CN101985114A - Andalusite ore dressing method - Google Patents
Andalusite ore dressing method Download PDFInfo
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- CN101985114A CN101985114A CN2010105537630A CN201010553763A CN101985114A CN 101985114 A CN101985114 A CN 101985114A CN 2010105537630 A CN2010105537630 A CN 2010105537630A CN 201010553763 A CN201010553763 A CN 201010553763A CN 101985114 A CN101985114 A CN 101985114A
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Abstract
The invention relates to an andalusite ore dressing method. The invention adopts a technical that the method comprises: firstly, grinding andalusite ore to be dressed till the particle sizes of more than 85 weight percent of the andalusite ore subjected to ore grinding operation are less than 0.076 millimeters, removing sludge of which the particle size is less than 0.038 millimeters from the slurry, which is obtained after ore grinding, in a spiral chute, and decarbonizing the slurry from which the sludge is removed by using a flotation method; and secondly, processing the decarbonized slurry by a process of stepwise medicament application, stepwise rough concentration and rough concentrate centralized concentration, obtaining andalusite flotation concentrate, performing intense magnetic separation of the andalusite flotation concentrate to remove iron-containing impurities, and obtaining the andalusite concentrate. The method has the characteristics of simple process, easy operation, low cost, high andalusite concentrate grade and high recovery rate; the aluminum oxide grade of the obtained andalusite concentrate is over 55 percent, the iron trioxide impurity content of the obtained andalusite concentrate is less than 1.5 weight percent, and the andalusite ore recovery rate reaches over 66 percent; and thus, the andalusite concentrate is in accordance with China's standards for grade-II andalusite concentrate and can be used as a filler for refractory materials.
Description
Technical field
The invention belongs to the technique of preparing field.Be specifically related to a kind of andalusite mine beneficiation method.
Background technology
Andalusite belongs to high aluminum mineral, can make high grade refractory, silico-aluminum, alusil alloy, aluminium oxide etc.The andalusite ore is few because of containing the andalusite amount, can not be directly used in industry, in order to improve alumina content, and makes impurity content be reduced to the standard that industry allows, and carry out ore dressing to the andalusite ore.
Andalusite is when firing refractory material, and the size of granularity plays an important role.If obtain the brick of specific density, the coarse fraction ratio is big more, and it is few more to reach the used punching press number of times of desired density, if particulate andalusite ratio is big, then to be increased in the punching press number of times in the mould, close specification in the time of goods being reached make with the coarse grain andalusite.Seedy andalusite just can make refractory product that stronger physical strength and apparent density are arranged under load, and one uses the andalusite of 6mm particle diameter, and the granule andalusite is used in restriction; The andalusite particle diameter can descend because of the impure refractory product quality that makes wherein during greater than 12mm, needs suitably fragmentation in case of necessity and removes impurity.Generally speaking, andalusite use department wishes to use the compound of size fractionated, and the coarse grain andalusite constitutes skeleton, and the filling of particulate andalusite wherein, so just can make refractory product have the good high-temperature performance.Therefore, scientific and technical personnel to andalusite ore dressing give the height concern.
Heavymedia separation is the most frequently used method of coarse grain andalusite of producing both at home and abroad at present, and flotation is the method that is used for reclaiming the particulate andalusite.The floatation process of andalusite mainly contains two-stage crushing-secondary grinding-two stages of magnetic separation-table concentration-flotation; Fragmentation-selective milling-screening-magnetic separation-shaking table-flotation; Fragmentation-ore grinding-strong magnetic-heavymedia separation-flotation etc.The shortcoming of these technologies is that the rate of recovery is low, productive rate is low, technological process is complicated, the production cost height.
Summary of the invention
The objective of the invention is to overcome above-mentioned technological deficiency, purpose provides that a kind of technology is simple, operation easily, cost are low, andalusite concentrate grade height and the high andalusite mine beneficiation method of the rate of recovery.
