CN102357422B - Method for producing high-grade sulfur concentrated ore from sulfurous iron ore with stepped flotation method - Google Patents
Method for producing high-grade sulfur concentrated ore from sulfurous iron ore with stepped flotation method Download PDFInfo
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- CN102357422B CN102357422B CN 201110229252 CN201110229252A CN102357422B CN 102357422 B CN102357422 B CN 102357422B CN 201110229252 CN201110229252 CN 201110229252 CN 201110229252 A CN201110229252 A CN 201110229252A CN 102357422 B CN102357422 B CN 102357422B
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Abstract
The invention provides a method for producing high-grade sulfur concentrated ore from sulfurous iron ore with a stepped flotation method. The method comprises the following steps of: crushing and grinding sulfurous iron ore which contains 15-36 percent of sulfur and serves as a raw material, and performing primary flotation to obtain sulfur concentrated ore I and tailings; floating the tailings to obtain roughly-separated concentrated ore and roughly-separated tailings; concentrating the roughly-separated concentrated ore by 2-4 times to obtain sulfur concentrated ore II; scavenging the roughly-separated tailings for 2-3 times to obtain final tailings; and combining the sulfur concentrated ore I with the sulfur concentrated ore II to obtain sulfur concentrated ore. The method has the advantages of short process flow, small using amount of sulfuric acid, low production cost and low energy consumption; the obtained sulfur concentrated ore contains more than 48 percent of sulfur; the tailings have low sulfur content; and comprehensive utilization of the tailings is facilitated.
Description
Technical field
The present invention relates to a kind of technique of preparing, particularly relate to a kind of method of from troilite, producing highgrade pyrite concentrate with the stepped-flotation separation method.
Background technology
At present, in the technological process of producing the sulphur concentrate Conventional flotation technological process, single gravity concentration technological process, gravity treatment-joint flotation technology flow process are arranged.Chinese patent 2004100795274 discloses a kind of production method of cinder of sulfur iron ore in high iron and low sulfur type, flotation process for routine, take sulfur-bearing grade 8～48% troilite as raw material, after carrying out fragmentation, ore grinding, sorting other valuable mineral that reclaims except troilite, ore pulp is introduced agitator, add sulfuric acid, behind collecting agent and the foaming agent, enter the flotation device flotation, the flotation gained just concentrate through 3～6 times after selected the high purity sulphur iron ore.During this technological process floatation pyrite, need all adding the sulphur acid for adjusting pH value in the ore pulps, so the sulfuric acid consumption is large, and need could obtain the sulphur concentrate through 3～6 times after selected, technological process is long, need many flotation devices of use, and the production cost height.Chinese patent 2008100581339 discloses a kind of method of producing highgrade pyrite concentrate with low grade pyrite, adopt gravity treatment-joint flotation technology, need to use the gravitational separation equipments such as spiral chute, shaking table, and the chats of output sulfur-bearing grade 10～20%, and then adopt the Conventional flotation method to carry out flotation.Technological process is long, and chats needs thickening before entering flotation, and sulfur recovery rate is low, and the mine tailing sulfur content is high, is unfavorable for the comprehensive utilization of mine tailing.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming provides a kind of technological process short, and the sulfuric acid consumption is low, and required flotation device number of units is few, and energy consumption is low, the method for using the stepped-flotation separation method to produce highgrade pyrite concentrate from troilite that the technique of preparing economic indicator is good.
The present invention produces the processing step of method of highgrade pyrite concentrate from troilite with the stepped-flotation separation method as follows:
1) take sulfur-bearing grade 15～36% pyrite Ores as raw material, muck, ore grinding are 52～83% to 0.074 millimeter grade occupation rate of fineness, and liberation degree of minerals is 85～96%, gets raw meal.
2) adding entry in raw meal, to be mixed with concentration expressed in percentage by weight be 28～48% ore pulp, enter agitator, add the collecting agent of 160～320 grams/ton and the foaming agent of 30～70 grams/ton, stir and enter flotation device after 2～4 minutes, carry out flotation, get sulphur concentrate I and the mine tailing of sulfur-bearing grade＞48%.
3) mine tailing is introduced agitator, add sulfuric acid, adjusting the pH value is 5～6.5, adds the collecting agent of 200～300 grams/ton and the foaming agent of 30～55 grams/ton, stirs 5 minutes, enters flotation device and carries out flotation, must roughly select concentrate and rougher tailings.
