CN107570326B - A kind of method of smithsonite type zinc oxide ore flotation desilication - Google Patents
A kind of method of smithsonite type zinc oxide ore flotation desilication Download PDFInfo
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- CN107570326B CN107570326B CN201710817737.6A CN201710817737A CN107570326B CN 107570326 B CN107570326 B CN 107570326B CN 201710817737 A CN201710817737 A CN 201710817737A CN 107570326 B CN107570326 B CN 107570326B
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Abstract
The present invention relates to a kind of methods of smithsonite type zinc oxide ore flotation desilication, and in particular to the flotation separation method of smithsonite and quartz belongs to Mineral Processing Engineering field mineral floating separation technology field.A kind of method that the zinc oxide ore flotation of smithsonite type removes silicon mixes the mixing sample ore of smithsonite and quartz to be processed with deionized water, and wherein deionized water and sample ore mass ratio are 3~5:1；First using sodium carbonate as pH adjuster, collecting agent is then added into the ore pulp stirred evenly, collector dosage is 300~360g/t；The flowsheet of slurry agitation that collecting agent is added uniformly is subjected to flotation afterwards.Wherein, the collecting agent is N, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-.Flotation smithsonite silicon removing method regime of agent proposed by the present invention is simple, and process flow is simple, easy to operate, has preferable commercial viability prospect.
Description
Technical field
The present invention relates to a kind of methods of smithsonite type zinc oxide ore flotation desilication, and in particular to smithsonite and quartz
Flotation separation method belongs to Mineral Processing Engineering field mineral floating separation technology field.
Background technique
The consumption figure of zinc resource is number three in non-ferrous metal, is number four in metal.Zinc is in dry external condition
Under relatively stable, and the fine and close zinc carbonate film in one layer easily generated of surface under humid conditions, therefore can be to other materials table
Face is handled.Major part zinc metal is applied in zinc-plated industry at present.Furthermore zinc rubber, battery, shielding material, pigment,
The industry such as printing, paint are also widely used.In recent years, with the rapid growth of China's economic, need of the China for zinc resource
The amount of asking also increases.In 2014, China's zinc concentrate import volume reached 219.82 ten thousand tons.Therefore, the ore dressing of zinc ore is improved
Index has great importance to the sustainable development of zinc resource.
Smithsonite is a kind of important mineral in zinc resource.At present floatation be the most important recovery method of smithsonite it
One.But since smithsonite is more crisp, it is easy to produce sludge in grinding process and is unfavorable for the sorting of valuable mineral and increases medicine
Agent usage amount.Furthermore smithsonite itself is a kind of carbonate mineral, is easy the dissolution in ore pulp and generates zinc ion to silicate arteries and veins
Stone ore produce life-stylize effect, thus using fatty acid collecting agent also can collecting silicate gangue mineral, so as to cause concentrate
Grade is not high.Sulfidization-amine method is the most commonly used method for floating at present.But both need to be added activator in floatation process to water chestnut
Zinc ore, which is activated, will also be added inhibitor and inhibit to gangue minerals such as quartz, be complicated and difficult so as to cause flotation flowsheet
With control.Therefore probing into new smithsonite ore floatation process, the rate of recovery and grade for improving smithsonite provide China's zinc
Efficient utilize in source is of great significance.
Summary of the invention
The present invention provides a kind of method of smithsonite type zinc oxide ore flotation drop silicon, and main purpose is according to novel collecting
Agent realizes the effective of mineral to the different flotation behaviors of smithsonite and gangue mineral quartz, and by adding suitable regulator
Sorting.This method process flow and regime of agent are simple, and are able to achieve the target of smithsonite ore floatation drop silicon.
A kind of method of smithsonite type zinc oxide ore flotation desilication, the method includes following processing steps:
It (1) is in mass ratio that 1:3~5 mix with water by sample ore to be processed, size mixing 1~3min；Optionally, into ore pulp
PH regulator is added to adjust slurry pH to 10~12, then size mixing 2~3min again；
(2) collecting agent N, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-, stirring are added into ore pulp obtained by step (1)
2min, wherein the dosage of the collecting agent is 300~360g/t；Afterwards by the flowsheet of slurry agitation that collecting agent is added it is uniform after float
Choosing, 3~5min of flotation time.
In the method for smithsonite type zinc oxide ore flotation desilication of the present invention, in step (1), by sample ore to be processed
It is in mass ratio that 1:3~5 mix with water, size mixing 1~3min；The then pH value of measurement gained ore pulp, as ore pulp pH value determination is
Required slurry pH then directly carries out step (2)；If ore pulp pH value determination is not the pH value of required ore pulp, then adjusted using pH
Agent adjusts slurry pH to required slurry pH, and then size mixing 2~3min again.