For achieving the above object, the technical solution used in the present invention such as following step:
The first step, ore grinding: andalusite mine stone mill ore deposit to the granularity that will enter ore-dressing practice is to enter more than the andalusite ore 85wt% of grinding operation less than 0.076 millimeter;
Second step, desliming: the ore pulp behind the ore grinding is sloughed less than 0.038 millimeter sludge through spiral chute;
The 3rd step, decarburization: the ore pulp of sloughing behind the sludge is adopted the method for floating decarburization;
The 4th step, flotation andalusite: adopt dosing-stage in stage to roughly select-the concentrated dressing process of rough concentrate to the ore pulp after the decarburization, this technology is to roughly select the triple cleaning flow process three times, promptly roughly selecting the operation mine tailing for the third time is true tailings, roughly select the concentrate merging for three times and enter selected operation together, selected chats returns and roughly selects operation for the first time for the first time, selected chats turns back to selected operation for the first time for the second time, selected for the third time chats turns back to selected operation for the second time, form the closed-loop path, selected for the third time concentrate is the andalusite flotation concentrate;
Roughly select for three times and all adopt modified anion starch to make inhibitor, the addition of modified anion starch is respectively: roughly selecting for the first time is 120～140 gram/tons, and roughly selecting for the second time is 80～100 gram/tons, and roughly selecting for the third time is 40～60 gram/tons; Sulfuric acid is done the adjustment agent of three primary slurry pH values, and roughly selecting at every turn and all transferring to slurry pH is 3～4; Petroleum sodium sulfonate is made the flotation collector of roughly selecting three times, and the addition of flotation collector is respectively: roughly selecting for the first time is 1600～1800 gram/tons, and roughly selecting for the second time is 1600～1800 gram/tons, and roughly selecting for the third time is 1200～1400 gram/tons; 2
#Oil is made the foaming agent of roughly selecting three times, roughly selects all to add 2 at every turn
#Oil, 2
#The addition of oil is 20～30 gram/tons; Triple cleaning only adds pH values of pulp and adjusts agent sulfuric acid, and the pH value that at every turn transfers to selected ore pulp is 3～4;
The 5th step, high intensity magnetic separation: the andalusite flotation concentrate is carried out high intensity magnetic separation, remove ferrous contaminants, promptly get the andalusite concentrate.
The described main chemical compositions that enters the andalusite ore of ore-dressing practice is: Al
2O
3Be 20～55wt%, Fe
2O
3Be 5～10wt%, SiO
2Be 36～65wt%, TiO
2Be 0.1～1wt%, K
2O is 0.1～4wt%, Na
2O is 0.1～2wt%, and C is 0.1～1wt%.
The flotation with medicament of described method for floating is kerosene and 2
#Oil; The kerosene addition is 120～140 gram/tons, 2
#The oil addition is 40～50 gram/tons.
Since adopt technique scheme, advantages of simple technological process of the present invention, and environmental pollution is little; Conventional dose is adopted in flotation, and collecting agent adopts petroleum sodium sulfonate, obtain and low price because the industrial products of sulfonate are easy, so cost is low.With the ore-dressing technique method that reclaims the particulate andalusite, adopt after to raw ore desliming decarburization and roughly select the triple cleaning flotation flowsheet three times, promptly roughly selecting the operation mine tailing for the third time is true tailings, selected chats returns and roughly selects operation for the first time for the first time, selected chats turns back to selected operation for the first time for the second time, selected for the third time chats turns back to selected operation for the second time, form the closed-loop path, selected for the third time concentrate is the andalusite flotation concentrate, the andalusite flotation concentrate is carried out high intensity magnetic separation again one time, obtain the andalusite final concentrate.The grade of the alundum (Al of andalusite final concentrate is more than 55%, and the impurity di-iron trioxide is less than 1.5wt%, and the andalusite rate of recovery reaches more than 66%, reaches national seconds andalusite concentrate standard, can make the filler of refractory material.
Therefore, simple, the operation easily of technology of the present invention, cost are low, andalusite concentrate grade height and rate of recovery height.
The specific embodiment:
The invention will be further described below in conjunction with the specific embodiment, is not the restriction to its protection domain:
The described andalusite ore that enters ore-dressing practice of this specific embodiment is that the andalusite raw ore is thrown the qualified concentrate containing that tail-high intensity magnetic separation obtains a part of coarse grain through fragmentation-scrubbing-desliming-dense media, and its main chemical compositions is: Al
2O
3Be 20～55wt%, Fe
2O
3Be 5～10wt%, SiO
2Be 36～65wt%, TiO
2Be 0.1～1wt%, K
2O is 0.1～4wt%, Na
2O is 0.1～2wt%, and C is 0.1～1wt%.
