CN102698876B - Method for separating roasted iron core and jade in floatation mode through cation combined collecting agents - Google Patents
Method for separating roasted iron core and jade in floatation mode through cation combined collecting agents Download PDFInfo
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- CN102698876B CN102698876B CN 201210146760 CN201210146760A CN102698876B CN 102698876 B CN102698876 B CN 102698876B CN 201210146760 CN201210146760 CN 201210146760 CN 201210146760 A CN201210146760 A CN 201210146760A CN 102698876 B CN102698876 B CN 102698876B
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Abstract
Provided is a method for separating roasted iron ore and jade in floatation mode through cation combined collecting agents. The mass formula of the cation combined collecting agents is that alkyl polyamines ether: acetic acid: ester=100:(5-20):(5-20), wherein the alkyl polyamines ether is the main body of the cation combined collecting agents, the acetic acid serves as solubilizer, and the ester serves as auxiliary collecting agent and foam controlling agent. The combined collecting agents is matched with starch serving as inhibitor of iron ore, primary flotation is carried out for mixture ore prepared by roasted iron ore purified ore (TFe with 66.25wt.%) of the Jiuquan iron and steel group limited company and jade in proportion of 80:20, fine ore yield is 77.05%, iron grade is 62.31 wt.%, and recovery rate is 90.24%. The combined collecting agents are used for flotation of magnetic fine ore practical minerals of the roasted iron ore of the Jiuquan iron and steel group limited company, the starch is added to serve as the inhibitor, the grade of the raw ore TFe is 54.49 wt.%, and after flows of one rough flotation, one fine flotation, three times of scavenging and middling ore sequential return, iron fine ore yield reaches 82.50%, the grade of TFe reaches 62.17 wt.%, and recovery rate reaches 94.13%. By aid of the cation combined collecting agents, separation of iron-containing gangues such as jade and the iron can be well achieved.
Description
Technical field
the present invention relates to collecting agent and the method for FLOTATION SEPARATION roasting iron ore and jasper, particularly the method for cation combined capturing and collecting agent FLOTATION SEPARATION roasting iron ore and jasper.
Background technology
In recent years, China's iron ore deposit presents the situation that supply falls short of demand, and the annual a large amount of iron ores of import that all ask an exorbitant fare meet the requirement that iron and steel is produced.Domestic iron ore deposit is because having poor, thin, assorted characteristics, and beneficiation cost is very high, and is difficult to produce high-quality iron ore concentrate, has restricted to a certain extent the development of China's steel and iron industry.
In order to carry iron, fall assortedly, the technique of preparing the most widely of current domestic employing is anion reverse floatation technique.This technique has been brought into play important function in an ore dressing difficult problem that solves poor, thin, the assorted iron ore of China.Many iron ore beneficiating factories of China's Anshan Area and Hebei Province all adopt this method to produce iron ore concentrate at present.Anion reverse floatation technique has the advantages such as FLOTATION SEPARATION is effective, production is stable, foam is easy to control, easy to operate, but requires to be warmed to 35 ℃ of left and right when weak point is flotation.Heating one ton and giving the ore deposit annual is 35 yuan/t, to add NaOH adjusting slurry pH during flotation simultaneously and reach 11.5, and add starch and suppress iron, add lime activation quartz and silicate mineral, the pharmacy variety used is many, ore pulp alkalescence is too strong, environment is had to larger contamination, the high industrial policy that does not meet the national energy-saving reduction of discharging of energy consumption.
Cation reverse flotation technique can overcome the problem that anion reverse floatation exists to a certain extent, and he can not heat at flotation at low temperature, saves the energy; Cation reverse flotation technique is simple simultaneously, can under condition of neutral pH, use, and little to the water pollution effect, the medicament condition is single, as long as some add, and collecting agent just can be realized FLOTATION SEPARATION.But the cation-collecting agent flotation also exists that foam is clamminess, the shortcoming of thin mud operating difficulties of many times.The tradition cation-collecting agent is mainly primary amine, quaternary amine, ether amine etc., during use when having thin mud to exist, foam volume greatly, froth breaking not, many situations can not normally be used.