Above-mentioned " required slurry pH " can be the arbitrary value in 10~12, can artificially limit, in order to investigate and
Obtain the flotation results under condition of different pH.
In above-mentioned technical proposal, " dosage of collecting agent is 300~360g/t " refers to every 1t sample ore institute to be processed
It is 300~360g with the amount of collecting agent.
Further, product, that is, tailing in flotation froth product, that is, concentrate and slot is respectively dried after flotation, is weighed,
It calculates the rate of recovery and chemically examines grade.
In above-mentioned technical proposal, sample ore preferably to be processed be smithsonite and quartz artificial mixed ore, and smithsonite with
The mass ratio of quartz is 3:17.
It is preferably described to size mixing are as follows: ore pulp is stirred with the stirring rate of 1600~1992r/min in above-mentioned technical proposal
It mixes.
In above-mentioned technical proposal, the preferably described pH adjuster is Na2CO3Solution.The method of the invention is to described
Na2CO3Solution has no particular/special requirement.
Compared with traditional method for floating, the beneficial effect of this method is: smithsonite type zinc oxide ore proposed by the present invention
The method regime of agent of stone flotation desilication is simple, and collecting agent N, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-and pH need to only be added
It is worth regulator Na2CO3The target of smithsonite ore floatation drop silicon can be realized, therefore easy to operate, has good industry feasible
Property.
Detailed description of the invention
Fig. 1 is the process flow chart of zinc oxide ore flotation desilication described in embodiment 1.
Specific embodiment
Following non-limiting embodiments can with a person of ordinary skill in the art will more fully understand the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments is unless otherwise specified conventional method；The reagent and material, such as
Without specified otherwise, commercially obtain.
The sample granularity of smithsonite, quartz preparation in following embodiments is that -0.074mm (refers to that sample granularity exists
0.074mm or less), smithsonite, quartzy purity are respectively 96.34%, 99.42%.
Following XFGII-5 type hanging trough flotators used in the examples are purchased from Jilin Province Prospect Machinery Plant.
The bis- fatty acyl group ethylene diamine dipropionic acid sodium of following collecting agent N used in the examples, N '-are made as follows,
Specific steps are as follows:
Under conditions of 50 DEG C of reaction temperature, methyl acrylate is added dropwise into the there-necked flask equipped with ethylenediamine, works as ethylenediamine
With methyl acrylate mol ratio be 1:2 when stop be added dropwise.Constant temperature flows back after being added dropwise completely, reacts 4h.After reaction, to production
Object is evaporated under reduced pressure, and unreacted product is steamed, and obtains intermediate product.
Under conditions of 45 DEG C of reaction temperature, to equipped be added dropwise in lauric three-necked flask thionyl chloride to lauric acid with
Thionyl chloride molar ratio is 1:1.02.5h is reacted after being added dropwise completely, then product is evaporated under reduced pressure to obtain fat acyl chloride.
The pH that fat acyl chloride is added dropwise to intermediate product, while controlling reaction system is 10 (by the way that sodium hydroxide solution is added dropwise
The pH for controlling reaction system is 10), to terminate to be added dropwise after it is 1:2 that intermediate product is with fat acyl chloride molar ratio, obtain N, the bis- rouge of N '-
Fat Ethylene Diamine dipropionic acid formicester.Yu Shuizhong, under the conditions of 90 DEG C, the bis- fatty acyl group ethylene diamine dipropionic acid formicesters of N, N '-and hydrogen
Sodium oxide molybdena carries out saponification and obtains final product N, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-, wherein sodium hydroxide and N,
The molar ratio of the bis- fatty acyl group ethylene diamine dipropionic acid formicesters of N '-is 2:1.
Embodiment 1
(1) smithsonite and quartz configurations that mass ratio is 3:17 and are weighed 5g sample ore and is put into flotation cell at mixing sample ore
In, deionized water is then added, wherein sample ore and the mass ratio of deionized water are 1:5；Using hanging trough flotator, in 1992r/
Under conditions of min, the 2min that sizes mixing is stirred；
(2) after sizing mixing, at 13 DEG C of room temperature, the sodium carbonate liquor of 1mol/L is added as pH adjuster, by pH values of pulp tune
It is whole to stir 2min to 10.82, the N of 300g/t is then added, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-are stirred as collecting agent
Flotation, flotation time 3min are carried out after mixing 2min.After flotation, to product, that is, tailing in froth pulp, that is, concentrate and slot point
It Hong Gan, not weigh, and sample examination grade, calculate the rate of recovery, wherein Zn grade is that the 40.40%, rate of recovery can in flotation concentrate
Up to 82.01%.