4) the step 3) gained is roughly selected concentrate carry out 2～4 times selected, it is selected that each gained ore concentrate enters next stage, get at last the sulphur concentrate II of sulfur-bearing grade＞48%, wherein, the 1st time selected gained cleaner tailings returns step 3) as flotation feed, all the other the 2nd～4 time selected gained cleaner tailings all returns upper level as selected raw material, simultaneously step 3) gained rougher tailings being carried out 2～3 times scans, the scavenger concentrate of scanning gained for the 1st time returns step 3) as flotation feed, all the other are scanned the gained scavenger concentrate for the 2nd～3 time and all return upper level as scanning raw material, scan the raw material that mine tailing is all scanned as next stage at every turn, scan at last the result and get true tailings.
5) with step 2) gained sulphur concentrate I and the merging of step 4) gained sulphur concentrate II, get the sulphur concentrate.
Wherein, collecting agent is more than one in the alkyl xanthic acid salt, such as ethyl xanthate, butyl xanthate, isoamyl xanthate; Foaming agent is a kind of in pine tar, the terpenic oil.
The present invention produces the method for highgrade pyrite concentrate with the stepped-flotation separation method from troilite advantage is to adopt two step floatation process, technique is compact, especially the ore pulp of first step flotation is nature pH value, only adopt one or more flotation device just can replace the required jigging of gravity separation technology and shaking table, and sulphur concentrate output capacity is up to 21～47%, simultaneously, the treating capacity of the second flotation is greatly reduced, and the sulfuric acid consumption reduces greatly, and technological process is short, production cost is low, and energy consumption is low.
The specific embodiment
Embodiment 1: its step is as follows:
1) take Chinese yunnan somewhere sulfur-bearing grade 15.3% pyrite Ore as raw material, muck, ore grinding are 83% to 0.074 millimeter grade occupation rate of fineness, and liberation degree of minerals is 96%, gets raw meal.
2) adding entry in raw meal, to be mixed with concentration expressed in percentage by weight be 35～48% ore pulp, enter agitator, the ethyl xanthate and the butyl xanthate that add 160 grams/ton, its mixing ratio is counted 1:1 by weight, and 30 grams/ton pine tar, stirs and enters flotation device after 2 minutes, carry out flotation, get sulphur concentrate I and the mine tailing of sulfur-bearing grade 48.77%, its sulphur concentrate I productive rate is 21.55%, and the rate of recovery is 67.69%.
3) mine tailing is introduced agitator, add sulfuric acid, adjusting the pH value is 5.5～6.5, adds 200 grams/ton step 2) collecting agent, and 30 grams/ton pine tar, stirred 5 minutes, enter flotation device and carry out flotation, must roughly select concentrate and rougher tailings.
4) the step 3) gained is roughly selected concentrate carry out 4 times selected, get the sulphur concentrate II of sulfur-bearing grade 48.24%, its productive rate 6.39%, the rate of recovery 20.15%; Step 3) gained rougher tailings is carried out 2 times scan, get true tailings.
5) with step 2) gained sulphur concentrate I and the merging of step 4) gained sulphur concentrate II, get the sulphur concentrate.
This sulphur concentrate meets boiling roaster and carries output pyrite cinder ferrous grade＞61% behind the sulphur, the quality requirement of sulfur content＜0.3%.
Embodiment 2: its step is as follows:
1) take Sichuan Province China somewhere sulfur-bearing grade 24.81% pyrite Ore as raw material, muck, ore grinding are 68% to 0.074 millimeter grade occupation rate of fineness, and liberation degree of minerals is 92%, gets raw meal.
2) adding entry in raw meal, to be mixed with concentration expressed in percentage by weight be 30～40% ore pulp, enter agitator, the butyl xanthate that adds 240 grams/ton, and 50 grams/ton terpenic oil, stir and enter flotation device after 4 minutes, carry out flotation, get sulphur concentrate I and the mine tailing of sulfur-bearing grade 49.69%, its sulphur concentrate I productive rate is 32.36%, and the rate of recovery is 64.81%.