The present invention is directed to iron ore and be difficult to the reality of FLOTATION SEPARATION containing ferrosilicate, with the point of penetration that is separated into of the iron of steel enterprise Co., Ltd calcining magnetic separation ore deposit, Jiuquan concentrate and jasper, having synthesized a kind of main body cation-collecting agent alkyl polyamine ether.And a class combination medicament of preparing by Study of flotation flotation jasper by the flotation characteristic of jasper, the quality proportioning of combination medicament is alkyl polyamine ether: acetic acid: ester :=100: 3 ~ 25: 5 ~ 25.Alkyl polyamine ether is that main body cation-collecting agent, acetic acid are that solubilizer, ester are supplementary catching agent and foam controller, uses this combined capturing and collecting agent, is used in conjunction with the inhibitor of starch as iron ore, to the roasting iron ore purification ore deposit (T of Jiuquan steel enterprise Co., Ltd
fe66.25wt%) with jasper, in 80: 20 ratios, be made into and mix ore deposit and carry out a flotation, obtain concentrate yield 77.05%, iron grade 62.31wt %, the rate of recovery 90.24%.With the actual mineral of this combination medicament flotation wine steel roasted ore magnetic concentrate, its head grade T
fe54.49%, make collecting agent with this combination medicament, starch is made the iron ore inhibitor, through the one roughing primary cleaning, scans for three times and obtains iron ore concentrate productive rate 82.50%, T
fe62.17%, the rate of recovery 94.13%, obtained good separating effect.
Summary of the invention
The object of the invention, for iron ore and the problem that contains ferrosilicate sorting difficulty, is prepared a kind of cation combined capturing and collecting agent, for sorting Jiuquan steel enterprise Co., Ltd roasting iron ore and typical siliceous gangue jasper.Realize the separation of two kinds of mineral, and solve the problem that cation medicament foam is clamminess.Make cation reverse flotation technique obtain practical application in floatation of iron ore industry.
The object of the invention is achieved through the following technical solutions: synthetic multiple polyamines ethers cation-collecting agent, estimate its floatability to jasper by float test, determine its carbochain length and add the number of amido, add by a certain percentage surfactant and foam modifier, and then be mixed with a kind of effective combination medicament.Select suitable iron ore inhibitor, realize separating of iron ore and jasper under arbitrary natural temperature.
Concrete steps of the present invention
1, prepare alkyl polyamine ether medicament:
The first step is by C
8~ C
18fatty alcohol with NaOH or KOH, react, obtain sodium alkoxide or potassium alcoholate catalyst; Under this catalyst action, make the fine and C of propylene
8~ C
18fatty alcohol in molar ratio 1:1 to obtain the intermediate product alkyl ether 40 ℃ ~ 45 ℃ polymerizations fine;
Second step, by the fine input autoclave of alkyl ether, is made catalyst with amorphous nickel, controls reaction pressure 2.0 ~ 3.0Mpa, and 135 ℃ ~ 175 ℃ of temperature, pass into high pressure hydrogen, reacts 2 hours, obtains alkyl monoamine ether; The alkyl monoamine ether of take can obtain alkyl diamine ether as raw material repeats above two-step reaction, and the alkyl diamine ether of take can obtain alkyl three amidogen ethers as raw material repeats above two-step reaction again; By the synthetic required alkyl polyamine ether product of this method.
2, cation combined capturing and collecting agent preparation: by adopting various alkyl polyamine ether and acetic acid, ester combination, obtain good jasper flotation collector, alkyl polyamine ether: acetic acid: ester=100: 5 ~ 20: 5 ~ 20; Alkyl polyamine ether general formula is R-O-[(CH
2)
3nH
2]
n-(CH
2)
3nH
2, wherein R is C
8~ C
18fatty alcohol; N=1,2,3; Acetic acid CH
3cOOH; Ester is R
1oR
2, R
1-C
6~ C
12, R
2-C
2.
