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge scan for twice carry out secondary behind the foam that carries nickel minerals that separates to obtain and roughly select, and secondary scans remainder and carries out three times of identical operation and scan, mine tailing discards;
3) the rough concentrate foam that carries nickel minerals that will roughly select gained carries out selected, adds to be sent to behind the composite restrainer to carry out primary cleaning in the flotation device, and each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50g/t, hexametaphosphate 30g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; The identical composite restrainer of remainder adding is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and return secondary and roughly select.
Embodiment 4
The sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating comprises and roughly selects, scans and selected three processes that constantly circulate, and specifically may further comprise the steps:
1) with behind the tcrude ore process crushing and screening, get into grinding-classification operation then, the ore milling product fineness reaches-200 orders 85%, pulp density 32%; Adding combination medicament when stirring ore pulp roughly selects; Each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 300g/t, calgon 350g/t, sodium carbonate 260g/t; Amyl group xanthate 280g/t, copper sulphate 150g/t, methyl isobutyl carbinol 80g/t; The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, roughly selects 13 minutes, and the foam that carries nickel minerals that floatingly selects is separated;
Add combination medicament sodium carboxymethylcellulose 300g/t, calgon 200g/t, amyl group xanthate 80g/t, copper sulphate 50g/t, methyl isobutyl carbinol 30g/t again in the remainder mine tailing slurry; In flotation device, carry out secondary and roughly select, roughly selected 12 minutes, the foam that carries nickel minerals that floatingly selects is separated;
Merge roughly select for twice the rough concentrate foam that carries nickel minerals that separates to obtain carry out selectedly, and secondary is roughly selected remainder and is scanned;
2) secondary being roughly selected remainder adds water and processes ore pulp and scan; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 120g/t, hexametaphosphate 80g/t, amyl group xanthate 20g/t, copper sulphate 20g/t, methyl isobutyl carbinol 10g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; Remainder adds identical composite restrainer and is sent to and carries out secondary in the flotation device and scan, and secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge scan for twice carry out secondary behind the foam that carries nickel minerals that separates to obtain and roughly select, and secondary scans remainder and carries out three times of identical operation and scan, mine tailing discards;
3) the rough concentrate foam that carries nickel minerals that will roughly select gained carries out selected, adds to be sent to behind the composite restrainer to carry out primary cleaning in the flotation device, and each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50g/t, hexametaphosphate 30g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; The identical composite restrainer of remainder adding is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and return secondary and roughly select.
Embodiment 5
The sliding magnesium lithotype of a kind of high-load low grade nickel ore method for floating comprises and roughly selects, scans and selected three processes that constantly circulate, and specifically may further comprise the steps:
1) with behind the tcrude ore process crushing and screening, get into grinding-classification operation then, the ore milling product fineness reaches-200 orders 84%, pulp density 31%; Adding combination medicament when stirring ore pulp roughly selects; Each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 400g/t, calgon 300g/t, sodium carbonate 300g/t; Amyl group xanthate 210g/t, copper sulphate 180g/t, methyl isobutyl carbinol 100g/t; The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, roughly selects 13 minutes, and the foam that carries nickel minerals that floatingly selects is separated;
Add combination medicament sodium carboxymethylcellulose 300g/t, calgon 200g/t, amyl group xanthate 80g/t, copper sulphate 30g/t, methyl isobutyl carbinol 40g/t again in the remainder mine tailing slurry; In flotation device, carry out secondary and roughly select, roughly selected 12 minutes, the foam that carries nickel minerals that floatingly selects is separated;
Merge roughly select for twice the rough concentrate foam that carries nickel minerals that separates to obtain carry out selectedly, and secondary is roughly selected remainder and is scanned;
2) secondary being roughly selected remainder adds water and processes ore pulp and scan; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 120g/t, hexametaphosphate 60g/t, amyl group xanthate 30g/t, copper sulphate 20g/t, methyl isobutyl carbinol 10g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; Remainder adds identical composite restrainer and is sent to and carries out secondary in the flotation device and scan, and secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge scan for twice carry out secondary behind the foam that carries nickel minerals that separates to obtain and roughly select, and secondary scans remainder and carries out three times of identical operation and scan, mine tailing discards;
3) the rough concentrate foam that carries nickel minerals that will roughly select gained carries out selected, adds to be sent to behind the composite restrainer to carry out primary cleaning in the flotation device, and each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 60g/t, hexametaphosphate 25g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; The identical composite restrainer of remainder adding is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and return secondary and roughly select.