Embodiment 1
A kind of andalusite mine beneficiation method, the beneficiation method of present embodiment comprises the steps:
The first step, ore grinding: andalusite mine stone mill ore deposit to the granularity that will enter ore-dressing practice is to enter more than the andalusite ore 85wt% of grinding operation less than 0.076 millimeter;
Second step, desliming: the ore pulp behind the ore grinding is sloughed less than 0.038 millimeter sludge through spiral chute;
The 3rd step, decarburization: the ore pulp of sloughing behind the sludge is adopted the method for floating decarburization;
The 4th step, flotation andalusite: adopt dosing-stage in stage to roughly select-the concentrated dressing process of rough concentrate to the ore pulp after the decarburization, this technology is to roughly select the triple cleaning flow process three times, promptly roughly selecting the operation mine tailing for the third time is true tailings, roughly select the concentrate merging for three times and enter selected operation together, selected chats returns and roughly selects operation for the first time for the first time, selected chats turns back to selected operation for the first time for the second time, selected for the third time chats turns back to selected operation for the second time, form the closed-loop path, selected for the third time concentrate is the andalusite flotation concentrate, and the technical indicator of andalusite flotation concentrate sees Table 1;
The 5th step, high intensity magnetic separation: the andalusite flotation concentrate is carried out high intensity magnetic separation, remove ferrous contaminants, promptly get the andalusite concentrate, the technical indicator of andalusite concentrate sees Table 1.
The floating agent of the method for floating decarburization of present embodiment is kerosene and 2
#Oil.The kerosene addition is 130～140 gram/tons, 2
#The oil addition is 45～50 gram/tons.
Dosing-the stage in stage of present embodiment roughly selects-and to concentrate dressing process be to roughly select the triple cleaning flow process three times to rough concentrate; Roughly select for three times and all adopt modified anion starch to make inhibitor, the addition of modified anion starch is respectively: roughly selecting for the first time is 120～130 gram/tons, and roughly selecting for the second time is 80～90 gram/tons, and roughly selecting for the third time is 40～50 gram/tons; Sulfuric acid is done the adjustment agent of three primary slurry pH values, and roughly selecting at every turn and all transferring to slurry pH is 3～4; Petroleum sodium sulfonate is made the flotation collector of roughly selecting three times, and the addition of flotation collector is respectively: roughly selecting for the first time is 1600～1700 gram/tons, and roughly selecting for the second time is 1600～1700 gram/tons, and roughly selecting for the third time is 1200～1300 gram/tons; 2
#Oil is made the foaming agent of roughly selecting three times, roughly selects all to add 2 at every turn
#Oil, 2
#The addition of oil is 20～25 gram/tons; Triple cleaning only adds pH values of pulp and adjusts agent sulfuric acid, and the pH value that at every turn transfers to selected ore pulp is 3～4.
Table 1 andalusite flotation concentrate and andalusite concentrate technical indicator:
Embodiment 2
A kind of andalusite mine beneficiation method: the beneficiation method of present embodiment comprises the steps:
The first step, ore grinding: andalusite mine stone mill ore deposit to the granularity that will enter ore-dressing practice is to enter more than the andalusite ore 85wt% of grinding operation less than 0.076 millimeter;
Second step, desliming: the ore pulp behind the ore grinding is sloughed less than 0.038 millimeter sludge through spiral chute;
The 3rd step, decarburization: the ore pulp of sloughing behind the sludge is adopted the method for floating decarburization;
The 4th step, flotation andalusite: adopt dosing-stage in stage to roughly select-the concentrated dressing process of rough concentrate to the ore pulp after the decarburization, this technology is to roughly select the triple cleaning flow process three times, promptly roughly selecting the operation mine tailing for the third time is true tailings, roughly select the concentrate merging for three times and enter selected operation together, selected chats returns and roughly selects operation for the first time for the first time, selected chats turns back to selected operation for the first time for the second time, selected for the third time chats turns back to selected operation for the second time, form the closed-loop path, selected for the third time concentrate is the andalusite flotation concentrate; The technical indicator of andalusite flotation concentrate sees Table 2;
The 5th step, high intensity magnetic separation: the andalusite flotation concentrate is carried out high intensity magnetic separation, remove ferrous contaminants, promptly get the andalusite concentrate, the technical indicator of andalusite concentrate sees Table 2.
