CN108993694A - A kind of hematite grinding aid and application method - Google Patents
A kind of hematite grinding aid and application method Download PDFInfo
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- CN108993694A CN108993694A CN201810729140.0A CN201810729140A CN108993694A CN 108993694 A CN108993694 A CN 108993694A CN 201810729140 A CN201810729140 A CN 201810729140A CN 108993694 A CN108993694 A CN 108993694A
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- ball mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/06—Selection or use of additives to aid disintegrating
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Abstract
The present invention relates to a kind of hematite grinding aid and its application methods, it is characterized by comprising the following steps: taking tannic acid sodium and ammonium acetate in tannic acid sodium 60%-80% and ammonium acetate 20%-40% ratio, it is dissolved in water, it is configured to the grinding aid mixed solution that mass concentration is 4.8-6.0%, the temperature of grinding aid mixed solution is controlled at 10 DEG C~20 DEG C, 10min~15min is stirred；The product fine crushing of hematite is fed and carries out ore grinding in ball mill, grinding aid mixed solution is added according to dosing 0.5-2.0kg/t raw ore, ore milling product feeds hydrocyclone and is classified, the sand setting of classification returns to ball mill and regrinds, grinding aid mixed solution returns to together with the sand return of cyclone and carries out ore grinding in ball mill, and classifier overflow feeds thickness grading cyclone and continuous sorting operation.The invention has the advantages that product grinding fineness can be improved, the classification efficiency of product is improved, while ball mill processing capacity can be increased substantially, it is good to subsequent reselection and magnetic separation effect, significantly improve comprehensive recovery rate of concentrate.
Description
Technical field
The invention belongs to the ore grinding technical field of iron ore, in particular to a kind of hematite grinding aid and application method.
Background technique
Ore grinding is the important procedure in mineral processing production, and the ratio that ore grinding cost accounts for entire beneficiation cost is 30-50%, therefore
It is very crucial to improve grinding efficiency.In recent years, grinding aid becomes the important research content for improving grinding efficiency.
It is current: for hematite grinding aid research be concentrated mainly on calgon, enuatrol, sodium tripolyphosphate and
Citric acid etc..
Wang Zehong etc. has studied the facilitation that calgon improves west place in Hubei oolitic hematite grinding efficiency, it is indicated that six
Sodium metaphosphate is by reducing viscosity, the characterization of adsorption for changing ore particle surface and the ore particle surface potential of ore pulp, reducing ore particle surface
The modes such as the fine mineral particle of absorption, the fine crack for increasing ore particle surface promote the crushing of oolitic hematite, improve its ore grinding effect
Rate.
Qian Gongming etc. has carried out grinding-aid effect test to west place in Hubei oolitic hematite stone using enuatrol as grinding aid, and to helping
Grinding machine reason is studied, the results showed that, the grind -aiding effect of enuatrol is mainly the microhardness for reducing oolitic hematite stone, together
When make bloodstone particle that hydrophobic reunion occur, be conducive to the separation of bloodstone and collophane；Huang Yehao etc. studies ore grinding auxiliary agent pair
The influence of ore pulp property and ore grinding energy consumption in grinding process makees grinding aid using high-phosphorus hematite as research object with enuatrol, into
Ore grinding test is gone, the results showed that enuatrol has apparent grind -aiding effect.
Li Maolin etc. has studied calgon and sodium tripolyphosphate to the shadow of west place in Hubei high-phosphor oolitic hematite grinding efficiency
It rings, the results showed that, calgon and sodium tripolyphosphate point are added when -0.038mm content accounts for 55%, 65% and 75%
Do not reduce ore grinding energy consumption 34.58% and 37.65% averagely.
Liang Bing etc. has studied influence of the citric acid to bloodstone grinding efficiency, and analyzes its mechanism of action, the results showed that,
The physical absorption and chemisorption that citric acid generates on bloodstone surface have the viscosity for reducing ore grinding ore pulp, change bloodstone
The effects of current potential on surface, the hardness on reduction bloodstone surface, thus citric acid can improve the grinding efficiency of bloodstone.