Claims (10)
1. the sliding magnesium lithotype of a high-load low grade nickel ore method for floating is characterized in that, may further comprise the steps:
Tcrude ore through after the fragmentation, is got into grind grading then and adds water and process ore pulp, add combination medicament when ore pulp gets into agitator;
Described combination medicament comprises carboxymethyl cellulose salt and hexametaphosphate, and floatation regulator, collecting agent, activator and foaming agent;
The ore pulp that adds combination medicament is sent to and carries out the closed cycle flotation in the flotation device, and the foam that carries nickel minerals that floatingly selects is separated;
The foam that floatingly selects adds the refined ore that combination medicament carries out obtaining after the repeatedly flotation nickel minerals enrichment again;
Each amounts of components is in the combination medicament of tcrude ore per ton: carboxymethyl cellulose salt 600～800g/t, hexametaphosphate 460～800g/t, sodium carbonate 300～400g, sulfuric acid amine 300～400g, flotation collector 240～400g/t, activator 180～320g/t, foaming agent 100～150g/t.
2. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that the mog of described ore is controlled to be :-200 orders 84～86%.
3. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that the mass concentration of described ore pulp is 30～33%, and the pH behind the adding composite restrainer is 8.5～9.0.
4. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that described floatation regulator is a sodium carbonate, and the consumption of tcrude ore per ton is: 300～400g/t.
5. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that described carboxymethyl cellulose salt is a sodium carboxymethylcellulose, and hexametaphosphate is a calgon.
6. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that described flotation collector is the amyl group xanthate, and activator is a copper sulphate, and foaming agent is a methyl isobutyl carbinol, and the adjustment agent is sodium carbonate and ammonium sulfate.
7. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating; It is characterized in that; In the described combination medicament; Be mixed with the aqueous solution after at first carboxymethyl cellulose salt and hexametaphosphate mix and join in the ore pulp, add floatation regulator, activator after the stirring then, add collecting agent and foaming agent after the stirring again.
8. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that the composite restrainer that is used for raw ore per ton comprises following component:
Sodium carboxymethylcellulose 600～800g, calgon 460～800g, amyl group xanthate 240～400g, sodium carbonate 300～400g, sulfuric acid amine 300～400g, copper sulphate 180～320g, methyl isobutyl carbinol 100～150g.
9. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that, described method for floating comprises to be roughly selected, scan and selected three processes that constantly circulate, and may further comprise the steps:
1) with after the fragmentation of tcrude ore process, get into grinding-classification operation, the ore milling product fineness reaches-200 orders 84～86%, and the mass concentration of processing ore pulp is 30～33%; Add combination medicament when this ore pulp gets into agitator, each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 200～300g/t, calgon 100～250g/t, amyl group xanthate 100～180g/t, copper sulphate 50～150g/t, methyl isobutyl carbinol 50～80g/t, sodium carbonate 100～180g/t, sulfuric acid amine 100～180g/t;
The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, and the foam that carries nickel minerals that floatingly selects is separated; The combination medicament that residue mine tailing part adds the same amount except that sodium carbonate and sulfuric acid amine again is sent to secondary and roughly selects and carry out secondary in the flotation device and roughly select, with the foam separation that carries nickel minerals that floatingly selects;
Merge and roughly select the foam that carries nickel minerals that separates to obtain for twice and carry out selected nickel ore concentrate, and secondary is roughly selected remainder and scanned;
2) secondary being roughly selected the remainder mine tailing scans; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50～100g/t, hexametaphosphate 30～50g/t, amyl group xanthate 50～100g/t, copper sulphate 30～50g/t, methyl isobutyl carbinol 10～20g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; The remainder mine tailing is sent into the secondary scavenging flotation machine, secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge and scan the foam that carries nickel minerals that separates to obtain for twice and send into secondary and roughly select, and secondary is scanned the remainder mine tailing and got into three times and scan or discard as mine tailing;
3) the foam merging that carries nickel minerals that will roughly select gained is carried out selected; Be sent to behind the adding combination medicament and carry out primary cleaning in the precision sorting flotation machine, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50～100g/t, hexametaphosphate 30～50g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; Remainder is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates and to select to such an extent that carry the foam of nickel minerals again;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and turn back to secondary and roughly select.