The floating agent of the method for floating decarburization of present embodiment is kerosene and 2
#Oil.The kerosene addition is 120～130 gram/tons, 2
#The oil addition is 40～45 gram/tons.
Dosing-the stage in stage of present embodiment roughly selects-and to concentrate dressing process be to roughly select the triple cleaning flow process three times to rough concentrate; Roughly select for three times and all adopt modified anion starch to make inhibitor, the addition of modified anion starch is respectively: roughly selecting for the first time is 130～140 gram/tons, and roughly selecting for the second time is 90～100 gram/tons, and roughly selecting for the third time is 50～60 gram/tons; Sulfuric acid is done the adjustment agent of three primary slurry pH values, and roughly selecting at every turn and all transferring to slurry pH is 3～4; Petroleum sodium sulfonate is made the flotation collector of roughly selecting three times, and the addition of flotation collector is respectively: roughly selecting for the first time is 1700～1800 gram/tons, and roughly selecting for the second time is 1700～1800 gram/tons, and roughly selecting for the third time is 1300～1400 gram/tons; 2
#Oil is made the foaming agent of roughly selecting three times, roughly selects all to add 2 at every turn
#Oil, 2
#The addition of oil is 25～30 gram/tons; Triple cleaning only adds pH values of pulp and adjusts agent sulfuric acid, and the pH value that at every turn transfers to selected ore pulp is 3～4.
Table 2 andalusite flotation concentrate and andalusite concentrate technical indicator:
This specific embodiment advantages of simple technological process, environmental pollution is little; Conventional dose is adopted in flotation, and collecting agent adopts petroleum sodium sulfonate, obtain and low price because the industrial products of sulfonate are easy, so cost is low.With the ore-dressing technique method that reclaims the particulate andalusite, adopt after to raw ore desliming decarburization and roughly select the triple cleaning flotation flowsheet three times, rougher tailings is a true tailings, and selected chats returns roughly selects operation, the andalusite flotation concentrate is carried out high intensity magnetic separation again one time, obtain the andalusite final concentrate.The grade of the alundum (Al of andalusite final concentrate is more than 55%, and the impurity di-iron trioxide is less than 1.5wt%, and the andalusite rate of recovery reaches more than 66%, reaches national seconds andalusite concentrate standard, can make the filler of refractory material.
Therefore, simple, the operation easily of this specific embodiment technology, cost are low, andalusite concentrate grade height and rate of recovery height.
Claims (3)
1. andalusite mine beneficiation method is characterized in that this beneficiation method such as following step:
The first step, ore grinding: andalusite mine stone mill ore deposit to the granularity that will enter ore-dressing practice is to enter more than the andalusite ore 85wt% of grinding operation less than 0.076 millimeter;
Second step, desliming: the ore pulp behind the ore grinding is sloughed less than 0.038 millimeter sludge through spiral chute;
The 3rd step, decarburization: the ore pulp of sloughing behind the sludge is adopted the method for floating decarburization;
The 4th step, flotation andalusite: adopt dosing-stage in stage to roughly select-the concentrated dressing process of rough concentrate to the ore pulp after the decarburization, this technology is to roughly select the triple cleaning flow process three times, promptly roughly selecting the operation mine tailing for the third time is true tailings, roughly select the concentrate merging for three times and enter selected operation together, selected chats returns and roughly selects operation for the first time for the first time, selected chats turns back to selected operation for the first time for the second time, selected for the third time chats turns back to selected operation for the second time, form the closed-loop path, selected for the third time concentrate is the andalusite flotation concentrate;
Roughly select for three times and all adopt modified anion starch to make inhibitor, the addition of modified anion starch is respectively: roughly selecting for the first time is 120～140 gram/tons, and roughly selecting for the second time is 80～100 gram/tons, and roughly selecting for the third time is 40～60 gram/tons; Sulfuric acid is done the adjustment agent of three primary slurry pH values, and roughly selecting at every turn and all transferring to slurry pH is 3～4; Petroleum sodium sulfonate is made the flotation collector of roughly selecting three times, and the addition of flotation collector is respectively: roughly selecting for the first time is 1600～1800 gram/tons, and roughly selecting for the second time is 1600～1800 gram/tons, and roughly selecting for the third time is 1200～1400 gram/tons; 2
#Oil is made the foaming agent of roughly selecting three times, roughly selects all to add 2 at every turn
#Oil, 2
#The addition of oil is 20～30 gram/tons; Triple cleaning only adds pH values of pulp and adjusts agent sulfuric acid, and the pH value that at every turn transfers to selected ore pulp is 3～4;
The 5th step, high intensity magnetic separation: the andalusite flotation concentrate is carried out high intensity magnetic separation, remove ferrous contaminants, promptly get the andalusite concentrate.