3, with this cation combined capturing and collecting agent, be used in conjunction with starch, process Jiuquan steel enterprise Co., Ltd Orebody in Jingtieshan roasted ore; Just can be by the emersions such as gangue jasper wherein, and iron ore is stayed in flotation cell and is become iron ore concentrate.In flotation Orebody in Jingtieshan roasted ore, the cation combined capturing and collecting agent of gangue jasper composition mass ratio is: alkyl diamine ether: acetic acid: ester=100: 17.5: 16, wherein the molecular structure CH of alkyl diamine ether
3(CH
2)
11o (CH
2)
3nH
2(CH
2)
3nH
2; Acetic acid CH
3cOOH; The molecular formula of ester is CH
3(CH
2)
7oCH
2cH
3; The baked iron ore of cation combined capturing and collecting agent consumption 180 ~ 200g/t; Add the baked iron ore of adjusting agent cornstarch 600g/t simultaneously.Reverse flotation Jiuquan steel enterprise Co., Ltd roasted ore magnetic concentrate, with this cation combined capturing and collecting agent, make the iron ore inhibitor with starch, adopt the one roughing primary cleaning to scan for three times and chats order Returning process, carry out flotation operation at natural temperature, head grade T the whole year
fe54.49wt% obtains the iron ore concentrate index and is: productive rate 82.50%, T
fe62.17wt%, the rate of recovery 94.13%, tailings grade is only T
fe18.28wt%.This cation combined capturing and collecting agent has shown good separation selectivity and resistance to low temperature.
characteristics of the present invention:
1, to the hard burned iron ore of process with containing the ferrosilicate jasper, certain variation has occurred in the natural performance on its surface, evidence jasper and iron ore are very poor with traditional medicament separation selectivity, so last century the seventies also once carried out Research on Flotation, due to the bad and not industrialization of sorting.Use combined capturing and collecting agent of the present invention can obtain good separating effect, can carry Fe and reducing Si for Jiuquan steel enterprise Co., Ltd and play a significant role.
2, originally
the cation combined capturing and collecting agentcan prepare in advance, easy to use, medicament forms at floatation process the requirement that foam volume meets flotation, and spumescence is crisp, and good froth breaking makes whole flow operations smoothness, and the foam volume that not there will be traditional medicament to produce is excessive, froth breaking difficulty, the phenomenon of often running groove.
3, carry Fe and reducing Si effective, in Jiuquan steel enterprise Co., Ltd, the ore dressing plant test is used this
the cation combined capturing and collecting agent, can make iron ore concentrate T
feimprove the 8.0wt% left and right, SiO
2reduce the 10.0wt% left and right.
4, originally
the cation combined capturing and collecting agentselective strong, Jiuquan region containing high Ca
2+, Mg
2+ion hard water, do not affect separating effect, can use arbitrary temperature of 5 ℃ ~ 40 ℃, do not need to heat to ore deposit, realizes energy-saving and emission-reduction.
The accompanying drawing explanation
Fig. 1 combined capturing and collecting agent sorting of the present invention artificial mixed ore schematic flow sheet
Wherein mixing ore deposit is the iron ore minal T after the Orebody in Jingtieshan roasting
fe66. 5% and the jasper minal by weight 80: 20, mix.
The schematic flow sheet of Fig. 2 combined capturing and collecting agent reverse flotation of the present invention Jiuquan steel enterprise Co., Ltd magnetic concentrate
.
The specific embodiment
Below by artificial mixed ore and actual mineral floating Processing Example are illustrated to this
cationthe effect of combined capturing and collecting agent.
