CN102357422A - 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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- CN102357422A CN102357422A CN2011102292528A CN201110229252A CN102357422A CN 102357422 A CN102357422 A CN 102357422A CN 2011102292528 A CN2011102292528 A CN 2011102292528A CN 201110229252 A CN201110229252 A CN 201110229252A CN 102357422 A CN102357422 A CN 102357422A
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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 with stepped-flotation separation method production high-grade sulphur concentrate from troilite.
Background technology
At present, in the technological process of producing the sulphur concentrate conventional flotation process, single gravity separation technology flow 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, is the flotation process of routine, is raw material with sulfur-bearing grade 8～48% troilite; After carrying out fragmentation, ore grinding, sorting recovery other valuable mineral except that troilite; Ore pulp is introduced agitator, add sulfuric acid, behind collecting agent and the foaming agent; Get into the flotation device flotation, flotation gained just concentrate must the high purity sulphur iron ore after selected through 3～6 times.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 big, 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 with low grade pyrite production high-grade sulphur concentrate; Adopt gravity treatment-joint flotation technology; Need to use gravitational separation equipments such as spiral chute, shaking table, and the chats of output sulfur-bearing grade 10～20%, and then adopt conventional floatation to carry out flotation.Technological process is long, and chats needs thickening before getting into 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 objective 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 board number is few, and energy consumption is low, the method with stepped-flotation separation method production high-grade sulphur concentrate from troilite that the technique of preparing economic indicator is good.
The present invention is following with the processing step of stepped-flotation separation method method of production high-grade sulphur concentrate from troilite:
1) be raw material with sulfur-bearing grade 15～36% troilite ores, muck, 0.074 millimeter grade occupation rate of ore grinding to fineness are 52～83%, and liberation degree of minerals is 85～96%, get raw meal.
2) in raw meal, adding entry, to be mixed with concentration expressed in percentage by weight be 28～48% ore pulp; Get into agitator, add the collecting agent of 160～320 gram/tons and the foaming agent of 30～70 gram/tons, stir and get into flotation device after 2～4 minutes; Carry out flotation, get the sulphur concentrate I and the mine tailing of sulfur-bearing grade＞48%.
3) mine tailing is introduced agitator, add sulfuric acid, adjustment pH value is 5～6.5, adds the collecting agent of 200～300 gram/tons and the foaming agent of 30～55 gram/tons, stirs 5 minutes, gets into flotation device and carries out flotation, must roughly select concentrate and rougher tailings.
4) with the step 3) gained roughly select concentrate carry out 2～4 times selected, it is selected that each gained ore concentrate gets into next stage, at last the sulphur concentrate II of sulfur-bearing grade＞48%; Wherein, Primary cleaner tailing returns step 3) as flotation feed, and all the other 2～4 times selected gained cleaner tailings all returns upper level as selected raw material, simultaneously step 3) gained rougher tailings is carried out 2～3 times and scans; The scavenger concentrate of once purging selection gained returns step 3) as flotation feed; All the other 2～3 scavenger concentrates 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 the result at last 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 one or more in the alkyl xanthic acid salt, like ethyl xanthate, butyl xanthate, isoamyl xanthate; Foaming agent is a kind of in pine tar, the terpenic oil.
The present invention is to adopt two step floatation process with the advantage of stepped-flotation separation method method of production high-grade sulphur concentrate from troilite, and technology is compact, and especially the ore pulp of first step flotation is nature pH value; Only adopt one or more flotation device just can replace required jigging of gravity separation technology and shaking table, and sulphur concentrate output capacity is up to 21～47%, simultaneously; The treating capacity of 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 following:
1) be raw material with Chinese yunnan somewhere sulfur-bearing grade 15.3% troilite ore, muck, 0.074 millimeter grade occupation rate of ore grinding to fineness are 83%, and liberation degree of minerals is 96%, get raw meal.
2) in raw meal, adding entry, to be mixed with concentration expressed in percentage by weight be 35～48% ore pulp, gets into agitator, adds the ethyl xanthate and the butyl xanthate of 160 gram/tons; Its cooperation ratio is 1:1 by weight, and 30 gram/ton pine tars, stirs and gets into flotation device after 2 minutes; Carry out flotation; Get the 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, adjustment pH value is 5.5～6.5, adds 200 gram/ton steps 2) collecting agent, and 30 gram/ton pine tars, stirred 5 minutes, get into flotation device and carry out flotation, must roughly select concentrate and rougher tailings.