3) mine tailing is introduced agitator, add sulfuric acid, adjusting the pH value is 5.5～6, add 260 grams/ton ethyl xanthate and butyl xanthate, its mixing ratio weight portion is counted 1:1, and 40 grams/ton terpenic oil, stirred 5 minutes, and entered flotation device and carry out flotation, must roughly select concentrate and rougher tailings.
4) the step 3) gained is roughly selected concentrate carry out 3 times selected, get the sulphur concentrate II of sulfur-bearing grade 49.91%, its productive rate 14.88%, the rate of recovery 29.93%; Step 3) gained rougher tailings is carried out 3 times scan, get true tailings.
5) with step 2) gained sulphur concentrate I and the merging of step 4) gained sulphur concentrate II, get the sulphur concentrate.
This sulphur concentrate meets boiling roaster and carries output pyrite cinder ferrous grade＞61% behind the sulphur, the quality requirement of sulfur content＜0.3%.
Embodiment 3: its step is as follows:
1) take Sichuan Province China somewhere sulfur-bearing grade 35.57% pyrite Ore as raw material, muck, ore grinding are 52% to 0.074 millimeter grade occupation rate of fineness, and liberation degree of minerals is 85%, gets raw meal.
2) adding entry in raw meal, to be mixed with concentration expressed in percentage by weight be 28～37% ore pulp, enter agitator, the isopentyl butter that adds 320 grams/ton, and 70 grams/ton terpenic oil, stir and enter flotation device after 4 minutes, carry out flotation, get sulphur concentrate I and the mine tailing of sulfur-bearing grade 48.64%, its sulphur concentrate I productive rate is 46.53%, and the rate of recovery is 63.63%.
3) mine tailing is introduced agitator, add sulfuric acid, adjusting the pH value is 5～5.5, adds 300 grams/ton isoamyl xanthate, and 55 grams/ton terpenic oil, stirs 5 minutes, enters flotation device and carries out flotation, gets the rougher tailings of selected concentrate.
4) the step 3) gained is roughly selected concentrate carry out 2 times selected, get the sulphur concentrate II of sulfur-bearing grade 49.82%, its productive rate 22.4%, the rate of recovery 31.37%; Step 3) gained rougher tailings is carried out 3 times scan, the finality ore deposit.
5) with step 2) gained sulphur concentrate I and the merging of step 4) gained sulphur concentrate II, get the sulphur concentrate.
This sulphur concentrate meets boiling roaster and carries output pyrite cinder ferrous grade＞61% behind the sulphur, the quality requirement of sulfur content＜0.3%.
Claims (2)
1. method of producing highgrade pyrite concentrate with the stepped-flotation separation method from troilite is characterized in that step is as follows:
1) take sulfur-bearing grade 15～36% pyrite Ores as raw material, muck, ore grinding are 52～83% to 0.074 millimeter grade occupation rate of fineness, and liberation degree of minerals is 85～96%, gets raw meal;
2) adding entry in raw meal, to be mixed with concentration expressed in percentage by weight be 28～48% ore pulp, enter agitator, add the collecting agent of 160～320 grams/ton and the foaming agent of 30～70 grams/ton, stir and enter flotation device after 2～4 minutes, carry out flotation, get sulphur concentrate I and the mine tailing of sulfur-bearing grade＞48%;
3) mine tailing is introduced agitator, add sulfuric acid, adjusting the pH value is 5～6.5, adds the collecting agent of 200～300 grams/ton and the foaming agent of 30～55 grams/ton, stirs 5 minutes, enters flotation device and carries out flotation, must roughly select concentrate and rougher tailings;
4) the step 3) gained is roughly selected concentrate carry out 2～4 times selected, it is selected that each gained ore concentrate enters next stage, get at last the sulphur concentrate II of sulfur-bearing grade＞48%, wherein, the 1st time selected gained cleaner tailings returns step 3) as flotation feed, all the other the 2nd～4 time selected gained cleaner tailings all returns upper level as selected raw material, simultaneously step 3) gained rougher tailings being carried out 2～3 times scans, the scavenger concentrate of scanning gained for the 1st time returns step 3) as flotation feed, all the other are scanned the gained scavenger concentrate for the 2nd～3 time and all return upper level as scanning raw material, scan the raw material that mine tailing is all scanned as next stage at every turn, scan at last the result and get true tailings;
5) with step 2) gained sulphur concentrate I and the merging of step 4) gained sulphur concentrate II, get the sulphur concentrate.