Embodiment 1: the artificial mixed ore sorting
With the iron ore minal T after the Orebody in Jingtieshan roasting
fe66. 5% and the jasper minal by weight being mixed at 80: 20, by following regime of agent and process conditions flotation.
in the cation combined capturing and collecting agentalkyl diamine ether: acetic acid: ester mass ratio=100: 17.5: 16, wherein the molecular structure CH of alkyl diamine ether
3(CH
2)
11o (CH
2)
3nH
2(CH
2)
3nH
2; Molecular acid formula CH
3cOOH; Ester is CH
3(CH
2)
7oCH
2cH
3;
this cation combined capturing and collecting agentconsumption 150 g/t mixing ore deposits; Adjusting agent cornstarch consumption 500g/t mixing ore deposit.
Mix ore deposit 200g and add flotation device, pulp density 40%, add starch 500g/t mixing ore deposit, stirs 3min, then adds
cationcombined capturing and collecting agent 150g/t mixing ore deposit, after stirring 3min, air flotation 6min, obtain the concentrate and tailings index as following table 1.
Table 1 mixes ore deposit flotation results wt %
| The product title | Productive rate | The iron grade | Iron recovery |
| Concentrate | 77.05 | 62.31 | 90.24 |
| Mine tailing | 22.95 | 22.61 | 9.76 |
| Add up to | 100.00 | 53.2 | 100.00 |
As can be seen from Table 1, adopt
this cationthe mixture of combined capturing and collecting agent flotation roasting iron mineral and jasper, reverse flotation is respond well, only just can be from T through a concentrate through reverse flotation grade
fe53.2wt% rises to T
fe62.31wt%; And T in mine tailing
febe only 22.61wt%,
this cationcombined capturing and collecting agent has demonstrated good selective to jasper.
Embodiment 2: the magnetic concentrate of Jiuquan steel enterprise Co., Ltd roasted ore of take is raw material, and its ore deposit facies analysis is as a result shown in table 2.
The ore deposit facies analysis of table 2 magnetic concentrate is wt % as a result
| Magnetic iron ore | The magnesium sifbergite | Speculum iron | Siderite | Jasper | Quartzy | Ankerite | Phyllite |
| 58.56 | 22.80 | 1.70 | 0.80 | 9.52 | 2.40 | 1.20 | 2.52 |
Ore deposit facies analysis result is known, and in magnetic concentrate, front four iron-bearing minerals are valuable mineral, and latter four are gangue, are the mineral that reverse flotation removes.And jasper proportion maximum in the gangue ore deposit reaches 60%, can think that the reverse flotation emphasis removes jasper and other siliceous gangues exactly.
The flow process of combined capturing and collecting agent reverse flotation Jiuquan steel enterprise Co., Ltd magnetic concentrate as shown in Figure 2.Adopt the one roughing primary cleaning to scan for three times and chats order Returning process.
cationthe combined capturing and collecting agent formula is; Alkyl diamine ether: acetic acid: ester mass ratio=100: 17.5: 16, wherein the molecular structure CH of alkyl diamine ether
3(CH
2)
11o (CH
2)
3nH
2(CH
2)
3nH
2; Molecular acid is CH
3cOOH; Ester is CH
3(CH
2)
7oCH
2cH
3.
Table 3
cationcombined capturing and collecting agent closed-circuit test index wt%
| The product title | Productive rate | The iron grade | Iron recovery |
| Concentrate | 77.05 | 62.31 | 90.24 |
| Mine tailing | 22.95 | 22.61 | 9.76 |
| Add up to | 100.00 | 53.2 | 100.00 |
From table 3, data can be found out, this
cationthe combined capturing and collecting agent flotation effect is good, and concentrate grade is from T
fe54.49wt% brings up to T
fe62.17wt%, the rate of recovery is up to 94.13%, and tailings grade is only T
fe18.28wt%, realized separating of the riders such as jasper and iron ore well.
Should
cationeffect is better than original GE609 to combined capturing and collecting agent for Jiuquan steel enterprise Co., Ltd THE INDUSTRIAL TRIAL this year; Mainly shown following advantage with GE609: (1) has reduced collector dosage; (2) improved flotation selective, concentrate grade increases; (3) improved foaming properties, the successful that selects again of froth pulp is improved, tailings grade is minimized.The said firm prepares to apply this in industrial production
cationcombined capturing and collecting agent.
