CN103990548A - Method for flotation and enrichment of magnesium oxide mineral - Google Patents

Method for flotation and enrichment of magnesium oxide mineral Download PDF

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Publication number
CN103990548A
CN103990548A CN201410233754.1A CN201410233754A CN103990548A CN 103990548 A CN103990548 A CN 103990548A CN 201410233754 A CN201410233754 A CN 201410233754A CN 103990548 A CN103990548 A CN 103990548A
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China
Prior art keywords
mineral
magnesia
magnesium oxide
floating
enriching
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Pending
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CN201410233754.1A
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Chinese (zh)
Inventor
卜显忠
王阳
宛鹤
张崇辉
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN201410233754.1A priority Critical patent/CN103990548A/en
Publication of CN103990548A publication Critical patent/CN103990548A/en
Pending legal-status Critical Current

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Abstract

Provided is a method for flotation and enrichment of a magnesium oxide mineral. Sulphuric acid is adopted as a pH modifier, acidized water glass is adopted as a gangue mineral inhibitor, and oleic acid and sodium dodecyl sulfate serve as collecting agents of the magnesium oxide mineral. The magnesium oxide mineral can be effectively recovered; under the condition that the magnesium oxide grade of the fed mineral ranges from 45.12% to 53.86%, roughing is conducted once, scavenging is conducted three times, concentration is conducted three times, and therefore magnesium oxide concentrates can be obtained, wherein the magnesium oxide grade of the magnesium oxide concentrates ranges from 92.20% to 94.93%, and the recovery rate of the magnesium oxide concentrates ranges from 83.50% to 87.11%. According to the method for flotation and enrichment of the magnesium oxide mineral under the acidic condition, the high magnesium oxide grade and the high recovery rate can be achieved, the flow structure is simple, and agent consumption and energy consumption are low.