4) with the step 3) gained roughly select concentrate carry out 4 times selected, 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 following:
1) be raw material with somewhere, Chinese Sichuan sulfur-bearing grade 24.81% troilite ore, muck, 0.074 millimeter grade occupation rate of ore grinding to fineness are 68%, and liberation degree of minerals is 92%, get raw meal.
2) in raw meal, adding entry, to be mixed with concentration expressed in percentage by weight be 30～40% ore pulp, gets into agitator, adds the butyl xanthate of 240 gram/tons; And 50 gram/ton terpenic oil; Stir and get into flotation device after 4 minutes, carry out flotation, get the 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, adjustment pH value is 5.5～6; Add 260 gram/ton ethyl xanthate and butyl xanthates, it cooperates the ratio weight portion to count 1:1, and 40 gram/ton terpenic oils; Stirred 5 minutes, and got into flotation device and carry out flotation, must roughly select concentrate and rougher tailings.
4) with the step 3) gained roughly select concentrate carry out 3 times selected, 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 following:
1) be raw material with somewhere, Chinese Sichuan sulfur-bearing grade 35.57% troilite ore, muck, 0.074 millimeter grade occupation rate of ore grinding to fineness are 52%, and liberation degree of minerals is 85%, get raw meal.
2) in raw meal, adding entry, to be mixed with concentration expressed in percentage by weight be 28～37% ore pulp, gets into agitator, adds the isopentyl butter of 320 gram/tons; And 70 gram/ton terpenic oil; Stir and get into flotation device after 4 minutes, carry out flotation, get the 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, adjustment pH value is 5～5.5, adds 300 gram/ton isoamyl xanthates, and 55 gram/ton terpenic oils, stirs 5 minutes, gets into flotation device and carries out flotation, gets the rougher tailings of selected concentrate.
4) with the step 3) gained roughly select concentrate carry out 2 times selected, 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 with stepped-flotation separation method production high-grade sulphur concentrate from troilite is characterized in that step is following:
1) be raw material with sulfur-bearing grade 15～36% troilite ores, muck, 0.074 millimeter grade occupation rate of ore grinding to fineness are 52～83%, and liberation degree of minerals is 85～96%, get raw meal;
2) in raw meal, adding entry, to be mixed with concentration expressed in percentage by weight be 28～48% ore pulp; Get into agitator, add the collecting agent of 160～320 gram/tons and the foaming agent of 30～70 gram/tons, stir and get into flotation device after 2～4 minutes; Carry out flotation, get the sulphur concentrate I and the mine tailing of sulfur-bearing grade＞48%;
3) mine tailing is introduced agitator, add sulfuric acid, adjustment pH value is 5～6.5, adds the collecting agent of 200～300 gram/tons and the foaming agent of 30～55 gram/tons, stirs 5 minutes, gets into flotation device and carries out flotation, must roughly select concentrate and rougher tailings;
4) with the step 3) gained roughly select concentrate carry out 2～4 times selected, it is selected that each gained ore concentrate gets into next stage, at last the sulphur concentrate II of sulfur-bearing grade＞48%; Wherein, Primary cleaner tailing returns step 3) as flotation feed, and all the other 2～4 times selected gained cleaner tailings all returns upper level as selected raw material, simultaneously step 3) gained rougher tailings is carried out 2～3 times and scans; The scavenger concentrate of once purging selection gained returns step 3) as flotation feed; All the other 2～3 scavenger concentrates 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 the result at last 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. the method with stepped-flotation separation method production high-grade sulphur concentrate from troilite as claimed in claim 1 is characterized in that collecting agent is one or more in the alkyl xanthic acid salt, and foaming agent is a kind of in pine tar, the terpenic oil.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104858066A (en) * | 2015-06-04 | 2015-08-26 | 中蓝连海设计研究院 | Direct-reverse flotation process for preparing high-purity sulfur 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 |
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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 | Production method of high-iron and low-sulfur pyrite slag |
| CN101234363A (en) * | 2008-03-04 | 2008-08-06 | 昆明理工大学 | A method of producing high-grade sulfur concentrate with low-grade pyrite 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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2011
- 2011-08-11 CN CN 201110229252 patent/CN102357422B/en not_active Expired - Fee Related
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 | Production method of high-iron and low-sulfur pyrite slag |
| CN101234363A (en) * | 2008-03-04 | 2008-08-06 | 昆明理工大学 | A method of producing high-grade sulfur concentrate with low-grade pyrite 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 (3)
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| 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》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104858066A (en) * | 2015-06-04 | 2015-08-26 | 中蓝连海设计研究院 | Direct-reverse flotation process for preparing high-purity sulfur 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 |
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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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