2. andalusite mine beneficiation method according to claim 1 is characterized in that the described main chemical compositions that enters the andalusite ore of ore-dressing practice is: Al
2O
3Be 20～55wt%, Fe
2O
3Be 5～10wt%, SiO
2Be 36～65wt%, TiO
2Be 0.1～1wt%, K
2O is 0.1～4wt%, Na
2O is 0.1～2wt%, and C is 0.1～1wt%.
3. andalusite mine beneficiation method according to claim 1, the flotation with medicament that it is characterized in that described method for floating is kerosene and 2
#Oil; The kerosene addition is 120～140 gram/tons, 2
#The oil addition is 40～50 gram/tons.
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| CN2010105537630A CN101985114A (en) | 2010-11-22 | 2010-11-22 | Andalusite ore dressing method |
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| CN2010105537630A CN101985114A (en) | 2010-11-22 | 2010-11-22 | Andalusite ore dressing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041927A (en) * | 2013-01-09 | 2013-04-17 | 广西大学 | Preparation method of gold-bearing sulfide mineral inhibitor |
| CN103785546A (en) * | 2014-02-20 | 2014-05-14 | 安徽工业大学 | Method for separating quartz from andalusite in floating mode under nearly neutral condition |
| CN104624360A (en) * | 2014-12-24 | 2015-05-20 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
| CN113337706A (en) * | 2021-05-25 | 2021-09-03 | 中国冶金地质总局昆明地质勘查院 | Purification method of andalusite raw ore |
Citations (2)
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| EP0456565A1 (en) * | 1990-05-09 | 1991-11-13 | Denain-Anzin Mineraux Refractaire Ceramique S.A.( Damrec S.N.C.) | Method for enriching andalusite by flotation |
| CN101343189A (en) * | 2008-08-26 | 2009-01-14 | 巩义市五耐科技开发有限公司 | High-purity apyre brick and manufacture method thereof |
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2010
- 2010-11-22 CN CN2010105537630A patent/CN101985114A/en active Pending
Patent Citations (2)
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| EP0456565A1 (en) * | 1990-05-09 | 1991-11-13 | Denain-Anzin Mineraux Refractaire Ceramique S.A.( Damrec S.N.C.) | Method for enriching andalusite by flotation |
| CN101343189A (en) * | 2008-08-26 | 2009-01-14 | 巩义市五耐科技开发有限公司 | High-purity apyre brick and manufacture method thereof |
Non-Patent Citations (2)
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|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041927A (en) * | 2013-01-09 | 2013-04-17 | 广西大学 | Preparation method of gold-bearing sulfide mineral inhibitor |
| CN103785546A (en) * | 2014-02-20 | 2014-05-14 | 安徽工业大学 | Method for separating quartz from andalusite in floating mode under nearly neutral condition |
| CN103785546B (en) * | 2014-02-20 | 2016-02-24 | 安徽工业大学 | A kind of method of FLOTATION SEPARATION quartz and andalusite under near-neutral sulfite deinking |
| CN104624360A (en) * | 2014-12-24 | 2015-05-20 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
| CN104624360B (en) * | 2014-12-24 | 2017-06-16 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
| CN113337706A (en) * | 2021-05-25 | 2021-09-03 | 中国冶金地质总局昆明地质勘查院 | Purification method of andalusite raw ore |
| CN113337706B (en) * | 2021-05-25 | 2023-02-17 | 中国冶金地质总局昆明地质勘查院 | Purification method of andalusite raw ore |
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Application publication date: 20110316 |