Description

A kind of method of floating and enriching of magnesia mineral
Technical field
The present invention relates to a kind of method of floating and enriching of magnesia mineral.
Background technology
In the conventional flotation process of magnesia mineral, by adding after gangue mineral inhibitor, the general aliphatic acid direct flotation that adopts, the methods such as high-carbon long-chain SH base collecting agent flotation, these method for floating not only with magnesia ore in fragmentation, the number that produces sludge in grinding process is relevant, but also relevant with the contamination of gangue mineral, still there is direct relation with the floatability of gangue mineral simultaneously, the process structure that so not only reclaims magnesia mineral is complicated, medicament kind is many and consumption is large, cost recovery is high, and magnesia mineral recovery rate is low, affected the recycling of magnesia mineral resources, only have at present high-grade magnesia mineral to reclaim by calcining rear direct-reduction, more low-grade magnesia mineral seldom have the report of recovery.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of method of floating and enriching of magnesia mineral, magnesia mineral be can reclaim, and higher magnesia concentrate grade and the rate of recovery obtained.
To achieve these goals, the technical solution used in the present invention is:
A method for the floating and enriching of magnesia mineral, after ore grinding to mineral monomer dissociates, the pulp density of sizing mixing is 24-36%.Add adjusting agent to adjust slurry pH to 6~6.5, then add gangue mineral inhibitor, finally add oleic acid and lauryl sodium sulfate as combined capturing and collecting agent, by one roughing, scan triple cleaning for three times and obtain magnesia concentrate.
Described slurry pH adjusting agent is sulfuric acid, and described gangue mineral inhibitor is acidified sodium silicate.
Described h 2 so 4 concentration is 10~20%, and consumption is 1000~1500g/t; Acidified sodium silicate mass concentration is 10~20%, and consumption is 2000~3000g/t; Oleic acid mass concentration is 5~10%, and consumption is 1000~1500g/t; Lauryl sodium sulfate mass concentration is 5~10%, and consumption is 300~500g/t.The part by weight of the section of roughly selecting oleic acid used and lauryl sodium sulfate is (3~5): 1.Before scanning, need to add collecting agent oleic acid 300~500g/t.
Roughly select time 3-5 minute, scan time 5-8 minute, selected time 3-5 minute.
Compared with prior art, the invention has the beneficial effects as follows:
1, under acid condition, by flotation, can make magnesia mineral obtain enrichment, and magnesia mineral are obtained compared with high-grade and the rate of recovery.
2, flowage structure of the present invention is simple, and dosing is few, less energy consumption, effectively enrichment oxidation magnesium mineral.
Accompanying drawing explanation
Fig. 1 is the flow chart of method for floating of the present invention.
The specific embodiment
Below in conjunction with embodiment, describe embodiments of the present invention in detail.
Embodiment 1
First example of the floating and enriching method of magnesia mineral of the present invention, comprises the steps
1. raw mineral materials:
In ore used, content of magnesia is 45.12%, calcium 14.61%, silicon 11.35%, iron 10.60%, and material phase analysis shows, and magnesium mainly exists with magnesia form, and gangue mineral mainly exists with carbonate, silicate form, separately has part limonite.
2. the total consumption of floating agent and operating condition:
In floatation process, after ore ore grinding to mineral monomer is dissociated, after adding sulfuric acid and adjusting slurry pH and be 6~6.5, then add acidified sodium silicate to suppress gangue mineral, finally add oleic acid and lauryl sodium sulfate flotation magnesia mineral, by one roughing, scan triple cleaning for three times and obtain magnesia concentrate.By above-mentioned technological parameter, test, show to adopt above technique and medicament condition can effectively reclaim magnesia mineral; Giving ore deposit content of magnesia, be under 45.12% condition, obtaining content of magnesia is 92.20%, the magnesia concentrate of the rate of recovery 83.50%.
Embodiment 2
Second example of the floating and enriching method of magnesia mineral of the present invention, comprises the steps
1. raw mineral materials:
In ore used, content of magnesia is 49.73%, calcium 15.17%, silicon 10.39%, iron 14.26%, and material phase analysis shows, and magnesium mainly exists with magnesia form, and gangue mineral mainly exists with carbonate, silicate form, separately has part limonite.
2. the total consumption of floating agent and operating condition:
In floatation process, after ore ore grinding to mineral monomer is dissociated, after adding sulfuric acid and adjusting slurry pH and be 6~6.5, then add acidified sodium silicate to suppress gangue mineral, finally add oleic acid and lauryl sodium sulfate flotation magnesia mineral, by one roughing, scan triple cleaning for three times and obtain magnesia concentrate.By above-mentioned technological parameter, test, show to adopt above technique and medicament condition can effectively reclaim magnesia mineral; Giving ore deposit content of magnesia, be under 49.73% condition, obtaining content of magnesia is 93.70%, the magnesia concentrate of the rate of recovery 85.80%.
Embodiment 3
The 3rd example of the floating and enriching method of magnesia mineral of the present invention, comprises the steps
1. raw mineral materials:
In ore used, content of magnesia is 53.86%, calcium 10.45%, silicon 15.02%, iron 8.94%, and material phase analysis shows, and magnesium mainly exists with magnesia form, and gangue mineral mainly exists with carbonate, silicate form, separately has part limonite.
2. the total consumption of floating agent and operating condition:
In floatation process, after ore ore grinding to mineral monomer is dissociated, after adding sulfuric acid and adjusting slurry pH and be 6~6.5, then add acidified sodium silicate to suppress gangue mineral, finally add oleic acid and lauryl sodium sulfate flotation magnesia mineral, by one roughing, scan triple cleaning for three times and obtain magnesia concentrate.By above-mentioned technological parameter, test, show to adopt above technique and medicament condition can effectively reclaim magnesia mineral; Giving ore deposit content of magnesia, be under 53.86% condition, obtaining content of magnesia is 94.93%, the magnesia concentrate of the rate of recovery 87.11%.