Above-mentioned hematite grinding aid has certain effect, but not ideal enough.Therefore, it need to further research and develop efficiently
Hematite grinding aid.
Summary of the invention
The present invention problem not ideal enough for existing hematite grinding aid effect, provides a kind of hematite grinding aid
Agent and application method.
A kind of hematite grinding aid of the invention, it is characterised in that: be made of tannic acid sodium and ammonium acetate, each component
Mass percent is made of tannic acid sodium 60%-80% and ammonium acetate 20%-40%.
A kind of application method of hematite grinding aid of the invention, characterized in that it comprises the following steps:
1) tannic acid sodium and ammonium acetate are taken in tannic acid sodium 60%-80% and ammonium acetate 20%-40% ratio, added water-soluble
Solution is configured to the grinding aid mixed solution that mass concentration is 4.8-6.0%, the temperature of grinding aid mixed solution is controlled at 10 DEG C
~20 DEG C, stir 10min~15min；
2) product fine crushing of hematite is fed and carries out ore grinding in ball mill, according to dosing 0.4-2.0kg/t
Grinding aid mixed solution is added in raw ore, and ore milling product feeds hydrocyclone and is classified, and the sand setting of classification returns to ball mill again
Mill, grinding aid mixed solution returns to together with the sand return of cyclone carries out ore grinding in ball mill, classifier overflow feeds thickness
Classifying cyclone and subsequent sorting operation.
Addition grinding aid tannic acid sodium can reduce the intensity of grinding charge material, and addition ammonium acetate can improve the rheology of ore pulp
Property, while adding two kinds of grinding aids and can achieve two kinds of function and effect synergistic effects, reach energy-saving to greatest extent.
Compared with prior art, present invention has an advantage that
Point that grinding aid provided by the invention contains the surfactant for reducing material strength and reduces ore grinding pulp viscosity
Powder, dispersing agent and surfactant synergistic effect, reduce the hardness of bloodstone, improve grinding environment, have selective grinding aid
Effect, compared with conventional grinding process, can be improved product grinding fineness, improves the classification efficiency of product, while can be substantially
Degree improves ball mill processing capacity, meanwhile, subsequent reselection and magnetic separation effect are good, significantly improve comprehensive recovery rate of concentrate, make iron ore
Resource obtains abundant, reasonable recycling and utilization, reduces the wasting of resources.
Specific embodiment
Below with reference to embodiment, the invention will be further described.
Raw material in following embodiment is commercial products.
Embodiment 1
It is the product fine crushing (- 12mm accounts for 90% or more) of hematite to mine, adds hematite in grinding process and help
Grinding agent, then carries out ore grinding to it, and ore milling product is classified and is sorted, including the following steps:
In the ratio of tannic acid sodium 67.5% and ammonium acetate 32.5%, being dissolved in water and being configured to mass concentration is 4.8%
Grinding aid mixed solution, the temperature of grinding aid mixed solution are controlled at 10 DEG C~20 DEG C, stir 10min~15min；
1) tannic acid sodium and ammonium acetate are taken in tannic acid sodium 60%-80% and ammonium acetate 20%-40% ratio, added water-soluble
Solution is configured to the grinding aid mixed solution that mass concentration is 4.8-6.0%, the temperature of grinding aid mixed solution is controlled at 10 DEG C
~20 DEG C, stir 10min~15min；
2) -12mm the hematite for accounting for 90% or more is fed and carries out ore grinding in ball mill, according to dosing 1kg/t
Grinding aid mixed solution is added in raw ore, and ore milling product feeds hydrocyclone and is classified, and the sand setting of classification returns to ball mill again
Mill, grinding aid mixed solution returns to together with the sand return of cyclone carries out ore grinding in ball mill, classifier overflow feeds thickness
Classifying cyclone and subsequent sorting operation.
It is as shown in table 1 to add different grinding aid grinding efficiency comparing results.