Claims (2)
1. a cation combined capturing and collecting agent is characterized in that: this collecting agent is suitable as jasper, quartz, silicate and, containing the flotation of ferrosilicate, its quality formula is: alkyl polyamine ether: acetic acid: ester=100: 5 ~ 20: 5 ~ 20; Wherein alkyl polyamine ether makes as follows, and preparation process is:
The first step is by C
8~ C
18fatty alcohol with NaOH or KOH, react, obtain sodium alkoxide or potassium alcoholate catalyst; Under this catalyst action, make the fine and C of propylene
8~ C
18fatty alcohol in molar ratio 1:1 to obtain the intermediate product alkyl ether 40 ℃ ~ 45 ℃ polymerizations fine;
Second step, by the fine input autoclave of alkyl ether, is made catalyst with amorphous nickel, controls reaction pressure 2.0 ~ 3.0Mpa, and 135 ℃ ~ 175 ℃ of temperature, pass into hydrogen, and hydrogenation reaction 90 ~ 120min obtains alkyl monoamine ether; The alkyl monoamine ether of take can obtain alkyl diamine ether as raw material repeats above two-step reaction, and the alkyl diamine ether of take obtains alkyl three amidogen ethers as raw material repeats above two-step reaction again; By the synthetic required alkyl polyamine ether product of this method;
Ester is R
1cOOR
2, R wherein
1for C
6~ C
12, R
2for C
2.
2. the application of cation combined capturing and collecting agent as claimed in claim 1 is characterized in that: be applied to reverse flotation Jiuquan steel enterprise Co., Ltd roasted ore magnetic concentrate, head grade T
fe54.49wt%, with this cation combined capturing and collecting agent, starch is made the iron ore inhibitor, adopts the one roughing primary cleaning to scan for three times and chats order Returning process, and carry out flotation operation at natural temperature the whole year, obtains the iron ore concentrate index and be: productive rate 82.50%, T
fe62.17wt%, the rate of recovery 94.13%, tailings grade is only T
fe18.28wt%.
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| CN103301950B (en) * | 2013-05-22 | 2016-02-03 | 东北大学 | A kind of combination cation-collecting agent of hematite Counterfloatating desiliconization |
| CN107362904A (en) * | 2017-08-28 | 2017-11-21 | 鞍钢集团矿业有限公司 | A kind of Combination of magnetic separation flotation ore-dressing technique for handling iron tailings |
| CN107442292B (en) * | 2017-08-30 | 2019-08-13 | 玉溪大红山矿业有限公司 | A kind of upgrading drop silicon of silicate-type hematite-limonite rougher concentration top-ups choosing method |
| CN114160313B (en) * | 2021-12-06 | 2023-01-24 | 中南大学 | Lepidolite flotation collector and application thereof |
| CN115228623A (en) * | 2022-07-22 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for simultaneously reducing P and Mn contents in ferrovanadium alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422928A (en) * | 1981-03-09 | 1983-12-27 | Exxon Research & Engineering Co. | Silica flotation collectors derived from isononyl alcohol |
| CN101088623A (en) * | 2007-06-28 | 2007-12-19 | 武汉理工大学 | Mineral floating collecting agent and its prepn process |
| CN102009000A (en) * | 2010-07-27 | 2011-04-13 | 北京天任瑞创科技发展有限公司 | Method for preparing and using collecting agent for gold, silver and platinum family elements |
-
2012
- 2012-05-14 CN CN 201210146760 patent/CN102698876B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422928A (en) * | 1981-03-09 | 1983-12-27 | Exxon Research & Engineering Co. | Silica flotation collectors derived from isononyl alcohol |
| CN101088623A (en) * | 2007-06-28 | 2007-12-19 | 武汉理工大学 | Mineral floating collecting agent and its prepn process |
| CN102009000A (en) * | 2010-07-27 | 2011-04-13 | 北京天任瑞创科技发展有限公司 | Method for preparing and using collecting agent for gold, silver and platinum family elements |
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