10. the sliding magnesium lithotype of high-load as claimed in claim 1 low grade nickel ore method for floating is characterized in that, described method for floating comprises to be roughly selected, scan and selected three processes that constantly circulate, and may further comprise the steps:
1) with after the fragmentation of tcrude ore process, get into grinding-classification operation, the ore milling product fineness reaches-200 orders 84～86%, and the mass concentration of processing ore pulp is 30～33%; Add combination medicament when this ore pulp gets into agitator, each amounts of components of the combination medicament of tcrude ore per ton is: sodium carboxymethylcellulose 580～600g/t, calgon 300～500g/t, amyl group xanthate 150～300g/t, copper sulphate 100～150g/t, methyl isobutyl carbinol 50～100g/t, sodium carbonate 100～350g/t, sulfuric acid amine 100～180g/t;
The ore pulp that adds combination medicament is sent to and carries out one roughing in the flotation device, and the foam that carries nickel minerals that floatingly selects is separated; Residue mine tailing part adds composite restrainer again: sodium carboxymethylcellulose 80～120g/t, calgon 60～100g/t, amyl group xanthate 50～80g/t, copper sulphate 30～50g/t, methyl isobutyl carbinol 40～50g/t; Be sent to secondary and roughly select and carry out secondary in the flotation device and roughly select, the foam that carries nickel minerals that floatingly selects is separated;
Merge and roughly select the foam that carries nickel minerals that separates to obtain for twice and carry out selected nickel ore concentrate, and secondary is roughly selected remainder and scanned;
2) secondary being roughly selected the remainder mine tailing scans; Be sent to behind the adding combination medicament and carry out once purging selection in the flotation device, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50～100g/t, hexametaphosphate 30～50g/t, amyl group xanthate 20～50g/t, copper sulphate 15～30g/t, methyl isobutyl carbinol 10～20g/t;
The foam that carries nickel minerals that once purging selection is floatingly selected separates; The remainder mine tailing is sent into the secondary scavenging flotation machine, secondary is scanned the foam that carries nickel minerals that floatingly selects separate;
Merge and scan the foam that carries nickel minerals that separates to obtain for twice and send into secondary and roughly select, and secondary is scanned the remainder mine tailing and got into three times and scan or discard as mine tailing;
3) the foam merging that carries nickel minerals that will roughly select gained is carried out selected; Be sent to behind the adding combination medicament and carry out primary cleaning in the precision sorting flotation machine, each amounts of components of the combination medicament in ore deposit per ton is: sodium carboxymethylcellulose 50～100g/t, hexametaphosphate 30～50g/t;
The foam that carries nickel minerals that primary cleaning is floatingly selected separates; Remainder is sent to and carries out recleaning in the flotation device once more, and the foam that carries nickel minerals that recleaning is floatingly selected separates and to select to such an extent that carry the foam of nickel minerals again;
Merge institute and separate the foam water that carries nickel minerals that obtains and wash the nickel ore concentrate that post precipitation obtains enrichment, merge twice selected remainder and turn back to secondary and roughly select.
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