Table 1 adds different grinding aid grinding efficiency comparing results
Compared with carrying out ore grinding the case where not adding grinding aid, ball mill ore discharging granularity improves 12.96%；Hydrocyclone
Overflow product granularity improves 8.89%；Hydroclone classification amount efficiency improves 12.54%；Hydroclone classification matter efficiency mentions
It is high by 12.34%；Ball mill handles ore ability and improves 5.07%；Comprehensive recovery rate of concentrate improves 2.87%.
Comparative example 1
Sodium hexametaphosphate solution is prepared according to the method for embodiment 1, is added according to the mass ratio of dosing 1kg/t raw ore
Add ammonium acetate solution, and carries out ore grinding and sorting according to the method for embodiment 1.
Tannic acid sodium+ammonium acetate is added compared with addition calgon carries out ore grinding, ball mill ore discharging granularity improves
1.18%；Hydrocyclone overflow product granularity reduces by 0.86%；Hydroclone classification amount efficiency reduces by 4.75%；Waterpower rotation
Flowing device classification matter efficiency reduces by 6.38%；The ore ability that ball mill handles improves 7.63%, and comprehensive recovery rate of concentrate improves
0.44%.
Comparative example 2
Match preparing tannic acid sodium solution according to the method for embodiment 1, is added according to the mass ratio of dosing 1kg/t raw ore
Ammonium acetate solution, and ore grinding and sorting are carried out according to the method for embodiment 1.
Tannic acid sodium+ammonium acetate is added compared with addition tannic acid sodium carries out ore grinding, ball mill ore discharging particle size reduction
10.06%；Hydrocyclone overflow product granularity reduces by 1.35%；Hydroclone classification amount efficiency reduces by 0.27%；Waterpower
Cyclone classification matter efficiency improves 2.60%；The ore ability that ball mill handles improves 2.63%, and comprehensive recovery rate of concentrate improves
0.92%.
Comparative example 3
Ammonium acetate solution is prepared according to the method for embodiment 1, adds second according to the mass ratio of dosing 1kg/t raw ore
Acid ammonium solution, and ore grinding and sorting are carried out according to the method for embodiment 1.
Tannic acid sodium+ammonium acetate is added compared with addition ammonium acetate carries out ore grinding, ball mill ore discharging particle size reduction 7.47%；
Hydrocyclone overflow product granularity reduces by 3.35%；Hydroclone classification amount efficiency improves 2.10%；Hydrocyclone point
Grade matter efficiency improves 4.06%；The ore ability that ball mill handles improves 1.57%, and comprehensive recovery rate of concentrate improves 0.72%.
Embodiment 2
It is the product fine crushing (- 12mm accounts for 90% or more) of hematite to mine, matches preparing tannic acid according to the method for embodiment 1
40% solution of sodium 60% and ammonium acetate adds tannic acid sodium 60% and second according to the mass ratio of dosing 0.5kg/t raw ore
Sour 40% solution of ammonium, and ore grinding and sorting are carried out according to the method for embodiment 1.
It is as shown in table 2 to add different grinding aid grinding efficiency comparing results.
Table 2 adds different grinding aid grinding efficiency comparing results
Compared with carrying out ore grinding the case where not adding grinding aid, ball mill ore discharging granularity improves 29.43%；Cyclone overflow
Product granularity improves 13.08%；Cyclone classification amount efficiency improves 18.44%；Cyclone classification matter efficiency improves 22.09%；
Ball mill handles ore ability and improves 6.02%；Comprehensive recovery rate of concentrate improves 3.00%.
Compared with addition calgon carries out ore grinding, ball mill ore discharging granularity improves 15.94%；Hydrocyclone overflow
Product granularity improves 2.96%；Hydroclone classification amount efficiency improves 0.25%；Hydroclone classification matter efficiency improves
1.74%；Ball mill handles ore ability and improves 8.61%；Comprehensive recovery rate of concentrate improves 0.56%.