2. method of producing highgrade pyrite concentrate with the stepped-flotation separation method from troilite as claimed in claim 1 is characterized in that collecting agent is more than one in the alkyl xanthic acid salt, and foaming agent is a kind of in pine tar, the terpenic oil.
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| CN 201110229252 CN102357422B (en) | 2011-08-11 | 2011-08-11 | Method for producing high-grade sulfur concentrated ore from sulfurous iron ore with stepped flotation method |
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| CN102357422B true CN102357422B (en) | 2013-02-27 |
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Families Citing this family (3)
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| CN102935408A (en) * | 2012-11-06 | 2013-02-20 | 永利高盛（北京）环保科技有限公司 | Flotation reagent for pyrites, preparation process of flotation reagent and flotation process |
| CN104858066B (en) * | 2015-06-04 | 2017-06-27 | 中蓝连海设计研究院 | A kind of direct reverse flotation technique for preparing high-purity iron concentrate |
| CN107512837A (en) * | 2017-09-11 | 2017-12-26 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | The processing method of the river bottom mud containing heavy metal |
Citations (4)
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|---|---|---|---|---|
| EP1179605A1 (en) * | 2000-08-08 | 2002-02-13 | Dowa Mining Co., Ltd. | Method of recovering sulfur from leach residues of sulfidic ore processing using distillation and condensation |
| CN1600878A (en) * | 2004-10-25 | 2005-03-30 | 昆明易明兴矿冶设备有限公司 | Method for producing cinder of sulfur iron ore in high iron and low sulfur type |
| CN101234363A (en) * | 2008-03-04 | 2008-08-06 | 昆明理工大学 | Method for producing high-grade sulfur concentrate from low-grade pyrite mine ore |
| CN101733190A (en) * | 2008-11-25 | 2010-06-16 | 宝钢集团上海梅山有限公司 | Benefication method for sulphur-containing composite iron tailing |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1179605A1 (en) * | 2000-08-08 | 2002-02-13 | Dowa Mining Co., Ltd. | Method of recovering sulfur from leach residues of sulfidic ore processing using distillation and condensation |
| CN1600878A (en) * | 2004-10-25 | 2005-03-30 | 昆明易明兴矿冶设备有限公司 | Method for producing cinder of sulfur iron ore in high iron and low sulfur type |
| CN101234363A (en) * | 2008-03-04 | 2008-08-06 | 昆明理工大学 | Method for producing high-grade sulfur concentrate from low-grade pyrite mine ore |
| CN101733190A (en) * | 2008-11-25 | 2010-06-16 | 宝钢集团上海梅山有限公司 | Benefication method for sulphur-containing composite iron tailing |
Non-Patent Citations (6)
| Title |
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| 低品位硫铁矿精选试验研究;文书明等;《硫酸工业》;20090225(第01期);第50页到第52页 * |
| 唐国标.某硫铁矿选矿工艺流程的研究.《有色冶金设计与研究》.2009,第30卷(第05期),第1页到第3页. |
| 文书明等.低品位硫铁矿精选试验研究.《硫酸工业》.2009,(第01期),第50页到第52页. |
| 某硫铁矿选矿工艺流程的研究;唐国标;《有色冶金设计与研究》;20091025;第30卷(第05期);第1页到第3页 * |
| 欧乐明等.高品质硫精矿生产工艺技术研究.《化工矿物与加工》.2009,(第11期),第1页到第4页. |
| 高品质硫精矿生产工艺技术研究;欧乐明等;《化工矿物与加工》;20091115(第11期);第1页到第4页 * |
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Inventor after: Tu Liangce Inventor after: Shi Lei Inventor after: Zhou Zheng Inventor after: Xu Danping Inventor after: Li Bingrong Inventor after: Duan Zhiyong Inventor after: Zhao Hualun Inventor after: Qiu Xingfu Inventor after: Yu Cheng Inventor after: Lei Li Inventor before: Tu Liangce Inventor before: Xu Danping Inventor before: Duan Zhiyong Inventor before: Qiu Xingfu Inventor before: Zhou Zheng Inventor before: Li Bingrong Inventor before: Zhao Hualun Inventor before: Yu Cheng |
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