Claims (8)

1. the method for the floating and enriching of magnesia mineral, it is characterized in that, after ore grinding to mineral monomer dissociates, size mixing, utilize adjusting agent to adjust slurry pH to 6~6.5, then add gangue mineral inhibitor, finally add oleic acid and lauryl sodium sulfate as combined capturing and collecting agent, by one roughing, scan triple cleaning for three times and obtain magnesia concentrate.
2. the method for the floating and enriching of magnesia mineral according to claim 1, is characterized in that, obtains the ore pulp that concentration is 24-36% after sizing mixing.
3. the method for the floating and enriching of magnesia mineral according to claim 1, is characterized in that, described adjusting agent is sulfuric acid, and gangue mineral inhibitor is acidified sodium silicate.
4. the method for the floating and enriching of magnesia mineral according to claim 3, is characterized in that, described h 2 so 4 concentration is 10~20%, and consumption is 1000~1500g/t; Acidified sodium silicate mass concentration is 10~20%, and consumption is 2000~3000g/t.
5. according to the method for the floating and enriching of claim magnesia mineral according to claim 1, it is characterized in that, the part by weight of oleic acid used and lauryl sodium sulfate is (3~5): 1.
6. according to the method for the floating and enriching of the magnesia mineral described in the arbitrary claim of claim 1 to 5, it is characterized in that, described oleic acid mass concentration is 5~10%, and consumption is 1000~1500g/t; Lauryl sodium sulfate mass concentration is 5~10%, and consumption is 300~500g/t.
7. according to the method for the floating and enriching of claim magnesia mineral according to claim 1, it is characterized in that, before scanning, add collecting agent oleic acid 300~500g/t.
8. according to the method for the floating and enriching of claim magnesia mineral according to claim 1, it is characterized in that, roughly select time 3-5 minute, scan time 5-8 minute, selected time 3-5 minute.
CN201410233754.1A 2014-05-29 2014-05-29 Method for flotation and enrichment of magnesium oxide mineral Pending CN103990548A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711648A (en) * 2019-11-21 2020-01-21 湖南新龙矿业有限责任公司 Method for separating carbon-containing gold-antimony-arsenic mixed gold ore
CN110882835A (en) * 2019-11-05 2020-03-17 水口山有色金属有限责任公司 Method for increasing silicon content in lead-zinc tailings
CN110882836A (en) * 2019-11-05 2020-03-17 水口山有色金属有限责任公司 Method for reducing magnesium content in lead-zinc tailings

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133038A (en) * 1975-05-26 1979-01-02 Antti Niemi Method of constructing a continuously operable flotation concentration plant
CN102716806A (en) * 2012-06-14 2012-10-10 昆明川金诺化工股份有限公司 Method for simultaneously removing magnesium oxide, ferric oxide and aluminum oxide sesquioxide in middle-grade and low-grade phosphate ores by adopting double-reverse floatation process
CN103272702A (en) * 2013-06-08 2013-09-04 北京矿冶研究总院 Flotation collector for obtaining high-grade magnesite concentrate from low-grade magnesite and method thereof
CN103386360A (en) * 2013-07-23 2013-11-13 沈阳鑫博工业技术发展有限公司 Floatation method for low-grade magnesite
CN103691563A (en) * 2013-12-11 2014-04-02 广西大学 Flotation separation method for aedelforsite and quartz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133038A (en) * 1975-05-26 1979-01-02 Antti Niemi Method of constructing a continuously operable flotation concentration plant
CN102716806A (en) * 2012-06-14 2012-10-10 昆明川金诺化工股份有限公司 Method for simultaneously removing magnesium oxide, ferric oxide and aluminum oxide sesquioxide in middle-grade and low-grade phosphate ores by adopting double-reverse floatation process
CN103272702A (en) * 2013-06-08 2013-09-04 北京矿冶研究总院 Flotation collector for obtaining high-grade magnesite concentrate from low-grade magnesite and method thereof
CN103386360A (en) * 2013-07-23 2013-11-13 沈阳鑫博工业技术发展有限公司 Floatation method for low-grade magnesite
CN103691563A (en) * 2013-12-11 2014-04-02 广西大学 Flotation separation method for aedelforsite and quartz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110882835A (en) * 2019-11-05 2020-03-17 水口山有色金属有限责任公司 Method for increasing silicon content in lead-zinc tailings
CN110882836A (en) * 2019-11-05 2020-03-17 水口山有色金属有限责任公司 Method for reducing magnesium content in lead-zinc tailings
CN110711648A (en) * 2019-11-21 2020-01-21 湖南新龙矿业有限责任公司 Method for separating carbon-containing gold-antimony-arsenic mixed gold ore

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Application publication date: 20140820