Compared with addition tannic acid sodium carries out ore grinding, ball mill ore discharging granularity improves 3.06%；Hydrocyclone overflow produces
Product granularity improves 2.45%；Hydroclone classification amount efficiency improves 4.95%；Hydroclone classification matter efficiency improves
11.50%；Ball mill handles ore ability and improves 3.56%；Comprehensive recovery rate of concentrate improves 1.04%.
Compared with addition ammonium acetate carries out ore grinding, ball mill ore discharging granularity improves 6.03%；Hydrocyclone overflow product
Granularity improves 0.37%；Hydroclone classification amount efficiency improves 7.45%；Hydroclone classification matter efficiency improves
13.09%；Ball mill handles ore ability and improves 2.49%；Comprehensive recovery rate of concentrate improves 0.84%.
Embodiment 3
It is the product fine crushing (- 12mm accounts for 90% or more) of hematite to mine, matches preparing tannic acid according to the method for embodiment 1
30% solution of sodium 70% and ammonium acetate adds tannic acid sodium 70% and second according to the mass ratio of dosing 1.5kg/t raw ore
Sour 30% solution of ammonium, and ore grinding and sorting are carried out according to the method for embodiment 1.
It is as shown in table 3 to add different grinding aid grinding efficiency comparing results.
Table 3 adds different grinding aid grinding efficiency comparing results
Compared with carrying out ore grinding the case where not adding grinding aid, ball mill ore discharging granularity improves 26.14%；Cyclone overflow
Product granularity improves 12.70%；Cyclone classification amount efficiency improves 18.19%；Cyclone classification matter efficiency improves 20.14%；
Ball mill handles ore ability and improves 6.48%；Comprehensive recovery rate of concentrate improves 2.51%.
Compared with addition calgon carries out ore grinding, ball mill ore discharging granularity improves 12.99%；Hydrocyclone overflow
Product granularity improves 2.61%；Hydroclone classification amount efficiency improves 0.04%；Hydroclone classification matter efficiency improves
0.11%；Ball mill handles ore ability and improves 9.07%；Comprehensive recovery rate of concentrate improves 0.08%.
Compared with addition tannic acid sodium carries out ore grinding, ball mill ore discharging granularity improves 0.44%；Hydrocyclone overflow produces
Product granularity improves 2.11%；Hydroclone classification amount efficiency improves 4.73%；Hydroclone classification matter efficiency improves
9.72%；Ball mill handles ore ability and improves 4.090%；Comprehensive recovery rate of concentrate improves 0.55%.
Compared with addition ammonium acetate carries out ore grinding, ball mill ore discharging granularity improves 3.33%；Hydrocyclone overflow product
Granularity improves 0.04%；Hydroclone classification amount efficiency improves 7.22%；Hydroclone classification matter efficiency improves
11.29%；Ball mill handles ore ability and improves 2.92%；Comprehensive recovery rate of concentrate improves 0.36%.
Embodiment 4
It is the product fine crushing (- 12mm accounts for 90% or more) of hematite to mine, matches preparing tannic acid according to the method for embodiment 1
20% solution of sodium 80% and ammonium acetate adds tannic acid sodium 80% and second according to the mass ratio of dosing 2.0kg/t raw ore
Sour 20% solution of ammonium, and ore grinding and sorting are carried out according to the method for embodiment 1.
It is as shown in table 4 to add different grinding aid grinding efficiency comparing results.
Table 4 adds different grinding aid grinding efficiency comparing results
Compared with carrying out ore grinding the case where not adding grinding aid, ball mill ore discharging granularity improves 27.46%；Hydrocyclone
Overflow product granularity improves 12.76%；Hydroclone classification amount efficiency improves 21.39%；Hydroclone classification matter efficiency
Improve 25.98%；Ball mill handles ore ability and improves 5.02%；Comprehensive recovery rate of concentrate improves 3.12%.
Compared with addition calgon carries out ore grinding, ball mill ore discharging granularity improves 14.17%；Hydrocyclone overflow
Product granularity improves 2.67%；Hydroclone classification amount efficiency improves 2.74%；Hydroclone classification matter efficiency improves
4.99%；Ball mill handles ore ability and improves 7.56%；Comprehensive recovery rate of concentrate improves 0.68%.