Embodiment 2
(1) smithsonite and quartz configurations that mass ratio is 3:17 and are weighed 5g sample ore and is put into flotation cell at mixing sample ore
In, deionized water is then added, wherein sample ore and the mass ratio of deionized water are 1:5；Using hanging trough flotator, in 1992r/
Under conditions of min, the 2min that sizes mixing is stirred；
(2) after sizing mixing, at 13 DEG C of room temperature, the sodium carbonate liquor of 1mol/L is added as pH adjuster, by pH values of pulp tune
It is whole to stir 2min to 10.25, the N of 300g/t is then added, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-are stirred as collecting agent
Flotation, flotation time 3min are carried out after mixing 2min.After flotation, to product, that is, tailing in froth pulp, that is, concentrate and slot point
It Hong Gan, not weigh, and sample examination grade, calculate the rate of recovery, wherein Zn grade is that the 36.60%, rate of recovery can in flotation concentrate
Up to 89.67%.
Embodiment 3
(1) smithsonite and quartz configurations that mass ratio is 3:17 and are weighed 5g sample ore and is put into flotation cell at mixing sample ore
In, deionized water is then added, wherein sample ore and the mass ratio of deionized water are 1:5；Using hanging trough flotator, in 1992r/
Under conditions of min, the 2min that sizes mixing is stirred；
(2) after sizing mixing, at 25 DEG C of room temperature, the sodium carbonate liquor of 1mol/L is added as pH adjuster, by pH values of pulp tune
It is whole to stir 2min to 11.20, the N of 360g/t is then added, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-are stirred as collecting agent
Flotation, flotation time 3min are carried out after mixing 2min.After flotation, to product, that is, tailing in froth pulp, that is, concentrate and slot point
It Hong Gan, not weigh, and sample examination grade, calculate the rate of recovery, wherein Zn grade is that the 41.7%, rate of recovery is reachable in flotation concentrate
82.31%.
Embodiment 4
(1) smithsonite and quartz configurations that mass ratio is 3:17 and are weighed 5g sample ore and is put into flotation cell at mixing sample ore
In, deionized water is then added, wherein sample ore and the mass ratio of deionized water are 1:5；Using hanging trough flotator, in 1992r/
Under conditions of min, the 2min that sizes mixing is stirred；
(2) after sizing mixing, after sizing mixing, at 25 DEG C of room temperature, the sodium carbonate liquor of 1mol/L is added as pH adjuster, by mine
Slurry pH is adjusted to 11.08, stirs 2min, the N of 360g/t is then added, the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-, which are used as, catches
Agent is received, carries out flotation, flotation time 3min after stirring 2min.After flotation, to product in froth pulp, that is, concentrate and slot
I.e. tailing is respectively dried, weighs, and sample examination grade, calculates the rate of recovery, and wherein Zn grade is 35.8%, returns in flotation concentrate
Yield is up to 83.87%.
Claims (3)
1. a kind of method of smithsonite type zinc oxide ore flotation desilication, it is characterised in that: the method includes following techniques steps
It is rapid:
It (1) is in mass ratio that 1:3 ~ 5 mix with water by sample ore to be processed, size mixing 1 ~ 3min；PH regulator is added into ore pulp
Slurry pH is adjusted to 10 ~ 12, then size mixing 2 ~ 3min again, and wherein pH regulator is Na2CO3Solution；
(2) collecting agent N is added into ore pulp obtained by step (1), the bis- fatty acyl group ethylene diamine dipropionic acid sodium of N '-stir 2min,
In, the dosage of the collecting agent is 300 ~ 360 g/t；The flowsheet of slurry agitation that collecting agent is added uniformly is subjected to flotation, flotation afterwards afterwards
3 ~ 5min of time.
2. according to the method described in claim 1, it is characterized by: sample ore to be processed is that smithsonite is mixed with the artificial of quartz
Mine, and the mass ratio of smithsonite and quartz is 3:17.
3. according to the method described in claim 1, it is characterized by: will be in flotation froth product, that is, concentrate and slot after flotation
Product, that is, tailing is respectively dried, weighs, calculating the rate of recovery and chemically examine grade.
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