Compared with addition tannic acid sodium carries out ore grinding, ball mill ore discharging granularity improves 1.49%；Hydrocyclone overflow produces
Product granularity improves 2.16%；Hydroclone classification amount efficiency improves 7.56%；Hydroclone classification matter efficiency improves
15.06%；Ball mill handles ore ability and improves 2.58%；Comprehensive recovery rate of concentrate improves 1.16%.
Compared with addition ammonium acetate carries out ore grinding, ball mill ore discharging granularity improves 4.41%；Hydrocyclone overflow product
Granularity improves 0.09%；Hydroclone classification amount efficiency improves 10.12%；Hydroclone classification matter efficiency improves
16.70%；Ball mill handles ore ability and improves 1.52%；Comprehensive recovery rate of concentrate improves 0.96%.
Claims (2)
1. a kind of hematite grinding aid, it is characterised in that: be made of tannic acid sodium and ammonium acetate, each component mass percent
It is made of tannic acid sodium 60%-80% and ammonium acetate 20%-40%.
2. a kind of application method of hematite grinding aid, characterized in that it comprises the following steps:
1) tannic acid sodium and ammonium acetate are taken in tannic acid sodium 60%-80% and ammonium acetate 20%-40% ratio, is dissolved in water, matches
It is set to the grinding aid mixed solution that mass concentration is 4.8-6.0%, the temperature of grinding aid mixed solution is controlled 10 DEG C~20
DEG C, stir 10min~15min；
2) product fine crushing of hematite is fed and carries out ore grinding in ball mill, according to dosing 0.5-2.0kg/t raw ore
Grinding aid mixed solution is added, ore milling product feeds hydrocyclone and is classified, and the sand setting of classification returns to ball mill and regrinds, and helps
Grinding agent mixed solution returns to together with the sand return of cyclone and carries out ore grinding in ball mill, and classifier overflow feeds thickness grading rotation
Flow device and subsequent sorting operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810729140.0A CN108993694A (en) | 2018-07-05 | 2018-07-05 | A kind of hematite grinding aid and application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810729140.0A CN108993694A (en) | 2018-07-05 | 2018-07-05 | A kind of hematite grinding aid and application method |
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| CN108993694A true CN108993694A (en) | 2018-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090423A (en) * | 2022-06-24 | 2022-09-23 | 中南大学 | Tannin amide beneficiation auxiliary agent, and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003220346A (en) * | 2002-01-30 | 2003-08-05 | Kurimoto Shoji Kk | Wet ball mill |
| CN101274298A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢集团矿业公司 | Anshan style lean hematite swirler-lattice type ball mill primary closed-circuit grinding grading technique |
| CN103865482A (en) * | 2014-03-25 | 2014-06-18 | 成都金汇能科技有限责任公司 | Mineral grinding aid and application thereof |
| CN107353875A (en) * | 2017-07-05 | 2017-11-17 | 鞍钢集团矿业有限公司 | A kind of iron ore grinding aid and its application method |
-
2018
- 2018-07-05 CN CN201810729140.0A patent/CN108993694A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003220346A (en) * | 2002-01-30 | 2003-08-05 | Kurimoto Shoji Kk | Wet ball mill |
| CN101274298A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢集团矿业公司 | Anshan style lean hematite swirler-lattice type ball mill primary closed-circuit grinding grading technique |
| CN103865482A (en) * | 2014-03-25 | 2014-06-18 | 成都金汇能科技有限责任公司 | Mineral grinding aid and application thereof |
| CN107353875A (en) * | 2017-07-05 | 2017-11-17 | 鞍钢集团矿业有限公司 | A kind of iron ore grinding aid and its application method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090423A (en) * | 2022-06-24 | 2022-09-23 | 中南大学 | Tannin amide beneficiation auxiliary agent, and preparation method and application thereof |
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Application publication date: 20181214 |